======================================
| [    9.439064][  T184] ------------[ cut here ]------------
| [    9.439316][  T184] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: unshare/184
| [    9.439722][  T184] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [    9.440371][  T184] Tainted: [W]=WARN
[    9.440531][  T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.440788][  T184] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.441022][  T184] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.441834][  T184] RSP: 0018:ffa0000000837ab0 EFLAGS: 00010286
[    9.442129][  T184] RAX: 00000000ffffffa6 RBX: ff11000004e558c0 RCX: 1ff4000000106f1c
[    9.442417][  T184] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000004e5597c
[    9.442663][  T184] RBP: ff110000050e9000 R08: 1fe22000009cab31 R09: ff1100000c3cd210
[    9.442909][  T184] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[    9.443163][  T184] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000050e9000
[    9.443422][  T184] FS:  00007f8426f64740(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[    9.443704][  T184] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.443919][  T184] CR2: 00005611e7adf310 CR3: 0000000008b88004 CR4: 0000000000771ef0
[    9.444175][  T184] PKRU: 55555554
[    9.444322][  T184] Call Trace:
[    9.444496][  T184]  <TASK>
[    9.444613][  T184]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.444794][  T184]  ? notifier_call_chain (kernel/notifier.c:85)
[    9.444975][  T184]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.445132][  T184]  register_netdevice (net/core/dev.c:11488)
[    9.445314][  T184]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.445540][  T184]  register_netdev (net/core/dev.c:11552)
[    9.445720][  T184]  loopback_net_init (drivers/net/loopback.c:218)
[    9.445905][  T184]  ops_init (net/core/net_namespace.c:137)
[    9.446065][  T184]  setup_net (net/core/net_namespace.c:446)
[    9.446212][  T184]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[    9.446388][  T184]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[    9.446583][  T184]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[    9.446782][  T184]  copy_net_ns (net/core/net_namespace.c:579)
[    9.446963][  T184]  create_new_namespaces (kernel/nsproxy.c:132)
[    9.447155][  T184]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    9.447344][  T184]  ksys_unshare (kernel/fork.c:3243)
[    9.447539][  T184]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[    9.447761][  T184]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    9.447952][  T184]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[    9.448144][  T184]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.448330][  T184]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.448528][  T184]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.448713][  T184]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.448926][  T184] RIP: 0033:0x7f842705fbcb
[    9.449124][  T184] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[    9.449651][  T184] RSP: 002b:00007ffdb5a25148 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    9.449903][  T184] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f842705fbcb
[    9.450156][  T184] RDX: 0000000000000000 RSI: 00007ffdb5a24eb0 RDI: 0000000040000000
[    9.450416][  T184] RBP: 00007ffdb5a254d0 R08: 00007ffdb5a250a0 R09: 0000000000000000
[    9.450657][  T184] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    9.450909][  T184] R13: 0000000000000000 R14: 00000000ffffffff R15: 00005611e7ae2b68
| [    9.462418][  T184] ------------[ cut here ]------------
| [    9.462607][  T184] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/184
| [    9.462898][  T184] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [    9.464426][  T184] Tainted: [W]=WARN
[    9.464659][  T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.464857][  T184] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.465097][  T184] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.465593][  T184] RSP: 0018:ffa0000000837b58 EFLAGS: 00010286
[    9.465794][  T184] RAX: 00000000ffffffa6 RBX: ff11000004e54ac0 RCX: 1ff4000000106f31
[    9.466029][  T184] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000004e54b7c
[    9.466256][  T184] RBP: ff1100000ab84000 R08: 1fe22000009ca971 R09: ff1100000c3cd1e8
[    9.466504][  T184] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[    9.466734][  T184] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000ab84000
[    9.466965][  T184] FS:  000000001d645400(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[    9.467231][  T184] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.467444][  T184] CR2: 00007f7a4794d000 CR3: 000000000f474005 CR4: 0000000000771ef0
[    9.467676][  T184] PKRU: 55555554
[    9.467813][  T184] Call Trace:
[    9.467954][  T184]  <TASK>
[    9.468071][  T184]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.468243][  T184]  ? notifier_call_chain (kernel/notifier.c:85)
[    9.468426][  T184]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.468568][  T184]  register_netdevice (net/core/dev.c:11488)
[    9.468742][  T184]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.468940][  T184]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[    9.469119][  T184] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[    9.469322][  T184]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[    9.469533][  T184]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[    9.469731][  T184] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[    9.469900][  T184]  ? build_open_flags (fs/open.c:1212)
[    9.470085][  T184]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[    9.470270][  T184]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[    9.470456][  T184]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[    9.470632][  T184]  ? fput_close_sync (fs/file_table.c:615)
[    9.470807][  T184]  ? __ia32_sys_open (fs/open.c:1374)
[    9.470980][  T184]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    9.471161][  T184]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.471329][  T184]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.471509][  T184]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.471680][  T184]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.471880][  T184] RIP: 0033:0x47cc8d
[    9.472031][  T184] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[    9.472521][  T184] RSP: 002b:00007ffe8cc17ad0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    9.472754][  T184] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[    9.472983][  T184] RDX: 00007ffe8cc17b50 RSI: 00000000400454ca RDI: 0000000000000006
[    9.473219][  T184] RBP: 00007ffe8cc17b20 R08: 0000000000000000 R09: 0000000000000000
[    9.473463][  T184] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe8cc18028
[    9.473693][  T184] R13: 00007ffe8cc18068 R14: 0000000000000002 R15: 0000000000543540
| [    9.475730][  T184] ------------[ cut here ]------------
| [    9.475894][  T184] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/184
| [    9.476178][  T184] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [    9.476819][  T184] Tainted: [W]=WARN
[    9.476956][  T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.477158][  T184] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.477360][  T184] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.477843][  T184] RSP: 0018:ffa0000000837c58 EFLAGS: 00010286
[    9.478046][  T184] RAX: 00000000ffffffa6 RBX: ff11000004e55700 RCX: 1ff4000000106f51
[    9.478267][  T184] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000004e557bc
[    9.478501][  T184] RBP: ff1100000ab84000 R08: 1fe22000009caaf9 R09: ff1100000c3cd1e8
[    9.478724][  T184] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000000
[    9.478949][  T184] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000002
[    9.479181][  T184] FS:  000000001d645400(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[    9.479448][  T184] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.479645][  T184] CR2: 00007f7a4794d000 CR3: 000000000f474005 CR4: 0000000000771ef0
[    9.479878][  T184] PKRU: 55555554
[    9.480022][  T184] Call Trace:
[    9.480159][  T184]  <TASK>
[    9.480268][  T184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.480447][  T184]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    9.480617][  T184]  notifier_call_chain (kernel/notifier.c:85)
[    9.480814][  T184]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[    9.480981][  T184]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[    9.481187][  T184] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[    9.481358][  T184]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[    9.481537][  T184]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[    9.481708][  T184]  ? update_socket_protocol+0x10/0x10
[    9.481874][  T184]  ? alloc_file_clone (fs/file_table.c:477)
[    9.482053][  T184]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    9.482221][  T184]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.482387][  T184]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.482567][  T184]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.482735][  T184]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.482929][  T184] RIP: 0033:0x47cc8d
[    9.483078][  T184] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[    9.483559][  T184] RSP: 002b:00007ffe8cc17b10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    9.483783][  T184] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[    9.484013][  T184] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[    9.484237][  T184] RBP: 00007ffe8cc17b60 R08: 0000000000000000 R09: 0000000000000000
[    9.484476][  T184] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe8cc18028
[    9.484698][  T184] R13: 00007ffe8cc18068 R14: 0000000000000002 R15: 0000000000543540
| [    9.486777][  T184] ------------[ cut here ]------------
| [    9.486947][  T184] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/184
| [    9.487245][  T184] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [    9.487825][  T184] Tainted: [W]=WARN
[    9.487969][  T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.488182][  T184] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.488394][  T184] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.488898][  T184] RSP: 0018:ffa0000000837850 EFLAGS: 00010286
[    9.489116][  T184] RAX: 00000000ffffffa6 RBX: ff11000004e54040 RCX: 1ff4000000106ed0
[    9.489350][  T184] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000004e540fc
[    9.489595][  T184] RBP: ff1100000ab84000 R08: 1fe22000009ca821 R09: ff1100000c3cd1e8
[    9.489829][  T184] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000001
[    9.490074][  T184] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000005881a80
[    9.490310][  T184] FS:  000000001d645400(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[    9.490590][  T184] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.490795][  T184] CR2: 00007f7a4794d000 CR3: 000000000f474005 CR4: 0000000000771ef0
[    9.491058][  T184] PKRU: 55555554
[    9.491208][  T184] Call Trace:
[    9.491353][  T184]  <TASK>
[    9.491478][  T184]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.491654][  T184]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.491798][  T184]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[    9.491975][  T184]  __dev_notify_flags (net/core/dev.c:9787)
[    9.492162][  T184]  ? netif_change_name (net/core/dev.c:1495)
[    9.492335][  T184]  ? __dev_change_flags (net/core/dev.c:9752)
[    9.492523][  T184]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[    9.492696][  T184]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[    9.492870][  T184]  netif_change_flags (net/core/dev.c:9820)
[    9.493053][  T184]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.493229][  T184]  dev_change_flags (net/core/dev_api.c:68)
[    9.493417][  T184]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    9.493595][  T184]  ? inet_ifa_byprefix (net/ipv4/devinet.c:619 (discriminator 9))
[    9.493772][  T184]  ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18)
[    9.493950][  T184]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    9.494099][  T184]  ? inet_dgram_connect (net/ipv4/af_inet.c:589)
[    9.494272][  T184]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[    9.494463][  T184]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[    9.494639][  T184]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[    9.494815][  T184]  sock_do_ioctl (net/socket.c:1313)
[    9.494997][  T184]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[    9.495175][  T184]  ? ioctl_file_clone (fs/ioctl.c:244)
[    9.495352][  T184]  sock_ioctl (net/socket.c:1434)
[    9.495506][  T184]  ? br_ioctl_call (net/socket.c:1279)
[    9.495681][  T184]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[    9.495857][  T184]  ? update_socket_protocol+0x10/0x10
[    9.496041][  T184]  ? alloc_file_clone (fs/file_table.c:477)
[    9.496216][  T184]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    9.496392][  T184]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.496603][  T184]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.496775][  T184]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.496968][  T184]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.497184][  T184] RIP: 0033:0x47cc8d
[    9.497333][  T184] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[    9.497847][  T184] RSP: 002b:00007ffe8cc17af0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    9.498092][  T184] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[    9.498327][  T184] RDX: 00007ffe8cc17b60 RSI: 0000000000008914 RDI: 0000000000000007
[    9.498574][  T184] RBP: 00007ffe8cc17b40 R08: 0000000000000000 R09: 0000000000000000
[    9.498809][  T184] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe8cc18028
[    9.499050][  T184] R13: 00007ffe8cc18068 R14: 0000000000000002 R15: 0000000000543540
| [   19.426598][  T184] ------------[ cut here ]------------
| [   19.426863][  T184] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/184
| [   19.427187][  T184] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   19.429225][  T184] Tainted: [W]=WARN
[   19.429370][  T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.429591][  T184] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   19.429812][  T184] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   19.430333][  T184] RSP: 0018:ffa00000008376e8 EFLAGS: 00010286
[   19.430559][  T184] RAX: 00000000ffffffa6 RBX: ff1100000c623e00 RCX: 1ff4000000106ea3
[   19.430802][  T184] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c623ebc
[   19.431053][  T184] RBP: ff1100000ab84000 R08: 1fe22000018c47d9 R09: ff1100000c3cd1e8
[   19.431300][  T184] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000041
[   19.431559][  T184] R13: 0000000000000000 R14: 0000000000000000 R15: ffa0000000837780
[   19.431814][  T184] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   19.432113][  T184] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.432329][  T184] CR2: 00007f7a4794d000 CR3: 000000002af39006 CR4: 0000000000771ef0
[   19.432585][  T184] PKRU: 55555554
[   19.432731][  T184] Call Trace:
[   19.432878][  T184]  <TASK>
[   19.432993][  T184]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   19.433185][  T184]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   19.433334][  T184]  netif_close_many (net/core/dev.c:1804)
[   19.433524][  T184]  ? asym_cpu_capacity_scan (./include/linux/rculist.h:103)
[   19.433703][  T184]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   19.433882][  T184]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.434092][  T184]  ? __dev_close_many (net/core/dev.c:1781)
[   19.434315][  T184]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[   19.434547][  T184]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   19.434765][  T184]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[   19.434950][  T184]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   19.435173][  T184]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.435355][  T184]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.435549][  T184]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   19.435728][  T184]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   19.435911][  T184]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   19.436097][  T184]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   19.436276][  T184]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   19.436466][  T184]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   19.436647][  T184]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   19.436829][  T184] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   19.437014][  T184] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   19.437205][  T184]  __fput (fs/file_table.c:510)
[   19.437357][  T184]  task_work_run (kernel/task_work.c:233)
[   19.437547][  T184]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   19.437725][  T184]  ? task_work_cancel (kernel/task_work.c:190)
[   19.437904][  T184]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   19.438095][  T184]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   19.438244][  T184]  ? exit_notify (kernel/exit.c:748)
[   19.438431][  T184]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.438610][  T184]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   19.438787][  T184]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   19.438966][  T184]  do_group_exit (kernel/exit.c:1119)
[   19.439156][  T184]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   19.439368][  T184]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   19.439555][  T184]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   19.439758][  T184]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   19.439942][  T184]  get_signal (kernel/signal.c:3037)
[   19.440132][  T184]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   19.440317][  T184]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   19.440514][  T184]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   19.440693][  T184]  ? ptrace_signal (./include/linux/signal.h:87)
[   19.440873][  T184]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   19.441058][  T184]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.441240][  T184]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   19.441437][  T184]  ? fd_install (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:960 (discriminator 2) fs/file.c:699 (discriminator 2))
[   19.441622][  T184]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   19.441808][  T184]  ? update_socket_protocol+0x10/0x10
[   19.441992][  T184]  ? alloc_file_clone (fs/file_table.c:477)
[   19.442182][  T184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.442368][  T184]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   19.442615][  T184]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   19.442798][  T184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.442984][  T184]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   19.443176][  T184]  ? irq_exit_rcu (kernel/softirq.c:754)
[   19.443358][  T184]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.443583][  T184] RIP: 0033:0x47ea2b
[   19.443735][  T184] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   19.443969][  T184] RSP: 002b:00007ffe8cc17578 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[   19.444221][  T184] RAX: 0000000000000008 RBX: 00007ffe8cc17650 RCX: 000000000047ea2b
[   19.444476][  T184] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   19.444724][  T184] RBP: 00007ffe8cc175b0 R08: 0000000000000041 R09: 000000001d646450
[   19.444970][  T184] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffe8cc18028
[   19.445233][  T184] R13: 00007ffe8cc18068 R14: 00007ffe8cc17b28 R15: 0000000000543540
| [   19.450410][  T184] ------------[ cut here ]------------
| [   19.450612][  T184] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/184
| [   19.450918][  T184] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   19.451516][  T184] Tainted: [W]=WARN
[   19.451660][  T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.451869][  T184] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   19.452096][  T184] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   19.453137][  T184] RSP: 0018:ffa0000000837818 EFLAGS: 00010286
[   19.453855][  T184] RAX: 00000000ffffffa6 RBX: ff1100000b3de3c0 RCX: 1ff4000000106ec9
[   19.454598][  T184] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b3de47c
[   19.455327][  T184] RBP: ff1100000ab84000 R08: 1fe220000167bc91 R09: ff1100000c3cd1e8
[   19.456095][  T184] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   19.456329][  T184] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   19.456577][  T184] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   19.456849][  T184] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.457063][  T184] CR2: 00007f7a4794d000 CR3: 000000002af39006 CR4: 0000000000771ef0
[   19.457303][  T184] PKRU: 55555554
[   19.457452][  T184] Call Trace:
[   19.457594][  T184]  <TASK>
[   19.457706][  T184]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   19.457912][  T184]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   19.458123][  T184]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.458303][  T184]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.458493][  T184]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   19.458670][  T184]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   19.458849][  T184]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   19.459033][  T184]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   19.459211][  T184]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   19.459389][  T184]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   19.459576][  T184]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   19.459754][  T184] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   19.459936][  T184] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   19.460123][  T184]  __fput (fs/file_table.c:510)
[   19.460271][  T184]  task_work_run (kernel/task_work.c:233)
[   19.460459][  T184]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   19.460635][  T184]  ? task_work_cancel (kernel/task_work.c:190)
[   19.460813][  T184]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   19.460993][  T184]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   19.461149][  T184]  ? exit_notify (kernel/exit.c:748)
[   19.461325][  T184]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.461515][  T184]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   19.461691][  T184]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   19.461870][  T184]  do_group_exit (kernel/exit.c:1119)
[   19.462055][  T184]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   19.462262][  T184]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   19.462448][  T184]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   19.462625][  T184]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   19.462796][  T184]  get_signal (kernel/signal.c:3037)
[   19.462969][  T184]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   19.463149][  T184]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   19.463321][  T184]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   19.463506][  T184]  ? ptrace_signal (./include/linux/signal.h:87)
[   19.463679][  T184]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   19.463849][  T184]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.464034][  T184]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   19.464208][  T184]  ? fd_install (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:960 (discriminator 2) fs/file.c:699 (discriminator 2))
[   19.464383][  T184]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   19.464570][  T184]  ? update_socket_protocol+0x10/0x10
[   19.464743][  T184]  ? alloc_file_clone (fs/file_table.c:477)
[   19.464915][  T184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.465095][  T184]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   19.465309][  T184]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   19.465499][  T184]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.465675][  T184]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   19.465850][  T184]  ? irq_exit_rcu (kernel/softirq.c:754)
[   19.466031][  T184]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.466236][  T184] RIP: 0033:0x47ea2b
[   19.466384][  T184] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   19.466607][  T184] RSP: 002b:00007ffe8cc17578 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[   19.466846][  T184] RAX: 0000000000000008 RBX: 00007ffe8cc17650 RCX: 000000000047ea2b
[   19.467090][  T184] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   19.467327][  T184] RBP: 00007ffe8cc175b0 R08: 0000000000000041 R09: 000000001d646450
[   19.467578][  T184] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffe8cc18028
[   19.467814][  T184] R13: 00007ffe8cc18068 R14: 00007ffe8cc17b28 R15: 0000000000543540
| [   19.482189][   T12] ------------[ cut here ]------------
| [   19.482451][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12
| [   19.482689][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   19.483210][   T12] Tainted: [W]=WARN
[   19.483301][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.483487][   T12] Workqueue: netns cleanup_net
[   19.483626][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   19.483783][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   19.484212][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   19.484361][   T12] RAX: 00000000ffffffa6 RBX: ff1100000b3df1c0 RCX: 1ff4000000018ed5
[   19.484553][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b3df27c
[   19.484733][   T12] RBP: ff110000050e9000 R08: 1fe220000167be51 R09: ff11000001afd260
[   19.484919][   T12] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   19.485113][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   19.485298][   T12] FS:  0000000000000000(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   19.485515][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.485665][   T12] CR2: 00007f70447d5000 CR3: 000000002af39006 CR4: 0000000000771ef0
[   19.485845][   T12] PKRU: 55555554
[   19.485935][   T12] Call Trace:
[   19.486031][   T12]  <TASK>
[   19.486095][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   19.486247][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   19.486397][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   19.486562][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   19.486683][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[   19.486800][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   19.486920][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   19.487050][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   19.487168][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   19.487294][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   19.487421][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   19.487543][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   19.487666][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   19.487785][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   19.487904][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   19.488031][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   19.488151][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.488272][   T12]  process_one_work (kernel/workqueue.c:3314)
[   19.488394][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   19.488522][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   19.488646][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   19.488769][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   19.488893][   T12]  kthread (kernel/kthread.c:436)
[   19.488985][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   19.489139][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   19.489262][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   19.489386][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   19.489539][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   19.489662][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   19.489780][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   19.528221][  T186] ------------[ cut here ]------------
| [   19.528388][  T186] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: unshare/186
| [   19.529096][  T186] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   19.529559][  T186] Tainted: [W]=WARN
[   19.529657][  T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.529818][  T186] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   19.529988][  T186] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   19.530450][  T186] RSP: 0018:ffa00000007f7ab0 EFLAGS: 00010286
[   19.530613][  T186] RAX: 00000000ffffffa6 RBX: ff110000095671c0 RCX: 1ff40000000fef1c
[   19.530807][  T186] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000956727c
[   19.530997][  T186] RBP: ff11000011a9c000 R08: 1fe22000012ace51 R09: ff1100000c4ad210
[   19.531195][  T186] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   19.531385][  T186] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000011a9c000
[   19.531582][  T186] FS:  00007f7960cdd740(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   19.531810][  T186] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.531972][  T186] CR2: 000055bb8e61c008 CR3: 000000000d850004 CR4: 0000000000771ef0
[   19.532172][  T186] PKRU: 55555554
[   19.532267][  T186] Call Trace:
[   19.532364][  T186]  <TASK>
[   19.532436][  T186]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   19.532568][  T186]  ? notifier_call_chain (kernel/notifier.c:85)
[   19.532701][  T186]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   19.532800][  T186]  register_netdevice (net/core/dev.c:11488)
[   19.532930][  T186]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   19.533098][  T186]  register_netdev (net/core/dev.c:11552)
[   19.533227][  T186]  loopback_net_init (drivers/net/loopback.c:218)
[   19.533358][  T186]  ops_init (net/core/net_namespace.c:137)
[   19.533465][  T186]  setup_net (net/core/net_namespace.c:446)
[   19.533564][  T186]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   19.533692][  T186]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   19.533821][  T186]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   19.533952][  T186]  copy_net_ns (net/core/net_namespace.c:579)
[   19.534086][  T186]  create_new_namespaces (kernel/nsproxy.c:132)
[   19.534218][  T186]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   19.534351][  T186]  ksys_unshare (kernel/fork.c:3243)
[   19.534487][  T186]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   19.534643][  T186]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   19.534773][  T186]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   19.534903][  T186]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   19.535038][  T186]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   19.535168][  T186]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   19.535297][  T186]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.535466][  T186] RIP: 0033:0x7f7960dd8bcb
[   19.535605][  T186] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   19.536072][  T186] RSP: 002b:00007ffdbe267e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   19.536269][  T186] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7960dd8bcb
[   19.536469][  T186] RDX: 0000000000000000 RSI: 00007ffdbe267be0 RDI: 0000000040000000
[   19.536663][  T186] RBP: 00007ffdbe268200 R08: 00007ffdbe267dd0 R09: 0000000000000000
[   19.536857][  T186] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   19.537058][  T186] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055bb649fbb68
| [   19.547560][  T186] ------------[ cut here ]------------
| [   19.547729][  T186] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/186
| [   19.547981][  T186] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   19.548480][  T186] Tainted: [W]=WARN
[   19.548580][  T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.548739][  T186] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   19.548905][  T186] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   19.549361][  T186] RSP: 0018:ffa00000007f7b58 EFLAGS: 00010286
[   19.549528][  T186] RAX: 00000000ffffffa6 RBX: ff11000008f1f8c0 RCX: 1ff40000000fef31
[   19.549720][  T186] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008f1f97c
[   19.549909][  T186] RBP: ff1100000918c000 R08: 1fe22000011e3f31 R09: ff1100000c4ad1e8
[   19.550103][  T186] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   19.550295][  T186] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000918c000
[   19.550491][  T186] FS:  000000002107f400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   19.550717][  T186] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.550877][  T186] CR2: 00007fd714876000 CR3: 000000000f480005 CR4: 0000000000771ef0
[   19.551073][  T186] PKRU: 55555554
[   19.551172][  T186] Call Trace:
[   19.551268][  T186]  <TASK>
[   19.551334][  T186]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   19.551468][  T186]  ? notifier_call_chain (kernel/notifier.c:85)
[   19.551598][  T186]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   19.551696][  T186]  register_netdevice (net/core/dev.c:11488)
[   19.551826][  T186]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   19.551985][  T186]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   19.552120][  T186] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[   19.552282][  T186]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[   19.552445][  T186]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[   19.552575][  T186] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[   19.552703][  T186]  ? build_open_flags (fs/open.c:1212)
[   19.552832][  T186]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   19.552963][  T186]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   19.553096][  T186]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   19.553222][  T186]  ? fput_close_sync (fs/file_table.c:615)
[   19.553348][  T186]  ? __ia32_sys_open (fs/open.c:1374)
[   19.553481][  T186]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   19.553611][  T186]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   19.553738][  T186]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   19.553865][  T186]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   19.553994][  T186]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.554157][  T186] RIP: 0033:0x47cc8d
[   19.554258][  T186] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   19.554713][  T186] RSP: 002b:00007ffc1773efe0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   19.554906][  T186] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   19.555098][  T186] RDX: 00007ffc1773f060 RSI: 00000000400454ca RDI: 0000000000000006
[   19.555286][  T186] RBP: 00007ffc1773f030 R08: 0000000000000000 R09: 0000000000000000
[   19.555478][  T186] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc1773f538
[   19.555669][  T186] R13: 00007ffc1773f578 R14: 0000000000000002 R15: 0000000000543540
| [   19.582180][  T187] ------------[ cut here ]------------
| [   19.582330][  T187] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: ifconfig/187
| [   19.583353][  T187] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   19.584046][  T187] Tainted: [W]=WARN
[   19.584142][  T187] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.584297][  T187] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   19.584468][  T187] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   19.584908][  T187] RSP: 0018:ffa0000000807850 EFLAGS: 00010286
[   19.585071][  T187] RAX: 00000000ffffffa6 RBX: ff11000008f1fa80 RCX: 1ff4000000100ed0
[   19.585256][  T187] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008f1fb3c
[   19.585445][  T187] RBP: ff1100000918c000 R08: 1fe22000011e3f69 R09: ff1100000cfbd1e8
[   19.585631][  T187] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
[   19.585815][  T187] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   19.586004][  T187] FS:  00007fac23bdc740(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   19.586229][  T187] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.586384][  T187] CR2: 000055da50d50717 CR3: 0000000005def004 CR4: 0000000000771ef0
[   19.586577][  T187] PKRU: 55555554
[   19.586671][  T187] Call Trace:
[   19.586764][  T187]  <TASK>
[   19.586829][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.586958][  T187]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   19.587089][  T187]  notifier_call_chain (kernel/notifier.c:85)
[   19.587218][  T187]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[   19.587343][  T187]  ? dev_validate_mtu (net/core/dev.c:9842 (discriminator 2))
[   19.587475][  T187]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.587599][  T187]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   19.587725][  T187]  netif_set_mtu (net/core/dev.c:9910)
[   19.587850][  T187]  ? netif_set_mtu_ext (net/core/dev.c:9847 (discriminator 2))
[   19.587973][  T187]  ? static_obj (kernel/locking/lockdep.c:859)
[   19.588078][  T187]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   19.588202][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.588326][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.588456][  T187]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[   19.588580][  T187]  dev_set_mtu (net/core/dev_api.c:249)
[   19.588674][  T187]  dev_ifsioc (net/core/dev_ioctl.c:562)
[   19.588799][  T187]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   19.588925][  T187]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[   19.589052][  T187]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   19.589178][  T187]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   19.589301][  T187]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.589431][  T187]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   19.589555][  T187]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[   19.589650][  T187]  dev_ioctl (net/core/dev_ioctl.c:816)
[   19.589745][  T187]  sock_do_ioctl (net/socket.c:1327)
[   19.589871][  T187]  ? do_pte_missing (mm/memory.c:5900 mm/memory.c:6043 mm/memory.c:4566)
[   19.589995][  T187]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   19.590124][  T187]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 6))
[   19.590248][  T187]  ? __handle_mm_fault (mm/memory.c:6427 mm/memory.c:6565)
[   19.590372][  T187]  ? ioctl_file_clone (fs/ioctl.c:244)
[   19.590506][  T187]  sock_ioctl (net/socket.c:1434)
[   19.590600][  T187]  ? br_ioctl_call (net/socket.c:1279)
[   19.590725][  T187]  ? __up_read (kernel/locking/rwsem.c:1386)
[   19.590848][  T187]  ? __up_read (kernel/locking/rwsem.c:1395 (discriminator 1))
[   19.590972][  T187]  ? down_write_nested (kernel/locking/rwsem.c:1753)
[   19.591104][  T187]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   19.591240][  T187]  ? do_user_addr_fault (./include/linux/mmap_lock.h:619 arch/x86/mm/fault.c:1413)
[   19.591435][  T187]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   19.591598][  T187]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   19.591723][  T187]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   19.591847][  T187]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   19.591973][  T187]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.592130][  T187] RIP: 0033:0x7fac23cd25fd
[   19.592262][  T187] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   19.592711][  T187] RSP: 002b:00007ffc15938f20 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   19.592897][  T187] RAX: ffffffffffffffda RBX: 00007ffc1593a81d RCX: 00007fac23cd25fd
[   19.593089][  T187] RDX: 00007ffc15938fd0 RSI: 0000000000008922 RDI: 0000000000000008
[   19.593274][  T187] RBP: 00007ffc15938f70 R08: 0000000000000000 R09: 00007ffc1593a821
[   19.593465][  T187] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc15939308
[   19.593651][  T187] R13: 0000000000000004 R14: 00007fac23e20000 R15: 000055da50d60918
| [   19.596675][  T186] ------------[ cut here ]------------
| [   19.596814][  T186] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/186
| [   19.597054][  T186] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   19.597522][  T186] Tainted: [W]=WARN
[   19.597611][  T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.597756][  T186] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   19.597911][  T186] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   19.598338][  T186] RSP: 0018:ffa00000007f7c58 EFLAGS: 00010286
[   19.598493][  T186] RAX: 00000000ffffffa6 RBX: ff11000008f1fc40 RCX: 1ff40000000fef51
[   19.598667][  T186] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008f1fcfc
[   19.598842][  T186] RBP: ff1100000918c000 R08: 1fe22000011e3fa1 R09: ff1100000c4ad1e8
[   19.599024][  T186] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
[   19.599202][  T186] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000003
[   19.599376][  T186] FS:  000000002107f400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   19.599588][  T186] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.599736][  T186] CR2: 00007fd714876000 CR3: 000000000f480005 CR4: 0000000000771ef0
[   19.599915][  T186] PKRU: 55555554
[   19.600003][  T186] Call Trace:
[   19.600100][  T186]  <TASK>
[   19.600165][  T186]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.600283][  T186]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   19.600408][  T186]  notifier_call_chain (kernel/notifier.c:85)
[   19.600530][  T186]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[   19.600648][  T186]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[   19.600797][  T186] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   19.600918][  T186]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   19.601044][  T186]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   19.601166][  T186]  ? update_socket_protocol+0x10/0x10
[   19.601283][  T186]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.601408][  T186]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   19.601538][  T186]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   19.601662][  T186]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   19.601780][  T186]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   19.601899][  T186]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.602051][  T186] RIP: 0033:0x47cc8d
[   19.602145][  T186] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   19.602581][  T186] RSP: 002b:00007ffc1773f020 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   19.602759][  T186] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   19.602937][  T186] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   19.603122][  T186] RBP: 00007ffc1773f070 R08: 0000000000000021 R09: 0000000021080450
[   19.603302][  T186] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffc1773f538
[   19.603492][  T186] R13: 00007ffc1773f578 R14: 0000000000000002 R15: 0000000000543540
| [   19.605128][  T186] ------------[ cut here ]------------
| [   19.605257][  T186] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/186
| [   19.605503][  T186] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   19.605977][  T186] Tainted: [W]=WARN
[   19.606078][  T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.606234][  T186] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   19.606395][  T186] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   19.606846][  T186] RSP: 0018:ffa00000007f7910 EFLAGS: 00010286
[   19.607001][  T186] RAX: 00000000ffffffa6 RBX: ff11000008f1f540 RCX: 1ff40000000feee8
[   19.607192][  T186] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008f1f5fc
[   19.607379][  T186] RBP: ff1100000918c000 R08: 1fe22000011e3ec1 R09: ff1100000c4ad1e8
[   19.607567][  T186] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000001
[   19.607754][  T186] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000000010d1
[   19.607940][  T186] FS:  000000002107f400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   19.608165][  T186] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.608320][  T186] CR2: 00007fd714876000 CR3: 000000000f480005 CR4: 0000000000771ef0
[   19.608512][  T186] PKRU: 55555554
[   19.608605][  T186] Call Trace:
[   19.608699][  T186]  <TASK>
[   19.608764][  T186]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   19.608891][  T186]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   19.608987][  T186]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   19.609118][  T186]  __dev_notify_flags (net/core/dev.c:9787)
[   19.609245][  T186]  ? netif_change_name (net/core/dev.c:1495)
[   19.609371][  T186]  ? __dev_change_flags (net/core/dev.c:9752)
[   19.609504][  T186]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   19.609629][  T186]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   19.609754][  T186]  ? dev_ioctl (./include/linux/rtnetlink.h:130 net/core/dev_ioctl.c:815)
[   19.609882][  T186]  netif_change_flags (net/core/dev.c:9820)
[   19.610009][  T186]  dev_change_flags (net/core/dev_api.c:68)
[   19.610141][  T186]  dev_ifsioc (net/core/dev_ioctl.c:555)
