======================================
| [    2.377510] ------------[ cut here ]------------
| [    2.377566] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/173
| [    2.377631] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [    2.377734] Tainted: [W]=WARN
[    2.377755] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.377790] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.377819] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.377908] RSP: 0018:ff5579a48026bcc0 EFLAGS: 00010286
[    2.377935] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.377974] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074f00
[    2.378013] RBP: 0000000000000000 R08: ff422c928324d210 R09: ff422c9286ef602c
[    2.378061] R10: ff422c9286ef1120 R11: fefefefefefefeff R12: 0000000000000000
[    2.378104] R13: 0000000000000010 R14: ff422c9286ef1000 R15: ff422c9283074f00
[    2.378155] FS:  00007f4379434740(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[    2.378198] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.378233] CR2: 000055655ba20310 CR3: 0000000004457006 CR4: 0000000000771ef0
[    2.378272] PKRU: 55555554
[    2.378292] Call Trace:
[    2.378310]  <TASK>
[    2.378324]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.378347]  register_netdevice (net/core/dev.c:11488)
[    2.378372]  register_netdev (net/core/dev.c:11552)
[    2.378395]  loopback_net_init (drivers/net/loopback.c:218)
[    2.378421]  ops_init (net/core/net_namespace.c:137)
[    2.378446]  setup_net (net/core/net_namespace.c:446)
[    2.378468]  copy_net_ns (net/core/net_namespace.c:579)
[    2.378488]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.378520]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.378553]  ksys_unshare (kernel/fork.c:3243)
[    2.378582]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.378607]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.378633]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    2.378656]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.378686] RIP: 0033:0x7f437952fbcb
[    2.378708] 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
[    2.378809] RSP: 002b:00007ffd37cf0278 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.378855] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f437952fbcb
[    2.378890] RDX: 0000000000000000 RSI: 00007ffd37ceffe0 RDI: 0000000040000000
[    2.378935] RBP: 00007ffd37cf0600 R08: 00007ffd37cf01d0 R09: 0000000000000000
[    2.378976] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.379018] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055655ba23b68
| [    2.379981] ------------[ cut here ]------------
| [    2.380011] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/173
| [    2.380068] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [    2.380175] Tainted: [W]=WARN
[    2.380195] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.380233] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.380262] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.380355] RSP: 0018:ff5579a48026bd68 EFLAGS: 00010286
[    2.380385] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.380428] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074f00
[    2.380470] RBP: 0000000000000000 R08: ff422c928307bbd0 R09: ff422c9287713030
[    2.380509] R10: ff422c9284650120 R11: fefefefefefefeff R12: 0000000000000000
[    2.380555] R13: 0000000000000010 R14: ff422c9284650000 R15: ff422c9283074f00
[    2.380596] FS:  0000000007ef8400(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[    2.380639] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.380673] CR2: 00007fcb6db6a000 CR3: 0000000006ed0001 CR4: 0000000000771ef0
[    2.380715] PKRU: 55555554
[    2.380729] Call Trace:
[    2.380743]  <TASK>
[    2.380758]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.380782]  register_netdevice (net/core/dev.c:11488)
[    2.380803] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[    2.380834]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.380856]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.380880]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    2.380901]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.380927] RIP: 0033:0x47cc8d
[    2.380947] 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 
[    2.381041] RSP: 002b:00007fff757ee280 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.381087] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[    2.381127] RDX: 00007fff757ee300 RSI: 00000000400454ca RDI: 0000000000000006
[    2.381171] RBP: 00007fff757ee2d0 R08: 0000000000000000 R09: 0000000000000000
[    2.381215] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff757ee7d8
[    2.381256] R13: 00007fff757ee818 R14: 0000000000000002 R15: 0000000000543540
| [    2.381354] ------------[ cut here ]------------
| [    2.381381] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/173
| [    2.381431] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [    2.381522] Tainted: [W]=WARN
[    2.381543] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.381583] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.381613] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.381717] RSP: 0018:ff5579a48026bd60 EFLAGS: 00010286
[    2.381742] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.381790] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074f00
[    2.381834] RBP: 0000000000000002 R08: ff422c928307bbd0 R09: ff422c9287713030
[    2.381876] R10: ff422c9284650120 R11: fefefefefefefeff R12: 0000000000000000
[    2.381915] R13: 0000000000000010 R14: ff422c9284650000 R15: ff422c9283074f00
[    2.381952] FS:  0000000007ef8400(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[    2.381992] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.382024] CR2: 00007fcb6db6a000 CR3: 0000000006ed0001 CR4: 0000000000771ef0
[    2.382068] PKRU: 55555554
[    2.382082] Call Trace:
[    2.382094]  <TASK>
[    2.382109]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.382130]  notifier_call_chain (kernel/notifier.c:85)
[    2.382164]  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)
[    2.382200] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[    2.382230]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.382253]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.382273]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    2.382294]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.382325] RIP: 0033:0x47cc8d
[    2.382349] 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 
[    2.382441] RSP: 002b:00007fff757ee2c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.382481] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[    2.382522] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[    2.382564] RBP: 00007fff757ee310 R08: 0000000000000000 R09: 0000000000000000
[    2.382607] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff757ee7d8
[    2.382646] R13: 00007fff757ee818 R14: 0000000000000002 R15: 0000000000543540
| [    2.382748] ------------[ cut here ]------------
| [    2.382775] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/173
| [    2.382824] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [    2.382923] Tainted: [W]=WARN
[    2.382946] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.382981] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.383009] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.383109] RSP: 0018:ff5579a48026bc10 EFLAGS: 00010286
[    2.383140] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.383183] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074f00
[    2.383223] RBP: 0000000000000000 R08: ff422c928307bbd0 R09: ff422c9287710030
[    2.383260] R10: ff422c9284650120 R11: fefefefefefefeff R12: 0000000000000000
[    2.383300] R13: 0000000000000010 R14: ff422c9284650000 R15: ff422c9283074f00
[    2.383342] FS:  0000000007ef8400(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[    2.383377] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.383414] CR2: 00007fcb6db6a000 CR3: 0000000006ed0001 CR4: 0000000000771ef0
[    2.383457] PKRU: 55555554
[    2.383470] Call Trace:
[    2.383486]  <TASK>
[    2.383504]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.383526]  __dev_notify_flags (net/core/dev.c:9787)
[    2.383553]  netif_change_flags (net/core/dev.c:9820)
[    2.383574]  dev_change_flags (net/core/dev_api.c:68)
[    2.383598]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.383622]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.383643]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.383668]  sock_do_ioctl (net/socket.c:1313)
[    2.383691]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.383716]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.383738]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    2.383759]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.383787] RIP: 0033:0x47cc8d
[    2.383810] 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 
[    2.383896] RSP: 002b:00007fff757ee2a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.383934] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[    2.383976] RDX: 00007fff757ee310 RSI: 0000000000008914 RDI: 0000000000000007
[    2.384014] RBP: 00007fff757ee2f0 R08: 0000000000000000 R09: 0000000000000000
[    2.384058] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff757ee7d8
[    2.384102] R13: 00007fff757ee818 R14: 0000000000000002 R15: 0000000000543540
| [   12.376032] ------------[ cut here ]------------
| [   12.376125] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/173
| [   12.376192] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   12.376304] Tainted: [W]=WARN
[   12.376327] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.376359] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   12.376389] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   12.376483] RSP: 0018:ff5579a48026bb50 EFLAGS: 00010286
[   12.376511] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   12.376551] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074b00
[   12.376592] RBP: 0000000000000000 R08: ff422c928307bbd0 R09: ff422c9287710030
[   12.376628] R10: ff422c9284650120 R11: fefefefefefefeff R12: 0000000000000000
[   12.376670] R13: 0000000000000010 R14: ff422c9284650000 R15: ff422c9283074b00
[   12.376717] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   12.376760] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.376794] CR2: 00007fcb6db6a000 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   12.376835] PKRU: 55555554
[   12.376850] Call Trace:
[   12.376864]  <TASK>
[   12.376879]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   12.376902]  netif_close_many (net/core/dev.c:1804)
[   12.376924]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   12.376951]  ? __queue_work (kernel/workqueue.c:2401)
[   12.376975]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   12.377007] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   12.377029] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   12.377053]  __fput (fs/file_table.c:510)
[   12.377082]  task_work_run (kernel/task_work.c:233)
[   12.377111]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   12.377136]  do_group_exit (kernel/exit.c:1119)
[   12.377158]  get_signal (kernel/signal.c:3037)
[   12.377185]  ? move_addr_to_user (./include/linux/uaccess.h:236 net/socket.c:302)
[   12.377209]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   12.377241]  ? __sys_getsockname (net/socket.c:2210)
[   12.377264]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   12.377294]  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)
[   12.377320]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[   12.377349]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.377378] RIP: 0033:0x47e81b
[   12.377401] Code: Unable to access opcode bytes at 0x47e7f1.

Code starting with the faulting instruction
===========================================
[   12.377432] RSP: 002b:00007fff757edd28 EFLAGS: 00000246 ORIG_RAX: 0000000000000033
[   12.377476] RAX: 0000000000000000 RBX: 00007fff757ede00 RCX: 000000000047e81b
[   12.377514] RDX: 00007fff757edd38 RSI: 00007fff757edd3c RDI: 0000000000000008
[   12.377554] RBP: 00007fff757edd60 R08: 0000000000000041 R09: 0000000007ef9450
[   12.377594] R10: 0000000000000040 R11: 0000000000000246 R12: 00007fff757ee7d8
[   12.377635] R13: 00007fff757ee818 R14: 00007fff757ee2d8 R15: 0000000000543540
| [   12.377775] ------------[ cut here ]------------
| [   12.377804] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/173
| [   12.377854] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   12.377949] Tainted: [W]=WARN
[   12.377967] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.378002] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   12.378028] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   12.378120] RSP: 0018:ff5579a48026bbc0 EFLAGS: 00010286
[   12.378150] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   12.378190] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074b00
[   12.378234] RBP: 0000000000000000 R08: ff422c928307bbd0 R09: ff422c9286efa030
[   12.378279] R10: ff422c9284650120 R11: fefefefefefefeff R12: 0000000000000000
[   12.378315] R13: 0000000000000011 R14: ff422c9284650000 R15: ff422c9283074b00
[   12.378357] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   12.378397] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.378428] CR2: 00007fcb6db6a000 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   12.378472] PKRU: 55555554
[   12.378487] Call Trace:
[   12.378502]  <TASK>
[   12.378518]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   12.378546]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   12.378577] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   12.378601] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   12.378621]  __fput (fs/file_table.c:510)
[   12.378643]  task_work_run (kernel/task_work.c:233)
[   12.378661]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   12.378684]  do_group_exit (kernel/exit.c:1119)
[   12.378704]  get_signal (kernel/signal.c:3037)
[   12.378726]  ? move_addr_to_user (./include/linux/uaccess.h:236 net/socket.c:302)
[   12.378753]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   12.378782]  ? __sys_getsockname (net/socket.c:2210)
[   12.378804]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   12.378832]  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)
[   12.378854]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[   12.378880]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.378908] RIP: 0033:0x47e81b
[   12.378929] Code: Unable to access opcode bytes at 0x47e7f1.

Code starting with the faulting instruction
===========================================
[   12.378963] RSP: 002b:00007fff757edd28 EFLAGS: 00000246 ORIG_RAX: 0000000000000033
[   12.379002] RAX: 0000000000000000 RBX: 00007fff757ede00 RCX: 000000000047e81b
[   12.379046] RDX: 00007fff757edd38 RSI: 00007fff757edd3c RDI: 0000000000000008
[   12.379087] RBP: 00007fff757edd60 R08: 0000000000000041 R09: 0000000007ef9450
[   12.379126] R10: 0000000000000040 R11: 0000000000000246 R12: 00007fff757ee7d8
[   12.379169] R13: 00007fff757ee818 R14: 00007fff757ee2d8 R15: 0000000000543540
| [   12.398135] ------------[ cut here ]------------
| [   12.398490] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: 1/65
| [   12.398565] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   12.398679] Tainted: [W]=WARN
[   12.398704] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.398780] Workqueue: netns cleanup_net
[   12.398803] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   12.398837] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   12.398965] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[   12.399023] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   12.399102] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5000
[   12.399177] RBP: 0000000000000000 R08: ff422c928324d210 R09: ff422c9286ee982c
[   12.399250] R10: ff422c9286ef1120 R11: fefefefefefefeff R12: 0000000000000000
[   12.399299] R13: 0000000000000011 R14: ff422c9286ef1000 R15: ff422c9281dd5000
[   12.399338] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   12.399416] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.399508] CR2: 00005601e62e5300 CR3: 0000000022c42001 CR4: 0000000000771ef0
[   12.399593] PKRU: 55555554
[   12.399608] Call Trace:
[   12.399624]  <TASK>
[   12.399640]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   12.399688]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   12.399746]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   12.399783]  cleanup_net (net/core/net_namespace.c:702)
[   12.399804]  process_one_work (kernel/workqueue.c:3314)
[   12.399847]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   12.399886]  ? rescuer_thread (kernel/workqueue.c:3672)
[   12.399922]  kthread (kernel/kthread.c:436)
[   12.399967]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   12.400003]  ret_from_fork (arch/x86/kernel/process.c:158)
[   12.400026]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   12.400069]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   12.403135] ------------[ cut here ]------------
| [   12.403173] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/177
| [   12.403222] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   12.403314] Tainted: [W]=WARN