[   19.610268][  T186]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   19.610392][  T186]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[   19.610522][  T186]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   19.610649][  T186]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   19.610773][  T186]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.610901][  T186]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   19.611031][  T186]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[   19.611128][  T186]  dev_ioctl (net/core/dev_ioctl.c:816)
[   19.611225][  T186]  sock_do_ioctl (net/socket.c:1327)
[   19.611351][  T186]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   19.611482][  T186]  ? ioctl_file_clone (fs/ioctl.c:244)
[   19.611610][  T186]  sock_ioctl (net/socket.c:1434)
[   19.611705][  T186]  ? br_ioctl_call (net/socket.c:1279)
[   19.611830][  T186]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   19.611958][  T186]  ? update_socket_protocol+0x10/0x10
[   19.612089][  T186]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   19.612218][  T186]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   19.612344][  T186]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   19.612478][  T186]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   19.612601][  T186]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   19.612726][  T186]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.612882][  T186] RIP: 0033:0x47cc8d
[   19.612980][  T186] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   19.613433][  T186] RSP: 002b:00007ffc1773f000 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   19.613620][  T186] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   19.613805][  T186] RDX: 00007ffc1773f070 RSI: 0000000000008914 RDI: 0000000000000007
[   19.613993][  T186] RBP: 00007ffc1773f050 R08: 0000000000000021 R09: 0000000021080450
[   19.614182][  T186] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffc1773f538
[   19.614367][  T186] R13: 00007ffc1773f578 R14: 0000000000000002 R15: 0000000000543540
| [   29.510839][  T186] ------------[ cut here ]------------
| [   29.511058][  T186] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/186
| [   29.511339][  T186] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   29.511879][  T186] Tainted: [W]=WARN
[   29.511986][  T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.512175][  T186] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   29.512359][  T186] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   29.512858][  T186] RSP: 0018:ffa00000007f76e8 EFLAGS: 00010286
[   29.513030][  T186] RAX: 00000000ffffffa6 RBX: ff110000093a0740 RCX: 1ff40000000feea3
[   29.513242][  T186] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000093a07fc
[   29.513449][  T186] RBP: ff1100000918c000 R08: 1fe2200001274101 R09: ff1100000c4ad1e8
[   29.513658][  T186] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000041
[   29.513869][  T186] R13: 0000000000000000 R14: 0000000000000000 R15: ffa00000007f7780
[   29.514085][  T186] FS:  0000000000000000(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   29.514334][  T186] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.514513][  T186] CR2: 00007fdbd4d4c6f0 CR3: 000000002af39006 CR4: 0000000000771ef0
[   29.514722][  T186] PKRU: 55555554
[   29.514825][  T186] Call Trace:
[   29.514931][  T186]  <TASK>
[   29.515005][  T186]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   29.515155][  T186]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   29.515263][  T186]  netif_close_many (net/core/dev.c:1804)
[   29.515410][  T186]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   29.515553][  T186]  ? __dev_close_many (net/core/dev.c:1781)
[   29.515693][  T186]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[   29.515869][  T186]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   29.516040][  T186]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[   29.516181][  T186]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   29.516348][  T186]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   29.516488][  T186]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   29.516625][  T186]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   29.516761][  T186]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   29.516899][  T186]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   29.517037][  T186]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   29.517210][  T186]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   29.517360][  T186]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   29.518173][  T186] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   29.518318][  T186] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   29.518549][  T186]  __fput (fs/file_table.c:510)
[   29.518656][  T186]  task_work_run (kernel/task_work.c:233)
[   29.518792][  T186]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   29.518932][  T186]  ? task_work_cancel (kernel/task_work.c:190)
[   29.519074][  T186]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   29.519213][  T186]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   29.519318][  T186]  ? exit_notify (kernel/exit.c:748)
[   29.519535][  T186]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   29.519671][  T186]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   29.519807][  T186]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   29.519945][  T186]  do_group_exit (kernel/exit.c:1119)
[   29.520085][  T186]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   29.520253][  T186]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   29.520386][  T186]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   29.520590][  T186]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   29.520723][  T186]  get_signal (kernel/signal.c:3037)
[   29.520862][  T186]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   29.520999][  T186]  ? __ia32_sys_getpeername (net/socket.c:2219)
[   29.521140][  T186]  ? _copy_to_user (./include/linux/instrumented.h:129 ./include/linux/uaccess.h:205 lib/usercopy.c:26)
[   29.521277][  T186]  ? ptrace_signal (./include/linux/signal.h:87)
[   29.521505][  T186]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   29.521643][  T186]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   29.521780][  T186]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   29.521917][  T186]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   29.522092][  T186]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   29.522227][  T186]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   29.522362][  T186]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   29.522578][  T186]  ? irq_exit_rcu (kernel/softirq.c:754)
[   29.522715][  T186]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.522885][  T186] RIP: 0033:0x4c2d9e
[   29.522994][  T186] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   29.523174][  T186] RSP: 002b:00007ffc1773e990 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   29.523379][  T186] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   29.523649][  T186] RDX: 0000000000000014 RSI: 00007ffc1773ea70 RDI: 0000000000000008
[   29.523850][  T186] RBP: 00007ffc1773e9a0 R08: 00007ffc1773ea30 R09: 000000000000000c
[   29.524056][  T186] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc1773f538
[   29.524261][  T186] R13: 00007ffc1773f578 R14: 00007ffc1773eb60 R15: 0000000000543540
| [   29.528803][  T186] ------------[ cut here ]------------
| [   29.528960][  T186] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/186
| [   29.529232][  T186] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   29.529735][  T186] Tainted: [W]=WARN
[   29.529835][  T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.530000][  T186] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   29.530172][  T186] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   29.530643][  T186] RSP: 0018:ffa00000007f7818 EFLAGS: 00010286
[   29.530815][  T186] RAX: 00000000ffffffa6 RBX: ff110000093a18c0 RCX: 1ff40000000feec9
[   29.531010][  T186] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000093a197c
[   29.531219][  T186] RBP: ff1100000918c000 R08: 1fe2200001274331 R09: ff1100000c4ad1e8
[   29.531419][  T186] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   29.531620][  T186] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   29.531819][  T186] FS:  0000000000000000(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   29.532054][  T186] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.532219][  T186] CR2: 00007fdbd4d4c6f0 CR3: 000000002af39006 CR4: 0000000000771ef0
[   29.532418][  T186] PKRU: 55555554
[   29.532518][  T186] Call Trace:
[   29.532618][  T186]  <TASK>
[   29.532688][  T186]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   29.532858][  T186]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   29.533026][  T186]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   29.533166][  T186]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   29.533302][  T186]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   29.533443][  T186]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   29.533578][  T186]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   29.533715][  T186]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   29.533843][  T186]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   29.533970][  T186]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   29.534104][  T186] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   29.534237][  T186] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   29.534365][  T186]  __fput (fs/file_table.c:510)
[   29.534471][  T186]  task_work_run (kernel/task_work.c:233)
[   29.534599][  T186]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   29.534729][  T186]  ? task_work_cancel (kernel/task_work.c:190)
[   29.534860][  T186]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   29.534990][  T186]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   29.535096][  T186]  ? exit_notify (kernel/exit.c:748)
[   29.535225][  T186]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   29.535356][  T186]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   29.535492][  T186]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   29.535633][  T186]  do_group_exit (kernel/exit.c:1119)
[   29.535762][  T186]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   29.535927][  T186]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   29.536065][  T186]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   29.536199][  T186]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   29.536330][  T186]  get_signal (kernel/signal.c:3037)
[   29.536466][  T186]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   29.536597][  T186]  ? __ia32_sys_getpeername (net/socket.c:2219)
[   29.536726][  T186]  ? _copy_to_user (./include/linux/instrumented.h:129 ./include/linux/uaccess.h:205 lib/usercopy.c:26)
[   29.536854][  T186]  ? ptrace_signal (./include/linux/signal.h:87)
[   29.536987][  T186]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   29.537126][  T186]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   29.537263][  T186]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   29.537396][  T186]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   29.538058][  T186]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   29.538190][  T186]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   29.538319][  T186]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   29.538503][  T186]  ? irq_exit_rcu (kernel/softirq.c:754)
[   29.538632][  T186]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.538792][  T186] RIP: 0033:0x4c2d9e
[   29.538897][  T186] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   29.539071][  T186] RSP: 002b:00007ffc1773e990 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   29.539271][  T186] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   29.539528][  T186] RDX: 0000000000000014 RSI: 00007ffc1773ea70 RDI: 0000000000000008
[   29.539717][  T186] RBP: 00007ffc1773e9a0 R08: 00007ffc1773ea30 R09: 000000000000000c
[   29.539907][  T186] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc1773f538
[   29.540106][  T186] R13: 00007ffc1773f578 R14: 00007ffc1773eb60 R15: 0000000000543540
| [   29.563693][   T12] ------------[ cut here ]------------
| [   29.563847][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: 0/12
| [   29.564113][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   29.564571][   T12] Tainted: [W]=WARN
[   29.564660][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.564810][   T12] Workqueue: netns cleanup_net
[   29.564934][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   29.565089][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   29.565519][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   29.565669][   T12] RAX: 00000000ffffffa6 RBX: ff110000059703c0 RCX: 1ff4000000018ed5
[   29.565844][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000597047c
[   29.566018][   T12] RBP: ff11000011a9c000 R08: 1fe2200000b2e091 R09: ff11000001afd260
[   29.566200][   T12] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[   29.566377][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   29.566566][   T12] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[   29.566775][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.566922][   T12] CR2: 0000555f7647cd5c CR3: 000000000d848002 CR4: 0000000000771ef0
[   29.567107][   T12] PKRU: 55555554
[   29.567197][   T12] Call Trace:
[   29.567286][   T12]  <TASK>
[   29.567349][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   29.567508][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   29.567660][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   29.567782][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   29.567901][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[   29.568017][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   29.568142][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   29.568260][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   29.568376][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   29.568507][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   29.568629][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   29.568747][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   29.568869][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   29.568997][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   29.569121][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   29.569241][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   29.569356][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   29.569481][   T12]  process_one_work (kernel/workqueue.c:3314)
[   29.569602][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   29.569723][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   29.569927][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   29.570076][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   29.570195][   T12]  kthread (kernel/kthread.c:436)
[   29.570286][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   29.570449][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   29.570568][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   29.570693][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   29.570844][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   29.570961][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   29.571088][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   29.597493][  T189] ------------[ cut here ]------------
| [   29.597642][  T189] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: unshare/189
| [   29.597900][  T189] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   29.598366][  T189] Tainted: [W]=WARN
[   29.598473][  T189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.598640][  T189] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   29.598813][  T189] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   29.599298][  T189] RSP: 0018:ffa0000000837ab0 EFLAGS: 00010286
[   29.599476][  T189] RAX: 00000000ffffffa6 RBX: ff11000009b3e040 RCX: 1ff4000000106f1c
[   29.599674][  T189] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000009b3e0fc
[   29.599873][  T189] RBP: ff11000011c94000 R08: 1fe2200001367c21 R09: ff11000008d35210
[   29.600079][  T189] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   29.600277][  T189] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000011c94000
[   29.600482][  T189] FS:  00007f15d0032740(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   29.600718][  T189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.600887][  T189] CR2: 00007f15d01f4280 CR3: 000000000d8e5005 CR4: 0000000000771ef0
[   29.601092][  T189] PKRU: 55555554
[   29.601192][  T189] Call Trace:
[   29.601292][  T189]  <TASK>
[   29.601362][  T189]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   29.601504][  T189]  ? notifier_call_chain (kernel/notifier.c:85)
[   29.601641][  T189]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   29.601744][  T189]  register_netdevice (net/core/dev.c:11488)
[   29.601875][  T189]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   29.602037][  T189]  register_netdev (net/core/dev.c:11552)
[   29.602172][  T189]  loopback_net_init (drivers/net/loopback.c:218)
[   29.602304][  T189]  ops_init (net/core/net_namespace.c:137)
[   29.602413][  T189]  setup_net (net/core/net_namespace.c:446)
[   29.602515][  T189]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   29.602648][  T189]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   29.602780][  T189]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   29.602911][  T189]  copy_net_ns (net/core/net_namespace.c:579)
[   29.603040][  T189]  create_new_namespaces (kernel/nsproxy.c:132)
[   29.603178][  T189]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   29.603309][  T189]  ksys_unshare (kernel/fork.c:3243)
[   29.603445][  T189]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   29.603579][  T189]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   29.603708][  T189]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   29.603838][  T189]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   29.603967][  T189]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   29.604101][  T189]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   29.604231][  T189]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.604389][  T189] RIP: 0033:0x7f15d012dbcb
[   29.604529][  T189] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   29.604988][  T189] RSP: 002b:00007ffcdc0697b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   29.605189][  T189] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15d012dbcb
[   29.605380][  T189] RDX: 0000000000000000 RSI: 00007ffcdc069520 RDI: 0000000040000000
[   29.605577][  T189] RBP: 00007ffcdc069b40 R08: 00007ffcdc069710 R09: 0000000000000000
[   29.605769][  T189] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   29.605967][  T189] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000555c9f25ab68
| [   29.616777][  T189] ------------[ cut here ]------------
| [   29.616927][  T189] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/189
| [   29.617179][  T189] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   29.617668][  T189] Tainted: [W]=WARN
[   29.617760][  T189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.617913][  T189] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   29.618079][  T189] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   29.618517][  T189] RSP: 0018:ffa0000000837b58 EFLAGS: 00010286
[   29.618671][  T189] RAX: 00000000ffffffa6 RBX: ff110000059cd380 RCX: 1ff4000000106f31
[   29.618853][  T189] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000059cd43c
[   29.619033][  T189] RBP: ff1100000f578000 R08: 1fe2200000b39a89 R09: ff11000008d351e8
[   29.619229][  T189] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   29.619418][  T189] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000f578000
[   29.619603][  T189] FS:  0000000029fe3400(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   29.619814][  T189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.619974][  T189] CR2: 00007f473b9ec000 CR3: 000000000d897006 CR4: 0000000000771ef0
[   29.620166][  T189] PKRU: 55555554
[   29.620258][  T189] Call Trace:
[   29.620349][  T189]  <TASK>
[   29.620417][  T189]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   29.620546][  T189]  ? notifier_call_chain (kernel/notifier.c:85)
[   29.620668][  T189]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   29.620763][  T189]  register_netdevice (net/core/dev.c:11488)
[   29.620886][  T189]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   29.621037][  T189]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   29.621173][  T189] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[   29.621330][  T189]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[   29.622112][  T189]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[   29.622249][  T189] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[   29.622377][  T189]  ? build_open_flags (fs/open.c:1212)
[   29.622509][  T189]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   29.622637][  T189]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   29.622765][  T189]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   29.622892][  T189]  ? fput_close_sync (fs/file_table.c:615)
[   29.623019][  T189]  ? __ia32_sys_open (fs/open.c:1374)
[   29.623153][  T189]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   29.623280][  T189]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   29.623410][  T189]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   29.623531][  T189]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   29.623654][  T189]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.623805][  T189] RIP: 0033:0x47cc8d
[   29.623902][  T189] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   29.624338][  T189] RSP: 002b:00007ffd6f6d9b10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   29.624528][  T189] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   29.624712][  T189] RDX: 00007ffd6f6d9b90 RSI: 00000000400454ca RDI: 0000000000000006
[   29.624893][  T189] RBP: 00007ffd6f6d9b60 R08: 0000000000000000 R09: 0000000000000000
[   29.625081][  T189] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6f6da068
[   29.625262][  T189] R13: 00007ffd6f6da0a8 R14: 0000000000000002 R15: 0000000000543540
| [   29.626883][  T189] ------------[ cut here ]------------
| [   29.627003][  T189] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/189
| [   29.627247][  T189] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   29.627720][  T189] Tainted: [W]=WARN
[   29.627809][  T189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.627956][  T189] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   29.628118][  T189] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   29.628551][  T189] RSP: 0018:ffa0000000837c58 EFLAGS: 00010286
[   29.628706][  T189] RAX: 00000000ffffffa6 RBX: ff110000059cd1c0 RCX: 1ff4000000106f51
[   29.628890][  T189] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000059cd27c
[   29.629072][  T189] RBP: ff1100000f578000 R08: 1fe2200000b39a51 R09: ff11000008d351e8
[   29.629249][  T189] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
[   29.629430][  T189] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000
[   29.629609][  T189] FS:  0000000029fe3400(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   29.629825][  T189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.629978][  T189] CR2: 00007f473b9ec000 CR3: 000000000d897006 CR4: 0000000000771ef0
[   29.630168][  T189] PKRU: 55555554
[   29.630260][  T189] Call Trace:
[   29.630352][  T189]  <TASK>
[   29.630418][  T189]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   29.630540][  T189]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   29.630666][  T189]  notifier_call_chain (kernel/notifier.c:85)
[   29.630794][  T189]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[   29.630918][  T189]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[   29.631078][  T189] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   29.631202][  T189]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   29.631327][  T189]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   29.631458][  T189]  ? update_socket_protocol+0x10/0x10
[   29.631584][  T189]  ? alloc_file_clone (fs/file_table.c:477)
[   29.631707][  T189]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   29.631829][  T189]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   29.631953][  T189]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   29.632078][  T189]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   29.632202][  T189]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.632354][  T189] RIP: 0033:0x47cc8d
[   29.632457][  T189] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   29.632890][  T189] RSP: 002b:00007ffd6f6d9b50 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   29.633077][  T189] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   29.633258][  T189] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   29.633440][  T189] RBP: 00007ffd6f6d9ba0 R08: 0000000000000000 R09: 0000000000000000
[   29.633615][  T189] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6f6da068
[   29.633795][  T189] R13: 00007ffd6f6da0a8 R14: 0000000000000002 R15: 0000000000543540
| [   29.639024][  T189] ------------[ cut here ]------------
| [   29.639179][  T189] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/189
| [   29.639435][  T189] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   29.639909][  T189] Tainted: [W]=WARN
[   29.640004][  T189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.640164][  T189] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   29.640325][  T189] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   29.640775][  T189] RSP: 0018:ffa0000000837850 EFLAGS: 00010286
[   29.640932][  T189] RAX: 00000000ffffffa6 RBX: ff110000059cd540 RCX: 1ff4000000106ed0
[   29.641123][  T189] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000059cd5fc
[   29.641310][  T189] RBP: ff1100000f578000 R08: 1fe2200000b39ac1 R09: ff11000008d351e8
[   29.641500][  T189] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
[   29.641685][  T189] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000005882c00
[   29.641872][  T189] FS:  0000000029fe3400(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   29.642097][  T189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.642253][  T189] CR2: 00007f473b9ec000 CR3: 000000000d897006 CR4: 0000000000771ef0
[   29.642448][  T189] PKRU: 55555554
[   29.642541][  T189] Call Trace:
[   29.642634][  T189]  <TASK>
[   29.642699][  T189]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   29.642826][  T189]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   29.642924][  T189]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   29.643055][  T189]  __dev_notify_flags (net/core/dev.c:9787)
[   29.643183][  T189]  ? netif_change_name (net/core/dev.c:1495)
[   29.643307][  T189]  ? __dev_change_flags (net/core/dev.c:9752)
[   29.643438][  T189]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   29.643565][  T189]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   29.643692][  T189]  netif_change_flags (net/core/dev.c:9820)
[   29.643819][  T189]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   29.643947][  T189]  dev_change_flags (net/core/dev_api.c:68)
[   29.644081][  T189]  devinet_ioctl (net/ipv4/devinet.c:1199)
[   29.644214][  T189]  ? inet_ifa_byprefix (net/ipv4/devinet.c:619 (discriminator 9))
[   29.644345][  T189]  ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18)
[   29.644483][  T189]  inet_ioctl (net/ipv4/af_inet.c:1011)
[   29.644578][  T189]  ? inet_dgram_connect (net/ipv4/af_inet.c:589)
[   29.644703][  T189]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   29.644839][  T189]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   29.644970][  T189]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   29.645101][  T189]  sock_do_ioctl (net/socket.c:1313)
[   29.645228][  T189]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   29.645356][  T189]  ? ioctl_file_clone (fs/ioctl.c:244)
[   29.645493][  T189]  sock_ioctl (net/socket.c:1434)
[   29.645588][  T189]  ? br_ioctl_call (net/socket.c:1279)
[   29.645715][  T189]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   29.645844][  T189]  ? update_socket_protocol+0x10/0x10
[   29.645969][  T189]  ? alloc_file_clone (fs/file_table.c:477)
[   29.646104][  T189]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   29.646230][  T189]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   29.646354][  T189]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   29.646485][  T189]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   29.646611][  T189]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.646767][  T189] RIP: 0033:0x47cc8d
[   29.646865][  T189] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   29.647314][  T189] RSP: 002b:00007ffd6f6d9b30 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   29.647509][  T189] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   29.647703][  T189] RDX: 00007ffd6f6d9ba0 RSI: 0000000000008914 RDI: 0000000000000007
[   29.647898][  T189] RBP: 00007ffd6f6d9b80 R08: 0000000000000000 R09: 0000000000000000
[   29.648096][  T189] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6f6da068
[   29.648289][  T189] R13: 00007ffd6f6da0a8 R14: 0000000000000002 R15: 0000000000543540
| [   39.584063][  T189] ------------[ cut here ]------------
| [   39.584269][  T189] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/189
| [   39.584547][  T189] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   39.585066][  T189] Tainted: [W]=WARN
[   39.585202][  T189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   39.585375][  T189] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   39.585556][  T189] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   39.586030][  T189] RSP: 0018:ffa00000008376e8 EFLAGS: 00010286
[   39.586205][  T189] RAX: 00000000ffffffa6 RBX: ff110000059b7a80 RCX: 1ff4000000106ea3
[   39.586591][  T189] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000059b7b3c
[   39.586790][  T189] RBP: ff1100000f578000 R08: 1fe2200000b36f69 R09: ff11000008d351e8
[   39.586990][  T189] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000041
[   39.587192][  T189] R13: 0000000000000000 R14: 0000000000000000 R15: ffa0000000837780
[   39.587392][  T189] FS:  0000000000000000(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   39.587634][  T189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.587801][  T189] CR2: 00007f473b9ec000 CR3: 000000002af39001 CR4: 0000000000771ef0
[   39.588003][  T189] PKRU: 55555554
[   39.588108][  T189] Call Trace:
[   39.588208][  T189]  <TASK>
[   39.588279][  T189]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   39.588419][  T189]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   39.588529][  T189]  netif_close_many (net/core/dev.c:1804)
[   39.588664][  T189]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.588800][  T189]  ? __dev_close_many (net/core/dev.c:1781)
[   39.588931][  T189]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[   39.589100][  T189]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   39.589268][  T189]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[   39.589406][  T189]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   39.589572][  T189]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.589706][  T189]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.589839][  T189]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   39.589973][  T189]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   39.590113][  T189]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   39.590249][  T189]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   39.590383][  T189]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   39.590520][  T189]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   39.590655][  T189] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   39.590798][  T189] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   39.590937][  T189]  __fput (fs/file_table.c:510)
[   39.591044][  T189]  task_work_run (kernel/task_work.c:233)
[   39.591182][  T189]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   39.591315][  T189]  ? task_work_cancel (kernel/task_work.c:190)
[   39.591452][  T189]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   39.591587][  T189]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   39.591689][  T189]  ? exit_notify (kernel/exit.c:748)
[   39.591823][  T189]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.591956][  T189]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   39.592090][  T189]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   39.592224][  T189]  do_group_exit (kernel/exit.c:1119)
[   39.592355][  T189]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   39.592523][  T189]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   39.592655][  T189]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   39.592789][  T189]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   39.592921][  T189]  get_signal (kernel/signal.c:3037)
[   39.593055][  T189]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   39.593193][  T189]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   39.593325][  T189]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   39.593464][  T189]  ? ptrace_signal (./include/linux/signal.h:87)
[   39.593597][  T189]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   39.593729][  T189]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.593864][  T189]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   39.593999][  T189]  ? fd_install (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:960 (discriminator 2) fs/file.c:699 (discriminator 2))
[   39.594139][  T189]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   39.594276][  T189]  ? update_socket_protocol+0x10/0x10
[   39.594414][  T189]  ? alloc_file_clone (fs/file_table.c:477)
[   39.594546][  T189]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.594679][  T189]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   39.594850][  T189]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   39.594985][  T189]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.595122][  T189]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   39.595256][  T189]  ? irq_exit_rcu (kernel/softirq.c:754)
[   39.595390][  T189]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   39.595562][  T189] RIP: 0033:0x47ea2b
[   39.595670][  T189] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   39.595842][  T189] RSP: 002b:00007ffd6f6d95b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
[   39.596044][  T189] RAX: 0000000000000008 RBX: 00007ffd6f6d9690 RCX: 000000000047ea2b
[   39.596252][  T189] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   39.596455][  T189] RBP: 00007ffd6f6d95f0 R08: 0000000000000041 R09: 0000000029fe4450
[   39.596655][  T189] R10: 0000000000000040 R11: 0000000000000206 R12: 00007ffd6f6da068
[   39.596855][  T189] R13: 00007ffd6f6da0a8 R14: 00007ffd6f6d9b68 R15: 0000000000543540
| [   39.606595][  T189] ------------[ cut here ]------------
| [   39.606745][  T189] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/189
| [   39.607003][  T189] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   39.607510][  T189] Tainted: [W]=WARN
[   39.607611][  T189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   39.607775][  T189] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   39.607945][  T189] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   39.608421][  T189] RSP: 0018:ffa0000000837818 EFLAGS: 00010286
[   39.608588][  T189] RAX: 00000000ffffffa6 RBX: ff110000056f0c80 RCX: 1ff4000000106ec9
[   39.608781][  T189] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000056f0d3c
[   39.608972][  T189] RBP: ff1100000f578000 R08: 1fe2200000ade1a9 R09: ff11000008d351e8
[   39.609170][  T189] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   39.609363][  T189] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   39.609714][  T189] FS:  0000000000000000(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   39.609942][  T189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.610109][  T189] CR2: 00007f473b9ec000 CR3: 000000002af39001 CR4: 0000000000771ef0
[   39.610305][  T189] PKRU: 55555554
[   39.610410][  T189] Call Trace:
[   39.610509][  T189]  <TASK>
[   39.610578][  T189]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   39.610744][  T189]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   39.610906][  T189]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.611036][  T189]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.611170][  T189]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   39.611300][  T189]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   39.611436][  T189]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   39.611565][  T189]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   39.611695][  T189]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   39.611824][  T189]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   39.611952][  T189] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   39.612090][  T189] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   39.612221][  T189]  __fput (fs/file_table.c:510)
[   39.612323][  T189]  task_work_run (kernel/task_work.c:233)
[   39.612455][  T189]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   39.612584][  T189]  ? task_work_cancel (kernel/task_work.c:190)
[   39.612711][  T189]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   39.612843][  T189]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   39.612942][  T189]  ? exit_notify (kernel/exit.c:748)
[   39.613071][  T189]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.613205][  T189]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   39.613332][  T189]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   39.613466][  T189]  do_group_exit (kernel/exit.c:1119)
[   39.613595][  T189]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   39.613754][  T189]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   39.613883][  T189]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   39.614010][  T189]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   39.614145][  T189]  get_signal (kernel/signal.c:3037)
[   39.614275][  T189]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   39.614409][  T189]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   39.614536][  T189]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   39.614667][  T189]  ? ptrace_signal (./include/linux/signal.h:87)
[   39.614796][  T189]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   39.614922][  T189]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.615051][  T189]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   39.615186][  T189]  ? fd_install (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:960 (discriminator 2) fs/file.c:699 (discriminator 2))
[   39.615315][  T189]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   39.615449][  T189]  ? update_socket_protocol+0x10/0x10
[   39.615579][  T189]  ? alloc_file_clone (fs/file_table.c:477)
[   39.615707][  T189]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.615836][  T189]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   39.615996][  T189]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   39.616129][  T189]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.616258][  T189]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   39.616389][  T189]  ? irq_exit_rcu (kernel/softirq.c:754)
[   39.616525][  T189]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   39.616693][  T189] RIP: 0033:0x47ea2b
[   39.616799][  T189] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   39.616972][  T189] RSP: 002b:00007ffd6f6d95b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
[   39.617175][  T189] RAX: 0000000000000008 RBX: 00007ffd6f6d9690 RCX: 000000000047ea2b
[   39.617366][  T189] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   39.617561][  T189] RBP: 00007ffd6f6d95f0 R08: 0000000000000041 R09: 0000000029fe4450
[   39.617753][  T189] R10: 0000000000000040 R11: 0000000000000206 R12: 00007ffd6f6da068
[   39.617946][  T189] R13: 00007ffd6f6da0a8 R14: 00007ffd6f6d9b68 R15: 0000000000543540
| [   39.632204][   T12] ------------[ cut here ]------------
| [   39.632349][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: 0/12
| [   39.632601][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   39.633050][   T12] Tainted: [W]=WARN
[   39.633149][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   39.633296][   T12] Workqueue: netns cleanup_net
[   39.633428][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   39.633580][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   39.634005][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   39.634156][   T12] RAX: 00000000ffffffa6 RBX: ff110000056f18c0 RCX: 1ff4000000018ed5
[   39.634335][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000056f197c
[   39.634518][   T12] RBP: ff11000011c94000 R08: 1fe2200000ade331 R09: ff11000001afd260
[   39.634692][   T12] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[   39.634882][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   39.635062][   T12] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[   39.635271][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.635424][   T12] CR2: 0000555f7647cd5c CR3: 000000002af39001 CR4: 0000000000771ef0
[   39.635603][   T12] PKRU: 55555554
[   39.635699][   T12] Call Trace:
[   39.635786][   T12]  <TASK>
[   39.635849][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   39.635998][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   39.636152][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   39.636273][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   39.636393][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[   39.636517][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   39.636635][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   39.636754][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   39.636870][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   39.636990][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   39.637116][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   39.637233][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   39.637355][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   39.637479][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   39.637595][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   39.637714][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   39.637830][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.637950][   T12]  process_one_work (kernel/workqueue.c:3314)
[   39.638070][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   39.638231][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   39.638352][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   39.638481][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   39.638598][   T12]  kthread (kernel/kthread.c:436)
[   39.638691][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   39.638841][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   39.638959][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   39.639084][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   39.639232][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   39.639354][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   39.639475][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   39.669845][  T191] ------------[ cut here ]------------
| [   39.670008][  T191] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: unshare/191
| [   39.670273][  T191] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   39.671466][  T191] Tainted: [W]=WARN
[   39.671564][  T191] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   39.671725][  T191] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   39.671894][  T191] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   39.672359][  T191] RSP: 0018:ffa0000000827ab0 EFLAGS: 00010286
[   39.672527][  T191] RAX: 00000000ffffffa6 RBX: ff11000008d0fc40 RCX: 1ff4000000104f1c
[   39.672719][  T191] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008d0fcfc
[   39.672912][  T191] RBP: ff1100000ab89000 R08: 1fe22000011a1fa1 R09: ff11000004db8b90
[   39.673109][  T191] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   39.673299][  T191] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000ab89000
[   39.673498][  T191] FS:  00007f9f994ef740(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   39.673725][  T191] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.673887][  T191] CR2: 00007f9f996b1280 CR3: 000000000d837005 CR4: 0000000000771ef0
[   39.674086][  T191] PKRU: 55555554
[   39.674184][  T191] Call Trace:
[   39.674281][  T191]  <TASK>
[   39.674347][  T191]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   39.674482][  T191]  ? notifier_call_chain (kernel/notifier.c:85)
[   39.674613][  T191]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   39.674712][  T191]  register_netdevice (net/core/dev.c:11488)
[   39.674842][  T191]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   39.675006][  T191]  register_netdev (net/core/dev.c:11552)
[   39.675140][  T191]  loopback_net_init (drivers/net/loopback.c:218)
[   39.675272][  T191]  ops_init (net/core/net_namespace.c:137)
[   39.675371][  T191]  setup_net (net/core/net_namespace.c:446)
[   39.675476][  T191]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   39.675604][  T191]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   39.675733][  T191]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   39.675863][  T191]  copy_net_ns (net/core/net_namespace.c:579)