[   12.403335] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.403365] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   12.403400] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   12.403490] RSP: 0018:ff5579a480337cc0 EFLAGS: 00010286
[   12.403518] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   12.403556] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074b00
[   12.403596] RBP: 0000000000000000 R08: ff422c92831f8a10 R09: ff422c928771402c
[   12.403635] R10: ff422c9287717120 R11: fefefefefefefeff R12: 0000000000000000
[   12.403674] R13: 0000000000000010 R14: ff422c9287717000 R15: ff422c9283074b00
[   12.403718] FS:  00007f97af7dc740(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   12.403763] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.403797] CR2: 00005642ac169008 CR3: 0000000003235006 CR4: 0000000000771ef0
[   12.403835] PKRU: 55555554
[   12.403850] Call Trace:
[   12.403867]  <TASK>
[   12.403883]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   12.403904]  register_netdevice (net/core/dev.c:11488)
[   12.403926]  register_netdev (net/core/dev.c:11552)
[   12.403946]  loopback_net_init (drivers/net/loopback.c:218)
[   12.403968]  ops_init (net/core/net_namespace.c:137)
[   12.403989]  setup_net (net/core/net_namespace.c:446)
[   12.404010]  copy_net_ns (net/core/net_namespace.c:579)
[   12.404031]  create_new_namespaces (kernel/nsproxy.c:132)
[   12.404064]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   12.404092]  ksys_unshare (kernel/fork.c:3243)
[   12.404115]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   12.404137]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   12.404161]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   12.404193]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.404221] RIP: 0033:0x7f97af8d7bcb
[   12.404242] 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
[   12.404333] RSP: 002b:00007ffc58c11a28 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   12.404377] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f97af8d7bcb
[   12.404415] RDX: 0000000000000000 RSI: 00007ffc58c11790 RDI: 0000000040000000
[   12.404453] RBP: 00007ffc58c11db0 R08: 00007ffc58c11980 R09: 0000000000000000
[   12.404493] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   12.404533] R13: 0000000000000000 R14: 00000000ffffffff R15: 00005642a3e08b68
| [   12.405540] ------------[ cut here ]------------
| [   12.405578] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/177
| [   12.405628] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   12.405738] Tainted: [W]=WARN
[   12.405758] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.405796] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   12.405822] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   12.405914] RSP: 0018:ff5579a480337d68 EFLAGS: 00010286
[   12.405947] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   12.405987] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830bff00
[   12.406028] RBP: 0000000000000000 R08: ff422c92831e67d0 R09: ff422c9281e94030
[   12.406077] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   12.406118] R13: 0000000000000010 R14: ff422c9281cec000 R15: ff422c92830bff00
[   12.406162] FS:  000000002c0f1400(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   12.406207] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.406241] CR2: 00007fc204492000 CR3: 0000000006ec5001 CR4: 0000000000771ef0
[   12.406287] PKRU: 55555554
[   12.406301] Call Trace:
[   12.406317]  <TASK>
[   12.406332]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   12.406355]  register_netdevice (net/core/dev.c:11488)
[   12.406377] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[   12.406405]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   12.406428]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   12.406449]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   12.406470]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.406497] RIP: 0033:0x47cc8d
[   12.406516] 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 
[   12.406602] RSP: 002b:00007ffd4503c890 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   12.406639] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   12.406676] RDX: 00007ffd4503c910 RSI: 00000000400454ca RDI: 0000000000000006
[   12.406716] RBP: 00007ffd4503c8e0 R08: 0000000000000000 R09: 0000000000000000
[   12.406755] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd4503cde8
[   12.406801] R13: 00007ffd4503ce28 R14: 0000000000000002 R15: 0000000000543540
| [   12.410520] ------------[ cut here ]------------
| [   12.410584] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: ifconfig/179
| [   12.410672] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   12.410850] Tainted: [W]=WARN
[   12.410909] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.410981] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   12.411049] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   12.411186] RSP: 0018:ff5579a480303c78 EFLAGS: 00010286
[   12.411255] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   12.411334] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e28700
[   12.411412] RBP: 0000000000000000 R08: ff422c92831e67d0 R09: ff422c9282dfc030
[   12.411490] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   12.411567] R13: 0000000000000010 R14: ff422c9281cec000 R15: ff422c9281e28700
[   12.411647] FS:  00007f6f02d95740(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   12.411727] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.411799] CR2: 000056373ccd7717 CR3: 0000000003140001 CR4: 0000000000771ef0
[   12.411877] PKRU: 55555554
[   12.411927] Call Trace:
[   12.411977]  <TASK>
[   12.412027]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   12.412092]  notifier_call_chain (kernel/notifier.c:85)
[   12.412156]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[   12.412222]  ? sk_ioctl (net/core/sock.c:4476 (discriminator 3) net/core/sock.c:4504 (discriminator 3))
[   12.412284]  netif_set_mtu (net/core/dev.c:9910)
[   12.412345]  dev_set_mtu (net/core/dev_api.c:249)
[   12.412407]  dev_ioctl (net/core/dev_ioctl.c:816)
[   12.412469]  sock_do_ioctl (net/socket.c:1327)
[   12.412533]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   12.412594]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   12.412655]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   12.412716]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.412784] RIP: 0033:0x7f6f02e8b5fd
[   12.412846] 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 
[   12.412971] RSP: 002b:00007fff1e439900 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   12.413051] RAX: ffffffffffffffda RBX: 00007fff1e43b857 RCX: 00007f6f02e8b5fd
[   12.413138] RDX: 00007fff1e4399b0 RSI: 0000000000008922 RDI: 0000000000000008
[   12.413219] RBP: 00007fff1e439950 R08: 0000000000000000 R09: 00007fff1e43b85b
[   12.413296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff1e439ce8
[   12.413374] R13: 0000000000000004 R14: 00007f6f02fd9000 R15: 000056373cce7918
| [   12.413673] ------------[ cut here ]------------
| [   12.413711] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/177
| [   12.413762] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   12.413860] Tainted: [W]=WARN
[   12.413882] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.413912] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   12.413943] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   12.414031] RSP: 0018:ff5579a480337d60 EFLAGS: 00010286
[   12.414071] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   12.414109] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830bff00
[   12.414148] RBP: 0000000000000002 R08: ff422c92831e67d0 R09: ff422c9281e94030
[   12.414192] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   12.414231] R13: 0000000000000010 R14: ff422c9281cec000 R15: ff422c92830bff00
[   12.414270] FS:  000000002c0f1400(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   12.414313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.414347] CR2: 00007fc204492000 CR3: 0000000006ec5001 CR4: 0000000000771ef0
[   12.414388] PKRU: 55555554
[   12.414403] Call Trace:
[   12.414417]  <TASK>
[   12.414433]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   12.414457]  notifier_call_chain (kernel/notifier.c:85)
[   12.414478]  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)
[   12.414506] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   12.414534]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   12.414555]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   12.414580]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   12.414603]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.414629] RIP: 0033:0x47cc8d
[   12.414649] 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 
[   12.414735] RSP: 002b:00007ffd4503c8d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   12.414775] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   12.414819] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   12.414861] RBP: 00007ffd4503c920 R08: 0000000000000021 R09: 000000002c0f2450
[   12.414898] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffd4503cde8
[   12.414941] R13: 00007ffd4503ce28 R14: 0000000000000002 R15: 0000000000543540
| [   12.415034] ------------[ cut here ]------------
| [   12.415068] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/177
| [   12.415115] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   12.415211] Tainted: [W]=WARN
[   12.415233] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.415264] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   12.415301] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   12.415391] RSP: 0018:ff5579a480337d30 EFLAGS: 00010286
[   12.415415] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   12.415453] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830bff00
[   12.415493] RBP: 0000000000000000 R08: ff422c92831e67d0 R09: ff422c9282eac030
[   12.415536] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   12.415573] R13: 0000000000000010 R14: ff422c9281cec000 R15: ff422c92830bff00
[   12.415613] FS:  000000002c0f1400(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   12.415660] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.415693] CR2: 00007fc204492000 CR3: 0000000006ec5001 CR4: 0000000000771ef0
[   12.415732] PKRU: 55555554
[   12.415746] Call Trace:
[   12.415758]  <TASK>
[   12.415771]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   12.415792]  __dev_notify_flags (net/core/dev.c:9787)
[   12.415821]  netif_change_flags (net/core/dev.c:9820)
[   12.415843]  dev_change_flags (net/core/dev_api.c:68)
[   12.415863]  dev_ioctl (net/core/dev_ioctl.c:816)
[   12.415883]  sock_do_ioctl (net/socket.c:1327)
[   12.415904]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   12.415924]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   12.415947]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   12.415968]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.415994] RIP: 0033:0x47cc8d
[   12.416013] 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 
[   12.416113] RSP: 002b:00007ffd4503c8b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   12.416153] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   12.416192] RDX: 00007ffd4503c920 RSI: 0000000000008914 RDI: 0000000000000007
[   12.416238] RBP: 00007ffd4503c900 R08: 0000000000000021 R09: 000000002c0f2450
[   12.416276] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffd4503cde8
[   12.416316] R13: 00007ffd4503ce28 R14: 0000000000000002 R15: 0000000000543540
| [   22.402093] ------------[ cut here ]------------
| [   22.402200] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/177
| [   22.402277] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   22.402390] Tainted: [W]=WARN
[   22.402412] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.402446] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   22.402475] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   22.402583] RSP: 0018:ff5579a480337b50 EFLAGS: 00010286
[   22.402613] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   22.402656] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dc9f00
[   22.402699] RBP: 0000000000000000 R08: ff422c92831e67d0 R09: ff422c9282eac030
[   22.402744] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   22.402787] R13: 0000000000000010 R14: ff422c9281cec000 R15: ff422c9281dc9f00
[   22.402836] FS:  0000000000000000(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   22.402882] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.402925] CR2: 00007fc204492000 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   22.402968] PKRU: 55555554
[   22.402983] Call Trace:
[   22.403000]  <TASK>
[   22.403014]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   22.403035]  netif_close_many (net/core/dev.c:1804)
[   22.403252]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   22.403284]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   22.403313] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   22.403339] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   22.403361]  __fput (fs/file_table.c:510)
[   22.403396]  task_work_run (kernel/task_work.c:233)
[   22.403421]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   22.403443]  ? netlink_dump (net/netlink/af_netlink.c:2378)
[   22.403466]  do_group_exit (kernel/exit.c:1119)
[   22.403492]  get_signal (kernel/signal.c:3037)
[   22.403516]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   22.403549]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   22.403582]  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)
[   22.403608]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[   22.403638]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.403666] RIP: 0033:0x4c2d9e
[   22.403688] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   22.403723] RSP: 002b:00007ffd4503c240 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[   22.403763] RAX: 0000000000000050 RBX: 00007ffd4503c2d0 RCX: 00000000004c2d9e
[   22.403804] RDX: 0000000000000000 RSI: 00007ffd4503c2e0 RDI: 0000000000000008
[   22.403848] RBP: 00007ffd4503c250 R08: 0000000000000000 R09: 0000000000000000
[   22.403890] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd4503c2c4
[   22.403927] R13: 00007ffd4503ce28 R14: 00007ffd4503c410 R15: 0000000000543540
| [   22.404092] ------------[ cut here ]------------
| [   22.404119] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/177
| [   22.404159] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   22.404271] Tainted: [W]=WARN
[   22.404292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.404323] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   22.404351] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   22.404441] RSP: 0018:ff5579a480337bc0 EFLAGS: 00010286
[   22.404470] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   22.404509] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dc9f00
[   22.404548] RBP: 0000000000000000 R08: ff422c92831e67d0 R09: ff422c9282004030
[   22.404587] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   22.404626] R13: 0000000000000011 R14: ff422c9281cec000 R15: ff422c9281dc9f00
[   22.404667] FS:  0000000000000000(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   22.404714] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.404747] CR2: 00007fc204492000 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   22.404787] PKRU: 55555554
[   22.404803] Call Trace:
[   22.404817]  <TASK>
[   22.404829]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   22.404860]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   22.404888] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   22.404909] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   22.404930]  __fput (fs/file_table.c:510)
[   22.404952]  task_work_run (kernel/task_work.c:233)
[   22.404974]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   22.404994]  ? netlink_dump (net/netlink/af_netlink.c:2378)
[   22.405015]  do_group_exit (kernel/exit.c:1119)
[   22.405034]  get_signal (kernel/signal.c:3037)
[   22.405058]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   22.405087]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   22.405116]  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)
[   22.405139]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[   22.405165]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.405196] RIP: 0033:0x4c2d9e
[   22.405221] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   22.405256] RSP: 002b:00007ffd4503c240 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[   22.405300] RAX: 0000000000000050 RBX: 00007ffd4503c2d0 RCX: 00000000004c2d9e
[   22.405338] RDX: 0000000000000000 RSI: 00007ffd4503c2e0 RDI: 0000000000000008
[   22.405379] RBP: 00007ffd4503c250 R08: 0000000000000000 R09: 0000000000000000
[   22.405418] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd4503c2c4
[   22.405458] R13: 00007ffd4503ce28 R14: 00007ffd4503c410 R15: 0000000000543540
| [   22.427260] ------------[ cut here ]------------
| [   22.427294] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: 1/65
| [   22.427356] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   22.427467] Tainted: [W]=WARN
[   22.427488] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.427525] Workqueue: netns cleanup_net