[   39.675993][  T191]  create_new_namespaces (kernel/nsproxy.c:132)
[   39.676129][  T191]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   39.676259][  T191]  ksys_unshare (kernel/fork.c:3243)
[   39.676390][  T191]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   39.676526][  T191]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   39.676653][  T191]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   39.676782][  T191]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   39.676910][  T191]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   39.677037][  T191]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   39.677171][  T191]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   39.677331][  T191] RIP: 0033:0x7f9f995eabcb
[   39.677471][  T191] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   39.677926][  T191] RSP: 002b:00007ffcd9e43cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   39.678123][  T191] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9f995eabcb
[   39.678317][  T191] RDX: 0000000000000000 RSI: 00007ffcd9e43a40 RDI: 0000000040000000
[   39.678510][  T191] RBP: 00007ffcd9e44060 R08: 00007ffcd9e43c30 R09: 0000000000000000
[   39.678702][  T191] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   39.678893][  T191] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000557628996b68
| [   39.687294][  T191] ------------[ cut here ]------------
| [   39.687881][  T191] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/191
| [   39.688133][  T191] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   39.689067][  T191] Tainted: [W]=WARN
[   39.689166][  T191] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   39.689325][  T191] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   39.689975][  T191] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   39.691120][  T191] RSP: 0018:ffa0000000827b58 EFLAGS: 00010286
[   39.691277][  T191] RAX: 00000000ffffffa6 RBX: ff1100000b15e200 RCX: 1ff4000000104f31
[   39.691631][  T191] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b15e2bc
[   39.691813][  T191] RBP: ff1100000a924000 R08: 1fe220000162bc59 R09: ff11000004db8b68
[   39.691994][  T191] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   39.692183][  T191] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000a924000
[   39.692366][  T191] FS:  00000000351d1400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   39.692584][  T191] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.692736][  T191] CR2: 00007fa56f28b000 CR3: 000000000c7fc006 CR4: 0000000000771ef0
[   39.692919][  T191] PKRU: 55555554
[   39.693010][  T191] Call Trace:
[   39.693107][  T191]  <TASK>
[   39.693172][  T191]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   39.693295][  T191]  ? notifier_call_chain (kernel/notifier.c:85)
[   39.693425][  T191]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   39.693520][  T191]  register_netdevice (net/core/dev.c:11488)
[   39.693644][  T191]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   39.693797][  T191]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   39.693922][  T191] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[   39.694077][  T191]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[   39.694236][  T191]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[   39.694360][  T191] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[   39.694489][  T191]  ? build_open_flags (fs/open.c:1212)
[   39.694614][  T191]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   39.694736][  T191]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   39.694860][  T191]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   39.694982][  T191]  ? fput_close_sync (fs/file_table.c:615)
[   39.695109][  T191]  ? __ia32_sys_open (fs/open.c:1374)
[   39.695232][  T191]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   39.695356][  T191]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   39.695494][  T191]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   39.695616][  T191]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   39.695746][  T191]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   39.695899][  T191] RIP: 0033:0x47cc8d
[   39.695996][  T191] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   39.696440][  T191] RSP: 002b:00007ffd014f4fa0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   39.696627][  T191] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   39.696809][  T191] RDX: 00007ffd014f5020 RSI: 00000000400454ca RDI: 0000000000000006
[   39.696991][  T191] RBP: 00007ffd014f4ff0 R08: 0000000000000000 R09: 0000000000000000
[   39.697177][  T191] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd014f54f8
[   39.697359][  T191] R13: 00007ffd014f5538 R14: 0000000000000002 R15: 0000000000543540
| [   39.720761][  T192] ------------[ cut here ]------------
| [   39.720917][  T192] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: ifconfig/192
| [   39.721168][  T192] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   39.721629][  T192] Tainted: [W]=WARN
[   39.721722][  T192] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   39.721877][  T192] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   39.722036][  T192] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   39.723064][  T192] RSP: 0018:ffa0000000657850 EFLAGS: 00010286
[   39.723224][  T192] RAX: 00000000ffffffa6 RBX: ff1100000b15f540 RCX: 1ff40000000caed0
[   39.724227][  T192] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b15f5fc
[   39.724417][  T192] RBP: ff1100000a924000 R08: 1fe220000162bec1 R09: ff11000005e72ea8
[   39.724606][  T192] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
[   39.724790][  T192] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
[   39.724973][  T192] FS:  00007fb4eb358740(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[   39.725195][  T192] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.725350][  T192] CR2: 0000561f3d8205fa CR3: 000000000c06e005 CR4: 0000000000771ef0
[   39.725545][  T192] PKRU: 55555554
[   39.725636][  T192] Call Trace:
[   39.725727][  T192]  <TASK>
[   39.725791][  T192]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.725916][  T192]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   39.726041][  T192]  notifier_call_chain (kernel/notifier.c:85)
[   39.726173][  T192]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[   39.726296][  T192]  ? dev_validate_mtu (net/core/dev.c:9842 (discriminator 2))
[   39.726426][  T192]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   39.726549][  T192]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   39.726674][  T192]  netif_set_mtu (net/core/dev.c:9910)
[   39.726797][  T192]  ? netif_set_mtu_ext (net/core/dev.c:9847 (discriminator 2))
[   39.726923][  T192]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   39.727046][  T192]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.727175][  T192]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.727297][  T192]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[   39.727427][  T192]  dev_set_mtu (net/core/dev_api.c:249)
[   39.727521][  T192]  dev_ifsioc (net/core/dev_ioctl.c:562)
[   39.727643][  T192]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   39.727765][  T192]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[   39.727888][  T192]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   39.728014][  T192]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   39.728140][  T192]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.728264][  T192]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   39.728387][  T192]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[   39.728488][  T192]  dev_ioctl (net/core/dev_ioctl.c:816)
[   39.728582][  T192]  sock_do_ioctl (net/socket.c:1327)
[   39.728704][  T192]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 6))
[   39.728829][  T192]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   39.728953][  T192]  ? __handle_mm_fault (mm/memory.c:6443 mm/memory.c:6565)
[   39.729077][  T192]  ? ioctl_file_clone (fs/ioctl.c:244)
[   39.729211][  T192]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   39.729335][  T192]  sock_ioctl (net/socket.c:1434)
[   39.729434][  T192]  ? br_ioctl_call (net/socket.c:1279)
[   39.729556][  T192]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.729680][  T192]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   39.729805][  T192]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   39.729930][  T192]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   39.730054][  T192]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   39.730183][  T192]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   39.730305][  T192]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   39.730433][  T192]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   39.730583][  T192] RIP: 0033:0x7fb4eb44e5fd
[   39.730712][  T192] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   39.731154][  T192] RSP: 002b:00007ffc9a72c2b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   39.731338][  T192] RAX: ffffffffffffffda RBX: 00007ffc9a72e81d RCX: 00007fb4eb44e5fd
[   39.731527][  T192] RDX: 00007ffc9a72c360 RSI: 0000000000008922 RDI: 0000000000000008
[   39.731710][  T192] RBP: 00007ffc9a72c300 R08: 0000000000000000 R09: 00007ffc9a72e821
[   39.731892][  T192] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc9a72c698
[   39.732074][  T192] R13: 0000000000000004 R14: 00007fb4eb59c000 R15: 0000561f3d81e918
| [   39.735047][  T191] ------------[ cut here ]------------
| [   39.735180][  T191] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/191
| [   39.735427][  T191] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   39.735884][  T191] Tainted: [W]=WARN
[   39.735974][  T191] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   39.736125][  T191] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   39.736278][  T191] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   39.736715][  T191] RSP: 0018:ffa0000000827c58 EFLAGS: 00010286
[   39.736862][  T191] RAX: 00000000ffffffa6 RBX: ff1100000b15e040 RCX: 1ff4000000104f51
[   39.737038][  T191] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b15e0fc
[   39.737220][  T191] RBP: ff1100000a924000 R08: 1fe220000162bc21 R09: ff11000004db8b68
[   39.737394][  T191] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
[   39.737577][  T191] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000003
[   39.737753][  T191] FS:  00000000351d1400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   39.737961][  T191] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.738114][  T191] CR2: 00007fa56f28b000 CR3: 000000000c7fc006 CR4: 0000000000771ef0
[   39.738290][  T191] PKRU: 55555554
[   39.738379][  T191] Call Trace:
[   39.738472][  T191]  <TASK>
[   39.738533][  T191]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.738653][  T191]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   39.738772][  T191]  notifier_call_chain (kernel/notifier.c:85)
[   39.738893][  T191]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[   39.739011][  T191]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[   39.739166][  T191] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   39.739287][  T191]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   39.739411][  T191]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   39.739533][  T191]  ? update_socket_protocol+0x10/0x10
[   39.739652][  T191]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.739772][  T191]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   39.739891][  T191]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   39.740008][  T191]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   39.740131][  T191]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   39.740250][  T191]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   39.740434][  T191] RIP: 0033:0x47cc8d
[   39.740527][  T191] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   39.740948][  T191] RSP: 002b:00007ffd014f4fe0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   39.741131][  T191] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   39.741305][  T191] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   39.741488][  T191] RBP: 00007ffd014f5030 R08: 0000000000000021 R09: 00000000351d2450
[   39.741663][  T191] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffd014f54f8
[   39.741838][  T191] R13: 00007ffd014f5538 R14: 0000000000000002 R15: 0000000000543540
| [   39.743463][  T191] ------------[ cut here ]------------
| [   39.743585][  T191] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/191
| [   39.743843][  T191] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   39.744319][  T191] Tainted: [W]=WARN
[   39.744417][  T191] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   39.744573][  T191] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   39.744734][  T191] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   39.745180][  T191] RSP: 0018:ffa0000000827910 EFLAGS: 00010286
[   39.745337][  T191] RAX: 00000000ffffffa6 RBX: ff1100000b15e3c0 RCX: 1ff4000000104ee8
[   39.745530][  T191] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b15e47c
[   39.745717][  T191] RBP: ff1100000a924000 R08: 1fe220000162bc91 R09: ff11000004db8b68
[   39.745903][  T191] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000001
[   39.746090][  T191] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000000010d1
[   39.746276][  T191] FS:  00000000351d1400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   39.746501][  T191] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.746657][  T191] CR2: 00007fa56f28b000 CR3: 000000000c7fc006 CR4: 0000000000771ef0
[   39.746842][  T191] PKRU: 55555554
[   39.746935][  T191] Call Trace:
[   39.747028][  T191]  <TASK>
[   39.747096][  T191]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   39.747222][  T191]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   39.747321][  T191]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   39.747449][  T191]  __dev_notify_flags (net/core/dev.c:9787)
[   39.747575][  T191]  ? netif_change_name (net/core/dev.c:1495)
[   39.747699][  T191]  ? __dev_change_flags (net/core/dev.c:9752)
[   39.747824][  T191]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   39.747949][  T191]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   39.748073][  T191]  ? dev_ioctl (./include/linux/rtnetlink.h:130 net/core/dev_ioctl.c:815)
[   39.748207][  T191]  netif_change_flags (net/core/dev.c:9820)
[   39.748333][  T191]  dev_change_flags (net/core/dev_api.c:68)
[   39.748463][  T191]  dev_ifsioc (net/core/dev_ioctl.c:555)
[   39.748587][  T191]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   39.748710][  T191]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[   39.748836][  T191]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   39.748961][  T191]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   39.749089][  T191]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   39.749217][  T191]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   39.749343][  T191]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[   39.749445][  T191]  dev_ioctl (net/core/dev_ioctl.c:816)
[   39.749540][  T191]  sock_do_ioctl (net/socket.c:1327)
[   39.749666][  T191]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   39.749792][  T191]  ? ioctl_file_clone (fs/ioctl.c:244)
[   39.749918][  T191]  sock_ioctl (net/socket.c:1434)
[   39.750014][  T191]  ? br_ioctl_call (net/socket.c:1279)
[   39.750145][  T191]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   39.750273][  T191]  ? update_socket_protocol+0x10/0x10
[   39.750397][  T191]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   39.750528][  T191]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   39.750653][  T191]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   39.750779][  T191]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   39.750903][  T191]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   39.751027][  T191]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   39.751188][  T191] RIP: 0033:0x47cc8d
[   39.751286][  T191] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   39.751826][  T191] RSP: 002b:00007ffd014f4fc0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   39.752015][  T191] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   39.752201][  T191] RDX: 00007ffd014f5030 RSI: 0000000000008914 RDI: 0000000000000007
[   39.752474][  T191] RBP: 00007ffd014f5010 R08: 0000000000000021 R09: 00000000351d2450
[   39.752659][  T191] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffd014f54f8
[   39.752926][  T191] R13: 00007ffd014f5538 R14: 0000000000000002 R15: 0000000000543540
| [   49.656568][  T191] ------------[ cut here ]------------
| [   49.656779][  T191] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/191
| [   49.657045][  T191] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   49.657585][  T191] Tainted: [W]=WARN
[   49.657684][  T191] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   49.657850][  T191] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   49.658023][  T191] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   49.659093][  T191] RSP: 0018:ffa00000008276e8 EFLAGS: 00010286
[   49.659264][  T191] RAX: 00000000ffffffa6 RBX: ff1100000dbb0740 RCX: 1ff4000000104ea3
[   49.659538][  T191] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000dbb07fc
[   49.659731][  T191] RBP: ff1100000a924000 R08: 1fe2200001b76101 R09: ff11000004db8b68
[   49.659928][  T191] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000041
[   49.660126][  T191] R13: 0000000000000000 R14: 0000000000000000 R15: ffa0000000827780
[   49.660322][  T191] FS:  0000000000000000(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   49.660622][  T191] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.660789][  T191] CR2: 00007fa56f28b000 CR3: 000000002af39001 CR4: 0000000000771ef0
[   49.660987][  T191] PKRU: 55555554
[   49.661086][  T191] Call Trace:
[   49.661189][  T191]  <TASK>
[   49.661257][  T191]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   49.661392][  T191]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   49.661581][  T191]  netif_close_many (net/core/dev.c:1804)
[   49.661712][  T191]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   49.661844][  T191]  ? __dev_close_many (net/core/dev.c:1781)
[   49.661973][  T191]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[   49.662136][  T191]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   49.662301][  T191]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[   49.662512][  T191]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   49.662680][  T191]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   49.662815][  T191]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   49.662946][  T191]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   49.663076][  T191]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   49.663213][  T191]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   49.663347][  T191]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   49.663543][  T191]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   49.663679][  T191]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   49.663816][  T191] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   49.663952][  T191] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   49.664083][  T191]  __fput (fs/file_table.c:510)
[   49.664189][  T191]  task_work_run (kernel/task_work.c:233)
[   49.664319][  T191]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   49.664534][  T191]  ? task_work_cancel (kernel/task_work.c:190)
[   49.664673][  T191]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   49.664805][  T191]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   49.664905][  T191]  ? exit_notify (kernel/exit.c:748)
[   49.665034][  T191]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   49.665167][  T191]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   49.665295][  T191]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   49.665510][  T191]  do_group_exit (kernel/exit.c:1119)
[   49.665640][  T191]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   49.665801][  T191]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   49.665929][  T191]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   49.666062][  T191]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   49.666195][  T191]  get_signal (kernel/signal.c:3037)
[   49.666330][  T191]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   49.666533][  T191]  ? __ia32_sys_getpeername (net/socket.c:2219)
[   49.666664][  T191]  ? _copy_to_user (./include/linux/instrumented.h:129 ./include/linux/uaccess.h:205 lib/usercopy.c:26)
[   49.666798][  T191]  ? ptrace_signal (./include/linux/signal.h:87)
[   49.666932][  T191]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   49.667066][  T191]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   49.667202][  T191]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   49.667334][  T191]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   49.667587][  T191]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   49.667719][  T191]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   49.667852][  T191]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   49.667983][  T191]  ? irq_exit_rcu (kernel/softirq.c:754)
[   49.668119][  T191]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   49.668283][  T191] RIP: 0033:0x4c2d9e
[   49.668387][  T191] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   49.668637][  T191] RSP: 002b:00007ffd014f4950 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   49.668836][  T191] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   49.669033][  T191] RDX: 0000000000000014 RSI: 00007ffd014f4a30 RDI: 0000000000000008
[   49.669233][  T191] RBP: 00007ffd014f4960 R08: 00007ffd014f49f0 R09: 000000000000000c
[   49.669496][  T191] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd014f54f8
[   49.669695][  T191] R13: 00007ffd014f5538 R14: 00007ffd014f4b20 R15: 0000000000543540
| [   49.680092][  T191] ------------[ cut here ]------------
| [   49.680263][  T191] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/191
| [   49.680523][  T191] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   49.681013][  T191] Tainted: [W]=WARN
[   49.681117][  T191] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   49.681278][  T191] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   49.681448][  T191] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   49.681907][  T191] RSP: 0018:ffa0000000827818 EFLAGS: 00010286
[   49.682067][  T191] RAX: 00000000ffffffa6 RBX: ff1100000dbb0c80 RCX: 1ff4000000104ec9
[   49.682263][  T191] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000dbb0d3c
[   49.682460][  T191] RBP: ff1100000a924000 R08: 1fe2200001b761a9 R09: ff11000004db8b68
[   49.682653][  T191] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   49.682843][  T191] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   49.683035][  T191] FS:  0000000000000000(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   49.683263][  T191] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.683430][  T191] CR2: 00007fa56f28b000 CR3: 000000002af39001 CR4: 0000000000771ef0
[   49.683620][  T191] PKRU: 55555554
[   49.683715][  T191] Call Trace:
[   49.683810][  T191]  <TASK>
[   49.683876][  T191]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   49.684037][  T191]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   49.684199][  T191]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   49.684325][  T191]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   49.684940][  T191]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   49.685069][  T191]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   49.685203][  T191]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   49.685331][  T191]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   49.685511][  T191]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   49.685639][  T191]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   49.685768][  T191] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   49.685901][  T191] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   49.686030][  T191]  __fput (fs/file_table.c:510)
[   49.686135][  T191]  task_work_run (kernel/task_work.c:233)
[   49.686263][  T191]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   49.686391][  T191]  ? task_work_cancel (kernel/task_work.c:190)
[   49.686606][  T191]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   49.686739][  T191]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   49.686838][  T191]  ? exit_notify (kernel/exit.c:748)
[   49.686966][  T191]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   49.687093][  T191]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   49.687227][  T191]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   49.687356][  T191]  do_group_exit (kernel/exit.c:1119)
[   49.687578][  T191]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   49.687737][  T191]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   49.687866][  T191]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   49.687993][  T191]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   49.688127][  T191]  get_signal (kernel/signal.c:3037)
[   49.688256][  T191]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   49.688386][  T191]  ? __ia32_sys_getpeername (net/socket.c:2219)
[   49.688528][  T191]  ? _copy_to_user (./include/linux/instrumented.h:129 ./include/linux/uaccess.h:205 lib/usercopy.c:26)
[   49.688656][  T191]  ? ptrace_signal (./include/linux/signal.h:87)
[   49.688786][  T191]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   49.688917][  T191]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   49.689049][  T191]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   49.689184][  T191]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   49.689343][  T191]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   49.689476][  T191]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   49.689604][  T191]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   49.689733][  T191]  ? irq_exit_rcu (kernel/softirq.c:754)
[   49.689862][  T191]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   49.690022][  T191] RIP: 0033:0x4c2d9e
[   49.690127][  T191] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   49.690291][  T191] RSP: 002b:00007ffd014f4950 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   49.690488][  T191] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   49.690680][  T191] RDX: 0000000000000014 RSI: 00007ffd014f4a30 RDI: 0000000000000008
[   49.690870][  T191] RBP: 00007ffd014f4960 R08: 00007ffd014f49f0 R09: 000000000000000c
[   49.691061][  T191] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd014f54f8
[   49.691259][  T191] R13: 00007ffd014f5538 R14: 00007ffd014f4b20 R15: 0000000000543540
| [   49.706250][   T12] ------------[ cut here ]------------
| [   49.706393][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: 0/12
| [   49.706648][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   49.707134][   T12] Tainted: [W]=WARN
[   49.707224][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   49.707374][   T12] Workqueue: netns cleanup_net
[   49.707507][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   49.707662][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   49.708086][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   49.708237][   T12] RAX: 00000000ffffffa6 RBX: ff1100000d9e5540 RCX: 1ff4000000018ed5
[   49.708422][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000d9e55fc
[   49.708596][   T12] RBP: ff1100000ab89000 R08: 1fe2200001b3cac1 R09: ff11000001afd260
[   49.708769][   T12] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[   49.708943][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   49.709125][   T12] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[   49.709331][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.709488][   T12] CR2: 00007fb4eb41c2a0 CR3: 000000002af39001 CR4: 0000000000771ef0
[   49.709663][   T12] PKRU: 55555554
[   49.709751][   T12] Call Trace:
[   49.709840][   T12]  <TASK>
[   49.709902][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   49.710054][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   49.710215][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   49.710338][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   49.710465][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[   49.710583][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   49.710707][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   49.710826][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   49.710945][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   49.711066][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   49.711192][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   49.711310][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   49.711436][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   49.711555][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   49.711673][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   49.711794][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   49.711912][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   49.712033][   T12]  process_one_work (kernel/workqueue.c:3314)
[   49.712159][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   49.712277][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   49.712406][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   49.712528][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   49.712649][   T12]  kthread (kernel/kthread.c:436)
[   49.712739][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   49.712885][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   49.713004][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   49.713126][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   49.713277][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   49.713394][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   49.713520][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   49.754431][  T194] ------------[ cut here ]------------
| [   49.754632][  T194] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: unshare/194
| [   49.754938][  T194] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   49.755562][  T194] Tainted: [W]=WARN
[   49.755708][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   49.755915][  T194] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   49.756140][  T194] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   49.756664][  T194] RSP: 0018:ffa0000000867ab0 EFLAGS: 00010286
[   49.756875][  T194] RAX: 00000000ffffffa6 RBX: ff1100000d9c03c0 RCX: 1ff400000010cf1c
[   49.757121][  T194] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000d9c047c
[   49.757362][  T194] RBP: ff1100000a1d1000 R08: 1fe2200001b38091 R09: ff11000005e75210
[   49.757613][  T194] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   49.757866][  T194] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000a1d1000
[   49.758108][  T194] FS:  00007fdf08b4e740(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   49.758391][  T194] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.758615][  T194] CR2: 00007fdf08d10280 CR3: 0000000004c81001 CR4: 0000000000771ef0
[   49.758860][  T194] PKRU: 55555554
[   49.759004][  T194] Call Trace:
[   49.759155][  T194]  <TASK>
[   49.759269][  T194]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   49.759458][  T194]  ? notifier_call_chain (kernel/notifier.c:85)
[   49.759638][  T194]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   49.759785][  T194]  register_netdevice (net/core/dev.c:11488)
[   49.759962][  T194]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   49.760184][  T194]  register_netdev (net/core/dev.c:11552)
[   49.760361][  T194]  loopback_net_init (drivers/net/loopback.c:218)
[   49.760552][  T194]  ops_init (net/core/net_namespace.c:137)
[   49.760700][  T194]  setup_net (net/core/net_namespace.c:446)
[   49.760845][  T194]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   49.761020][  T194]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   49.761206][  T194]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   49.761389][  T194]  copy_net_ns (net/core/net_namespace.c:579)
[   49.761579][  T194]  create_new_namespaces (kernel/nsproxy.c:132)
[   49.761759][  T194]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   49.761936][  T194]  ksys_unshare (kernel/fork.c:3243)
[   49.762123][  T194]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   49.762305][  T194]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   49.762493][  T194]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   49.762673][  T194]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   49.762850][  T194]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   49.763025][  T194]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   49.763211][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   49.763430][  T194] RIP: 0033:0x7fdf08c49bcb
[   49.763612][  T194] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   49.764123][  T194] RSP: 002b:00007ffd1e9832f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   49.764365][  T194] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdf08c49bcb
[   49.764613][  T194] RDX: 0000000000000000 RSI: 00007ffd1e983060 RDI: 0000000040000000
[   49.764850][  T194] RBP: 00007ffd1e983680 R08: 00007ffd1e983250 R09: 0000000000000000
[   49.765091][  T194] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   49.765337][  T194] R13: 0000000000000000 R14: 00000000ffffffff R15: 00005644fb9c3b68
| [   49.775620][  T194] ------------[ cut here ]------------
| [   49.775790][  T194] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/194
| [   49.776077][  T194] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   49.776663][  T194] Tainted: [W]=WARN
[   49.776803][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   49.777003][  T194] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   49.777219][  T194] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   49.777711][  T194] RSP: 0018:ffa0000000867b58 EFLAGS: 00010286
[   49.777910][  T194] RAX: 00000000ffffffa6 RBX: ff1100000d9c0e40 RCX: 1ff400000010cf31
[   49.778146][  T194] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000d9c0efc
[   49.778378][  T194] RBP: ff11000001e84000 R08: 1fe2200001b381e1 R09: ff11000005e751e8
[   49.778617][  T194] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   49.778846][  T194] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000001e84000
[   49.779074][  T194] FS:  000000003b13d400(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   49.779345][  T194] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.779557][  T194] CR2: 00007f0ca8075000 CR3: 000000000b3f8002 CR4: 0000000000771ef0
[   49.779786][  T194] PKRU: 55555554
[   49.779923][  T194] Call Trace:
[   49.780062][  T194]  <TASK>
[   49.780182][  T194]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   49.780355][  T194]  ? notifier_call_chain (kernel/notifier.c:85)
[   49.780542][  T194]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   49.780683][  T194]  register_netdevice (net/core/dev.c:11488)
[   49.780852][  T194]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   49.781051][  T194]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   49.781232][  T194] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[   49.781448][  T194]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[   49.781650][  T194]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[   49.781822][  T194] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[   49.781991][  T194]  ? build_open_flags (fs/open.c:1212)
[   49.782173][  T194]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   49.782342][  T194]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   49.782528][  T194]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   49.782699][  T194]  ? fput_close_sync (fs/file_table.c:615)
[   49.782869][  T194]  ? __ia32_sys_open (fs/open.c:1374)
[   49.783043][  T194]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   49.783221][  T194]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   49.783390][  T194]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   49.783570][  T194]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   49.783739][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   49.783938][  T194] RIP: 0033:0x47cc8d
[   49.784082][  T194] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   49.784585][  T194] RSP: 002b:00007ffe96c5f760 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   49.784817][  T194] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   49.785047][  T194] RDX: 00007ffe96c5f7e0 RSI: 00000000400454ca RDI: 0000000000000006
[   49.785287][  T194] RBP: 00007ffe96c5f7b0 R08: 0000000000000000 R09: 0000000000000000
[   49.785530][  T194] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe96c5fcb8
[   49.785760][  T194] R13: 00007ffe96c5fcf8 R14: 0000000000000002 R15: 0000000000543540
| [   49.789039][  T194] ------------[ cut here ]------------
| [   49.789210][  T194] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/194
| [   49.789505][  T194] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   49.790056][  T194] Tainted: [W]=WARN
[   49.790201][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   49.790398][  T194] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   49.790613][  T194] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   49.791085][  T194] RSP: 0018:ffa0000000867c58 EFLAGS: 00010286
[   49.791292][  T194] RAX: 00000000ffffffa6 RBX: ff1100000d9c0c80 RCX: 1ff400000010cf51
[   49.791528][  T194] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000d9c0d3c
[   49.791754][  T194] RBP: ff11000001e84000 R08: 1fe2200001b381a9 R09: ff11000005e751e8
[   49.791977][  T194] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000000
[   49.792210][  T194] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000002
[   49.792447][  T194] FS:  000000003b13d400(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   49.792708][  T194] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.792904][  T194] CR2: 00007f0ca8075000 CR3: 000000000b3f8002 CR4: 0000000000771ef0
[   49.793137][  T194] PKRU: 55555554
[   49.793273][  T194] Call Trace:
[   49.793422][  T194]  <TASK>
[   49.793529][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   49.793696][  T194]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   49.793864][  T194]  notifier_call_chain (kernel/notifier.c:85)
[   49.794040][  T194]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[   49.794216][  T194]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[   49.794425][  T194] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   49.794596][  T194]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   49.794764][  T194]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   49.794933][  T194]  ? update_socket_protocol+0x10/0x10
[   49.795098][  T194]  ? alloc_file_clone (fs/file_table.c:477)
[   49.795279][  T194]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   49.795461][  T194]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   49.795627][  T194]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   49.795792][  T194]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   49.795960][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   49.796159][  T194] RIP: 0033:0x47cc8d
[   49.796301][  T194] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   49.796780][  T194] RSP: 002b:00007ffe96c5f7a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   49.797006][  T194] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   49.797239][  T194] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   49.797479][  T194] RBP: 00007ffe96c5f7f0 R08: 0000000000000005 R09: 0000000000001ff0
[   49.797703][  T194] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffe96c5fcb8
[   49.797927][  T194] R13: 00007ffe96c5fcf8 R14: 0000000000000002 R15: 0000000000543540
| [   49.800005][  T194] ------------[ cut here ]------------
| [   49.800177][  T194] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/194
| [   49.800481][  T194] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   49.801053][  T194] Tainted: [W]=WARN
[   49.801201][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   49.801415][  T194] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   49.801625][  T194] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   49.802122][  T194] RSP: 0018:ffa0000000867850 EFLAGS: 00010286
[   49.802329][  T194] RAX: 00000000ffffffa6 RBX: ff1100000d9c1000 RCX: 1ff400000010ced0
[   49.802573][  T194] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000d9c10bc
[   49.802806][  T194] RBP: ff11000001e84000 R08: 1fe2200001b38219 R09: ff11000005e751e8
[   49.803042][  T194] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000001
[   49.803279][  T194] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000005881a80
[   49.803525][  T194] FS:  000000003b13d400(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   49.803791][  T194] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.803999][  T194] CR2: 00007f0ca8075000 CR3: 000000000b3f8002 CR4: 0000000000771ef0
[   49.804241][  T194] PKRU: 55555554
[   49.804382][  T194] Call Trace:
[   49.804534][  T194]  <TASK>
[   49.804646][  T194]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   49.804819][  T194]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   49.804963][  T194]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   49.805149][  T194]  __dev_notify_flags (net/core/dev.c:9787)
[   49.805322][  T194]  ? netif_change_name (net/core/dev.c:1495)
[   49.805505][  T194]  ? __dev_change_flags (net/core/dev.c:9752)
[   49.805677][  T194]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   49.805850][  T194]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   49.806023][  T194]  netif_change_flags (net/core/dev.c:9820)
[   49.806205][  T194]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   49.806387][  T194]  dev_change_flags (net/core/dev_api.c:68)
[   49.806572][  T194]  devinet_ioctl (net/ipv4/devinet.c:1199)
[   49.806748][  T194]  ? inet_ifa_byprefix (net/ipv4/devinet.c:619 (discriminator 9))
[   49.806920][  T194]  ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18)
[   49.807098][  T194]  inet_ioctl (net/ipv4/af_inet.c:1011)
[   49.807248][  T194]  ? inet_dgram_connect (net/ipv4/af_inet.c:589)
[   49.807432][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   49.807612][  T194]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   49.807790][  T194]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   49.807963][  T194]  sock_do_ioctl (net/socket.c:1313)
[   49.808144][  T194]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   49.808319][  T194]  ? ioctl_file_clone (fs/ioctl.c:244)
[   49.808507][  T194]  sock_ioctl (net/socket.c:1434)
[   49.808649][  T194]  ? br_ioctl_call (net/socket.c:1279)
[   49.808823][  T194]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   49.808998][  T194]  ? update_socket_protocol+0x10/0x10
[   49.809181][  T194]  ? alloc_file_clone (fs/file_table.c:477)
[   49.809357][  T194]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   49.809543][  T194]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   49.809716][  T194]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   49.809887][  T194]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   49.810061][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   49.810269][  T194] RIP: 0033:0x47cc8d
[   49.810427][  T194] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   49.810920][  T194] RSP: 002b:00007ffe96c5f780 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   49.811166][  T194] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   49.811415][  T194] RDX: 00007ffe96c5f7f0 RSI: 0000000000008914 RDI: 0000000000000007
[   49.811647][  T194] RBP: 00007ffe96c5f7d0 R08: 0000000000000005 R09: 0000000000001ff0
[   49.811880][  T194] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffe96c5fcb8
[   49.812120][  T194] R13: 00007ffe96c5fcf8 R14: 0000000000000002 R15: 0000000000543540
| [   59.734200][  T194] ------------[ cut here ]------------
| [   59.735104][  T194] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/194
| [   59.735577][  T194] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   59.736366][  T194] Tainted: [W]=WARN
[   59.736622][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   59.736928][  T194] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   59.737191][  T194] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   59.737740][  T194] RSP: 0018:ffa00000008676e8 EFLAGS: 00010286
[   59.737966][  T194] RAX: 00000000ffffffa6 RBX: ff1100000b286ac0 RCX: 1ff400000010cea3
[   59.738226][  T194] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b286b7c
[   59.738486][  T194] RBP: ff11000001e84000 R08: 1fe2200001650d71 R09: ff11000005e751e8
[   59.738739][  T194] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000041
[   59.738994][  T194] R13: 0000000000000000 R14: 0000000000000000 R15: ffa0000000867780
[   59.739256][  T194] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   59.739557][  T194] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.739777][  T194] CR2: 00007f0ca8075000 CR3: 000000002af39003 CR4: 0000000000771ef0
[   59.740031][  T194] PKRU: 55555554
[   59.740191][  T194] Call Trace:
[   59.740341][  T194]  <TASK>