[   22.427550] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   22.427579] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   22.427679] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[   22.427710] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   22.427758] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5000
[   22.427799] RBP: 0000000000000000 R08: ff422c92831f8a10 R09: ff422c9286ef882c
[   22.427843] R10: ff422c9287717120 R11: fefefefefefefeff R12: 0000000000000000
[   22.427883] R13: 0000000000000011 R14: ff422c9287717000 R15: ff422c9281dd5000
[   22.427931] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   22.427978] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.428009] CR2: 000055e106b48ef8 CR3: 0000000003343001 CR4: 0000000000771ef0
[   22.428064] PKRU: 55555554
[   22.428081] Call Trace:
[   22.428098]  <TASK>
[   22.428113]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   22.428144]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   22.428176]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   22.428201]  cleanup_net (net/core/net_namespace.c:702)
[   22.428221]  process_one_work (kernel/workqueue.c:3314)
[   22.428246]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   22.428269]  ? rescuer_thread (kernel/workqueue.c:3672)
[   22.428296]  kthread (kernel/kthread.c:436)
[   22.428319]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   22.428354]  ret_from_fork (arch/x86/kernel/process.c:158)
[   22.428383]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   22.428405]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   22.432943] ------------[ cut here ]------------
| [   22.433012] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: unshare/182
| [   22.433112] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   22.433303] Tainted: [W]=WARN
[   22.433361] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.433433] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   22.433501] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   22.433630] RSP: 0018:ff5579a48026bcc0 EFLAGS: 00010286
[   22.433697] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   22.433777] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e28700
[   22.433857] RBP: 0000000000000000 R08: ff422c9283178250 R09: ff422c928467202c
[   22.433936] R10: ff422c9282eaf120 R11: fefefefefefefeff R12: 0000000000000000
[   22.434012] R13: 0000000000000010 R14: ff422c9282eaf000 R15: ff422c9281e28700
[   22.434103] FS:  00007f0b60be9740(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   22.434186] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.434264] CR2: 0000560df60fb008 CR3: 0000000003140004 CR4: 0000000000771ef0
[   22.434360] PKRU: 55555554
[   22.434409] Call Trace:
[   22.434459]  <TASK>
[   22.434509]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   22.434565]  register_netdevice (net/core/dev.c:11488)
[   22.434623]  register_netdev (net/core/dev.c:11552)
[   22.434679]  loopback_net_init (drivers/net/loopback.c:218)
[   22.434738]  ops_init (net/core/net_namespace.c:137)
[   22.434797]  setup_net (net/core/net_namespace.c:446)
[   22.434853]  copy_net_ns (net/core/net_namespace.c:579)
[   22.434909]  create_new_namespaces (kernel/nsproxy.c:132)
[   22.434974]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   22.435038]  ksys_unshare (kernel/fork.c:3243)
[   22.435104]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   22.435161]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   22.435226]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   22.435282]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.435367] RIP: 0033:0x7f0b60ce4bcb
[   22.435423] 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
[   22.435549] RSP: 002b:00007fffca46aaa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   22.435627] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0b60ce4bcb
[   22.435705] RDX: 0000000000000000 RSI: 00007fffca46a810 RDI: 0000000040000000
[   22.435783] RBP: 00007fffca46ae30 R08: 00007fffca46aa00 R09: 0000000000000000
[   22.435861] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   22.435938] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000560dd3bbab68
| [   22.436970] ------------[ cut here ]------------
| [   22.437033] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/182
| [   22.437133] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   22.437340] Tainted: [W]=WARN
[   22.437396] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.437466] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   22.437538] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   22.437672] RSP: 0018:ff5579a48026bd68 EFLAGS: 00010286
[   22.437751] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   22.437830] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e28700
[   22.437909] RBP: 0000000000000000 R08: ff422c92831e6910 R09: ff422c9284677030
[   22.437990] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[   22.438070] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9281e28700
[   22.438148] FS:  00000000094b2400(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   22.438232] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.438305] CR2: 00007fc96b485000 CR3: 00000000045d9005 CR4: 0000000000771ef0
[   22.438383] PKRU: 55555554
[   22.438433] Call Trace:
[   22.438483]  <TASK>
[   22.438535]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   22.438594]  register_netdevice (net/core/dev.c:11488)
[   22.438672] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[   22.438741]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   22.438801]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   22.438859]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   22.438915]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.438979] RIP: 0033:0x47cc8d
[   22.439034] 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 
[   22.439171] RSP: 002b:00007fff40850cc0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   22.439254] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   22.439331] RDX: 00007fff40850d40 RSI: 00000000400454ca RDI: 0000000000000006
[   22.439407] RBP: 00007fff40850d10 R08: 0000000000000000 R09: 0000000000000000
[   22.439482] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff40851218
[   22.439558] R13: 00007fff40851258 R14: 0000000000000002 R15: 0000000000543540
| [   22.439762] ------------[ cut here ]------------
| [   22.439847] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/182
| [   22.439934] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   22.440108] Tainted: [W]=WARN
[   22.440169] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.440261] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   22.440330] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   22.440460] RSP: 0018:ff5579a48026bd60 EFLAGS: 00010286
[   22.440527] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   22.440605] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e28700
[   22.440681] RBP: 0000000000000002 R08: ff422c92831e6910 R09: ff422c9284677030
[   22.440760] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[   22.440840] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9281e28700
[   22.440924] FS:  00000000094b2400(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   22.441007] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.441097] CR2: 00007fc96b485000 CR3: 00000000045d9005 CR4: 0000000000771ef0
[   22.441174] PKRU: 55555554
[   22.441227] Call Trace:
[   22.441274]  <TASK>
[   22.441323]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   22.441380]  notifier_call_chain (kernel/notifier.c:85)
[   22.441438]  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)
[   22.441502] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   22.441567]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   22.441623]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   22.441679]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   22.441736]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.441799] RIP: 0033:0x47cc8d
[   22.441855] 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 
[   22.441989] RSP: 002b:00007fff40850d00 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   22.442074] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   22.442150] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   22.442232] RBP: 00007fff40850d50 R08: 0000000000000000 R09: 0000000000000000
[   22.442307] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff40851218
[   22.442384] R13: 00007fff40851258 R14: 0000000000000002 R15: 0000000000543540
| [   22.442594] ------------[ cut here ]------------
| [   22.442654] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/182
| [   22.442738] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   22.442907] Tainted: [W]=WARN