[   59.740475][  T194]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   59.740662][  T194]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   59.740815][  T194]  netif_close_many (net/core/dev.c:1804)
[   59.740998][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.741191][  T194]  ? __dev_close_many (net/core/dev.c:1781)
[   59.741375][  T194]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[   59.741603][  T194]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   59.741824][  T194]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[   59.742007][  T194]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   59.742230][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.742427][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.742610][  T194]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   59.742794][  T194]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   59.742981][  T194]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   59.743173][  T194]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   59.743359][  T194]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   59.743555][  T194]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   59.743740][  T194] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   59.743931][  T194] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   59.744117][  T194]  __fput (fs/file_table.c:510)
[   59.744281][  T194]  task_work_run (kernel/task_work.c:233)
[   59.744486][  T194]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   59.744672][  T194]  ? task_work_cancel (kernel/task_work.c:190)
[   59.744856][  T194]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   59.745041][  T194]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   59.745202][  T194]  ? exit_notify (kernel/exit.c:748)
[   59.745387][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.745587][  T194]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   59.745769][  T194]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   59.745956][  T194]  do_group_exit (kernel/exit.c:1119)
[   59.746138][  T194]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   59.746360][  T194]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   59.746555][  T194]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   59.746739][  T194]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   59.746922][  T194]  get_signal (kernel/signal.c:3037)
[   59.747108][  T194]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   59.747295][  T194]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   59.747487][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   59.747670][  T194]  ? ptrace_signal (./include/linux/signal.h:87)
[   59.747854][  T194]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   59.748036][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.748227][  T194]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   59.748426][  T194]  ? fd_install (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:960 (discriminator 2) fs/file.c:699 (discriminator 2))
[   59.748610][  T194]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   59.748795][  T194]  ? update_socket_protocol+0x10/0x10
[   59.748980][  T194]  ? alloc_file_clone (fs/file_table.c:477)
[   59.749171][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.749358][  T194]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   59.749589][  T194]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   59.749774][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.749960][  T194]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   59.750152][  T194]  ? irq_exit_rcu (kernel/softirq.c:754)
[   59.750337][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   59.750567][  T194] RIP: 0033:0x47ea2b
[   59.750723][  T194] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   59.750942][  T194] RSP: 002b:00007ffe96c5f208 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[   59.751201][  T194] RAX: 0000000000000008 RBX: 00007ffe96c5f2e0 RCX: 000000000047ea2b
[   59.751464][  T194] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   59.751713][  T194] RBP: 00007ffe96c5f240 R08: 0000000000000041 R09: 000000003b13e450
[   59.751962][  T194] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffe96c5fcb8
[   59.752217][  T194] R13: 00007ffe96c5fcf8 R14: 00007ffe96c5f7b8 R15: 0000000000543540
| [   59.763106][  T194] ------------[ cut here ]------------
| [   59.763307][  T194] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/194
| [   59.763630][  T194] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   59.764221][  T194] Tainted: [W]=WARN
[   59.764367][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   59.764583][  T194] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   59.764799][  T194] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   59.765315][  T194] RSP: 0018:ffa0000000867818 EFLAGS: 00010286
[   59.765536][  T194] RAX: 00000000ffffffa6 RBX: ff1100000b2863c0 RCX: 1ff400000010cec9
[   59.765780][  T194] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b28647c
[   59.766021][  T194] RBP: ff11000001e84000 R08: 1fe2200001650c91 R09: ff11000005e751e8
[   59.766270][  T194] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   59.766516][  T194] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   59.766761][  T194] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   59.767038][  T194] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.767255][  T194] CR2: 00007f0ca8075000 CR3: 000000002af39003 CR4: 0000000000771ef0
[   59.767509][  T194] PKRU: 55555554
[   59.767653][  T194] Call Trace:
[   59.767799][  T194]  <TASK>
[   59.767913][  T194]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   59.768125][  T194]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   59.768341][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.768530][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.768706][  T194]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   59.768884][  T194]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   59.769063][  T194]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   59.769252][  T194]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   59.769440][  T194]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   59.769616][  T194]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   59.769797][  T194] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   59.769979][  T194] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   59.770165][  T194]  __fput (fs/file_table.c:510)
[   59.770318][  T194]  task_work_run (kernel/task_work.c:233)
[   59.770504][  T194]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   59.770681][  T194]  ? task_work_cancel (kernel/task_work.c:190)
[   59.770858][  T194]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   59.771037][  T194]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   59.771191][  T194]  ? exit_notify (kernel/exit.c:748)
[   59.771367][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.771554][  T194]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   59.771734][  T194]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   59.771912][  T194]  do_group_exit (kernel/exit.c:1119)
[   59.772088][  T194]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   59.772302][  T194]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   59.772490][  T194]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   59.772667][  T194]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   59.772844][  T194]  get_signal (kernel/signal.c:3037)
[   59.773023][  T194]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   59.773207][  T194]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   59.773384][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   59.773574][  T194]  ? ptrace_signal (./include/linux/signal.h:87)
[   59.773754][  T194]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   59.773928][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.774106][  T194]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   59.774290][  T194]  ? fd_install (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:960 (discriminator 2) fs/file.c:699 (discriminator 2))
[   59.774480][  T194]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   59.774660][  T194]  ? update_socket_protocol+0x10/0x10
[   59.774835][  T194]  ? alloc_file_clone (fs/file_table.c:477)
[   59.775010][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.775191][  T194]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   59.775411][  T194]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   59.775592][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.775769][  T194]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   59.775945][  T194]  ? irq_exit_rcu (kernel/softirq.c:754)
[   59.776122][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   59.776337][  T194] RIP: 0033:0x47ea2b
[   59.776498][  T194] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   59.776711][  T194] RSP: 002b:00007ffe96c5f208 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[   59.776953][  T194] RAX: 0000000000000008 RBX: 00007ffe96c5f2e0 RCX: 000000000047ea2b
[   59.777197][  T194] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   59.777450][  T194] RBP: 00007ffe96c5f240 R08: 0000000000000041 R09: 000000003b13e450
[   59.777689][  T194] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffe96c5fcb8
[   59.777929][  T194] R13: 00007ffe96c5fcf8 R14: 00007ffe96c5f7b8 R15: 0000000000543540
| [   59.792288][   T12] ------------[ cut here ]------------
| [   59.792453][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: 0/12
| [   59.792702][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   59.793168][   T12] Tainted: [W]=WARN
[   59.793260][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   59.793421][   T12] Workqueue: netns cleanup_net
[   59.793548][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   59.793703][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   59.794130][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   59.794286][   T12] RAX: 00000000ffffffa6 RBX: ff1100000a821380 RCX: 1ff4000000018ed5
[   59.794471][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000a82143c
[   59.794662][   T12] RBP: ff1100000a1d1000 R08: 1fe2200001504289 R09: ff11000001afd260
[   59.794845][   T12] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[   59.795037][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   59.795236][   T12] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[   59.795459][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.795607][   T12] CR2: 00007fb4eb41c2a0 CR3: 000000000f4de002 CR4: 0000000000771ef0
[   59.795797][   T12] PKRU: 55555554
[   59.795886][   T12] Call Trace:
[   59.795977][   T12]  <TASK>
[   59.796039][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   59.796201][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   59.796363][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   59.796490][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   59.796607][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[   59.796724][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   59.796853][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   59.796980][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   59.797105][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   59.797243][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   59.797365][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   59.797490][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   59.797619][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   59.797743][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   59.797866][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   59.797985][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   59.798107][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.798233][   T12]  process_one_work (kernel/workqueue.c:3314)
[   59.798354][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   59.798478][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   59.798609][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   59.798737][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   59.798854][   T12]  kthread (kernel/kthread.c:436)
[   59.798944][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   59.799090][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   59.799214][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   59.799342][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   59.799495][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   59.799613][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   59.799736][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   59.836596][  T197] ------------[ cut here ]------------
| [   59.836757][  T197] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: unshare/197
| [   59.837024][  T197] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   59.837517][  T197] Tainted: [W]=WARN
[   59.837618][  T197] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   59.837785][  T197] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   59.837960][  T197] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   59.838447][  T197] RSP: 0018:ffa0000000657ab0 EFLAGS: 00010286
[   59.838613][  T197] RAX: 00000000ffffffa6 RBX: ff1100000b17f540 RCX: 1ff40000000caf1c
[   59.838810][  T197] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b17f5fc
[   59.839010][  T197] RBP: ff110000055e4000 R08: 1fe220000162fec1 R09: ff1100000a2a2ed0
[   59.839215][  T197] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[   59.839415][  T197] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000055e4000
[   59.839616][  T197] FS:  00007f2e712e3740(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[   59.839852][  T197] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.840018][  T197] CR2: 000055fadcf9d008 CR3: 000000000b3f8003 CR4: 0000000000771ef0
[   59.840223][  T197] PKRU: 55555554
[   59.840323][  T197] Call Trace:
[   59.840428][  T197]  <TASK>
[   59.840497][  T197]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   59.840631][  T197]  ? notifier_call_chain (kernel/notifier.c:85)
[   59.840767][  T197]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   59.840868][  T197]  register_netdevice (net/core/dev.c:11488)
[   59.841004][  T197]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   59.841179][  T197]  register_netdev (net/core/dev.c:11552)
[   59.841313][  T197]  loopback_net_init (drivers/net/loopback.c:218)
[   59.841453][  T197]  ops_init (net/core/net_namespace.c:137)
[   59.841557][  T197]  setup_net (net/core/net_namespace.c:446)
[   59.841658][  T197]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   59.841791][  T197]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   59.841925][  T197]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   59.842060][  T197]  copy_net_ns (net/core/net_namespace.c:579)
[   59.842199][  T197]  create_new_namespaces (kernel/nsproxy.c:132)
[   59.842337][  T197]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   59.842476][  T197]  ksys_unshare (kernel/fork.c:3243)
[   59.842609][  T197]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   59.842749][  T197]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   59.842883][  T197]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   59.843016][  T197]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   59.843153][  T197]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   59.843285][  T197]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   59.843424][  T197]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   59.843588][  T197] RIP: 0033:0x7f2e713debcb
[   59.843730][  T197] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   59.844232][  T197] RSP: 002b:00007fffc0420348 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   59.844436][  T197] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2e713debcb
[   59.844636][  T197] RDX: 0000000000000000 RSI: 00007fffc04200b0 RDI: 0000000040000000
[   59.844834][  T197] RBP: 00007fffc04206d0 R08: 00007fffc04202a0 R09: 0000000000000000
[   59.845031][  T197] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   59.845235][  T197] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055fac7e85b68
| [   59.853870][  T197] ------------[ cut here ]------------
| [   59.854019][  T197] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/197
| [   59.854278][  T197] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   59.854768][  T197] Tainted: [W]=WARN
[   59.854864][  T197] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   59.855023][  T197] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   59.855196][  T197] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   59.855655][  T197] RSP: 0018:ffa0000000657b58 EFLAGS: 00010286
[   59.855814][  T197] RAX: 00000000ffffffa6 RBX: ff1100000b17e3c0 RCX: 1ff40000000caf31
[   59.856006][  T197] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b17e47c
[   59.856201][  T197] RBP: ff11000009bb8000 R08: 1fe220000162fc91 R09: ff1100000a2a2ea8
[   59.856389][  T197] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   59.856584][  T197] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000009bb8000
[   59.856774][  T197] FS:  000000000cedf400(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   59.856995][  T197] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.857158][  T197] CR2: 00007fb1178f4000 CR3: 000000000c06e005 CR4: 0000000000771ef0
[   59.857348][  T197] PKRU: 55555554
[   59.857448][  T197] Call Trace:
[   59.857542][  T197]  <TASK>
[   59.857607][  T197]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   59.857737][  T197]  ? notifier_call_chain (kernel/notifier.c:85)
[   59.857864][  T197]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   59.857962][  T197]  register_netdevice (net/core/dev.c:11488)
[   59.858090][  T197]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   59.858249][  T197]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   59.858377][  T197] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[   59.858544][  T197]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[   59.858703][  T197]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[   59.858833][  T197] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[   59.858961][  T197]  ? build_open_flags (fs/open.c:1212)
[   59.859089][  T197]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   59.859232][  T197]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   59.859361][  T197]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   59.859495][  T197]  ? fput_close_sync (fs/file_table.c:615)
[   59.859621][  T197]  ? __ia32_sys_open (fs/open.c:1374)
[   59.859748][  T197]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   59.859896][  T197]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   59.860078][  T197]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   59.860256][  T197]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   59.860385][  T197]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   59.860550][  T197] RIP: 0033:0x47cc8d
[   59.860653][  T197] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   59.861101][  T197] RSP: 002b:00007fff4c35a8e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   59.861357][  T197] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   59.861556][  T197] RDX: 00007fff4c35a960 RSI: 00000000400454ca RDI: 0000000000000006
[   59.861744][  T197] RBP: 00007fff4c35a930 R08: 0000000000000000 R09: 0000000000000000
[   59.861931][  T197] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff4c35ae38
[   59.862119][  T197] R13: 00007fff4c35ae78 R14: 0000000000000002 R15: 0000000000543540
| [   59.882869][  T198] ------------[ cut here ]------------
| [   59.883019][  T198] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: ifconfig/198
| [   59.883278][  T198] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   59.884291][  T198] Tainted: [W]=WARN
[   59.884387][  T198] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   59.884580][  T198] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   59.884745][  T198] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   59.885203][  T198] RSP: 0018:ffa0000000827850 EFLAGS: 00010286
[   59.885362][  T198] RAX: 00000000ffffffa6 RBX: ff1100000b17f1c0 RCX: 1ff4000000104ed0
[   59.885557][  T198] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b17f27c
[   59.885747][  T198] RBP: ff11000009bb8000 R08: 1fe220000162fe51 R09: ff1100000c3cd1e8
[   59.885939][  T198] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
[   59.886131][  T198] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
[   59.886325][  T198] FS:  00007ff5ea23d740(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[   59.886555][  T198] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.886715][  T198] CR2: 00005654b06e85fa CR3: 000000000d842001 CR4: 0000000000771ef0
[   59.886908][  T198] PKRU: 55555554
[   59.887005][  T198] Call Trace:
[   59.887101][  T198]  <TASK>
[   59.887170][  T198]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.887298][  T198]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   59.887434][  T198]  notifier_call_chain (kernel/notifier.c:85)
[   59.887565][  T198]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[   59.887694][  T198]  ? dev_validate_mtu (net/core/dev.c:9842 (discriminator 2))
[   59.887823][  T198]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   59.887953][  T198]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   59.888083][  T198]  netif_set_mtu (net/core/dev.c:9910)
[   59.888216][  T198]  ? netif_set_mtu_ext (net/core/dev.c:9847 (discriminator 2))
[   59.888350][  T198]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   59.888483][  T198]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.888611][  T198]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.888738][  T198]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[   59.888868][  T198]  dev_set_mtu (net/core/dev_api.c:249)
[   59.888965][  T198]  dev_ifsioc (net/core/dev_ioctl.c:562)
[   59.889093][  T198]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   59.889224][  T198]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[   59.889350][  T198]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   59.889483][  T198]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   59.889609][  T198]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.889739][  T198]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   59.889868][  T198]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[   59.889966][  T198]  dev_ioctl (net/core/dev_ioctl.c:816)
[   59.890064][  T198]  sock_do_ioctl (net/socket.c:1327)
[   59.890196][  T198]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 6))
[   59.890324][  T198]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   59.890458][  T198]  ? __handle_mm_fault (mm/memory.c:6443 mm/memory.c:6565)
[   59.890587][  T198]  ? ioctl_file_clone (fs/ioctl.c:244)
[   59.890718][  T198]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   59.890847][  T198]  sock_ioctl (net/socket.c:1434)
[   59.890945][  T198]  ? br_ioctl_call (net/socket.c:1279)
[   59.891075][  T198]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.891208][  T198]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   59.891335][  T198]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   59.891488][  T198]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   59.891618][  T198]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   59.891747][  T198]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   59.891875][  T198]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   59.892004][  T198]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   59.892169][  T198] RIP: 0033:0x7ff5ea3335fd
[   59.892302][  T198] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   59.892762][  T198] RSP: 002b:00007fff61e7b410 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   59.892952][  T198] RAX: ffffffffffffffda RBX: 00007fff61e7d81d RCX: 00007ff5ea3335fd
[   59.893146][  T198] RDX: 00007fff61e7b4c0 RSI: 0000000000008922 RDI: 0000000000000008
[   59.893336][  T198] RBP: 00007fff61e7b460 R08: 0000000000000000 R09: 00007fff61e7d821
[   59.893533][  T198] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff61e7b7f8
[   59.893723][  T198] R13: 0000000000000004 R14: 00007ff5ea481000 R15: 00005654b06e6918
| [   59.897490][  T197] ------------[ cut here ]------------
| [   59.897629][  T197] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/197
| [   59.897871][  T197] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   59.898350][  T197] Tainted: [W]=WARN
[   59.898447][  T197] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   59.898601][  T197] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   59.898760][  T197] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   59.899202][  T197] RSP: 0018:ffa0000000657c58 EFLAGS: 00010286
[   59.899356][  T197] RAX: 00000000ffffffa6 RBX: ff1100000b17ee40 RCX: 1ff40000000caf51
[   59.899545][  T197] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b17eefc
[   59.899729][  T197] RBP: ff11000009bb8000 R08: 1fe220000162fde1 R09: ff1100000a2a2ea8
[   59.899913][  T197] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
[   59.900099][  T197] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000
[   59.900290][  T197] FS:  000000000cedf400(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   59.900511][  T197] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.900666][  T197] CR2: 00007fb1178f4000 CR3: 000000000c06e005 CR4: 0000000000771ef0
[   59.900851][  T197] PKRU: 55555554
[   59.900943][  T197] Call Trace:
[   59.901035][  T197]  <TASK>
[   59.901099][  T197]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.901228][  T197]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   59.901352][  T197]  notifier_call_chain (kernel/notifier.c:85)
[   59.901481][  T197]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[   59.901607][  T197]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[   59.901763][  T197] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   59.901891][  T197]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   59.902015][  T197]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   59.902140][  T197]  ? update_socket_protocol+0x10/0x10
[   59.902268][  T197]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.902393][  T197]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   59.902525][  T197]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   59.902648][  T197]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   59.902773][  T197]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   59.902895][  T197]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   59.903047][  T197] RIP: 0033:0x47cc8d
[   59.903148][  T197] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   59.903592][  T197] RSP: 002b:00007fff4c35a920 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   59.903776][  T197] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   59.903958][  T197] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   59.904145][  T197] RBP: 00007fff4c35a970 R08: 0000000000000021 R09: 000000000cee0450
[   59.904330][  T197] R10: 0000000000000020 R11: 0000000000000246 R12: 00007fff4c35ae38
[   59.904519][  T197] R13: 00007fff4c35ae78 R14: 0000000000000002 R15: 0000000000543540
| [   59.906188][  T197] ------------[ cut here ]------------
| [   59.906317][  T197] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/197
| [   59.906571][  T197] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   59.907060][  T197] Tainted: [W]=WARN
[   59.907161][  T197] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   59.907324][  T197] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   59.907496][  T197] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   59.907953][  T197] RSP: 0018:ffa0000000657910 EFLAGS: 00010286
[   59.908115][  T197] RAX: 00000000ffffffa6 RBX: ff11000008c32c80 RCX: 1ff40000000caee8
[   59.908311][  T197] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008c32d3c
[   59.908508][  T197] RBP: ff11000009bb8000 R08: 1fe22000011865a9 R09: ff1100000a2a2ea8
[   59.908702][  T197] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
[   59.908896][  T197] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000000010d1
[   59.909090][  T197] FS:  000000000cedf400(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   59.909319][  T197] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.909487][  T197] CR2: 00007fb1178f4000 CR3: 000000000c06e005 CR4: 0000000000771ef0
[   59.909680][  T197] PKRU: 55555554
[   59.909776][  T197] Call Trace:
[   59.909872][  T197]  <TASK>
[   59.909938][  T197]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   59.910069][  T197]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   59.910171][  T197]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   59.910300][  T197]  __dev_notify_flags (net/core/dev.c:9787)
[   59.910438][  T197]  ? netif_change_name (net/core/dev.c:1495)
[   59.910567][  T197]  ? __dev_change_flags (net/core/dev.c:9752)
[   59.910695][  T197]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   59.910825][  T197]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   59.910953][  T197]  ? dev_ioctl (./include/linux/rtnetlink.h:130 net/core/dev_ioctl.c:815)
[   59.911083][  T197]  netif_change_flags (net/core/dev.c:9820)
[   59.911217][  T197]  dev_change_flags (net/core/dev_api.c:68)
[   59.911348][  T197]  dev_ifsioc (net/core/dev_ioctl.c:555)
[   59.911480][  T197]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   59.911609][  T197]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[   59.911738][  T197]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   59.911869][  T197]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   59.911996][  T197]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   59.912127][  T197]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   59.912262][  T197]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[   59.912363][  T197]  dev_ioctl (net/core/dev_ioctl.c:816)
[   59.912466][  T197]  sock_do_ioctl (net/socket.c:1327)
[   59.912599][  T197]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   59.912734][  T197]  ? ioctl_file_clone (fs/ioctl.c:244)
[   59.912865][  T197]  sock_ioctl (net/socket.c:1434)
[   59.912963][  T197]  ? br_ioctl_call (net/socket.c:1279)
[   59.913092][  T197]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   59.913228][  T197]  ? update_socket_protocol+0x10/0x10
[   59.913358][  T197]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   59.913497][  T197]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   59.913629][  T197]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   59.913757][  T197]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   59.913885][  T197]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   59.914015][  T197]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   59.914187][  T197] RIP: 0033:0x47cc8d
[   59.914288][  T197] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   59.914749][  T197] RSP: 002b:00007fff4c35a900 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   59.914943][  T197] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   59.915134][  T197] RDX: 00007fff4c35a970 RSI: 0000000000008914 RDI: 0000000000000007
[   59.915335][  T197] RBP: 00007fff4c35a950 R08: 0000000000000021 R09: 000000000cee0450
[   59.915531][  T197] R10: 0000000000000020 R11: 0000000000000246 R12: 00007fff4c35ae38
[   59.915722][  T197] R13: 00007fff4c35ae78 R14: 0000000000000002 R15: 0000000000543540
| [   69.817805][  T197] ------------[ cut here ]------------
| [   69.818020][  T197] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/197
| [   69.818289][  T197] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   69.818802][  T197] Tainted: [W]=WARN
[   69.818902][  T197] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   69.819064][  T197] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   69.819237][  T197] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   69.819705][  T197] RSP: 0018:ffa00000006576e8 EFLAGS: 00010286
[   69.819869][  T197] RAX: 00000000ffffffa6 RBX: ff1100000dba8ac0 RCX: 1ff40000000caea3
[   69.820062][  T197] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000dba8b7c
[   69.820259][  T197] RBP: ff11000009bb8000 R08: 1fe2200001b75171 R09: ff1100000a2a2ea8
[   69.820460][  T197] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000041
[   69.820651][  T197] R13: 0000000000000000 R14: 0000000000000000 R15: ffa0000000657780
[   69.820843][  T197] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[   69.821073][  T197] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   69.821242][  T197] CR2: 00007f8ec53a26f0 CR3: 000000000d863002 CR4: 0000000000771ef0
[   69.821449][  T197] PKRU: 55555554
[   69.821546][  T197] Call Trace:
[   69.821644][  T197]  <TASK>
[   69.821712][  T197]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   69.821845][  T197]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   69.821943][  T197]  netif_close_many (net/core/dev.c:1804)
[   69.822071][  T197]  ? asym_cpu_capacity_scan (./include/linux/rculist.h:103)
[   69.822206][  T197]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   69.822333][  T197]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   69.822467][  T197]  ? __dev_close_many (net/core/dev.c:1781)
[   69.822599][  T197]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[   69.822758][  T197]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   69.822921][  T197]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[   69.823051][  T197]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   69.823211][  T197]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   69.823339][  T197]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   69.823475][  T197]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   69.823604][  T197]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   69.823734][  T197]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   69.823863][  T197]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   69.823994][  T197]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   69.824122][  T197]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   69.824258][  T197] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   69.824391][  T197] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   69.824529][  T197]  __fput (fs/file_table.c:510)
[   69.824633][  T197]  task_work_run (kernel/task_work.c:233)
[   69.824761][  T197]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   69.824890][  T197]  ? task_work_cancel (kernel/task_work.c:190)
[   69.825021][  T197]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   69.825151][  T197]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   69.825253][  T197]  ? exit_notify (kernel/exit.c:748)
[   69.825382][  T197]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   69.825537][  T197]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   69.825666][  T197]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   69.825798][  T197]  do_group_exit (kernel/exit.c:1119)
[   69.825928][  T197]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   69.826087][  T197]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   69.826220][  T197]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   69.826351][  T197]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   69.826487][  T197]  get_signal (kernel/signal.c:3037)
[   69.826618][  T197]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   69.826748][  T197]  ? __ia32_sys_getpeername (net/socket.c:2219)
[   69.826876][  T197]  ? ptrace_signal (./include/linux/signal.h:87)
[   69.827008][  T197]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   69.827139][  T197]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   69.827273][  T197]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   69.827410][  T197]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   69.827570][  T197]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   69.827698][  T197]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   69.827827][  T197]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   69.827957][  T197]  ? irq_exit_rcu (kernel/softirq.c:754)
[   69.828086][  T197]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   69.828249][  T197] RIP: 0033:0x4c2d9e
[   69.828356][  T197] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   69.828527][  T197] RSP: 002b:00007fff4c35a290 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   69.828724][  T197] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   69.828919][  T197] RDX: 0000000000000014 RSI: 00007fff4c35a370 RDI: 0000000000000008
[   69.829109][  T197] RBP: 00007fff4c35a2a0 R08: 00007fff4c35a330 R09: 000000000000000c
[   69.829301][  T197] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000cee91e0
[   69.829499][  T197] R13: 00007fff4c35ae78 R14: 00007fff4c35a460 R15: 0000000000543540
| [   69.832866][  T197] ------------[ cut here ]------------
| [   69.832994][  T197] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/197
| [   69.833241][  T197] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   69.833744][  T197] Tainted: [W]=WARN
[   69.833838][  T197] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   69.833994][  T197] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   69.834157][  T197] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   69.834608][  T197] RSP: 0018:ffa0000000657818 EFLAGS: 00010286
[   69.834764][  T197] RAX: 00000000ffffffa6 RBX: ff1100000abf0200 RCX: 1ff40000000caec9
[   69.834951][  T197] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000abf02bc
[   69.835135][  T197] RBP: ff11000009bb8000 R08: 1fe220000157e059 R09: ff1100000a2a2ea8
[   69.835323][  T197] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[   69.835514][  T197] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   69.835702][  T197] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[   69.835918][  T197] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   69.836073][  T197] CR2: 00007f8ec53a26f0 CR3: 000000000d863002 CR4: 0000000000771ef0
[   69.836268][  T197] PKRU: 55555554
[   69.836361][  T197] Call Trace:
[   69.836463][  T197]  <TASK>
[   69.836528][  T197]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   69.836688][  T197]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   69.836840][  T197]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   69.836964][  T197]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   69.837089][  T197]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   69.837220][  T197]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   69.837345][  T197]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   69.837476][  T197]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   69.837601][  T197]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   69.837725][  T197]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   69.837850][  T197] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   69.837979][  T197] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   69.838106][  T197]  __fput (fs/file_table.c:510)
[   69.838209][  T197]  task_work_run (kernel/task_work.c:233)
[   69.838335][  T197]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   69.838464][  T197]  ? task_work_cancel (kernel/task_work.c:190)
[   69.838589][  T197]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   69.838716][  T197]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   69.838811][  T197]  ? exit_notify (kernel/exit.c:748)
[   69.838934][  T197]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   69.839059][  T197]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   69.839186][  T197]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   69.839312][  T197]  do_group_exit (kernel/exit.c:1119)
[   69.839441][  T197]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   69.839597][  T197]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   69.839720][  T197]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   69.839842][  T197]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   69.839965][  T197]  get_signal (kernel/signal.c:3037)
[   69.840101][  T197]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   69.840228][  T197]  ? __ia32_sys_getpeername (net/socket.c:2219)
[   69.840353][  T197]  ? ptrace_signal (./include/linux/signal.h:87)
[   69.840483][  T197]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   69.840610][  T197]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   69.840736][  T197]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   69.840860][  T197]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   69.841015][  T197]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   69.841138][  T197]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   69.841268][  T197]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   69.841392][  T197]  ? irq_exit_rcu (kernel/softirq.c:754)
[   69.841522][  T197]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   69.841675][  T197] RIP: 0033:0x4c2d9e
[   69.841771][  T197] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   69.841931][  T197] RSP: 002b:00007fff4c35a290 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   69.842118][  T197] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   69.842306][  T197] RDX: 0000000000000014 RSI: 00007fff4c35a370 RDI: 0000000000000008
[   69.842495][  T197] RBP: 00007fff4c35a2a0 R08: 00007fff4c35a330 R09: 000000000000000c
[   69.842680][  T197] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000cee91e0
[   69.842863][  T197] R13: 00007fff4c35ae78 R14: 00007fff4c35a460 R15: 0000000000543540
| [   69.862646][   T12] ------------[ cut here ]------------
| [   69.862840][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: 0/12
| [   69.863140][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   69.863695][   T12] Tainted: [W]=WARN
[   69.863828][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   69.864034][   T12] Workqueue: netns cleanup_net
[   69.864228][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   69.864437][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   69.864904][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   69.865094][   T12] RAX: 00000000ffffffa6 RBX: ff1100000abf0e40 RCX: 1ff4000000018ed5
[   69.865334][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000abf0efc
[   69.865571][   T12] RBP: ff110000055e4000 R08: 1fe220000157e1e1 R09: ff11000001afd260
[   69.865815][   T12] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   69.866032][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   69.866260][   T12] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   69.866520][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   69.866716][   T12] CR2: 00007f8ec55e6708 CR3: 000000002af39003 CR4: 0000000000771ef0
[   69.866933][   T12] PKRU: 55555554
[   69.867063][   T12] Call Trace:
[   69.867201][   T12]  <TASK>
[   69.867307][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   69.867512][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   69.867705][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   69.867874][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   69.868037][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[   69.868204][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   69.868368][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   69.868538][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   69.868700][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   69.868865][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   69.869034][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   69.869201][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   69.869367][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   69.869540][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   69.869700][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   69.869903][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   69.870074][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   69.870247][   T12]  process_one_work (kernel/workqueue.c:3314)
[   69.870431][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   69.870620][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   69.870787][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   69.870952][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   69.871114][   T12]  kthread (kernel/kthread.c:436)
[   69.871265][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   69.871469][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   69.871634][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   69.871805][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   69.871995][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   69.872158][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   69.872329][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   69.891201][  T200] ------------[ cut here ]------------
| [   69.891350][  T200] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: unshare/200
| [   69.891612][  T200] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   69.892074][  T200] Tainted: [W]=WARN
[   69.892174][  T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   69.892336][  T200] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   69.892509][  T200] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   69.892967][  T200] RSP: 0018:ffa0000000527ab0 EFLAGS: 00010286
[   69.893128][  T200] RAX: 00000000ffffffa6 RBX: ff11000009b198c0 RCX: 1ff40000000a4f1c
[   69.893324][  T200] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000009b1997c
[   69.893523][  T200] RBP: ff110000087e1000 R08: 1fe2200001363331 R09: ff1100000c4ad210