[   22.442961] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.443030] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   22.443103] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   22.443260] RSP: 0018:ff5579a48026bc10 EFLAGS: 00010286
[   22.443328] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   22.443406] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e28700
[   22.443486] RBP: 0000000000000000 R08: ff422c92831e6910 R09: ff422c9284674030
[   22.443565] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[   22.443642] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9281e28700
[   22.443727] FS:  00000000094b2400(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   22.443809] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.443883] CR2: 00007fc96b485000 CR3: 00000000045d9005 CR4: 0000000000771ef0
[   22.443962] PKRU: 55555554
[   22.444010] Call Trace:
[   22.444068]  <TASK>
[   22.444118]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   22.444181]  __dev_notify_flags (net/core/dev.c:9787)
[   22.444246]  netif_change_flags (net/core/dev.c:9820)
[   22.444307]  dev_change_flags (net/core/dev_api.c:68)
[   22.444369]  devinet_ioctl (net/ipv4/devinet.c:1199)
[   22.444451]  inet_ioctl (net/ipv4/af_inet.c:1011)
[   22.444511]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[   22.444568]  sock_do_ioctl (net/socket.c:1313)
[   22.444625]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   22.444682]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   22.444739]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   22.444795]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.444860] RIP: 0033:0x47cc8d
[   22.444915] 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 
[   22.445046] RSP: 002b:00007fff40850ce0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   22.445129] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   22.445212] RDX: 00007fff40850d50 RSI: 0000000000008914 RDI: 0000000000000007
[   22.445291] RBP: 00007fff40850d30 R08: 0000000000000000 R09: 0000000000000000
[   22.445368] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff40851218
[   22.445445] R13: 00007fff40851258 R14: 0000000000000002 R15: 0000000000543540
| [   32.431838] ------------[ cut here ]------------
| [   32.432017] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/182
| [   32.432115] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   32.432298] Tainted: [W]=WARN
[   32.432352] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.432422] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.432487] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.432620] RSP: 0018:ff5579a48026bb50 EFLAGS: 00010286
[   32.432682] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   32.432759] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5a00
[   32.432838] RBP: 0000000000000000 R08: ff422c92831e6910 R09: ff422c9284674030
[   32.432915] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[   32.432991] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9281dd5a00
[   32.433194] FS:  0000000000000000(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   32.433290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.433359] CR2: 00007fc96b485000 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   32.433439] PKRU: 55555554
[   32.433487] Call Trace:
[   32.433537]  <TASK>
[   32.433586]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   32.433644]  netif_close_many (net/core/dev.c:1804)
[   32.433702]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   32.433768]  ? __queue_work (kernel/workqueue.c:2401)
[   32.433828]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   32.433894] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   32.433952] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   32.434010]  __fput (fs/file_table.c:510)
[   32.434074]  task_work_run (kernel/task_work.c:233)
[   32.434133]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   32.434193]  do_group_exit (kernel/exit.c:1119)
[   32.434256]  ? sk_prot_alloc.isra.0 (net/core/sock.c:2253)
[   32.434319]  ? cgroup_sk_alloc (./include/linux/rcupdate.h:871 ./include/linux/percpu-refcount.h:209 ./include/linux/percpu-refcount.h:222 ./include/linux/cgroup.h:885 kernel/cgroup/cgroup.c:7377)
[   32.434378]  get_signal (kernel/signal.c:3037)
[   32.434435]  ? __d_alloc (fs/dcache.c:1807 (discriminator 11))
[   32.434494]  ? sysvec_reschedule_ipi (./arch/x86/include/asm/apic.h:410 (discriminator 1) arch/x86/kernel/smp.c:251 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1))
[   32.434563]  ? alloc_empty_file (fs/file_table.c:262 (discriminator 11))
[   32.434620]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   32.434686]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   32.434752]  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)
[   32.434810]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.434874] RIP: 0033:0x47ea2b
[   32.434931] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   32.435002] RSP: 002b:00007fff40850768 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[   32.435085] RAX: 0000000000000008 RBX: 00007fff40850840 RCX: 000000000047ea2b
[   32.435164] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   32.435247] RBP: 00007fff408507a0 R08: 0000000000000041 R09: 00000000094b3450
[   32.435324] R10: 0000000000000040 R11: 0000000000000202 R12: 00007fff40851218
[   32.435399] R13: 00007fff40851258 R14: 00007fff40850d18 R15: 0000000000543540
| [   32.435650] ------------[ cut here ]------------
| [   32.435712] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/182
| [   32.435799] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   32.435972] Tainted: [W]=WARN
[   32.436028] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.436103] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.436166] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.436308] RSP: 0018:ff5579a48026bbc0 EFLAGS: 00010286
[   32.436373] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   32.436450] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5a00
[   32.436527] RBP: 0000000000000000 R08: ff422c92831e6910 R09: ff422c928904d030
[   32.436603] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[   32.436680] R13: 0000000000000011 R14: ff422c9284594000 R15: ff422c9281dd5a00
[   32.436761] FS:  0000000000000000(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   32.436837] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.436907] CR2: 00007fc96b485000 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   32.436987] PKRU: 55555554
[   32.437035] Call Trace:
[   32.437088]  <TASK>
[   32.437137]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   32.437201]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   32.437273] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   32.437332] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   32.437390]  __fput (fs/file_table.c:510)
[   32.437447]  task_work_run (kernel/task_work.c:233)
[   32.437505]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   32.437562]  do_group_exit (kernel/exit.c:1119)
[   32.437618]  ? sk_prot_alloc.isra.0 (net/core/sock.c:2253)
[   32.437682]  ? cgroup_sk_alloc (./include/linux/rcupdate.h:871 ./include/linux/percpu-refcount.h:209 ./include/linux/percpu-refcount.h:222 ./include/linux/cgroup.h:885 kernel/cgroup/cgroup.c:7377)
[   32.437739]  get_signal (kernel/signal.c:3037)
[   32.437796]  ? __d_alloc (fs/dcache.c:1807 (discriminator 11))
[   32.437854]  ? sysvec_reschedule_ipi (./arch/x86/include/asm/apic.h:410 (discriminator 1) arch/x86/kernel/smp.c:251 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1))
[   32.437918]  ? alloc_empty_file (fs/file_table.c:262 (discriminator 11))
[   32.437974]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   32.438039]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   32.438278]  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)
[   32.438340]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.438404] RIP: 0033:0x47ea2b
[   32.438459] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   32.438528] RSP: 002b:00007fff40850768 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[   32.438606] RAX: 0000000000000008 RBX: 00007fff40850840 RCX: 000000000047ea2b
[   32.438683] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   32.438759] RBP: 00007fff408507a0 R08: 0000000000000041 R09: 00000000094b3450
[   32.438836] R10: 0000000000000040 R11: 0000000000000202 R12: 00007fff40851218
[   32.438912] R13: 00007fff40851258 R14: 00007fff40850d18 R15: 0000000000543540
| [   32.446111] ------------[ cut here ]------------
| [   32.446147] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: 1/65
| [   32.446212] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   32.446318] Tainted: [W]=WARN