[   69.893716][  T200] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   69.893908][  T200] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000087e1000
[   69.894100][  T200] FS:  00007f290f865740(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   69.894335][  T200] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   69.894501][  T200] CR2: 00007f290f930820 CR3: 0000000005d67005 CR4: 0000000000771ef0
[   69.894697][  T200] PKRU: 55555554
[   69.894794][  T200] Call Trace:
[   69.894889][  T200]  <TASK>
[   69.894956][  T200]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   69.895085][  T200]  ? notifier_call_chain (kernel/notifier.c:85)
[   69.895221][  T200]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   69.895321][  T200]  register_netdevice (net/core/dev.c:11488)
[   69.895458][  T200]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   69.895621][  T200]  register_netdev (net/core/dev.c:11552)
[   69.895749][  T200]  loopback_net_init (drivers/net/loopback.c:218)
[   69.895879][  T200]  ops_init (net/core/net_namespace.c:137)
[   69.895979][  T200]  setup_net (net/core/net_namespace.c:446)
[   69.896078][  T200]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   69.896211][  T200]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   69.896338][  T200]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   69.896474][  T200]  copy_net_ns (net/core/net_namespace.c:579)
[   69.896603][  T200]  create_new_namespaces (kernel/nsproxy.c:132)
[   69.896734][  T200]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   69.896864][  T200]  ksys_unshare (kernel/fork.c:3243)
[   69.896995][  T200]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   69.897126][  T200]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   69.897258][  T200]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   69.897386][  T200]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   69.897518][  T200]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   69.897647][  T200]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   69.897776][  T200]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   69.897939][  T200] RIP: 0033:0x7f290f960bcb
[   69.898074][  T200] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   69.898542][  T200] RSP: 002b:00007fff30e7c928 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   69.898734][  T200] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f290f960bcb
[   69.898927][  T200] RDX: 0000000000000000 RSI: 00007fff30e7c690 RDI: 0000000040000000
[   69.899117][  T200] RBP: 00007fff30e7ccb0 R08: 00007fff30e7c880 R09: 0000000000000000
[   69.899313][  T200] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   69.899508][  T200] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055abbf306b68
| [   69.910056][  T200] ------------[ cut here ]------------
| [   69.910197][  T200] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/200
| [   69.910444][  T200] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   69.910901][  T200] Tainted: [W]=WARN
[   69.910992][  T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   69.911144][  T200] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   69.911305][  T200] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   69.911738][  T200] RSP: 0018:ffa0000000527b58 EFLAGS: 00010286
[   69.911890][  T200] RAX: 00000000ffffffa6 RBX: ff1100000dba9a80 RCX: 1ff40000000a4f31
[   69.912070][  T200] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000dba9b3c
[   69.912254][  T200] RBP: ff1100000ab54000 R08: 1fe2200001b75369 R09: ff1100000c4ad1e8
[   69.912440][  T200] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   69.912619][  T200] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000ab54000
[   69.912803][  T200] FS:  000000003f3af400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   69.913015][  T200] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   69.913165][  T200] CR2: 00007f7561207000 CR3: 000000000db22006 CR4: 0000000000771ef0
[   69.913358][  T200] PKRU: 55555554
[   69.913453][  T200] Call Trace:
[   69.913545][  T200]  <TASK>
[   69.913608][  T200]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   69.913730][  T200]  ? notifier_call_chain (kernel/notifier.c:85)
[   69.913851][  T200]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   69.913943][  T200]  register_netdevice (net/core/dev.c:11488)
[   69.914064][  T200]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   69.914218][  T200]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   69.914343][  T200] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[   69.915381][  T200]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[   69.915656][  T200]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[   69.915783][  T200] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[   69.915903][  T200]  ? build_open_flags (fs/open.c:1212)
[   69.916026][  T200]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   69.916146][  T200]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   69.916274][  T200]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   69.916393][  T200]  ? fput_close_sync (fs/file_table.c:615)
[   69.916517][  T200]  ? __ia32_sys_open (fs/open.c:1374)
[   69.916638][  T200]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   69.916761][  T200]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   69.916881][  T200]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   69.917003][  T200]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   69.917125][  T200]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   69.917281][  T200] RIP: 0033:0x47cc8d
[   69.917376][  T200] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   69.917809][  T200] RSP: 002b:00007ffe5f085c20 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   69.917990][  T200] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   69.918167][  T200] RDX: 00007ffe5f085ca0 RSI: 00000000400454ca RDI: 0000000000000006
[   69.918351][  T200] RBP: 00007ffe5f085c70 R08: 0000000000000000 R09: 0000000000000000
[   69.918532][  T200] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe5f086178
[   69.918714][  T200] R13: 00007ffe5f0861b8 R14: 0000000000000002 R15: 0000000000543540
| [   69.923263][  T200] ------------[ cut here ]------------
| [   69.923384][  T200] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/200
| [   69.923624][  T200] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   69.924063][  T200] Tainted: [W]=WARN
[   69.924150][  T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   69.924306][  T200] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   69.924463][  T200] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   69.924886][  T200] RSP: 0018:ffa0000000527c58 EFLAGS: 00010286
[   69.925031][  T200] RAX: 00000000ffffffa6 RBX: ff1100000dba98c0 RCX: 1ff40000000a4f51
[   69.925212][  T200] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000dba997c
[   69.925384][  T200] RBP: ff1100000ab54000 R08: 1fe2200001b75331 R09: ff1100000c4ad1e8
[   69.925559][  T200] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
[   69.925732][  T200] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000003
[   69.925907][  T200] FS:  000000003f3af400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   69.926115][  T200] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   69.926267][  T200] CR2: 00007f7561207000 CR3: 000000000db22006 CR4: 0000000000771ef0
[   69.926444][  T200] PKRU: 55555554
[   69.926530][  T200] Call Trace:
[   69.926617][  T200]  <TASK>
[   69.926680][  T200]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   69.926798][  T200]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   69.926919][  T200]  notifier_call_chain (kernel/notifier.c:85)
[   69.927036][  T200]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[   69.927153][  T200]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[   69.927303][  T200] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   69.927426][  T200]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   69.927543][  T200]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   69.927661][  T200]  ? update_socket_protocol+0x10/0x10
[   69.927777][  T200]  ? alloc_file_clone (fs/file_table.c:477)
[   69.927895][  T200]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   69.928012][  T200]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   69.928128][  T200]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   69.928252][  T200]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   69.928369][  T200]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   69.928519][  T200] RIP: 0033:0x47cc8d
[   69.928610][  T200] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   69.929026][  T200] RSP: 002b:00007ffe5f085c60 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   69.929204][  T200] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   69.929378][  T200] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   69.929554][  T200] RBP: 00007ffe5f085cb0 R08: 0000000000000005 R09: 0000000000001ff0
[   69.929727][  T200] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffe5f086178
[   69.929900][  T200] R13: 00007ffe5f0861b8 R14: 0000000000000002 R15: 0000000000543540
| [   69.931482][  T200] ------------[ cut here ]------------
| [   69.931604][  T200] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/200
| [   69.931846][  T200] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   69.932308][  T200] Tainted: [W]=WARN
[   69.932399][  T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   69.932557][  T200] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   69.932719][  T200] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   69.933152][  T200] RSP: 0018:ffa0000000527850 EFLAGS: 00010286
[   69.933307][  T200] RAX: 00000000ffffffa6 RBX: ff1100000dba9c40 RCX: 1ff40000000a4ed0
[   69.933495][  T200] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000dba9cfc
[   69.933676][  T200] RBP: ff1100000ab54000 R08: 1fe2200001b753a1 R09: ff1100000c4ad1e8
[   69.933857][  T200] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000001
[   69.934038][  T200] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000005880900
[   69.934226][  T200] FS:  000000003f3af400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   69.934445][  T200] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   69.934600][  T200] CR2: 00007f7561207000 CR3: 000000000db22006 CR4: 0000000000771ef0
[   69.934781][  T200] PKRU: 55555554
[   69.934872][  T200] Call Trace:
[   69.934963][  T200]  <TASK>
[   69.935026][  T200]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   69.935151][  T200]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   69.935248][  T200]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   69.935369][  T200]  __dev_notify_flags (net/core/dev.c:9787)
[   69.935496][  T200]  ? netif_change_name (net/core/dev.c:1495)
[   69.935617][  T200]  ? __dev_change_flags (net/core/dev.c:9752)
[   69.935740][  T200]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   69.935862][  T200]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   69.935987][  T200]  netif_change_flags (net/core/dev.c:9820)
[   69.936107][  T200]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   69.936238][  T200]  dev_change_flags (net/core/dev_api.c:68)
[   69.936361][  T200]  devinet_ioctl (net/ipv4/devinet.c:1199)
[   69.936490][  T200]  ? inet_ifa_byprefix (net/ipv4/devinet.c:619 (discriminator 9))
[   69.936613][  T200]  ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18)
[   69.936738][  T200]  inet_ioctl (net/ipv4/af_inet.c:1011)
[   69.936832][  T200]  ? inet_dgram_connect (net/ipv4/af_inet.c:589)
[   69.936954][  T200]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   69.937080][  T200]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   69.937208][  T200]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   69.937331][  T200]  sock_do_ioctl (net/socket.c:1313)
[   69.937458][  T200]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   69.937583][  T200]  ? ioctl_file_clone (fs/ioctl.c:244)
[   69.937708][  T200]  sock_ioctl (net/socket.c:1434)
[   69.937803][  T200]  ? br_ioctl_call (net/socket.c:1279)
[   69.937926][  T200]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   69.938052][  T200]  ? update_socket_protocol+0x10/0x10
[   69.938178][  T200]  ? alloc_file_clone (fs/file_table.c:477)
[   69.938302][  T200]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   69.938431][  T200]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   69.938554][  T200]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   69.938676][  T200]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   69.938802][  T200]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   69.938953][  T200] RIP: 0033:0x47cc8d
[   69.939048][  T200] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   69.939492][  T200] RSP: 002b:00007ffe5f085c40 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   69.939676][  T200] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   69.939856][  T200] RDX: 00007ffe5f085cb0 RSI: 0000000000008914 RDI: 0000000000000007
[   69.940037][  T200] RBP: 00007ffe5f085c90 R08: 0000000000000005 R09: 0000000000001ff0
[   69.940222][  T200] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffe5f086178
[   69.940408][  T200] R13: 00007ffe5f0861b8 R14: 0000000000000002 R15: 0000000000543540
| [   79.874224][  T200] ------------[ cut here ]------------
| [   79.874536][  T200] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/200
| [   79.874811][  T200] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   79.876112][  T200] Tainted: [W]=WARN
[   79.876220][  T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   79.876388][  T200] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   79.876648][  T200] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   79.877124][  T200] RSP: 0018:ffa00000005276e8 EFLAGS: 00010286
[   79.877297][  T200] RAX: 00000000ffffffa6 RBX: ff1100000c6dd540 RCX: 1ff40000000a4ea3
[   79.877564][  T200] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c6dd5fc
[   79.877771][  T200] RBP: ff1100000ab54000 R08: 1fe22000018dbac1 R09: ff1100000c4ad1e8
[   79.877971][  T200] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000041
[   79.878171][  T200] R13: 0000000000000000 R14: 0000000000000000 R15: ffa0000000527780
[   79.878377][  T200] FS:  0000000000000000(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   79.878702][  T200] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   79.878870][  T200] CR2: 00007f7561207000 CR3: 000000002af39001 CR4: 0000000000771ef0
[   79.879072][  T200] PKRU: 55555554
[   79.879172][  T200] Call Trace:
[   79.879278][  T200]  <TASK>
[   79.879348][  T200]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   79.879565][  T200]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   79.879668][  T200]  netif_close_many (net/core/dev.c:1804)
[   79.879805][  T200]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   79.879940][  T200]  ? __dev_close_many (net/core/dev.c:1781)
[   79.880072][  T200]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[   79.880244][  T200]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   79.880476][  T200]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[   79.880612][  T200]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   79.880778][  T200]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   79.880912][  T200]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   79.881046][  T200]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   79.881278][  T200]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   79.881503][  T200]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   79.881638][  T200]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   79.881771][  T200]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   79.881906][  T200]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   79.882042][  T200] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   79.882274][  T200] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   79.882489][  T200]  __fput (fs/file_table.c:510)
[   79.882600][  T200]  task_work_run (kernel/task_work.c:233)
[   79.882733][  T200]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   79.882867][  T200]  ? task_work_cancel (kernel/task_work.c:190)
[   79.883001][  T200]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   79.883229][  T200]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   79.883331][  T200]  ? exit_notify (kernel/exit.c:748)
[   79.883531][  T200]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   79.883667][  T200]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   79.883799][  T200]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   79.883932][  T200]  do_group_exit (kernel/exit.c:1119)
[   79.884064][  T200]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   79.884324][  T200]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   79.884548][  T200]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   79.884683][  T200]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   79.884814][  T200]  get_signal (kernel/signal.c:3037)
[   79.884950][  T200]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   79.885174][  T200]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   79.885310][  T200]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   79.885524][  T200]  ? ptrace_signal (./include/linux/signal.h:87)
[   79.885659][  T200]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   79.885792][  T200]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   79.885924][  T200]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   79.886147][  T200]  ? fd_install (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:960 (discriminator 2) fs/file.c:699 (discriminator 2))
[   79.886285][  T200]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   79.886488][  T200]  ? update_socket_protocol+0x10/0x10
[   79.886622][  T200]  ? alloc_file_clone (fs/file_table.c:477)
[   79.886756][  T200]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   79.886888][  T200]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   79.887143][  T200]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   79.887281][  T200]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   79.887502][  T200]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   79.887636][  T200]  ? irq_exit_rcu (kernel/softirq.c:754)
[   79.887772][  T200]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   79.887937][  T200] RIP: 0033:0x47ea2b
[   79.888138][  T200] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   79.888313][  T200] RSP: 002b:00007ffe5f0856c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[   79.888596][  T200] RAX: 0000000000000008 RBX: 00007ffe5f0857a0 RCX: 000000000047ea2b
[   79.888796][  T200] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   79.889085][  T200] RBP: 00007ffe5f085700 R08: 0000000000000041 R09: 000000003f3b0450
[   79.889285][  T200] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffe5f086178
[   79.889554][  T200] R13: 00007ffe5f0861b8 R14: 00007ffe5f085c78 R15: 0000000000543540
| [   79.903587][  T200] ------------[ cut here ]------------
| [   79.903735][  T200] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/200
| [   79.903996][  T200] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   79.905014][  T200] Tainted: [W]=WARN
[   79.905115][  T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   79.905283][  T200] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   79.905511][  T200] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   79.905975][  T200] RSP: 0018:ffa0000000527818 EFLAGS: 00010286
[   79.906141][  T200] RAX: 00000000ffffffa6 RBX: ff1100000d907e00 RCX: 1ff40000000a4ec9
[   79.906335][  T200] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000d907ebc
[   79.906584][  T200] RBP: ff1100000ab54000 R08: 1fe2200001b20fd9 R09: ff1100000c4ad1e8
[   79.906776][  T200] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   79.906966][  T200] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   79.907157][  T200] FS:  0000000000000000(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[   79.907389][  T200] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   79.907606][  T200] CR2: 00007f7561207000 CR3: 000000002af39001 CR4: 0000000000771ef0
[   79.907804][  T200] PKRU: 55555554
[   79.907902][  T200] Call Trace:
[   79.908002][  T200]  <TASK>
[   79.908069][  T200]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   79.908241][  T200]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   79.908455][  T200]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   79.908586][  T200]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   79.908715][  T200]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   79.908844][  T200]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   79.908975][  T200]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   79.909104][  T200]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   79.909239][  T200]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   79.909368][  T200]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   79.909550][  T200] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   79.909685][  T200] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   79.909815][  T200]  __fput (fs/file_table.c:510)
[   79.909916][  T200]  task_work_run (kernel/task_work.c:233)
[   79.910046][  T200]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   79.910175][  T200]  ? task_work_cancel (kernel/task_work.c:190)
[   79.910310][  T200]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   79.910496][  T200]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   79.910597][  T200]  ? exit_notify (kernel/exit.c:748)
[   79.910726][  T200]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   79.910857][  T200]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   79.910984][  T200]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   79.911116][  T200]  do_group_exit (kernel/exit.c:1119)
[   79.911250][  T200]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   79.911463][  T200]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   79.911594][  T200]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   79.911724][  T200]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   79.911854][  T200]  get_signal (kernel/signal.c:3037)
[   79.911984][  T200]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   79.912115][  T200]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   79.912249][  T200]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   79.912377][  T200]  ? ptrace_signal (./include/linux/signal.h:87)
[   79.912558][  T200]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   79.912687][  T200]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   79.912816][  T200]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   79.912949][  T200]  ? fd_install (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:960 (discriminator 2) fs/file.c:699 (discriminator 2))
[   79.913079][  T200]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   79.913213][  T200]  ? update_socket_protocol+0x10/0x10
[   79.913342][  T200]  ? alloc_file_clone (fs/file_table.c:477)
[   79.913522][  T200]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   79.913653][  T200]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   79.913813][  T200]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   79.913943][  T200]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   79.914071][  T200]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   79.914201][  T200]  ? irq_exit_rcu (kernel/softirq.c:754)
[   79.914335][  T200]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   79.914548][  T200] RIP: 0033:0x47ea2b
[   79.914651][  T200] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   79.914816][  T200] RSP: 002b:00007ffe5f0856c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[   79.915012][  T200] RAX: 0000000000000008 RBX: 00007ffe5f0857a0 RCX: 000000000047ea2b
[   79.915207][  T200] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   79.915399][  T200] RBP: 00007ffe5f085700 R08: 0000000000000041 R09: 000000003f3b0450
[   79.915645][  T200] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffe5f086178
[   79.915839][  T200] R13: 00007ffe5f0861b8 R14: 00007ffe5f085c78 R15: 0000000000543540
| [   79.930480][   T12] ------------[ cut here ]------------
| [   79.930652][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: 0/12
| [   79.930937][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   79.931504][   T12] Tainted: [W]=WARN
[   79.931641][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   79.931837][   T12] Workqueue: netns cleanup_net
[   79.932010][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   79.932228][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   79.932729][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   79.932931][   T12] RAX: 00000000ffffffa6 RBX: ff11000005660c80 RCX: 1ff4000000018ed5
[   79.933155][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000005660d3c
[   79.933415][   T12] RBP: ff110000087e1000 R08: 1fe2200000acc1a9 R09: ff11000001afd260
[   79.933659][   T12] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   79.933889][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   79.934132][   T12] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   79.934428][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   79.934636][   T12] CR2: 00007f8ec55e6708 CR3: 000000002af39003 CR4: 0000000000771ef0
[   79.934882][   T12] PKRU: 55555554
[   79.935018][   T12] Call Trace:
[   79.935159][   T12]  <TASK>
[   79.935284][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   79.935499][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   79.935700][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   79.935888][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   79.936068][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[   79.936246][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   79.936438][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   79.936605][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   79.936771][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   79.936942][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   79.937111][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   79.937280][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   79.937472][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   79.937642][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   79.937807][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   79.937974][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   79.938140][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   79.938313][   T12]  process_one_work (kernel/workqueue.c:3314)
[   79.938501][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   79.938670][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   79.938840][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   79.939012][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   79.939180][   T12]  kthread (kernel/kthread.c:436)
[   79.939327][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   79.939536][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   79.939702][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   79.939873][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   79.940068][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   79.940243][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   79.940424][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   79.967616][  T202] ------------[ cut here ]------------
| [   79.967773][  T202] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: unshare/202
| [   79.968032][  T202] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   79.968512][  T202] Tainted: [W]=WARN
[   79.968612][  T202] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   79.968775][  T202] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   79.968946][  T202] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   79.969426][  T202] RSP: 0018:ffa00000006e7ab0 EFLAGS: 00010286
[   79.969593][  T202] RAX: 00000000ffffffa6 RBX: ff1100000a9c1e00 RCX: 1ff40000000dcf1c
[   79.969789][  T202] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000a9c1ebc
[   79.969984][  T202] RBP: ff11000007f89000 R08: 1fe22000015383d9 R09: ff11000008d30b90
[   79.970179][  T202] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   79.970378][  T202] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000007f89000
[   79.970578][  T202] FS:  00007f491b0a8740(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   79.970810][  T202] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   79.970973][  T202] CR2: 0000559e7520b008 CR3: 000000000f48c001 CR4: 0000000000771ef0
[   79.971170][  T202] PKRU: 55555554
[   79.971271][  T202] Call Trace:
[   79.971369][  T202]  <TASK>
[   79.971442][  T202]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   79.971573][  T202]  ? notifier_call_chain (kernel/notifier.c:85)
[   79.971707][  T202]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   79.971809][  T202]  register_netdevice (net/core/dev.c:11488)
[   79.971943][  T202]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   79.972108][  T202]  register_netdev (net/core/dev.c:11552)
[   79.972243][  T202]  loopback_net_init (drivers/net/loopback.c:218)
[   79.972376][  T202]  ops_init (net/core/net_namespace.c:137)
[   79.972481][  T202]  setup_net (net/core/net_namespace.c:446)
[   79.972579][  T202]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   79.972711][  T202]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   79.972842][  T202]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   79.972975][  T202]  copy_net_ns (net/core/net_namespace.c:579)
[   79.973106][  T202]  create_new_namespaces (kernel/nsproxy.c:132)
[   79.973244][  T202]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   79.973377][  T202]  ksys_unshare (kernel/fork.c:3243)
[   79.973515][  T202]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   79.973651][  T202]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   79.973781][  T202]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   79.973914][  T202]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   79.974045][  T202]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   79.974175][  T202]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   79.974311][  T202]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   79.974555][  T202] RIP: 0033:0x7f491b1a3bcb
[   79.974698][  T202] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   79.975165][  T202] RSP: 002b:00007fff090670a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   79.975363][  T202] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f491b1a3bcb
[   79.975635][  T202] RDX: 0000000000000000 RSI: 00007fff09066e10 RDI: 0000000040000000
[   79.975831][  T202] RBP: 00007fff09067430 R08: 00007fff09067000 R09: 0000000000000000
[   79.976023][  T202] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   79.976219][  T202] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000559e357c0b68
| [   79.986285][  T202] ------------[ cut here ]------------
| [   79.986432][  T202] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/202
| [   79.986678][  T202] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   79.987150][  T202] Tainted: [W]=WARN
[   79.987246][  T202] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   79.987410][  T202] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   79.987573][  T202] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   79.988011][  T202] RSP: 0018:ffa00000006e7b58 EFLAGS: 00010286
[   79.988166][  T202] RAX: 00000000ffffffa6 RBX: ff11000008d09700 RCX: 1ff40000000dcf31
[   79.988355][  T202] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008d097bc
[   79.988549][  T202] RBP: ff1100000db88000 R08: 1fe22000011a12f9 R09: ff11000008d30b68
[   79.988734][  T202] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   79.988915][  T202] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000db88000
[   79.989100][  T202] FS:  0000000021434400(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   79.989323][  T202] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   79.989494][  T202] CR2: 00007f80faec6000 CR3: 000000000b36d002 CR4: 0000000000771ef0
[   79.989679][  T202] PKRU: 55555554
[   79.989773][  T202] Call Trace:
[   79.989865][  T202]  <TASK>
[   79.989931][  T202]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   79.990055][  T202]  ? notifier_call_chain (kernel/notifier.c:85)
[   79.990179][  T202]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   79.990277][  T202]  register_netdevice (net/core/dev.c:11488)
[   79.990411][  T202]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   79.990569][  T202]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   79.990696][  T202] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[   79.990857][  T202]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[   79.991012][  T202]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[   79.991137][  T202] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[   79.991267][  T202]  ? build_open_flags (fs/open.c:1212)
[   79.991392][  T202]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   79.991523][  T202]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   79.991650][  T202]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   79.991775][  T202]  ? fput_close_sync (fs/file_table.c:615)
[   79.991926][  T202]  ? __ia32_sys_open (fs/open.c:1374)
[   79.992053][  T202]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   79.992179][  T202]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   79.992306][  T202]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   79.992437][  T202]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   79.992561][  T202]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   79.992718][  T202] RIP: 0033:0x47cc8d
[   79.992817][  T202] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   79.993259][  T202] RSP: 002b:00007ffd1865b330 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   79.993450][  T202] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   79.993638][  T202] RDX: 00007ffd1865b3b0 RSI: 00000000400454ca RDI: 0000000000000006
[   79.993823][  T202] RBP: 00007ffd1865b380 R08: 0000000000000000 R09: 0000000000000000
[   79.994005][  T202] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd1865b888
[   79.994194][  T202] R13: 00007ffd1865b8c8 R14: 0000000000000002 R15: 0000000000543540
| [   80.018535][  T203] ------------[ cut here ]------------
| [   80.018682][  T203] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: ifconfig/203
| [   80.018930][  T203] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   80.019417][  T203] Tainted: [W]=WARN
[   80.019513][  T203] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   80.019667][  T203] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   80.019831][  T203] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   80.020277][  T203] RSP: 0018:ffa0000000607850 EFLAGS: 00010286
[   80.020440][  T203] RAX: 00000000ffffffa6 RBX: ff11000008d091c0 RCX: 1ff40000000c0ed0
[   80.020628][  T203] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008d0927c
[   80.020812][  T203] RBP: ff1100000db88000 R08: 1fe22000011a1251 R09: ff11000004dbd1e8
[   80.021000][  T203] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
[   80.021186][  T203] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
[   80.021377][  T203] FS:  00007fe543767740(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[   80.021600][  T203] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   80.021760][  T203] CR2: 000055a6ffcff5fa CR3: 000000000a361003 CR4: 0000000000771ef0
[   80.021949][  T203] PKRU: 55555554
[   80.022043][  T203] Call Trace:
[   80.022137][  T203]  <TASK>
[   80.022201][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   80.022332][  T203]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   80.022465][  T203]  notifier_call_chain (kernel/notifier.c:85)
[   80.022596][  T203]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[   80.022725][  T203]  ? dev_validate_mtu (net/core/dev.c:9842 (discriminator 2))
[   80.022852][  T203]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   80.022977][  T203]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   80.023103][  T203]  netif_set_mtu (net/core/dev.c:9910)
[   80.023231][  T203]  ? netif_set_mtu_ext (net/core/dev.c:9847 (discriminator 2))
[   80.023360][  T203]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   80.023492][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   80.023616][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   80.023743][  T203]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[   80.023871][  T203]  dev_set_mtu (net/core/dev_api.c:249)
[   80.023966][  T203]  dev_ifsioc (net/core/dev_ioctl.c:562)
[   80.024091][  T203]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   80.024221][  T203]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[   80.024345][  T203]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   80.024477][  T203]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   80.024602][  T203]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.024728][  T203]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   80.024854][  T203]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[   80.024951][  T203]  dev_ioctl (net/core/dev_ioctl.c:816)
[   80.025047][  T203]  sock_do_ioctl (net/socket.c:1327)
[   80.025172][  T203]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 6))
[   80.025303][  T203]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   80.026032][  T203]  ? __handle_mm_fault (mm/memory.c:6443 mm/memory.c:6565)
[   80.026161][  T203]  ? ioctl_file_clone (fs/ioctl.c:244)
[   80.026290][  T203]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   80.027391][  T203]  sock_ioctl (net/socket.c:1434)
[   80.027664][  T203]  ? br_ioctl_call (net/socket.c:1279)
[   80.027790][  T203]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.027916][  T203]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   80.028040][  T203]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   80.028168][  T203]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   80.028298][  T203]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   80.028428][  T203]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   80.028552][  T203]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   80.028677][  T203]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   80.028832][  T203] RIP: 0033:0x7fe54385d5fd
[   80.028962][  T203] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   80.029415][  T203] RSP: 002b:00007ffe6bad3b30 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   80.029605][  T203] RAX: ffffffffffffffda RBX: 00007ffe6bad581d RCX: 00007fe54385d5fd
[   80.029792][  T203] RDX: 00007ffe6bad3be0 RSI: 0000000000008922 RDI: 0000000000000008
[   80.029978][  T203] RBP: 00007ffe6bad3b80 R08: 0000000000000000 R09: 00007ffe6bad5821
[   80.030164][  T203] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe6bad3f18
[   80.030355][  T203] R13: 0000000000000004 R14: 00007fe5439ab000 R15: 000055a6ffcfd918
| [   80.033381][  T202] ------------[ cut here ]------------
| [   80.033523][  T202] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/202
| [   80.033763][  T202] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   80.034227][  T202] Tainted: [W]=WARN
[   80.034318][  T202] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   80.034486][  T202] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   80.034642][  T202] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   80.035070][  T202] RSP: 0018:ffa00000006e7c58 EFLAGS: 00010286
[   80.035235][  T202] RAX: 00000000ffffffa6 RBX: ff11000008d098c0 RCX: 1ff40000000dcf51
[   80.035417][  T202] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008d0997c
[   80.035596][  T202] RBP: ff1100000db88000 R08: 1fe22000011a1331 R09: ff11000008d30b68
[   80.035776][  T202] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
[   80.035954][  T202] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000
[   80.036133][  T202] FS:  0000000021434400(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   80.036350][  T202] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   80.036504][  T202] CR2: 00007f80faec6000 CR3: 000000000b36d002 CR4: 0000000000771ef0
[   80.036683][  T202] PKRU: 55555554
[   80.036773][  T202] Call Trace:
[   80.036862][  T202]  <TASK>
[   80.036924][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   80.037047][  T202]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   80.037168][  T202]  notifier_call_chain (kernel/notifier.c:85)
[   80.037297][  T202]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[   80.037426][  T202]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[   80.037578][  T202] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   80.037705][  T202]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   80.037835][  T202]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   80.037964][  T202]  ? update_socket_protocol+0x10/0x10
[   80.038084][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   80.038213][  T202]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   80.038335][  T202]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   80.038461][  T202]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   80.038582][  T202]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   80.038703][  T202]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   80.038851][  T202] RIP: 0033:0x47cc8d
[   80.038946][  T202] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   80.039383][  T202] RSP: 002b:00007ffd1865b370 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   80.039570][  T202] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   80.039747][  T202] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   80.039926][  T202] RBP: 00007ffd1865b3c0 R08: 0000000000000021 R09: 0000000021435450
[   80.040104][  T202] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffd1865b888
[   80.040289][  T202] R13: 00007ffd1865b8c8 R14: 0000000000000002 R15: 0000000000543540
| [   80.041939][  T202] ------------[ cut here ]------------
| [   80.042066][  T202] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/202
| [   80.042319][  T202] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   80.042806][  T202] Tainted: [W]=WARN
[   80.042901][  T202] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   80.043058][  T202] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   80.043229][  T202] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   80.043687][  T202] RSP: 0018:ffa00000006e7910 EFLAGS: 00010286
[   80.043846][  T202] RAX: 00000000ffffffa6 RBX: ff11000008d09c40 RCX: 1ff40000000dcee8
[   80.044035][  T202] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008d09cfc
[   80.044229][  T202] RBP: ff1100000db88000 R08: 1fe22000011a13a1 R09: ff11000008d30b68
[   80.044435][  T202] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
[   80.044642][  T202] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000000010d1
[   80.044832][  T202] FS:  0000000021434400(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   80.045053][  T202] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   80.045218][  T202] CR2: 00007f80faec6000 CR3: 000000000b36d002 CR4: 0000000000771ef0
[   80.045414][  T202] PKRU: 55555554
[   80.045508][  T202] Call Trace:
[   80.045602][  T202]  <TASK>
[   80.045668][  T202]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   80.045797][  T202]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   80.045893][  T202]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   80.046020][  T202]  __dev_notify_flags (net/core/dev.c:9787)
[   80.046147][  T202]  ? netif_change_name (net/core/dev.c:1495)
[   80.046279][  T202]  ? __dev_change_flags (net/core/dev.c:9752)
[   80.046412][  T202]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   80.046540][  T202]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   80.046666][  T202]  ? dev_ioctl (./include/linux/rtnetlink.h:130 net/core/dev_ioctl.c:815)
[   80.046793][  T202]  netif_change_flags (net/core/dev.c:9820)
[   80.046922][  T202]  dev_change_flags (net/core/dev_api.c:68)
[   80.047050][  T202]  dev_ifsioc (net/core/dev_ioctl.c:555)
[   80.047177][  T202]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   80.047309][  T202]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[   80.047439][  T202]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   80.047567][  T202]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   80.047692][  T202]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.047820][  T202]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   80.047949][  T202]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[   80.048046][  T202]  dev_ioctl (net/core/dev_ioctl.c:816)
[   80.048142][  T202]  sock_do_ioctl (net/socket.c:1327)
[   80.048274][  T202]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   80.048408][  T202]  ? ioctl_file_clone (fs/ioctl.c:244)
[   80.048537][  T202]  sock_ioctl (net/socket.c:1434)
[   80.048633][  T202]  ? br_ioctl_call (net/socket.c:1279)
[   80.048760][  T202]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   80.048889][  T202]  ? update_socket_protocol+0x10/0x10
[   80.049014][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   80.049140][  T202]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   80.049272][  T202]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   80.049398][  T202]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   80.049527][  T202]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   80.049655][  T202]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   80.049812][  T202] RIP: 0033:0x47cc8d