[   32.446338] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.446386] Workqueue: netns cleanup_net
[   32.446411] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.446499] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.446609] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[   32.446641] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   32.446702] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5000
[   32.446809] RBP: 0000000000000000 R08: ff422c9283178250 R09: ff422c9288c8d82c
[   32.446902] R10: ff422c9282eaf120 R11: fefefefefefefeff R12: 0000000000000000
[   32.446966] R13: 0000000000000011 R14: ff422c9282eaf000 R15: ff422c9281dd5000
[   32.447018] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   32.447081] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.447132] CR2: 000055e106b48ef8 CR3: 0000000022c42003 CR4: 0000000000771ef0
[   32.447214] PKRU: 55555554
[   32.447252] Call Trace:
[   32.447277]  <TASK>
[   32.447309]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   32.447358]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   32.447390]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   32.447450]  cleanup_net (net/core/net_namespace.c:702)
[   32.447488]  process_one_work (kernel/workqueue.c:3314)
[   32.447512]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   32.447553]  ? rescuer_thread (kernel/workqueue.c:3672)
[   32.447583]  kthread (kernel/kthread.c:436)
[   32.447608]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   32.447638]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.447683]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   32.447720]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   32.450891] ------------[ cut here ]------------
| [   32.450927] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/184
| [   32.450974] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   32.451087] Tainted: [W]=WARN
[   32.451109] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.451144] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.451172] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.451276] RSP: 0018:ff5579a48026bcc0 EFLAGS: 00010286
[   32.451304] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   32.451347] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[   32.451393] RBP: 0000000000000000 R08: ff422c928324d7d0 R09: ff422c928771602c
[   32.451430] R10: ff422c9287710120 R11: fefefefefefefeff R12: 0000000000000000
[   32.451469] R13: 0000000000000010 R14: ff422c9287710000 R15: ff422c9281e27600
[   32.451504] FS:  00007fb16ad47740(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   32.451551] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.451587] CR2: 00005612af131008 CR3: 0000000003235005 CR4: 0000000000771ef0
[   32.451629] PKRU: 55555554
[   32.451644] Call Trace:
[   32.451658]  <TASK>
[   32.451673]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   32.451698]  register_netdevice (net/core/dev.c:11488)
[   32.451719]  register_netdev (net/core/dev.c:11552)
[   32.451741]  loopback_net_init (drivers/net/loopback.c:218)
[   32.451766]  ops_init (net/core/net_namespace.c:137)
[   32.451787]  setup_net (net/core/net_namespace.c:446)
[   32.451813]  copy_net_ns (net/core/net_namespace.c:579)
[   32.451835]  create_new_namespaces (kernel/nsproxy.c:132)
[   32.451858]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   32.451887]  ksys_unshare (kernel/fork.c:3243)
[   32.451910]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   32.451932]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   32.451955]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   32.451979]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.452010] RIP: 0033:0x7fb16ae42bcb
[   32.452034] 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
[   32.452136] RSP: 002b:00007ffe304e71a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   32.452181] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb16ae42bcb
[   32.452227] RDX: 0000000000000000 RSI: 00007ffe304e6f10 RDI: 0000000040000000
[   32.452270] RBP: 00007ffe304e7530 R08: 00007ffe304e7100 R09: 0000000000000000
[   32.452314] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   32.452357] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000561294515b68
| [   32.453071] ------------[ cut here ]------------
| [   32.453103] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/184
| [   32.453149] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   32.453266] Tainted: [W]=WARN
[   32.453293] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.453330] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.453359] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.453459] RSP: 0018:ff5579a48026bd68 EFLAGS: 00010286
[   32.453489] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   32.453533] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[   32.453577] RBP: 0000000000000000 R08: ff422c9283191090 R09: ff422c9288d9b030
[   32.453618] R10: ff422c928317c120 R11: fefefefefefefeff R12: 0000000000000000
[   32.453661] R13: 0000000000000010 R14: ff422c928317c000 R15: ff422c9281e27600
[   32.453705] FS:  0000000028784400(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   32.453749] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.453784] CR2: 00007f44c0d0f000 CR3: 0000000003146006 CR4: 0000000000771ef0
[   32.453823] PKRU: 55555554
[   32.453837] Call Trace:
[   32.453853]  <TASK>
[   32.453867]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   32.453889]  register_netdevice (net/core/dev.c:11488)
[   32.453912] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[   32.453943]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   32.453965]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   32.453988]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   32.454009]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.454037] RIP: 0033:0x47cc8d
[   32.454059] 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 
[   32.454157] RSP: 002b:00007ffd8e109d70 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   32.454198] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   32.454249] RDX: 00007ffd8e109df0 RSI: 00000000400454ca RDI: 0000000000000006
[   32.454291] RBP: 00007ffd8e109dc0 R08: 0000000000000000 R09: 0000000000000000
[   32.454330] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd8e10a2c8
[   32.454369] R13: 00007ffd8e10a308 R14: 0000000000000002 R15: 0000000000543540
| [   32.458143] ------------[ cut here ]------------
| [   32.458179] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: ifconfig/185
| [   32.458238] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   32.458328] Tainted: [W]=WARN
[   32.458352] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.458386] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.458417] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.458511] RSP: 0018:ff5579a480337c78 EFLAGS: 00010286
[   32.458541] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   32.458581] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830bff00
[   32.458621] RBP: 0000000000000000 R08: ff422c9283191090 R09: ff422c9281e96030
[   32.458662] R10: ff422c928317c120 R11: fefefefefefefeff R12: 0000000000000000
[   32.458709] R13: 0000000000000010 R14: ff422c928317c000 R15: ff422c92830bff00
[   32.458753] FS:  00007f6ffc356740(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   32.458801] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.458839] CR2: 000056306b8e65fa CR3: 00000000033d2006 CR4: 0000000000771ef0
[   32.458872] PKRU: 55555554
[   32.458887] Call Trace:
[   32.458900]  <TASK>
[   32.458912]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   32.458935]  notifier_call_chain (kernel/notifier.c:85)
[   32.458962]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[   32.458982]  ? sk_ioctl (net/core/sock.c:4476 (discriminator 3) net/core/sock.c:4504 (discriminator 3))
[   32.459004]  netif_set_mtu (net/core/dev.c:9910)
[   32.459023]  dev_set_mtu (net/core/dev_api.c:249)
[   32.459046]  dev_ioctl (net/core/dev_ioctl.c:816)
[   32.459075]  sock_do_ioctl (net/socket.c:1327)
[   32.459099]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   32.459123]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   32.459143]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   32.459163]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.459195] RIP: 0033:0x7f6ffc44c5fd
[   32.459222] 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 
[   32.459316] RSP: 002b:00007ffc65eb93c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   32.459350] RAX: ffffffffffffffda RBX: 00007ffc65eba857 RCX: 00007f6ffc44c5fd
[   32.459391] RDX: 00007ffc65eb9470 RSI: 0000000000008922 RDI: 0000000000000008