[   80.049913][  T202] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   80.050365][  T202] RSP: 002b:00007ffd1865b350 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   80.050560][  T202] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   80.050752][  T202] RDX: 00007ffd1865b3c0 RSI: 0000000000008914 RDI: 0000000000000007
[   80.050940][  T202] RBP: 00007ffd1865b3a0 R08: 0000000000000021 R09: 0000000021435450
[   80.051127][  T202] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffd1865b888
[   80.051322][  T202] R13: 00007ffd1865b8c8 R14: 0000000000000002 R15: 0000000000543540
| [   89.974642][  T202] ------------[ cut here ]------------
| [   89.974868][  T202] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/202
| [   89.975138][  T202] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   89.975730][  T202] Tainted: [W]=WARN
[   89.975833][  T202] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   89.976034][  T202] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   89.976312][  T202] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   89.976893][  T202] RSP: 0018:ffa00000006e76e8 EFLAGS: 00010286
[   89.977064][  T202] RAX: 00000000ffffffa6 RBX: ff1100000b2d5e00 RCX: 1ff40000000dcea3
[   89.977289][  T202] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b2d5ebc
[   89.977549][  T202] RBP: ff1100000db88000 R08: 1fe220000165abd9 R09: ff11000008d30b68
[   89.977749][  T202] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000041
[   89.977951][  T202] R13: 0000000000000000 R14: 0000000000000000 R15: ffa00000006e7780
[   89.978156][  T202] FS:  0000000000000000(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   89.978400][  T202] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   89.978664][  T202] CR2: 00007f80faec6000 CR3: 000000002af39003 CR4: 0000000000771ef0
[   89.978883][  T202] PKRU: 55555554
[   89.978985][  T202] Call Trace:
[   89.979087][  T202]  <TASK>
[   89.979158][  T202]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   89.979299][  T202]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   89.979498][  T202]  netif_close_many (net/core/dev.c:1804)
[   89.979636][  T202]  ? asym_cpu_capacity_scan (./include/linux/rculist.h:103)
[   89.979784][  T202]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   89.979918][  T202]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.980052][  T202]  ? __dev_close_many (net/core/dev.c:1781)
[   89.980185][  T202]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[   89.980370][  T202]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   89.980597][  T202]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[   89.980734][  T202]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   89.980900][  T202]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.981036][  T202]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.981170][  T202]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   89.981308][  T202]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   89.981504][  T202]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   89.981641][  T202]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   89.981776][  T202]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   89.981911][  T202]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   89.982048][  T202] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   89.982190][  T202] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   89.982331][  T202]  __fput (fs/file_table.c:510)
[   89.982497][  T202]  task_work_run (kernel/task_work.c:233)
[   89.982632][  T202]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   89.982767][  T202]  ? task_work_cancel (kernel/task_work.c:190)
[   89.982902][  T202]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   89.983041][  T202]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   89.983146][  T202]  ? exit_notify (kernel/exit.c:748)
[   89.983305][  T202]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.983498][  T202]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   89.983646][  T202]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   89.983791][  T202]  do_group_exit (kernel/exit.c:1119)
[   89.983925][  T202]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   89.984090][  T202]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   89.984223][  T202]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   89.984361][  T202]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   89.984552][  T202]  get_signal (kernel/signal.c:3037)
[   89.984688][  T202]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   89.984822][  T202]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   89.984954][  T202]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.985089][  T202]  ? ptrace_signal (./include/linux/signal.h:87)
[   89.985224][  T202]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   89.985361][  T202]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.985591][  T202]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   89.985726][  T202]  ? fd_install (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:960 (discriminator 2) fs/file.c:699 (discriminator 2))
[   89.985862][  T202]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   89.986000][  T202]  ? update_socket_protocol+0x10/0x10
[   89.986134][  T202]  ? alloc_file_clone (fs/file_table.c:477)
[   89.986272][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   89.986499][  T202]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   89.986668][  T202]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   89.986819][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   89.986954][  T202]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   89.987090][  T202]  ? irq_exit_rcu (kernel/softirq.c:754)
[   89.987223][  T202]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   89.987395][  T202] RIP: 0033:0x47ea2b
[   89.987564][  T202] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   89.987740][  T202] RSP: 002b:00007ffd1865add8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[   89.987942][  T202] RAX: 0000000000000008 RBX: 00007ffd1865aeb0 RCX: 000000000047ea2b
[   89.988141][  T202] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   89.988344][  T202] RBP: 00007ffd1865ae10 R08: 0000000000000041 R09: 0000000021435450
[   89.988638][  T202] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffd1865b888
[   89.988841][  T202] R13: 00007ffd1865b8c8 R14: 00007ffd1865b388 R15: 0000000000543540
| [   90.001655][  T202] ------------[ cut here ]------------
| [   90.001799][  T202] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/202
| [   90.002066][  T202] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   90.002574][  T202] Tainted: [W]=WARN
[   90.002672][  T202] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   90.002835][  T202] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   90.003004][  T202] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   90.003476][  T202] RSP: 0018:ffa00000006e7818 EFLAGS: 00010286
[   90.003642][  T202] RAX: 00000000ffffffa6 RBX: ff11000005045700 RCX: 1ff40000000dcec9
[   90.003834][  T202] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000050457bc
[   90.004027][  T202] RBP: ff1100000db88000 R08: 1fe2200000a08af9 R09: ff11000008d30b68
[   90.004221][  T202] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   90.004948][  T202] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   90.005142][  T202] FS:  0000000000000000(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[   90.005372][  T202] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   90.006052][  T202] CR2: 00007f80faec6000 CR3: 000000002af39003 CR4: 0000000000771ef0
[   90.006281][  T202] PKRU: 55555554
[   90.006378][  T202] Call Trace:
[   90.006585][  T202]  <TASK>
[   90.006654][  T202]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   90.006845][  T202]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   90.007004][  T202]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   90.007134][  T202]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   90.007268][  T202]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   90.007398][  T202]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[   90.007534][  T202]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   90.007665][  T202]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   90.007793][  T202]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   90.007922][  T202]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[   90.008051][  T202] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   90.008183][  T202] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   90.008318][  T202]  __fput (fs/file_table.c:510)
[   90.008423][  T202]  task_work_run (kernel/task_work.c:233)
[   90.008554][  T202]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   90.008683][  T202]  ? task_work_cancel (kernel/task_work.c:190)
[   90.008813][  T202]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[   90.008943][  T202]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   90.009042][  T202]  ? exit_notify (kernel/exit.c:748)
[   90.009171][  T202]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   90.009306][  T202]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   90.009439][  T202]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   90.009568][  T202]  do_group_exit (kernel/exit.c:1119)
[   90.009697][  T202]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   90.009855][  T202]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   90.009983][  T202]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[   90.010112][  T202]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[   90.010247][  T202]  get_signal (kernel/signal.c:3037)
[   90.010378][  T202]  ? __raw_spin_lock_init (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/spinlock_debug.c:25)
[   90.010509][  T202]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   90.010637][  T202]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   90.010780][  T202]  ? ptrace_signal (./include/linux/signal.h:87)
[   90.010932][  T202]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   90.011059][  T202]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   90.011192][  T202]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   90.011333][  T202]  ? fd_install (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:960 (discriminator 2) fs/file.c:699 (discriminator 2))
[   90.011472][  T202]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[   90.011602][  T202]  ? update_socket_protocol+0x10/0x10
[   90.011731][  T202]  ? alloc_file_clone (fs/file_table.c:477)
[   90.011858][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   90.011987][  T202]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   90.012150][  T202]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   90.012283][  T202]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   90.012417][  T202]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[   90.012546][  T202]  ? irq_exit_rcu (kernel/softirq.c:754)
[   90.012676][  T202]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   90.012843][  T202] RIP: 0033:0x47ea2b
[   90.012947][  T202] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   90.013116][  T202] RSP: 002b:00007ffd1865add8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[   90.013315][  T202] RAX: 0000000000000008 RBX: 00007ffd1865aeb0 RCX: 000000000047ea2b
[   90.013512][  T202] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   90.013704][  T202] RBP: 00007ffd1865ae10 R08: 0000000000000041 R09: 0000000021435450
[   90.013900][  T202] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffd1865b888
[   90.014099][  T202] R13: 00007ffd1865b8c8 R14: 00007ffd1865b388 R15: 0000000000543540
| [   90.029605][   T12] ------------[ cut here ]------------
| [   90.029774][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: 0/12
| [   90.030061][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   90.030629][   T12] Tainted: [W]=WARN
[   90.030767][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   90.030958][   T12] Workqueue: netns cleanup_net
[   90.031140][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   90.031386][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   90.031886][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   90.032095][   T12] RAX: 00000000ffffffa6 RBX: ff11000005044c80 RCX: 1ff4000000018ed5
[   90.032328][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000005044d3c
[   90.032573][   T12] RBP: ff11000007f89000 R08: 1fe2200000a089a9 R09: ff11000001afd260
[   90.032804][   T12] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   90.033032][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   90.033281][   T12] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   90.033565][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   90.033774][   T12] CR2: 00007fd139b69000 CR3: 000000002af39003 CR4: 0000000000771ef0
[   90.034012][   T12] PKRU: 55555554
[   90.034162][   T12] Call Trace:
[   90.034322][   T12]  <TASK>
[   90.034453][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   90.034676][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   90.034872][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   90.035041][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   90.035211][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[   90.035387][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   90.035571][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   90.035735][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   90.035898][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   90.036065][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   90.036234][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   90.036420][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   90.036588][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   90.036753][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   90.036916][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   90.037081][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   90.037252][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   90.037431][   T12]  process_one_work (kernel/workqueue.c:3314)
[   90.037601][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   90.037765][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   90.037933][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   90.038100][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   90.038280][   T12]  kthread (kernel/kthread.c:436)
[   90.038428][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   90.038621][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   90.038787][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   90.038953][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   90.039147][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   90.039320][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   90.039500][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   90.062304][  T205] ------------[ cut here ]------------
| [   90.062947][  T205] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: unshare/205
| [   90.063254][  T205] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   90.063894][  T205] Tainted: [W]=WARN
[   90.064037][  T205] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   90.064249][  T205] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   90.064485][  T205] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   90.064987][  T205] RSP: 0018:ffa0000000527ab0 EFLAGS: 00010286
[   90.065196][  T205] RAX: 00000000ffffffa6 RBX: ff1100000a9c7380 RCX: 1ff40000000a4f1c
[   90.065452][  T205] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000a9c743c
[   90.065694][  T205] RBP: ff11000007f81000 R08: 1fe2200001538e89 R09: ff11000004db8b90
[   90.065932][  T205] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   90.066168][  T205] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000007f81000
[   90.066425][  T205] FS:  00007f957bb52740(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   90.066701][  T205] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   90.066910][  T205] CR2: 00007f957bd14280 CR3: 000000000b36d004 CR4: 0000000000771ef0
[   90.067149][  T205] PKRU: 55555554
[   90.067299][  T205] Call Trace:
[   90.067452][  T205]  <TASK>
[   90.067566][  T205]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   90.067747][  T205]  ? notifier_call_chain (kernel/notifier.c:85)
[   90.067923][  T205]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   90.068069][  T205]  register_netdevice (net/core/dev.c:11488)
[   90.068253][  T205]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   90.068475][  T205]  register_netdev (net/core/dev.c:11552)
[   90.068651][  T205]  loopback_net_init (drivers/net/loopback.c:218)
[   90.068829][  T205]  ops_init (net/core/net_namespace.c:137)
[   90.068976][  T205]  setup_net (net/core/net_namespace.c:446)
[   90.069124][  T205]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   90.069304][  T205]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   90.069494][  T205]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   90.069672][  T205]  copy_net_ns (net/core/net_namespace.c:579)
[   90.069849][  T205]  create_new_namespaces (kernel/nsproxy.c:132)
[   90.070028][  T205]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   90.070207][  T205]  ksys_unshare (kernel/fork.c:3243)
[   90.070390][  T205]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   90.070581][  T205]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   90.070756][  T205]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   90.070931][  T205]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   90.071105][  T205]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   90.071281][  T205]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   90.071472][  T205]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   90.071681][  T205] RIP: 0033:0x7f957bc4dbcb
[   90.071862][  T205] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   90.072369][  T205] RSP: 002b:00007ffc95808048 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   90.072619][  T205] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f957bc4dbcb
[   90.072857][  T205] RDX: 0000000000000000 RSI: 00007ffc95807db0 RDI: 0000000040000000
[   90.073095][  T205] RBP: 00007ffc958083d0 R08: 00007ffc95807fa0 R09: 0000000000000000
[   90.073339][  T205] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   90.073588][  T205] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055f9817efb68
| [   90.084352][  T205] ------------[ cut here ]------------
| [   90.085380][  T205] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/205
| [   90.085842][  T205] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   90.086415][  T205] Tainted: [W]=WARN
[   90.086557][  T205] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   90.086756][  T205] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   90.086961][  T205] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   90.087453][  T205] RSP: 0018:ffa0000000527b58 EFLAGS: 00010286
[   90.087657][  T205] RAX: 00000000ffffffa6 RBX: ff1100000c7d1700 RCX: 1ff40000000a4f31
[   90.087885][  T205] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c7d17bc
[   90.088111][  T205] RBP: ff1100000db8c000 R08: 1fe22000018fa2f9 R09: ff11000004db8b68
[   90.088346][  T205] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   90.088589][  T205] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000db8c000
[   90.088819][  T205] FS:  0000000035edd400(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   90.089077][  T205] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   90.089283][  T205] CR2: 00007f4cc4b63000 CR3: 000000000d837005 CR4: 0000000000771ef0
[   90.089528][  T205] PKRU: 55555554
[   90.089666][  T205] Call Trace:
[   90.089804][  T205]  <TASK>
[   90.089914][  T205]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   90.090083][  T205]  ? notifier_call_chain (kernel/notifier.c:85)
[   90.090260][  T205]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   90.090415][  T205]  register_netdevice (net/core/dev.c:11488)
[   90.090584][  T205]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   90.090786][  T205]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   90.090956][  T205] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[   90.091160][  T205]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[   90.091368][  T205]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[   90.091548][  T205] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[   90.091717][  T205]  ? build_open_flags (fs/open.c:1212)
[   90.091889][  T205]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   90.092061][  T205]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   90.092231][  T205]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   90.092419][  T205]  ? fput_close_sync (fs/file_table.c:615)
[   90.092587][  T205]  ? __ia32_sys_open (fs/open.c:1374)
[   90.092757][  T205]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   90.092928][  T205]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   90.093096][  T205]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   90.093270][  T205]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   90.093453][  T205]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   90.093650][  T205] RIP: 0033:0x47cc8d
[   90.093793][  T205] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   90.094276][  T205] RSP: 002b:00007ffc6654a570 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   90.094522][  T205] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   90.094748][  T205] RDX: 00007ffc6654a5f0 RSI: 00000000400454ca RDI: 0000000000000006
[   90.094974][  T205] RBP: 00007ffc6654a5c0 R08: 0000000000000000 R09: 0000000000000000
[   90.095201][  T205] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc6654aac8
[   90.095448][  T205] R13: 00007ffc6654ab08 R14: 0000000000000002 R15: 0000000000543540
| [   90.097470][  T205] ------------[ cut here ]------------
| [   90.097627][  T205] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/205
| [   90.097908][  T205] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   90.098466][  T205] Tainted: [W]=WARN
[   90.098600][  T205] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   90.098793][  T205] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   90.098995][  T205] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   90.099474][  T205] RSP: 0018:ffa0000000527c58 EFLAGS: 00010286
[   90.099670][  T205] RAX: 00000000ffffffa6 RBX: ff1100000c7d1e00 RCX: 1ff40000000a4f51
[   90.099890][  T205] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c7d1ebc
[   90.100108][  T205] RBP: ff1100000db8c000 R08: 1fe22000018fa3d9 R09: ff11000004db8b68
[   90.100339][  T205] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000000
[   90.100573][  T205] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000002
[   90.100796][  T205] FS:  0000000035edd400(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   90.101050][  T205] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   90.101251][  T205] CR2: 00007f4cc4b63000 CR3: 000000000d837005 CR4: 0000000000771ef0
[   90.101485][  T205] PKRU: 55555554
[   90.101622][  T205] Call Trace:
[   90.101756][  T205]  <TASK>
[   90.101864][  T205]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   90.102029][  T205]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   90.102196][  T205]  notifier_call_chain (kernel/notifier.c:85)
[   90.102370][  T205]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[   90.102547][  T205]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[   90.102743][  T205] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   90.102914][  T205]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[   90.103080][  T205]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   90.103256][  T205]  ? update_socket_protocol+0x10/0x10
[   90.103433][  T205]  ? alloc_file_clone (fs/file_table.c:477)
[   90.103600][  T205]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   90.103767][  T205]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   90.103931][  T205]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   90.104094][  T205]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   90.104270][  T205]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   90.104477][  T205] RIP: 0033:0x47cc8d
[   90.104619][  T205] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   90.105079][  T205] RSP: 002b:00007ffc6654a5b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   90.105310][  T205] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   90.105545][  T205] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   90.105766][  T205] RBP: 00007ffc6654a600 R08: 0000000000000000 R09: 0000000000000000
[   90.105987][  T205] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc6654aac8
[   90.106211][  T205] R13: 00007ffc6654ab08 R14: 0000000000000002 R15: 0000000000543540
| [   90.108231][  T205] ------------[ cut here ]------------
| [   90.108414][  T205] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/205
| [   90.108704][  T205] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   90.109272][  T205] Tainted: [W]=WARN
[   90.109424][  T205] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   90.109629][  T205] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   90.109839][  T205] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   90.110334][  T205] RSP: 0018:ffa0000000527850 EFLAGS: 00010286
[   90.110548][  T205] RAX: 00000000ffffffa6 RBX: ff1100000c7d1540 RCX: 1ff40000000a4ed0
[   90.110782][  T205] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c7d15fc
[   90.111011][  T205] RBP: ff1100000db8c000 R08: 1fe22000018fa2c1 R09: ff11000004db8b68
[   90.111248][  T205] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000001
[   90.111491][  T205] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000005882340
[   90.111729][  T205] FS:  0000000035edd400(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[   90.111992][  T205] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   90.112193][  T205] CR2: 00007f4cc4b63000 CR3: 000000000d837005 CR4: 0000000000771ef0
[   90.112444][  T205] PKRU: 55555554
[   90.112585][  T205] Call Trace:
[   90.112727][  T205]  <TASK>
[   90.112838][  T205]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   90.113011][  T205]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   90.113152][  T205]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   90.113331][  T205]  __dev_notify_flags (net/core/dev.c:9787)
[   90.113514][  T205]  ? netif_change_name (net/core/dev.c:1495)
[   90.113685][  T205]  ? __dev_change_flags (net/core/dev.c:9752)
[   90.113857][  T205]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   90.114032][  T205]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   90.114205][  T205]  netif_change_flags (net/core/dev.c:9820)
[   90.114380][  T205]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   90.114566][  T205]  dev_change_flags (net/core/dev_api.c:68)
[   90.114739][  T205]  devinet_ioctl (net/ipv4/devinet.c:1199)
[   90.114913][  T205]  ? inet_ifa_byprefix (net/ipv4/devinet.c:619 (discriminator 9))
[   90.115086][  T205]  ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18)
[   90.115268][  T205]  inet_ioctl (net/ipv4/af_inet.c:1011)
[   90.115421][  T205]  ? inet_dgram_connect (net/ipv4/af_inet.c:589)
[   90.115592][  T205]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   90.115768][  T205]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   90.115939][  T205]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   90.116111][  T205]  sock_do_ioctl (net/socket.c:1313)
[   90.116294][  T205]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[   90.116480][  T205]  ? ioctl_file_clone (fs/ioctl.c:244)
[   90.116660][  T205]  sock_ioctl (net/socket.c:1434)
[   90.116804][  T205]  ? br_ioctl_call (net/socket.c:1279)
[   90.116976][  T205]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[   90.117149][  T205]  ? update_socket_protocol+0x10/0x10
[   90.117326][  T205]  ? alloc_file_clone (fs/file_table.c:477)
[   90.117517][  T205]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   90.117690][  T205]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   90.117862][  T205]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   90.118034][  T205]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   90.118208][  T205]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   90.118426][  T205] RIP: 0033:0x47cc8d
[   90.118570][  T205] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[   90.119058][  T205] RSP: 002b:00007ffc6654a590 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   90.119299][  T205] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   90.119541][  T205] RDX: 00007ffc6654a600 RSI: 0000000000008914 RDI: 0000000000000007
[   90.119770][  T205] RBP: 00007ffc6654a5e0 R08: 0000000000000000 R09: 0000000000000000
[   90.120001][  T205] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc6654aac8
[   90.120234][  T205] R13: 00007ffc6654ab08 R14: 0000000000000002 R15: 0000000000543540
| [  100.043980][  T205] ------------[ cut here ]------------
| [  100.044253][  T205] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/205
| [  100.044611][  T205] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  100.045275][  T205] Tainted: [W]=WARN
[  100.045531][  T205] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  100.045820][  T205] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  100.046165][  T205] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  100.046838][  T205] RSP: 0018:ffa00000005276e8 EFLAGS: 00010286
[  100.047127][  T205] RAX: 00000000ffffffa6 RBX: ff1100000a203700 RCX: 1ff40000000a4ea3
[  100.047491][  T205] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000a2037bc
[  100.047809][  T205] RBP: ff1100000db8c000 R08: 1fe22000014406f9 R09: ff11000004db8b68
[  100.048125][  T205] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000041
[  100.048457][  T205] R13: 0000000000000000 R14: 0000000000000000 R15: ffa0000000527780
[  100.048764][  T205] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[  100.049123][  T205] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.049455][  T205] CR2: 00007f4cc4b63000 CR3: 000000002af39006 CR4: 0000000000771ef0
[  100.049780][  T205] PKRU: 55555554
[  100.050021][  T205] Call Trace:
[  100.050288][  T205]  <TASK>
[  100.050491][  T205]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  100.050775][  T205]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  100.051012][  T205]  netif_close_many (net/core/dev.c:1804)
[  100.051264][  T205]  ? asym_cpu_capacity_scan (./include/linux/rculist.h:103)
[  100.051563][  T205]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  100.051826][  T205]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  100.052075][  T205]  ? __dev_close_many (net/core/dev.c:1781)
[  100.052358][  T205]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[  100.052669][  T205]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  100.052956][  T205]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[  100.053235][  T205]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  100.053551][  T205]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  100.053805][  T205]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  100.054087][  T205]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  100.054364][  T205]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[  100.054636][  T205]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[  100.054918][  T205]  ? unregister_netdevice_many (net/core/dev.c:12497)
[  100.055189][  T205]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  100.055465][  T205]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[  100.055760][  T205] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  100.056036][  T205] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  100.056294][  T205]  __fput (fs/file_table.c:510)
[  100.056552][  T205]  task_work_run (kernel/task_work.c:233)
[  100.056817][  T205]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  100.057095][  T205]  ? task_work_cancel (kernel/task_work.c:190)
[  100.057385][  T205]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[  100.057674][  T205]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  100.057896][  T205]  ? exit_notify (kernel/exit.c:748)
[  100.058174][  T205]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  100.058462][  T205]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  100.058711][  T205]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  100.058997][  T205]  do_group_exit (kernel/exit.c:1119)
[  100.059262][  T205]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  100.059566][  T205]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  100.059841][  T205]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[  100.060105][  T205]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[  100.060361][  T205]  get_signal (kernel/signal.c:3037)
[  100.060652][  T205]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[  100.060918][  T205]  ? __ia32_sys_getpeername (net/socket.c:2219)
[  100.061171][  T205]  ? ptrace_signal (./include/linux/signal.h:87)
[  100.061470][  T205]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  100.061737][  T205]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[  100.061988][  T205]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.062265][  T205]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  100.062582][  T205]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  100.062804][  T205]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.062984][  T205]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[  100.063169][  T205]  ? irq_exit_rcu (kernel/softirq.c:754)
[  100.063362][  T205]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  100.063591][  T205] RIP: 0033:0x4c2d9e
[  100.063747][  T205] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[  100.063995][  T205] RSP: 002b:00007ffc66549f20 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  100.064254][  T205] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[  100.064532][  T205] RDX: 0000000000000014 RSI: 00007ffc6654a000 RDI: 0000000000000008
[  100.064780][  T205] RBP: 00007ffc66549f30 R08: 00007ffc66549fc0 R09: 000000000000000c
[  100.065029][  T205] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000035ee5840
[  100.065285][  T205] R13: 00007ffc6654ab08 R14: 00007ffc6654a0f0 R15: 0000000000543540
| [  100.074063][  T205] ------------[ cut here ]------------
| [  100.074284][  T205] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/205
| [  100.074685][  T205] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  100.075434][  T205] Tainted: [W]=WARN
[  100.075634][  T205] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  100.075904][  T205] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  100.076179][  T205] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  100.076782][  T205] RSP: 0018:ffa0000000527818 EFLAGS: 00010286
[  100.077048][  T205] RAX: 00000000ffffffa6 RBX: ff110000093a1000 RCX: 1ff40000000a4ec9
[  100.077354][  T205] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000093a10bc
[  100.077660][  T205] RBP: ff1100000db8c000 R08: 1fe2200001274219 R09: ff11000004db8b68
[  100.077954][  T205] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[  100.078248][  T205] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  100.078591][  T205] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[  100.078928][  T205] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.079200][  T205] CR2: 00007f4cc4b63000 CR3: 000000002af39006 CR4: 0000000000771ef0
[  100.079523][  T205] PKRU: 55555554
[  100.079725][  T205] Call Trace:
[  100.079926][  T205]  <TASK>
[  100.080097][  T205]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  100.080375][  T205]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  100.080659][  T205]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  100.080894][  T205]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  100.081126][  T205]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  100.081365][  T205]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[  100.081608][  T205]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[  100.081844][  T205]  ? unregister_netdevice_many (net/core/dev.c:12497)
[  100.082077][  T205]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  100.082317][  T205]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[  100.082588][  T205] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  100.082825][  T205] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  100.083070][  T205]  __fput (fs/file_table.c:510)
[  100.083302][  T205]  task_work_run (kernel/task_work.c:233)
[  100.083554][  T205]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  100.083784][  T205]  ? task_work_cancel (kernel/task_work.c:190)
[  100.084023][  T205]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[  100.084257][  T205]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  100.084476][  T205]  ? exit_notify (kernel/exit.c:748)
[  100.084708][  T205]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  100.084970][  T205]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  100.085200][  T205]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  100.085456][  T205]  do_group_exit (kernel/exit.c:1119)
[  100.085687][  T205]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  100.085959][  T205]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  100.086200][  T205]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[  100.086471][  T205]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[  100.086703][  T205]  get_signal (kernel/signal.c:3037)
[  100.086935][  T205]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[  100.087165][  T205]  ? __ia32_sys_getpeername (net/socket.c:2219)
[  100.087445][  T205]  ? ptrace_signal (./include/linux/signal.h:87)
[  100.087687][  T205]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  100.087918][  T205]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[  100.088154][  T205]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.088393][  T205]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  100.088656][  T205]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  100.088840][  T205]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.089021][  T205]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[  100.089201][  T205]  ? irq_exit_rcu (kernel/softirq.c:754)
[  100.089386][  T205]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  100.089607][  T205] RIP: 0033:0x4c2d9e
[  100.089758][  T205] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[  100.089972][  T205] RSP: 002b:00007ffc66549f20 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  100.090217][  T205] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[  100.090478][  T205] RDX: 0000000000000014 RSI: 00007ffc6654a000 RDI: 0000000000000008
[  100.090717][  T205] RBP: 00007ffc66549f30 R08: 00007ffc66549fc0 R09: 000000000000000c
[  100.090957][  T205] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000035ee5840
[  100.091195][  T205] R13: 00007ffc6654ab08 R14: 00007ffc6654a0f0 R15: 0000000000543540
| [  100.113529][   T12] ------------[ cut here ]------------
| [  100.113677][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: 0/12
| [  100.113916][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  100.114494][   T12] Tainted: [W]=WARN
[  100.114607][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  100.114758][   T12] Workqueue: netns cleanup_net
[  100.114885][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  100.115045][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  100.115489][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[  100.115643][   T12] RAX: 00000000ffffffa6 RBX: ff110000093a0580 RCX: 1ff4000000018ed5
[  100.115818][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000093a063c
[  100.115995][   T12] RBP: ff11000007f81000 R08: 1fe22000012740c9 R09: ff11000001afd260
[  100.116171][   T12] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[  100.116357][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  100.116540][   T12] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  100.116749][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.116897][   T12] CR2: 0000555f7647cd5c CR3: 000000000f4de006 CR4: 0000000000771ef0
[  100.117073][   T12] PKRU: 55555554
[  100.117161][   T12] Call Trace:
[  100.117254][   T12]  <TASK>
[  100.117322][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  100.117480][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  100.117633][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[  100.117760][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  100.117879][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[  100.118000][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[  100.118121][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[  100.118241][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[  100.118370][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[  100.118498][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  100.118624][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[  100.118743][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  100.118867][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  100.118989][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  100.119118][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  100.119244][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  100.119365][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.119491][   T12]  process_one_work (kernel/workqueue.c:3314)
[  100.119622][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  100.119757][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  100.119887][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  100.120013][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  100.120131][   T12]  kthread (kernel/kthread.c:436)
[  100.120230][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  100.120393][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  100.120523][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  100.120652][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  100.120810][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  100.120928][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  100.121055][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  100.154827][  T207] ------------[ cut here ]------------
| [  100.155029][  T207] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: unshare/207
| [  100.155304][  T207] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  100.156656][  T207] Tainted: [W]=WARN
[  100.156764][  T207] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  100.156927][  T207] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  100.157097][  T207] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  100.157627][  T207] RSP: 0018:ffa0000000657ab0 EFLAGS: 00010286
[  100.157791][  T207] RAX: 00000000ffffffa6 RBX: ff1100000aa57540 RCX: 1ff40000000caf1c
[  100.157984][  T207] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000aa575fc
[  100.158178][  T207] RBP: ff1100000c121000 R08: 1fe220000154aec1 R09: ff11000005e75210
[  100.158375][  T207] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[  100.158621][  T207] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000c121000
[  100.158817][  T207] FS:  00007f6fd0832740(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  100.159045][  T207] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.159209][  T207] CR2: 00007f6fd09f4280 CR3: 000000000c7f6002 CR4: 0000000000771ef0
[  100.159416][  T207] PKRU: 55555554
[  100.159513][  T207] Call Trace:
[  100.159611][  T207]  <TASK>
[  100.159678][  T207]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  100.159810][  T207]  ? notifier_call_chain (kernel/notifier.c:85)
[  100.159941][  T207]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  100.160040][  T207]  register_netdevice (net/core/dev.c:11488)
[  100.160171][  T207]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[  100.160344][  T207]  register_netdev (net/core/dev.c:11552)
[  100.160482][  T207]  loopback_net_init (drivers/net/loopback.c:218)
[  100.160615][  T207]  ops_init (net/core/net_namespace.c:137)
[  100.160716][  T207]  setup_net (net/core/net_namespace.c:446)
[  100.160815][  T207]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[  100.160944][  T207]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[  100.161081][  T207]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[  100.161217][  T207]  copy_net_ns (net/core/net_namespace.c:579)
[  100.161357][  T207]  create_new_namespaces (kernel/nsproxy.c:132)
[  100.161496][  T207]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[  100.161631][  T207]  ksys_unshare (kernel/fork.c:3243)
[  100.161765][  T207]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[  100.161903][  T207]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[  100.162032][  T207]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[  100.162163][  T207]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  100.162322][  T207]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  100.162457][  T207]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  100.162589][  T207]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  100.162750][  T207] RIP: 0033:0x7f6fd092dbcb
[  100.162887][  T207] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  100.163362][  T207] RSP: 002b:00007ffc5ab04258 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  100.163566][  T207] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6fd092dbcb
[  100.163762][  T207] RDX: 0000000000000000 RSI: 00007ffc5ab03fc0 RDI: 0000000040000000
[  100.163954][  T207] RBP: 00007ffc5ab045e0 R08: 00007ffc5ab041b0 R09: 0000000000000000
[  100.164149][  T207] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  100.164349][  T207] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000564923900b68
| [  100.178914][  T207] ------------[ cut here ]------------
| [  100.179071][  T207] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/207
| [  100.179317][  T207] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  100.179795][  T207] Tainted: [W]=WARN
[  100.179887][  T207] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  100.180039][  T207] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  100.180200][  T207] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  100.180649][  T207] RSP: 0018:ffa0000000657b58 EFLAGS: 00010286
[  100.180802][  T207] RAX: 00000000ffffffa6 RBX: ff11000008acf000 RCX: 1ff40000000caf31
[  100.181004][  T207] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008acf0bc
[  100.181190][  T207] RBP: ff11000009b4c000 R08: 1fe2200001159e19 R09: ff11000005e751e8
[  100.181379][  T207] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[  100.181574][  T207] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000009b4c000
[  100.181758][  T207] FS:  000000002bd4b400(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  100.181978][  T207] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.182140][  T207] CR2: 00007fae7e2f8000 CR3: 0000000008e0c003 CR4: 0000000000771ef0
[  100.182330][  T207] PKRU: 55555554
[  100.182427][  T207] Call Trace:
[  100.182519][  T207]  <TASK>
[  100.182582][  T207]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  100.182706][  T207]  ? notifier_call_chain (kernel/notifier.c:85)
[  100.182831][  T207]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  100.182928][  T207]  register_netdevice (net/core/dev.c:11488)
[  100.183052][  T207]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[  100.183202][  T207]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[  100.183356][  T207] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[  100.183531][  T207]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[  100.183684][  T207]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[  100.183809][  T207] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[  100.183934][  T207]  ? build_open_flags (fs/open.c:1212)
[  100.184058][  T207]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[  100.184181][  T207]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  100.184308][  T207]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[  100.184434][  T207]  ? fput_close_sync (fs/file_table.c:615)
[  100.184557][  T207]  ? __ia32_sys_open (fs/open.c:1374)
[  100.184680][  T207]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  100.184807][  T207]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  100.184928][  T207]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  100.185055][  T207]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  100.185178][  T207]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  100.185334][  T207] RIP: 0033:0x47cc8d
[  100.185436][  T207] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  100.185872][  T207] RSP: 002b:00007fff5b0164e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  100.186059][  T207] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  100.186241][  T207] RDX: 00007fff5b016560 RSI: 00000000400454ca RDI: 0000000000000006
[  100.186434][  T207] RBP: 00007fff5b016530 R08: 0000000000000000 R09: 0000000000000000
[  100.186619][  T207] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff5b016a38
[  100.186801][  T207] R13: 00007fff5b016a78 R14: 0000000000000002 R15: 0000000000543540
| [  100.207660][  T208] ------------[ cut here ]------------
| [  100.207838][  T208] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: ifconfig/208
| [  100.208132][  T208] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  100.208685][  T208] Tainted: [W]=WARN
[  100.208824][  T208] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  100.209028][  T208] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  100.209237][  T208] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  100.210694][  T208] RSP: 0018:ffa0000000557850 EFLAGS: 00010286
[  100.211433][  T208] RAX: 00000000ffffffa6 RBX: ff11000008aceac0 RCX: 1ff40000000aaed0
[  100.211667][  T208] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008aceb7c
[  100.211899][  T208] RBP: ff11000009b4c000 R08: 1fe2200001159d71 R09: ff1100000c3cd1e8
[  100.212130][  T208] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000000
[  100.212370][  T208] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[  100.212620][  T208] FS:  00007f1e70bf2740(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[  100.212884][  T208] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.213086][  T208] CR2: 00005631cfa8b5fa CR3: 000000000c23a005 CR4: 0000000000771ef0
[  100.213329][  T208] PKRU: 55555554
[  100.213480][  T208] Call Trace:
[  100.213627][  T208]  <TASK>
[  100.213738][  T208]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.213908][  T208]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  100.214083][  T208]  notifier_call_chain (kernel/notifier.c:85)
[  100.214258][  T208]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[  100.214452][  T208]  ? dev_validate_mtu (net/core/dev.c:9842 (discriminator 2))
[  100.214628][  T208]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  100.214798][  T208]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[  100.214975][  T208]  netif_set_mtu (net/core/dev.c:9910)
[  100.215147][  T208]  ? netif_set_mtu_ext (net/core/dev.c:9847 (discriminator 2))
[  100.215330][  T208]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  100.215511][  T208]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.215682][  T208]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.215854][  T208]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[  100.216028][  T208]  dev_set_mtu (net/core/dev_api.c:249)
[  100.216171][  T208]  dev_ifsioc (net/core/dev_ioctl.c:562)
[  100.216355][  T208]  ? mark_usage (kernel/locking/lockdep.c:4674)
[  100.216543][  T208]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[  100.216714][  T208]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[  100.216889][  T208]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  100.217058][  T208]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  100.217231][  T208]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  100.217419][  T208]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[  100.217564][  T208]  dev_ioctl (net/core/dev_ioctl.c:816)
[  100.217709][  T208]  sock_do_ioctl (net/socket.c:1327)
[  100.217880][  T208]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 6))
[  100.218052][  T208]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[  100.218225][  T208]  ? __handle_mm_fault (mm/memory.c:6443 mm/memory.c:6565)
[  100.218417][  T208]  ? ioctl_file_clone (fs/ioctl.c:244)
[  100.218590][  T208]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[  100.218763][  T208]  sock_ioctl (net/socket.c:1434)
[  100.218909][  T208]  ? br_ioctl_call (net/socket.c:1279)
[  100.219080][  T208]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  100.219253][  T208]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  100.219444][  T208]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  100.219618][  T208]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  100.219794][  T208]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  100.219966][  T208]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  100.220137][  T208]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  100.220316][  T208]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  100.220530][  T208] RIP: 0033:0x7f1e70ce85fd
[  100.220708][  T208] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  100.221192][  T208] RSP: 002b:00007ffc33547d50 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  100.221449][  T208] RAX: ffffffffffffffda RBX: 00007ffc3354881d RCX: 00007f1e70ce85fd
[  100.221682][  T208] RDX: 00007ffc33547e00 RSI: 0000000000008922 RDI: 0000000000000008
[  100.221913][  T208] RBP: 00007ffc33547da0 R08: 0000000000000000 R09: 00007ffc33548821
[  100.222144][  T208] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc33548138
[  100.222385][  T208] R13: 0000000000000004 R14: 00007f1e70e36000 R15: 00005631cfa89918
| [  100.225784][  T207] ------------[ cut here ]------------
| [  100.225919][  T207] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/207
| [  100.226158][  T207] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  100.226626][  T207] Tainted: [W]=WARN
[  100.226716][  T207] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  100.226863][  T207] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  100.227018][  T207] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  100.227453][  T207] RSP: 0018:ffa0000000657c58 EFLAGS: 00010286
[  100.227603][  T207] RAX: 00000000ffffffa6 RBX: ff11000008acf540 RCX: 1ff40000000caf51
[  100.227786][  T207] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008acf5fc
[  100.227962][  T207] RBP: ff11000009b4c000 R08: 1fe2200001159ec1 R09: ff11000005e751e8
[  100.228138][  T207] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
[  100.228319][  T207] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000001
[  100.228503][  T207] FS:  000000002bd4b400(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  100.228711][  T207] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.228859][  T207] CR2: 00007fae7e2f8000 CR3: 0000000008e0c003 CR4: 0000000000771ef0
[  100.229038][  T207] PKRU: 55555554
[  100.229129][  T207] Call Trace:
[  100.229218][  T207]  <TASK>
[  100.229282][  T207]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.229413][  T207]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  100.229548][  T207]  notifier_call_chain (kernel/notifier.c:85)
[  100.229671][  T207]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[  100.229791][  T207]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[  100.229941][  T207] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[  100.230065][  T207]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[  100.230186][  T207]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[  100.230310][  T207]  ? update_socket_protocol+0x10/0x10
[  100.230448][  T207]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.230569][  T207]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  100.230690][  T207]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  100.230809][  T207]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  100.230926][  T207]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  100.231047][  T207]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  100.231196][  T207] RIP: 0033:0x47cc8d
[  100.231297][  T207] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  100.231725][  T207] RSP: 002b:00007fff5b016520 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  100.231906][  T207] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  100.232082][  T207] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[  100.232266][  T207] RBP: 00007fff5b016570 R08: 0000000000000021 R09: 000000002bd4c450
[  100.232451][  T207] R10: 0000000000000020 R11: 0000000000000246 R12: 00007fff5b016a38
[  100.232630][  T207] R13: 00007fff5b016a78 R14: 0000000000000002 R15: 0000000000543540
| [  100.234262][  T207] ------------[ cut here ]------------
| [  100.234391][  T207] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/207
| [  100.234641][  T207] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  100.235111][  T207] Tainted: [W]=WARN
[  100.235205][  T207] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  100.235367][  T207] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  100.235534][  T207] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  100.235977][  T207] RSP: 0018:ffa0000000657910 EFLAGS: 00010286
[  100.236137][  T207] RAX: 00000000ffffffa6 RBX: ff11000008ace900 RCX: 1ff40000000caee8
[  100.236326][  T207] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000008ace9bc
[  100.236518][  T207] RBP: ff11000009b4c000 R08: 1fe2200001159d39 R09: ff11000005e751e8
[  100.236705][  T207] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
[  100.236893][  T207] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000000010d1
[  100.237080][  T207] FS:  000000002bd4b400(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  100.237302][  T207] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.237465][  T207] CR2: 00007fae7e2f8000 CR3: 0000000008e0c003 CR4: 0000000000771ef0
[  100.237652][  T207] PKRU: 55555554
[  100.237746][  T207] Call Trace:
[  100.237840][  T207]  <TASK>
[  100.237904][  T207]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  100.238033][  T207]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  100.238131][  T207]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  100.238257][  T207]  __dev_notify_flags (net/core/dev.c:9787)
[  100.238390][  T207]  ? netif_change_name (net/core/dev.c:1495)
[  100.238520][  T207]  ? __dev_change_flags (net/core/dev.c:9752)
[  100.238647][  T207]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[  100.238772][  T207]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  100.238898][  T207]  ? dev_ioctl (./include/linux/rtnetlink.h:130 net/core/dev_ioctl.c:815)
[  100.239025][  T207]  netif_change_flags (net/core/dev.c:9820)
[  100.239152][  T207]  dev_change_flags (net/core/dev_api.c:68)
[  100.239281][  T207]  dev_ifsioc (net/core/dev_ioctl.c:555)
[  100.239412][  T207]  ? mark_usage (kernel/locking/lockdep.c:4674)
[  100.239537][  T207]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[  100.239664][  T207]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[  100.239791][  T207]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  100.240001][  T207]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  100.240128][  T207]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  100.240253][  T207]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[  100.240355][  T207]  dev_ioctl (net/core/dev_ioctl.c:816)
[  100.240456][  T207]  sock_do_ioctl (net/socket.c:1327)
[  100.240582][  T207]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[  100.240711][  T207]  ? ioctl_file_clone (fs/ioctl.c:244)
[  100.240838][  T207]  sock_ioctl (net/socket.c:1434)
[  100.240933][  T207]  ? br_ioctl_call (net/socket.c:1279)
[  100.241140][  T207]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[  100.241270][  T207]  ? update_socket_protocol+0x10/0x10
[  100.241395][  T207]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  100.241605][  T207]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  100.241736][  T207]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  100.241861][  T207]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  100.241986][  T207]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  100.242112][  T207]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  100.242350][  T207] RIP: 0033:0x47cc8d
[  100.242453][  T207] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  100.242986][  T207] RSP: 002b:00007fff5b016500 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  100.243175][  T207] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  100.243454][  T207] RDX: 00007fff5b016570 RSI: 0000000000008914 RDI: 0000000000000007
[  100.243641][  T207] RBP: 00007fff5b016550 R08: 0000000000000021 R09: 000000002bd4c450
[  100.243828][  T207] R10: 0000000000000020 R11: 0000000000000246 R12: 00007fff5b016a38
[  100.244096][  T207] R13: 00007fff5b016a78 R14: 0000000000000002 R15: 0000000000543540
| [  110.137675][  T207] ------------[ cut here ]------------
| [  110.137886][  T207] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/207
| [  110.138160][  T207] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  110.138698][  T207] Tainted: [W]=WARN
[  110.138800][  T207] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  110.138969][  T207] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  110.139145][  T207] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  110.140184][  T207] RSP: 0018:ffa00000006576e8 EFLAGS: 00010286
[  110.140361][  T207] RAX: 00000000ffffffa6 RBX: ff11000001e4d540 RCX: 1ff40000000caea3
[  110.140618][  T207] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000001e4d5fc
[  110.140822][  T207] RBP: ff11000009b4c000 R08: 1fe22000003c9ac1 R09: ff11000005e751e8
[  110.141022][  T207] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000041
[  110.141224][  T207] R13: 0000000000000000 R14: 0000000000000000 R15: ffa0000000657780
[  110.141488][  T207] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  110.141726][  T207] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.141896][  T207] CR2: 00007ff42dcfd6f0 CR3: 000000002af39004 CR4: 0000000000771ef0
[  110.142099][  T207] PKRU: 55555554
[  110.142199][  T207] Call Trace:
[  110.142306][  T207]  <TASK>
[  110.142377][  T207]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  110.142582][  T207]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  110.142686][  T207]  netif_close_many (net/core/dev.c:1804)
[  110.142824][  T207]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  110.142961][  T207]  ? __dev_close_many (net/core/dev.c:1781)
[  110.143095][  T207]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[  110.143262][  T207]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  110.143522][  T207]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[  110.143673][  T207]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  110.143840][  T207]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  110.143974][  T207]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  110.144109][  T207]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  110.144245][  T207]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[  110.144384][  T207]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[  110.144593][  T207]  ? unregister_netdevice_many (net/core/dev.c:12497)
[  110.144727][  T207]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  110.144863][  T207]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[  110.145000][  T207] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  110.145139][  T207] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  110.145315][  T207]  __fput (fs/file_table.c:510)
[  110.145627][  T207]  task_work_run (kernel/task_work.c:233)
[  110.145839][  T207]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  110.146048][  T207]  ? task_work_cancel (kernel/task_work.c:190)
[  110.146217][  T207]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[  110.146385][  T207]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  110.146685][  T207]  ? exit_notify (kernel/exit.c:748)
[  110.146893][  T207]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  110.147104][  T207]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  110.147264][  T207]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  110.147555][  T207]  do_group_exit (kernel/exit.c:1119)
[  110.147763][  T207]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  110.148021][  T207]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  110.148218][  T207]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[  110.148358][  T207]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[  110.148720][  T207]  get_signal (kernel/signal.c:3037)
[  110.148937][  T207]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[  110.149145][  T207]  ? __ia32_sys_getpeername (net/socket.c:2219)
[  110.149307][  T207]  ? ptrace_signal (./include/linux/signal.h:87)
[  110.149535][  T207]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  110.149674][  T207]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[  110.149810][  T207]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  110.149944][  T207]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  110.150113][  T207]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  110.150247][  T207]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  110.150385][  T207]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[  110.150589][  T207]  ? irq_exit_rcu (kernel/softirq.c:754)
[  110.150727][  T207]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  110.150893][  T207] RIP: 0033:0x4c2d9e
[  110.151003][  T207] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[  110.151175][  T207] RSP: 002b:00007fff5b015e90 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  110.151383][  T207] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[  110.151679][  T207] RDX: 0000000000000014 RSI: 00007fff5b015f70 RDI: 0000000000000008
[  110.151883][  T207] RBP: 00007fff5b015ea0 R08: 00007fff5b015f30 R09: 000000000000000c
[  110.152084][  T207] R10: 0000000000000000 R11: 0000000000000202 R12: 000000002bd55a70
[  110.152287][  T207] R13: 00007fff5b016a78 R14: 00007fff5b016060 R15: 0000000000543540
| [  110.161544][  T207] ------------[ cut here ]------------
| [  110.161686][  T207] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/207
| [  110.161947][  T207] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  110.162459][  T207] Tainted: [W]=WARN
[  110.162557][  T207] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  110.162720][  T207] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  110.162888][  T207] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  110.163361][  T207] RSP: 0018:ffa0000000657818 EFLAGS: 00010286
[  110.164064][  T207] RAX: 00000000ffffffa6 RBX: ff11000001e4c200 RCX: 1ff40000000caec9
[  110.164265][  T207] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000001e4c2bc
[  110.164528][  T207] RBP: ff11000009b4c000 R08: 1fe22000003c9859 R09: ff11000005e751e8
[  110.164724][  T207] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[  110.164919][  T207] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  110.165117][  T207] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  110.165349][  T207] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.165603][  T207] CR2: 00007ff42dcfd6f0 CR3: 000000002af39004 CR4: 0000000000771ef0
[  110.165801][  T207] PKRU: 55555554
[  110.165898][  T207] Call Trace:
[  110.165995][  T207]  <TASK>
[  110.166063][  T207]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  110.166230][  T207]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  110.166399][  T207]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  110.166616][  T207]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  110.166749][  T207]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  110.166880][  T207]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[  110.167011][  T207]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[  110.167143][  T207]  ? unregister_netdevice_many (net/core/dev.c:12497)
[  110.167272][  T207]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  110.167577][  T207]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[  110.167710][  T207] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  110.167845][  T207] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  110.167976][  T207]  __fput (fs/file_table.c:510)
[  110.168077][  T207]  task_work_run (kernel/task_work.c:233)
[  110.168204][  T207]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  110.168338][  T207]  ? task_work_cancel (kernel/task_work.c:190)
[  110.168575][  T207]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[  110.168708][  T207]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  110.168809][  T207]  ? exit_notify (kernel/exit.c:748)
[  110.168940][  T207]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  110.169076][  T207]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  110.169213][  T207]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  110.169347][  T207]  do_group_exit (kernel/exit.c:1119)
[  110.169558][  T207]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  110.169718][  T207]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  110.169849][  T207]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[  110.169976][  T207]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[  110.170107][  T207]  get_signal (kernel/signal.c:3037)
[  110.170238][  T207]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[  110.170516][  T207]  ? __ia32_sys_getpeername (net/socket.c:2219)
[  110.170650][  T207]  ? ptrace_signal (./include/linux/signal.h:87)
[  110.170782][  T207]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  110.170934][  T207]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[  110.171131][  T207]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  110.171278][  T207]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  110.171518][  T207]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  110.171650][  T207]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  110.171782][  T207]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[  110.171911][  T207]  ? irq_exit_rcu (kernel/softirq.c:754)
[  110.172041][  T207]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  110.172271][  T207] RIP: 0033:0x4c2d9e
[  110.172526][  T207] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[  110.172784][  T207] RSP: 002b:00007fff5b015e90 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  110.173079][  T207] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[  110.173343][  T207] RDX: 0000000000000014 RSI: 00007fff5b015f70 RDI: 0000000000000008
[  110.173599][  T207] RBP: 00007fff5b015ea0 R08: 00007fff5b015f30 R09: 000000000000000c
[  110.173795][  T207] R10: 0000000000000000 R11: 0000000000000202 R12: 000000002bd55a70
[  110.173991][  T207] R13: 00007fff5b016a78 R14: 00007fff5b016060 R15: 0000000000543540
| [  110.189488][   T12] ------------[ cut here ]------------
| [  110.189641][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12
| [  110.189878][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  110.190339][   T12] Tainted: [W]=WARN
[  110.190443][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  110.190592][   T12] Workqueue: netns cleanup_net
[  110.190719][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  110.190874][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  110.191318][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[  110.191473][   T12] RAX: 00000000ffffffa6 RBX: ff11000010934580 RCX: 1ff4000000018ed5
[  110.191651][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100001093463c
[  110.191828][   T12] RBP: ff1100000c121000 R08: 1fe22000021268c9 R09: ff11000001afd260
[  110.192006][   T12] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[  110.192182][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  110.192368][   T12] FS:  0000000000000000(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[  110.192588][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.192738][   T12] CR2: 0000555f7647cd5c CR3: 000000000f4de006 CR4: 0000000000771ef0
[  110.192920][   T12] PKRU: 55555554
[  110.193009][   T12] Call Trace:
[  110.193098][   T12]  <TASK>
[  110.193162][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  110.193319][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  110.193474][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[  110.193600][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  110.193723][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[  110.193844][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[  110.193965][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[  110.194087][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[  110.194207][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[  110.194341][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  110.194474][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[  110.194597][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  110.194719][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  110.194840][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  110.194963][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  110.195083][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  110.195207][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  110.195334][   T12]  process_one_work (kernel/workqueue.c:3314)
[  110.195467][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  110.199247][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  110.199420][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  110.199549][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  110.199669][   T12]  kthread (kernel/kthread.c:436)
[  110.199760][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  110.199908][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  110.200032][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  110.200151][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  110.200306][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  110.200433][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  110.200552][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  110.222049][  T210] ------------[ cut here ]------------
| [  110.222205][  T210] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: unshare/210
| [  110.222479][  T210] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  110.222943][  T210] Tainted: [W]=WARN
[  110.223047][  T210] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  110.223209][  T210] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  110.223386][  T210] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  110.223852][  T210] RSP: 0018:ffa00000007f7ab0 EFLAGS: 00010286
[  110.224015][  T210] RAX: 00000000ffffffa6 RBX: ff1100000b12fe00 RCX: 1ff40000000fef1c
[  110.224206][  T210] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b12febc
[  110.224410][  T210] RBP: ff1100000b1bc000 R08: 1fe2200001625fd9 R09: ff1100000a2a0b90
[  110.224603][  T210] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[  110.224793][  T210] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000b1bc000
[  110.224987][  T210] FS:  00007f3f07022740(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[  110.225215][  T210] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.225383][  T210] CR2: 00007f3f071e4280 CR3: 0000000001dd2003 CR4: 0000000000771ef0
[  110.225581][  T210] PKRU: 55555554
[  110.225678][  T210] Call Trace:
[  110.225775][  T210]  <TASK>
[  110.225841][  T210]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  110.225973][  T210]  ? notifier_call_chain (kernel/notifier.c:85)
[  110.226103][  T210]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  110.226200][  T210]  register_netdevice (net/core/dev.c:11488)
[  110.226336][  T210]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[  110.226504][  T210]  register_netdev (net/core/dev.c:11552)
[  110.226634][  T210]  loopback_net_init (drivers/net/loopback.c:218)
[  110.226764][  T210]  ops_init (net/core/net_namespace.c:137)
[  110.226862][  T210]  setup_net (net/core/net_namespace.c:446)
[  110.226961][  T210]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[  110.227088][  T210]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[  110.227216][  T210]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[  110.227357][  T210]  copy_net_ns (net/core/net_namespace.c:579)
[  110.227492][  T210]  create_new_namespaces (kernel/nsproxy.c:132)
[  110.227623][  T210]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[  110.227754][  T210]  ksys_unshare (kernel/fork.c:3243)
[  110.227883][  T210]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[  110.228015][  T210]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[  110.228145][  T210]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[  110.228274][  T210]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  110.228411][  T210]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  110.228538][  T210]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  110.228668][  T210]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  110.228827][  T210] RIP: 0033:0x7f3f0711dbcb
[  110.228961][  T210] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  110.229427][  T210] RSP: 002b:00007ffef8883bb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  110.229619][  T210] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3f0711dbcb
[  110.229812][  T210] RDX: 0000000000000000 RSI: 00007ffef8883920 RDI: 0000000040000000
[  110.230001][  T210] RBP: 00007ffef8883f40 R08: 00007ffef8883b10 R09: 0000000000000000
[  110.230193][  T210] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  110.230388][  T210] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000559ede820b68
| [  110.244895][  T210] ------------[ cut here ]------------
| [  110.245038][  T210] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/210
| [  110.245278][  T210] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  110.245750][  T210] Tainted: [W]=WARN
[  110.245840][  T210] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  110.245992][  T210] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  110.246150][  T210] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  110.246591][  T210] RSP: 0018:ffa00000007f7b58 EFLAGS: 00010286
[  110.246745][  T210] RAX: 00000000ffffffa6 RBX: ff1100000b12f000 RCX: 1ff40000000fef31
[  110.246923][  T210] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b12f0bc
[  110.247104][  T210] RBP: ff1100000db54000 R08: 1fe2200001625e19 R09: ff1100000a2a0b68
[  110.247285][  T210] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[  110.247473][  T210] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000db54000
[  110.247655][  T210] FS:  0000000021586400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[  110.247865][  T210] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.248017][  T210] CR2: 00007f6a32e4c000 CR3: 0000000008e3e004 CR4: 0000000000771ef0
[  110.248200][  T210] PKRU: 55555554
[  110.248293][  T210] Call Trace:
[  110.248389][  T210]  <TASK>
[  110.248456][  T210]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  110.248579][  T210]  ? notifier_call_chain (kernel/notifier.c:85)
[  110.248701][  T210]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  110.248794][  T210]  register_netdevice (net/core/dev.c:11488)
[  110.248916][  T210]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[  110.249066][  T210]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[  110.249190][  T210] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[  110.249351][  T210]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[  110.249504][  T210]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[  110.249627][  T210] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[  110.249748][  T210]  ? build_open_flags (fs/open.c:1212)
[  110.249870][  T210]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[  110.249991][  T210]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  110.250113][  T210]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[  110.250233][  T210]  ? fput_close_sync (fs/file_table.c:615)
[  110.250379][  T210]  ? __ia32_sys_open (fs/open.c:1374)
[  110.250509][  T210]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  110.250632][  T210]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  110.250752][  T210]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  110.250872][  T210]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  110.250993][  T210]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  110.251145][  T210] RIP: 0033:0x47cc8d
[  110.251241][  T210] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  110.251681][  T210] RSP: 002b:00007ffd06377c20 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  110.251865][  T210] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  110.252046][  T210] RDX: 00007ffd06377ca0 RSI: 00000000400454ca RDI: 0000000000000006
[  110.252227][  T210] RBP: 00007ffd06377c70 R08: 0000000000000000 R09: 0000000000000000
[  110.252417][  T210] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd06378178
[  110.252602][  T210] R13: 00007ffd063781b8 R14: 0000000000000002 R15: 0000000000543540
| [  110.254190][  T210] ------------[ cut here ]------------
| [  110.254310][  T210] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/210
| [  110.254551][  T210] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  110.254998][  T210] Tainted: [W]=WARN
[  110.255086][  T210] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  110.255233][  T210] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  110.255392][  T210] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  110.255818][  T210] RSP: 0018:ffa00000007f7c58 EFLAGS: 00010286
[  110.255965][  T210] RAX: 00000000ffffffa6 RBX: ff1100000b12e580 RCX: 1ff40000000fef51
[  110.256142][  T210] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b12e63c
[  110.256323][  T210] RBP: ff1100000db54000 R08: 1fe2200001625cc9 R09: ff1100000a2a0b68
[  110.256502][  T210] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
[  110.256676][  T210] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000003
[  110.256859][  T210] FS:  0000000021586400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[  110.257064][  T210] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.257211][  T210] CR2: 00007f6a32e4c000 CR3: 0000000008e3e004 CR4: 0000000000771ef0
[  110.257397][  T210] PKRU: 55555554
[  110.257488][  T210] Call Trace:
[  110.257576][  T210]  <TASK>
[  110.257638][  T210]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  110.257757][  T210]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  110.257877][  T210]  notifier_call_chain (kernel/notifier.c:85)
[  110.257998][  T210]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[  110.258116][  T210]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[  110.258264][  T210] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[  110.258391][  T210]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[  110.258517][  T210]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[  110.258639][  T210]  ? update_socket_protocol+0x10/0x10
[  110.258756][  T210]  ? alloc_file_clone (fs/file_table.c:477)
[  110.258875][  T210]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  110.258993][  T210]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  110.259111][  T210]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  110.259228][  T210]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  110.259354][  T210]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  110.259506][  T210] RIP: 0033:0x47cc8d
[  110.259599][  T210] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  110.260016][  T210] RSP: 002b:00007ffd06377c60 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  110.260192][  T210] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  110.260378][  T210] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[  110.260560][  T210] RBP: 00007ffd06377cb0 R08: 0000000000000005 R09: 0000000000001ff0
[  110.260740][  T210] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffd06378178
[  110.260927][  T210] R13: 00007ffd063781b8 R14: 0000000000000002 R15: 0000000000543540
| [  110.262530][  T210] ------------[ cut here ]------------
| [  110.262654][  T210] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: packetdrill/210
| [  110.262895][  T210] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  110.263365][  T210] Tainted: [W]=WARN
[  110.263464][  T210] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  110.263617][  T210] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  110.263780][  T210] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  110.264220][  T210] RSP: 0018:ffa00000007f7850 EFLAGS: 00010286
[  110.264382][  T210] RAX: 00000000ffffffa6 RBX: ff1100000b12eac0 RCX: 1ff40000000feed0
[  110.264572][  T210] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b12eb7c
[  110.264758][  T210] RBP: ff1100000db54000 R08: 1fe2200001625d71 R09: ff1100000a2a0b68
[  110.264944][  T210] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000001
[  110.265126][  T210] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000005882c00
[  110.265315][  T210] FS:  0000000021586400(0000) GS:ff110000a792c000(0000) knlGS:0000000000000000
[  110.265540][  T210] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.265695][  T210] CR2: 00007f6a32e4c000 CR3: 0000000008e3e004 CR4: 0000000000771ef0
[  110.265881][  T210] PKRU: 55555554
[  110.265974][  T210] Call Trace:
[  110.266066][  T210]  <TASK>
[  110.266131][  T210]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  110.266257][  T210]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  110.266357][  T210]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  110.266486][  T210]  __dev_notify_flags (net/core/dev.c:9787)
[  110.266613][  T210]  ? netif_change_name (net/core/dev.c:1495)
[  110.266738][  T210]  ? __dev_change_flags (net/core/dev.c:9752)
[  110.266866][  T210]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[  110.266993][  T210]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  110.267118][  T210]  netif_change_flags (net/core/dev.c:9820)
[  110.267244][  T210]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[  110.267376][  T210]  dev_change_flags (net/core/dev_api.c:68)
[  110.267506][  T210]  devinet_ioctl (net/ipv4/devinet.c:1199)
[  110.267637][  T210]  ? inet_ifa_byprefix (net/ipv4/devinet.c:619 (discriminator 9))
[  110.267761][  T210]  ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18)
[  110.267888][  T210]  inet_ioctl (net/ipv4/af_inet.c:1011)
[  110.267982][  T210]  ? inet_dgram_connect (net/ipv4/af_inet.c:589)
[  110.268108][  T210]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  110.268236][  T210]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[  110.268368][  T210]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[  110.268499][  T210]  sock_do_ioctl (net/socket.c:1313)
[  110.268625][  T210]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[  110.268751][  T210]  ? ioctl_file_clone (fs/ioctl.c:244)
[  110.268878][  T210]  sock_ioctl (net/socket.c:1434)
[  110.268974][  T210]  ? br_ioctl_call (net/socket.c:1279)
[  110.269099][  T210]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[  110.269226][  T210]  ? update_socket_protocol+0x10/0x10
[  110.269353][  T210]  ? alloc_file_clone (fs/file_table.c:477)
[  110.269484][  T210]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  110.269609][  T210]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  110.269733][  T210]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  110.269857][  T210]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  110.269984][  T210]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  110.270137][  T210] RIP: 0033:0x47cc8d
[  110.270234][  T210] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  110.270685][  T210] RSP: 002b:00007ffd06377c40 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  110.270871][  T210] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  110.271055][  T210] RDX: 00007ffd06377cb0 RSI: 0000000000008914 RDI: 0000000000000007
[  110.271239][  T210] RBP: 00007ffd06377c90 R08: 0000000000000005 R09: 0000000000001ff0
[  110.271432][  T210] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffd06378178
[  110.271617][  T210] R13: 00007ffd063781b8 R14: 0000000000000002 R15: 0000000000543540
| [  120.208062][  T210] ------------[ cut here ]------------
| [  120.208298][  T210] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/210
| [  120.209258][  T210] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  120.211313][  T210] Tainted: [W]=WARN
[  120.212234][  T210] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  120.212999][  T210] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  120.213182][  T210] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  120.213703][  T210] RSP: 0018:ffa00000007f76e8 EFLAGS: 00010286
[  120.213879][  T210] RAX: 00000000ffffffa6 RBX: ff11000004c043c0 RCX: 1ff40000000feea3
[  120.214085][  T210] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000004c0447c
[  120.214291][  T210] RBP: ff1100000db54000 R08: 1fe2200000980891 R09: ff1100000a2a0b68
[  120.214528][  T210] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000041
[  120.214737][  T210] R13: 0000000000000000 R14: 0000000000000000 R15: ffa00000007f7780
[  120.214943][  T210] FS:  0000000000000000(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[  120.215185][  T210] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.215365][  T210] CR2: 0000555f7647cd5c CR3: 000000002af39003 CR4: 0000000000771ef0
[  120.215605][  T210] PKRU: 55555554
[  120.215707][  T210] Call Trace:
[  120.215809][  T210]  <TASK>
[  120.215882][  T210]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  120.216023][  T210]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  120.216129][  T210]  netif_close_many (net/core/dev.c:1804)
[  120.216270][  T210]  ? asym_cpu_capacity_scan (./include/linux/rculist.h:103)
[  120.216418][  T210]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  120.216555][  T210]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  120.216708][  T210]  ? __dev_close_many (net/core/dev.c:1781)
[  120.216847][  T210]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[  120.217019][  T210]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  120.217190][  T210]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[  120.217327][  T210]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  120.217505][  T210]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  120.217643][  T210]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  120.217782][  T210]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  120.217937][  T210]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[  120.218078][  T210]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[  120.218227][  T210]  ? unregister_netdevice_many (net/core/dev.c:12497)
[  120.218370][  T210]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  120.218514][  T210]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[  120.218653][  T210] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  120.218797][  T210] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  120.218938][  T210]  __fput (fs/file_table.c:510)
[  120.219048][  T210]  task_work_run (kernel/task_work.c:233)
[  120.219184][  T210]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  120.219319][  T210]  ? task_work_cancel (kernel/task_work.c:190)
[  120.219466][  T210]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[  120.219606][  T210]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  120.219712][  T210]  ? exit_notify (kernel/exit.c:748)
[  120.219847][  T210]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  120.219982][  T210]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  120.220141][  T210]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  120.220281][  T210]  do_group_exit (kernel/exit.c:1119)
[  120.220428][  T210]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  120.220598][  T210]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  120.220733][  T210]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[  120.220869][  T210]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[  120.221016][  T210]  get_signal (kernel/signal.c:3037)
[  120.221155][  T210]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[  120.221292][  T210]  ? __ia32_sys_getpeername (net/socket.c:2219)
[  120.221437][  T210]  ? _copy_to_user (./include/linux/instrumented.h:129 ./include/linux/uaccess.h:205 lib/usercopy.c:26)
[  120.221576][  T210]  ? ptrace_signal (./include/linux/signal.h:87)
[  120.221714][  T210]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  120.221852][  T210]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[  120.221991][  T210]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.222130][  T210]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  120.222299][  T210]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  120.222448][  T210]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.222584][  T210]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[  120.222722][  T210]  ? irq_exit_rcu (kernel/softirq.c:754)
[  120.222857][  T210]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  120.223026][  T210] RIP: 0033:0x4c2d9e
[  120.223137][  T210] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[  120.223312][  T210] RSP: 002b:00007ffd063775d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  120.223531][  T210] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[  120.223736][  T210] RDX: 0000000000000014 RSI: 00007ffd063776b0 RDI: 0000000000000008
[  120.223940][  T210] RBP: 00007ffd063775e0 R08: 00007ffd06377670 R09: 000000000000000c
[  120.224143][  T210] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd06378178
[  120.224350][  T210] R13: 00007ffd063781b8 R14: 00007ffd063777a0 R15: 0000000000543540
| [  120.238173][  T210] ------------[ cut here ]------------
| [  120.238347][  T210] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/210
| [  120.238616][  T210] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  120.239122][  T210] Tainted: [W]=WARN
[  120.239222][  T210] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  120.239424][  T210] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  120.239609][  T210] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  120.240092][  T210] RSP: 0018:ffa00000007f7818 EFLAGS: 00010286
[  120.240261][  T210] RAX: 00000000ffffffa6 RBX: ff11000004c05380 RCX: 1ff40000000feec9
[  120.240469][  T210] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000004c0543c
[  120.240664][  T210] RBP: ff1100000db54000 R08: 1fe2200000980a89 R09: ff1100000a2a0b68
[  120.240861][  T210] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[  120.241055][  T210] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  120.241248][  T210] FS:  0000000000000000(0000) GS:ff110000a77ac000(0000) knlGS:0000000000000000
[  120.241488][  T210] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.241652][  T210] CR2: 0000555f7647cd5c CR3: 000000002af39003 CR4: 0000000000771ef0
[  120.241848][  T210] PKRU: 55555554
[  120.241946][  T210] Call Trace:
[  120.242044][  T210]  <TASK>
[  120.242113][  T210]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  120.242281][  T210]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  120.242463][  T210]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  120.242600][  T210]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  120.242740][  T210]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  120.242878][  T210]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[  120.243018][  T210]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[  120.243156][  T210]  ? unregister_netdevice_many (net/core/dev.c:12497)
[  120.243289][  T210]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  120.243430][  T210]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[  120.243569][  T210] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  120.243709][  T210] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  120.243844][  T210]  __fput (fs/file_table.c:510)
[  120.243948][  T210]  task_work_run (kernel/task_work.c:233)
[  120.244084][  T210]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  120.244221][  T210]  ? task_work_cancel (kernel/task_work.c:190)
[  120.244360][  T210]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[  120.244498][  T210]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  120.244597][  T210]  ? exit_notify (kernel/exit.c:748)
[  120.244729][  T210]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  120.244862][  T210]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  120.244991][  T210]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  120.245124][  T210]  do_group_exit (kernel/exit.c:1119)
[  120.245262][  T210]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  120.245437][  T210]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  120.245565][  T210]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[  120.245697][  T210]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[  120.245829][  T210]  get_signal (kernel/signal.c:3037)
[  120.245965][  T210]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[  120.246100][  T210]  ? __ia32_sys_getpeername (net/socket.c:2219)
[  120.246231][  T210]  ? _copy_to_user (./include/linux/instrumented.h:129 ./include/linux/uaccess.h:205 lib/usercopy.c:26)
[  120.246363][  T210]  ? ptrace_signal (./include/linux/signal.h:87)
[  120.246500][  T210]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  120.246648][  T210]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[  120.246783][  T210]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.246914][  T210]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  120.247097][  T210]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  120.247228][  T210]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.247384][  T210]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[  120.247528][  T210]  ? irq_exit_rcu (kernel/softirq.c:754)
[  120.247666][  T210]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  120.247836][  T210] RIP: 0033:0x4c2d9e
[  120.247945][  T210] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[  120.248113][  T210] RSP: 002b:00007ffd063775d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  120.248309][  T210] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[  120.248513][  T210] RDX: 0000000000000014 RSI: 00007ffd063776b0 RDI: 0000000000000008
[  120.248707][  T210] RBP: 00007ffd063775e0 R08: 00007ffd06377670 R09: 000000000000000c
[  120.248900][  T210] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd06378178
[  120.249117][  T210] R13: 00007ffd063781b8 R14: 00007ffd063777a0 R15: 0000000000543540
| [  120.266971][   T12] ------------[ cut here ]------------
| [  120.267164][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: 0/12
| [  120.267491][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  120.268051][   T12] Tainted: [W]=WARN
[  120.268185][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  120.268465][   T12] Workqueue: netns cleanup_net
[  120.268648][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  120.268850][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  120.269314][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[  120.269537][   T12] RAX: 00000000ffffffa6 RBX: ff1100000b1cbc40 RCX: 1ff4000000018ed5
[  120.269761][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b1cbcfc
[  120.270003][   T12] RBP: ff1100000b1bc000 R08: 1fe22000016397a1 R09: ff11000001afd260
[  120.270238][   T12] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[  120.270491][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  120.270715][   T12] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[  120.270981][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.271175][   T12] CR2: 00007fe4ae0e86f0 CR3: 000000002af39002 CR4: 0000000000771ef0
[  120.271418][   T12] PKRU: 55555554
[  120.271558][   T12] Call Trace:
[  120.271693][   T12]  <TASK>
[  120.271801][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  120.272034][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  120.272239][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[  120.272466][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  120.272652][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[  120.272830][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[  120.273007][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[  120.273184][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[  120.273365][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[  120.273557][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  120.273738][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[  120.273910][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  120.274085][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  120.274257][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  120.274452][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  120.274680][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  120.274872][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.275050][   T12]  process_one_work (kernel/workqueue.c:3314)
[  120.275225][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  120.275416][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  120.275600][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  120.275786][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  120.275967][   T12]  kthread (kernel/kthread.c:436)
[  120.276110][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  120.276315][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  120.276513][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  120.276682][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  120.276897][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  120.277070][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  120.277238][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  120.300257][  T212] ------------[ cut here ]------------
| [  120.301064][  T212] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: unshare/212
| [  120.301324][  T212] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  120.301883][  T212] Tainted: [W]=WARN
[  120.301981][  T212] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  120.302144][  T212] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  120.302315][  T212] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  120.302867][  T212] RSP: 0018:ffa0000000587ab0 EFLAGS: 00010286
[  120.303030][  T212] RAX: 00000000ffffffa6 RBX: ff1100000b1ca580 RCX: 1ff40000000b0f1c
[  120.303225][  T212] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b1ca63c
[  120.303511][  T212] RBP: ff110000091e9000 R08: 1fe22000016394c9 R09: ff1100000c4ad210
[  120.303707][  T212] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[  120.303900][  T212] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000091e9000
[  120.304096][  T212] FS:  00007fb1cb07d740(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  120.304325][  T212] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.304597][  T212] CR2: 00005607e1133008 CR3: 000000000a3a4003 CR4: 0000000000771ef0
[  120.304795][  T212] PKRU: 55555554
[  120.304893][  T212] Call Trace:
[  120.304989][  T212]  <TASK>
[  120.305056][  T212]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  120.305187][  T212]  ? notifier_call_chain (kernel/notifier.c:85)
[  120.305318][  T212]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  120.305491][  T212]  register_netdevice (net/core/dev.c:11488)
[  120.305623][  T212]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[  120.305788][  T212]  register_netdev (net/core/dev.c:11552)
[  120.305917][  T212]  loopback_net_init (drivers/net/loopback.c:218)
[  120.306048][  T212]  ops_init (net/core/net_namespace.c:137)
[  120.306148][  T212]  setup_net (net/core/net_namespace.c:446)
[  120.306246][  T212]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[  120.306380][  T212]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[  120.306554][  T212]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[  120.306686][  T212]  copy_net_ns (net/core/net_namespace.c:579)
[  120.306816][  T212]  create_new_namespaces (kernel/nsproxy.c:132)
[  120.306949][  T212]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[  120.307081][  T212]  ksys_unshare (kernel/fork.c:3243)
[  120.307211][  T212]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[  120.307351][  T212]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[  120.307487][  T212]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[  120.307616][  T212]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  120.307746][  T212]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  120.307876][  T212]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  120.308025][  T212]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  120.308186][  T212] RIP: 0033:0x7fb1cb178bcb
[  120.308323][  T212] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  120.308799][  T212] RSP: 002b:00007ffed9ab6958 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  120.308995][  T212] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb1cb178bcb
[  120.309188][  T212] RDX: 0000000000000000 RSI: 00007ffed9ab66c0 RDI: 0000000040000000
[  120.309386][  T212] RBP: 00007ffed9ab6ce0 R08: 00007ffed9ab68b0 R09: 0000000000000000
[  120.309583][  T212] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  120.309777][  T212] R13: 0000000000000000 R14: 00000000ffffffff R15: 00005607ce84ab68
| [  120.318774][  T212] ------------[ cut here ]------------
| [  120.318911][  T212] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/212
| [  120.319152][  T212] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  120.319630][  T212] Tainted: [W]=WARN
[  120.319723][  T212] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  120.319875][  T212] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  120.320036][  T212] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  120.320477][  T212] RSP: 0018:ffa0000000587b58 EFLAGS: 00010286
[  120.320631][  T212] RAX: 00000000ffffffa6 RBX: ff11000009508e40 RCX: 1ff40000000b0f31
[  120.320816][  T212] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000009508efc
[  120.320997][  T212] RBP: ff11000004b78000 R08: 1fe22000012a11e1 R09: ff1100000c4ad1e8
[  120.321180][  T212] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[  120.321385][  T212] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000004b78000
[  120.321585][  T212] FS:  000000001150f400(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  120.321801][  T212] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.321954][  T212] CR2: 00007efdca0c9000 CR3: 000000000a041004 CR4: 0000000000771ef0
[  120.322138][  T212] PKRU: 55555554
[  120.322230][  T212] Call Trace:
[  120.322322][  T212]  <TASK>
[  120.322391][  T212]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  120.322522][  T212]  ? notifier_call_chain (kernel/notifier.c:85)
[  120.322646][  T212]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  120.322740][  T212]  register_netdevice (net/core/dev.c:11488)
[  120.322865][  T212]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[  120.323017][  T212]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[  120.323141][  T212] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) tun
[  120.323299][  T212]  ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) tun
[  120.323463][  T212]  ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) tun
[  120.323587][  T212] __tun_chr_ioctl (drivers/net/tun.c:3157) tun
[  120.323711][  T212]  ? build_open_flags (fs/open.c:1212)
[  120.323837][  T212]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[  120.323962][  T212]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  120.324086][  T212]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[  120.324209][  T212]  ? fput_close_sync (fs/file_table.c:615)
[  120.324336][  T212]  ? __ia32_sys_open (fs/open.c:1374)
[  120.324465][  T212]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  120.324590][  T212]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  120.324712][  T212]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  120.324837][  T212]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  120.324970][  T212]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  120.325138][  T212] RIP: 0033:0x47cc8d
[  120.325236][  T212] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  120.325683][  T212] RSP: 002b:00007ffe0fab3480 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  120.325868][  T212] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  120.326054][  T212] RDX: 00007ffe0fab3500 RSI: 00000000400454ca RDI: 0000000000000006
[  120.326235][  T212] RBP: 00007ffe0fab34d0 R08: 0000000000000000 R09: 0000000000000000
[  120.326428][  T212] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe0fab39d8
[  120.326610][  T212] R13: 00007ffe0fab3a18 R14: 0000000000000002 R15: 0000000000543540
| [  120.353770][  T213] ------------[ cut here ]------------
| [  120.353950][  T213] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: ifconfig/213
| [  120.354241][  T213] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  120.354799][  T213] Tainted: [W]=WARN
[  120.354941][  T213] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  120.355142][  T213] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  120.355359][  T213] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  120.355859][  T213] RSP: 0018:ffa00000006e7850 EFLAGS: 00010286
[  120.356061][  T213] RAX: 00000000ffffffa6 RBX: ff11000009509000 RCX: 1ff40000000dced0
[  120.356291][  T213] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000095090bc
[  120.356541][  T213] RBP: ff11000004b78000 R08: 1fe22000012a1219 R09: ff11000008d351e8
[  120.356776][  T213] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000000
[  120.357038][  T213] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[  120.357271][  T213] FS:  00007feb5d6c8740(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[  120.357552][  T213] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.357754][  T213] CR2: 0000557593cec5fa CR3: 000000000c75e005 CR4: 0000000000771ef0
[  120.357991][  T213] PKRU: 55555554
[  120.358130][  T213] Call Trace:
[  120.358269][  T213]  <TASK>
[  120.358388][  T213]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.358571][  T213]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  120.358746][  T213]  notifier_call_chain (kernel/notifier.c:85)
[  120.358921][  T213]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[  120.359092][  T213]  ? dev_validate_mtu (net/core/dev.c:9842 (discriminator 2))
[  120.359268][  T213]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  120.359459][  T213]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[  120.359632][  T213]  netif_set_mtu (net/core/dev.c:9910)
[  120.359817][  T213]  ? netif_set_mtu_ext (net/core/dev.c:9847 (discriminator 2))
[  120.359992][  T213]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  120.360161][  T213]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.360339][  T213]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.360523][  T213]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[  120.360698][  T213]  dev_set_mtu (net/core/dev_api.c:249)
[  120.360840][  T213]  dev_ifsioc (net/core/dev_ioctl.c:562)
[  120.361013][  T213]  ? mark_usage (kernel/locking/lockdep.c:4674)
[  120.361183][  T213]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[  120.361361][  T213]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[  120.361547][  T213]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  120.361715][  T213]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  120.361891][  T213]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  120.362062][  T213]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[  120.362203][  T213]  dev_ioctl (net/core/dev_ioctl.c:816)
[  120.362351][  T213]  sock_do_ioctl (net/socket.c:1327)
[  120.362534][  T213]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 6))
[  120.362706][  T213]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[  120.362877][  T213]  ? __handle_mm_fault (mm/memory.c:6443 mm/memory.c:6565)
[  120.363049][  T213]  ? ioctl_file_clone (fs/ioctl.c:244)
[  120.363224][  T213]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[  120.363416][  T213]  sock_ioctl (net/socket.c:1434)
[  120.363557][  T213]  ? br_ioctl_call (net/socket.c:1279)
[  120.363729][  T213]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  120.363900][  T213]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  120.364071][  T213]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  120.364246][  T213]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  120.364442][  T213]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  120.364614][  T213]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  120.364786][  T213]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  120.364958][  T213]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  120.365161][  T213] RIP: 0033:0x7feb5d7be5fd
[  120.365345][  T213] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  120.365844][  T213] RSP: 002b:00007ffc69e45700 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  120.366079][  T213] RAX: ffffffffffffffda RBX: 00007ffc69e4781d RCX: 00007feb5d7be5fd
[  120.366310][  T213] RDX: 00007ffc69e457b0 RSI: 0000000000008922 RDI: 0000000000000008
[  120.366561][  T213] RBP: 00007ffc69e45750 R08: 0000000000000000 R09: 00007ffc69e47821
[  120.366795][  T213] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc69e45ae8
[  120.367026][  T213] R13: 0000000000000004 R14: 00007feb5d90c000 R15: 0000557593cea918
| [  120.370459][  T212] ------------[ cut here ]------------
| [  120.370593][  T212] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/212
| [  120.370828][  T212] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  120.371284][  T212] Tainted: [W]=WARN
[  120.371381][  T212] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  120.371534][  T212] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  120.371690][  T212] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  120.372112][  T212] RSP: 0018:ffa0000000587c58 EFLAGS: 00010286
[  120.372263][  T212] RAX: 00000000ffffffa6 RBX: ff110000095091c0 RCX: 1ff40000000b0f51
[  120.372453][  T212] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000950927c
[  120.372630][  T212] RBP: ff11000004b78000 R08: 1fe22000012a1251 R09: ff1100000c4ad1e8
[  120.372811][  T212] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
[  120.372986][  T212] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000001
[  120.373163][  T212] FS:  000000001150f400(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  120.373373][  T212] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.373530][  T212] CR2: 00007efdca0c9000 CR3: 000000000a041004 CR4: 0000000000771ef0
[  120.373708][  T212] PKRU: 55555554
[  120.373797][  T212] Call Trace:
[  120.373885][  T212]  <TASK>
[  120.373947][  T212]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.374066][  T212]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  120.374187][  T212]  notifier_call_chain (kernel/notifier.c:85)
[  120.374309][  T212]  netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096)
[  120.374444][  T212]  ? netdev_sync_lower_features (net/core/dev.c:10883)
[  120.374594][  T212] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[  120.374717][  T212]  ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) tun
[  120.374837][  T212]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[  120.374959][  T212]  ? update_socket_protocol+0x10/0x10
[  120.375079][  T212]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.375199][  T212]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  120.375321][  T212]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  120.375610][  T212]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  120.375730][  T212]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  120.375850][  T212]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  120.375996][  T212] RIP: 0033:0x47cc8d
[  120.376090][  T212] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  120.376529][  T212] RSP: 002b:00007ffe0fab34c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  120.376707][  T212] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  120.376884][  T212] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[  120.377062][  T212] RBP: 00007ffe0fab3510 R08: 0000000000000021 R09: 0000000011510450
[  120.377239][  T212] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffe0fab39d8
[  120.377429][  T212] R13: 00007ffe0fab3a18 R14: 0000000000000002 R15: 0000000000543540
| [  120.379105][  T212] ------------[ cut here ]------------
| [  120.379226][  T212] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/212
| [  120.379478][  T212] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  120.379951][  T212] Tainted: [W]=WARN
[  120.380045][  T212] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  120.380199][  T212] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  120.380365][  T212] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  120.380813][  T212] RSP: 0018:ffa0000000587910 EFLAGS: 00010286
[  120.380968][  T212] RAX: 00000000ffffffa6 RBX: ff11000009509540 RCX: 1ff40000000b0ee8
[  120.381151][  T212] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000095095fc
[  120.381340][  T212] RBP: ff11000004b78000 R08: 1fe22000012a12c1 R09: ff1100000c4ad1e8
[  120.381538][  T212] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
[  120.381727][  T212] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000000010d1
[  120.381914][  T212] FS:  000000001150f400(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  120.382132][  T212] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.382289][  T212] CR2: 00007efdca0c9000 CR3: 000000000a041004 CR4: 0000000000771ef0
[  120.382487][  T212] PKRU: 55555554
[  120.382580][  T212] Call Trace:
[  120.382673][  T212]  <TASK>
[  120.382738][  T212]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  120.382866][  T212]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  120.382964][  T212]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  120.383089][  T212]  __dev_notify_flags (net/core/dev.c:9787)
[  120.383217][  T212]  ? netif_change_name (net/core/dev.c:1495)
[  120.383342][  T212]  ? __dev_change_flags (net/core/dev.c:9752)
[  120.383479][  T212]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[  120.383604][  T212]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  120.383729][  T212]  ? dev_ioctl (./include/linux/rtnetlink.h:130 net/core/dev_ioctl.c:815)
[  120.383856][  T212]  netif_change_flags (net/core/dev.c:9820)
[  120.383982][  T212]  dev_change_flags (net/core/dev_api.c:68)
[  120.384109][  T212]  dev_ifsioc (net/core/dev_ioctl.c:555)
[  120.384234][  T212]  ? mark_usage (kernel/locking/lockdep.c:4674)
[  120.384363][  T212]  ? dev_set_hwtstamp (net/core/dev_ioctl.c:434)
[  120.384493][  T212]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[  120.384619][  T212]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  120.384742][  T212]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  120.384868][  T212]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  120.384994][  T212]  ? dev_load (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/core/dev_ioctl.c:670 (discriminator 2))
[  120.385092][  T212]  dev_ioctl (net/core/dev_ioctl.c:816)
[  120.385187][  T212]  sock_do_ioctl (net/socket.c:1327)
[  120.385312][  T212]  ? __sock_recv_cmsgs (./include/net/sock.h:2867 net/socket.c:1117)
[  120.385452][  T212]  ? ioctl_file_clone (fs/ioctl.c:244)
[  120.385580][  T212]  sock_ioctl (net/socket.c:1434)
[  120.385675][  T212]  ? br_ioctl_call (net/socket.c:1279)
[  120.385801][  T212]  ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1))
[  120.385928][  T212]  ? update_socket_protocol+0x10/0x10
[  120.386054][  T212]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  120.386180][  T212]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  120.386306][  T212]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  120.386440][  T212]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  120.386565][  T212]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  120.386689][  T212]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  120.386845][  T212] RIP: 0033:0x47cc8d
[  120.386943][  T212] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
All code
========
   0:	04 25                	add    $0x25,%al
   2:	28 00                	sub    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	48 89 45 c8          	mov    %rax,-0x38(%rbp)
   a:	31 c0                	xor    %eax,%eax
   c:	48 8d 45 10          	lea    0x10(%rbp),%rax
  10:	c7 45 b0 10 00 00 00 	movl   $0x10,-0x50(%rbp)
  17:	48 89 45 b8          	mov    %rax,-0x48(%rbp)
  1b:	48 8d 45 d0          	lea    -0x30(%rbp),%rax
  1f:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
  23:	b8 10 00 00 00       	mov    $0x10,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  31:	77 1a                	ja     0x4d
  33:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
  37:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  3e:	00 00 

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   7:	77 1a                	ja     0x23
   9:	48 8b 45 c8          	mov    -0x38(%rbp),%rax
   d:	64 48 2b 04 25 28 00 	sub    %fs:0x28,%rax
  14:	00 00 
[  120.387397][  T212] RSP: 002b:00007ffe0fab34a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  120.387591][  T212] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  120.387782][  T212] RDX: 00007ffe0fab3510 RSI: 0000000000008914 RDI: 0000000000000007
[  120.387969][  T212] RBP: 00007ffe0fab34f0 R08: 0000000000000021 R09: 0000000011510450
[  120.388157][  T212] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffe0fab39d8
[  120.388345][  T212] R13: 00007ffe0fab3a18 R14: 0000000000000002 R15: 0000000000543540
| [  130.285959][  T212] ------------[ cut here ]------------
| [  130.286171][  T212] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/212
| [  130.286982][  T212] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  130.287569][  T212] Tainted: [W]=WARN
[  130.287671][  T212] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  130.287840][  T212] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  130.288016][  T212] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  130.288557][  T212] RSP: 0018:ffa00000005876e8 EFLAGS: 00010286
[  130.288731][  T212] RAX: 00000000ffffffa6 RBX: ff11000010e29540 RCX: 1ff40000000b0ea3
[  130.288930][  T212] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000010e295fc
[  130.289130][  T212] RBP: ff11000004b78000 R08: 1fe22000021c52c1 R09: ff1100000c4ad1e8
[  130.289332][  T212] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000041
[  130.289593][  T212] R13: 0000000000000000 R14: 0000000000000000 R15: ffa0000000587780
[  130.289796][  T212] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  130.290033][  T212] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  130.290203][  T212] CR2: 00007efdca0c9000 CR3: 000000002af39005 CR4: 0000000000771ef0
[  130.290469][  T212] PKRU: 55555554
[  130.290571][  T212] Call Trace:
[  130.290673][  T212]  <TASK>
[  130.290743][  T212]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  130.290880][  T212]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  130.290983][  T212]  netif_close_many (net/core/dev.c:1804)
[  130.291120][  T212]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  130.291256][  T212]  ? __dev_close_many (net/core/dev.c:1781)
[  130.291397][  T212]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[  130.291622][  T212]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  130.291791][  T212]  ? select_fallback_rq (kernel/sched/sched.h:1383)
[  130.291926][  T212]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  130.292091][  T212]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  130.292225][  T212]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  130.292358][  T212]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  130.292555][  T212]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[  130.292694][  T212]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[  130.292829][  T212]  ? unregister_netdevice_many (net/core/dev.c:12497)
[  130.292962][  T212]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  130.293099][  T212]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[  130.293235][  T212] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  130.293379][  T212] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  130.293569][  T212]  __fput (fs/file_table.c:510)
[  130.293676][  T212]  task_work_run (kernel/task_work.c:233)
[  130.293811][  T212]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  130.293948][  T212]  ? task_work_cancel (kernel/task_work.c:190)
[  130.294085][  T212]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[  130.294221][  T212]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  130.294325][  T212]  ? exit_notify (kernel/exit.c:748)
[  130.294519][  T212]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  130.294657][  T212]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  130.294790][  T212]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  130.294925][  T212]  do_group_exit (kernel/exit.c:1119)
[  130.295059][  T212]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  130.295225][  T212]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  130.295359][  T212]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[  130.295552][  T212]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[  130.295684][  T212]  get_signal (kernel/signal.c:3037)
[  130.295823][  T212]  ? ptrace_signal (./include/linux/signal.h:87)
[  130.295958][  T212]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  130.296093][  T212]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[  130.296226][  T212]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  130.296366][  T212]  ? alloc_file_clone (fs/file_table.c:477)
[  130.296556][  T212]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  130.296693][  T212]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  130.296860][  T212]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  130.296993][  T212]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  130.297127][  T212]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[  130.297261][  T212]  ? irq_exit_rcu (kernel/softirq.c:754)
[  130.297399][  T212]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  130.297622][  T212] RIP: 0033:0x47fb83
[  130.297731][  T212] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[  130.297904][  T212] RSP: 002b:00007ffe0fab2f70 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  130.298108][  T212] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[  130.298308][  T212] RDX: 000000000000000e RSI: 312111ccd3731a6e RDI: 0000000000000008
[  130.298571][  T212] RBP: 00007ffe0fab3470 R08: 0000000000000041 R09: 0000000011510450
[  130.298770][  T212] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[  130.298973][  T212] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [  130.309574][  T212] ------------[ cut here ]------------
| [  130.309720][  T212] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/212
| [  130.309980][  T212] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  130.310483][  T212] Tainted: [W]=WARN
[  130.310580][  T212] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  130.310748][  T212] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  130.310917][  T212] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  130.311381][  T212] RSP: 0018:ffa0000000587818 EFLAGS: 00010286
[  130.311551][  T212] RAX: 00000000ffffffa6 RBX: ff11000004bfd1c0 RCX: 1ff40000000b0ec9
[  130.311744][  T212] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000004bfd27c
[  130.311941][  T212] RBP: ff11000004b78000 R08: 1fe220000097fa51 R09: ff1100000c4ad1e8
[  130.312138][  T212] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[  130.312331][  T212] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  130.312533][  T212] FS:  0000000000000000(0000) GS:ff110000a782c000(0000) knlGS:0000000000000000
[  130.312761][  T212] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  130.312922][  T212] CR2: 00007efdca0c9000 CR3: 000000002af39005 CR4: 0000000000771ef0
[  130.313115][  T212] PKRU: 55555554
[  130.313212][  T212] Call Trace:
[  130.313309][  T212]  <TASK>
[  130.313379][  T212]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  130.313547][  T212]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  130.313708][  T212]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  130.313840][  T212]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  130.313972][  T212]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  130.314104][  T212]  ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2))
[  130.314235][  T212]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[  130.314369][  T212]  ? unregister_netdevice_many (net/core/dev.c:12497)
[  130.314503][  T212]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  130.314634][  T212]  ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6))
[  130.314764][  T212] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  130.314896][  T212] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  130.315024][  T212]  __fput (fs/file_table.c:510)
[  130.315126][  T212]  task_work_run (kernel/task_work.c:233)
[  130.315255][  T212]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  130.315387][  T212]  ? task_work_cancel (kernel/task_work.c:190)
[  130.315521][  T212]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377)
[  130.315653][  T212]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  130.315752][  T212]  ? exit_notify (kernel/exit.c:748)
[  130.315881][  T212]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  130.316011][  T212]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  130.316138][  T212]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  130.316267][  T212]  do_group_exit (kernel/exit.c:1119)
[  130.316405][  T212]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  130.316563][  T212]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  130.316693][  T212]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[  130.316820][  T212]  ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[  130.316947][  T212]  get_signal (kernel/signal.c:3037)
[  130.317079][  T212]  ? ptrace_signal (./include/linux/signal.h:87)
[  130.317210][  T212]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  130.317341][  T212]  ? get_sigframe_size (arch/x86/kernel/signal.c:233)
[  130.317477][  T212]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  130.317607][  T212]  ? alloc_file_clone (fs/file_table.c:477)
[  130.317734][  T212]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  130.317863][  T212]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  130.318023][  T212]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  130.318154][  T212]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  130.318283][  T212]  do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100)
[  130.318422][  T212]  ? irq_exit_rcu (kernel/softirq.c:754)
[  130.318550][  T212]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  130.318709][  T212] RIP: 0033:0x47fb83
[  130.318811][  T212] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[  130.318977][  T212] RSP: 002b:00007ffe0fab2f70 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  130.319172][  T212] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[  130.319369][  T212] RDX: 000000000000000e RSI: 312111ccd3731a6e RDI: 0000000000000008
[  130.319565][  T212] RBP: 00007ffe0fab3470 R08: 0000000000000041 R09: 0000000011510450
[  130.319759][  T212] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[  130.319950][  T212] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [  130.333080][   T12] ------------[ cut here ]------------
| [  130.333251][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: 0/12
| [  130.333566][   T12] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  130.334105][   T12] Tainted: [W]=WARN
[  130.334240][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  130.334452][   T12] Workqueue: netns cleanup_net
[  130.334628][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  130.334838][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 88 e9 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 88 e9 f0 ff       	call   0xfffffffffff0e9c4
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 88 e9 f0 ff       	call   0xfffffffffff0e99a
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  130.335310][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[  130.335524][   T12] RAX: 00000000ffffffa6 RBX: ff11000004bfc740 RCX: 1ff4000000018ed5
[  130.335750][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000004bfc7fc
[  130.335970][   T12] RBP: ff110000091e9000 R08: 1fe220000097f901 R09: ff11000001afd260
[  130.336193][   T12] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[  130.336436][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  130.336665][   T12] FS:  0000000000000000(0000) GS:ff110000a78ac000(0000) knlGS:0000000000000000
[  130.336917][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  130.337111][   T12] CR2: 00007feb5d78c2a0 CR3: 000000002af39002 CR4: 0000000000771ef0
[  130.337334][   T12] PKRU: 55555554
[  130.337486][   T12] Call Trace:
[  130.337625][   T12]  <TASK>
[  130.337732][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  130.337932][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  130.338129][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[  130.338298][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  130.338487][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[  130.338651][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[  130.338822][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[  130.338987][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[  130.339151][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[  130.339350][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  130.339548][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[  130.339721][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  130.339889][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  130.340055][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  130.340221][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  130.340393][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  130.340571][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  130.340738][   T12]  process_one_work (kernel/workqueue.c:3314)
[  130.340911][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  130.341076][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  130.341245][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  130.341440][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  130.341608][   T12]  kthread (kernel/kthread.c:436)
[  130.341746][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  130.341941][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  130.342107][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  130.342274][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  130.342490][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  130.342661][   T12]  ? kthread_affine_node (kernel/kthread.c:378)


Finger prints:
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:netif_close_many:unregister_netdevice_many_notify:unregister_netdevice_queue
rtmsg_ifinfo_build_skb:rtnetlink_event:notifier_call_chain:netdev_update_features:__tun_chr_ioctl
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:__dev_notify_flags:netif_change_flags:dev_change_flags
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:default_device_exit_batch:ops_undo_list:cleanup_net
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:unregister_netdevice_queue:__tun_detach:tun_chr_close
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:__tun_chr_ioctl:__x64_sys_ioctl
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:register_netdev:loopback_net_init
rtmsg_ifinfo_build_skb:rtnetlink_event:notifier_call_chain:netif_set_mtu_ext:netif_set_mtu