[   32.459440] RBP: 00007ffc65eb9410 R08: 0000000000000000 R09: 00007ffc65eba85b
[   32.459487] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc65eb97a8
[   32.459530] R13: 0000000000000004 R14: 00007f6ffc59a000 R15: 000056306b8e4918
| [   32.459687] ------------[ cut here ]------------
| [   32.459717] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/184
| [   32.459772] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   32.459869] Tainted: [W]=WARN
[   32.459892] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.459927] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.459957] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.460066] RSP: 0018:ff5579a48026bd60 EFLAGS: 00010286
[   32.460094] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   32.460133] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[   32.460177] RBP: 0000000000000002 R08: ff422c9283191090 R09: ff422c9288d9b030
[   32.460219] R10: ff422c928317c120 R11: fefefefefefefeff R12: 0000000000000000
[   32.460264] R13: 0000000000000010 R14: ff422c928317c000 R15: ff422c9281e27600
[   32.460305] FS:  0000000028784400(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   32.460347] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.460384] CR2: 00007f44c0d0f000 CR3: 0000000003146006 CR4: 0000000000771ef0
[   32.460427] PKRU: 55555554
[   32.460440] Call Trace:
[   32.460454]  <TASK>
[   32.460468]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   32.460488]  notifier_call_chain (kernel/notifier.c:85)
[   32.460509]  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)
[   32.460541] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   32.460568]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   32.460588]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   32.460610]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   32.460633]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.460655] RIP: 0033:0x47cc8d
[   32.460676] 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 
[   32.460774] RSP: 002b:00007ffd8e109db0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   32.460818] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   32.460862] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   32.460905] RBP: 00007ffd8e109e00 R08: 0000000000000021 R09: 0000000028785450
[   32.460944] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffd8e10a2c8
[   32.460985] R13: 00007ffd8e10a308 R14: 0000000000000002 R15: 0000000000543540
| [   32.461086] ------------[ cut here ]------------
| [   32.461112] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/184
| [   32.461163] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   32.461271] Tainted: [W]=WARN
[   32.461293] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.461326] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.461355] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.461447] RSP: 0018:ff5579a48026bd30 EFLAGS: 00010286
[   32.461477] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   32.461516] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[   32.461559] RBP: 0000000000000000 R08: ff422c9283191090 R09: ff422c9288d98030
[   32.461604] R10: ff422c928317c120 R11: fefefefefefefeff R12: 0000000000000000
[   32.461651] R13: 0000000000000010 R14: ff422c928317c000 R15: ff422c9281e27600
[   32.461694] FS:  0000000028784400(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   32.461738] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.461773] CR2: 00007f44c0d0f000 CR3: 0000000003146006 CR4: 0000000000771ef0
[   32.461817] PKRU: 55555554
[   32.461831] Call Trace:
[   32.461845]  <TASK>
[   32.461858]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   32.461880]  __dev_notify_flags (net/core/dev.c:9787)
[   32.461899]  netif_change_flags (net/core/dev.c:9820)
[   32.461922]  dev_change_flags (net/core/dev_api.c:68)
[   32.461943]  dev_ioctl (net/core/dev_ioctl.c:816)
[   32.461965]  sock_do_ioctl (net/socket.c:1327)
[   32.461985]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   32.462006]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   32.462028]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   32.462051]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.462079] RIP: 0033:0x47cc8d
[   32.462102] 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 
[   32.462187] RSP: 002b:00007ffd8e109d90 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   32.462232] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   32.462272] RDX: 00007ffd8e109e00 RSI: 0000000000008914 RDI: 0000000000000007
[   32.462311] RBP: 00007ffd8e109de0 R08: 0000000000000021 R09: 0000000028785450
[   32.462354] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffd8e10a2c8
[   32.462394] R13: 00007ffd8e10a308 R14: 0000000000000002 R15: 0000000000543540
| [   42.449817] ------------[ cut here ]------------
| [   42.449918] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/184
| [   42.449989] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   42.450263] Tainted: [W]=WARN
[   42.450287] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   42.450323] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   42.450354] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   42.450453] RSP: 0018:ff5579a48026bb50 EFLAGS: 00010286
[   42.450483] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   42.450523] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dc9f00
[   42.450568] RBP: 0000000000000000 R08: ff422c9283191090 R09: ff422c9288d98030
[   42.450609] R10: ff422c928317c120 R11: fefefefefefefeff R12: 0000000000000000
[   42.450651] R13: 0000000000000010 R14: ff422c928317c000 R15: ff422c9281dc9f00
[   42.450694] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   42.450737] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.450773] CR2: 00007f44c0d0f000 CR3: 0000000022c42003 CR4: 0000000000771ef0
[   42.450814] PKRU: 55555554
[   42.450827] Call Trace:
[   42.450844]  <TASK>
[   42.450860]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   42.450887]  netif_close_many (net/core/dev.c:1804)
[   42.450914]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   42.450948]  ? __queue_work (kernel/workqueue.c:2401)
[   42.450980]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   42.451009] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   42.451029] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   42.451050]  __fput (fs/file_table.c:510)
[   42.451077]  task_work_run (kernel/task_work.c:233)
[   42.451100]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   42.451125]  do_group_exit (kernel/exit.c:1119)
[   42.451149]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   42.451171]  get_signal (kernel/signal.c:3037)
[   42.451194]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   42.451229]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   42.451262]  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)
[   42.451283]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[   42.451316]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   42.451347] RIP: 0033:0x4c2d9e
[   42.451369] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   42.451401] RSP: 002b:00007ffd8e109720 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   42.451442] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   42.451482] RDX: 0000000000000014 RSI: 00007ffd8e109800 RDI: 0000000000000008
[   42.451525] RBP: 00007ffd8e109730 R08: 00007ffd8e1097c0 R09: 000000000000000c
[   42.451568] R10: 0000000000000000 R11: 0000000000000202 R12: 000000002878ccf0
[   42.451605] R13: 00007ffd8e10a308 R14: 00007ffd8e1098f0 R15: 0000000000543540
| [   42.451766] ------------[ cut here ]------------
| [   42.451796] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/184
| [   42.451850] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   42.451942] Tainted: [W]=WARN
[   42.451962] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   42.451995] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   42.452025] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   42.452127] RSP: 0018:ff5579a48026bbc0 EFLAGS: 00010286
[   42.452154] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   42.452209] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dc9f00
[   42.452256] RBP: 0000000000000000 R08: ff422c9283191090 R09: ff422c9288efd030
[   42.452300] R10: ff422c928317c120 R11: fefefefefefefeff R12: 0000000000000000
[   42.452334] R13: 0000000000000011 R14: ff422c928317c000 R15: ff422c9281dc9f00
[   42.452383] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   42.452424] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.452461] CR2: 00007f44c0d0f000 CR3: 0000000022c42003 CR4: 0000000000771ef0
[   42.452504] PKRU: 55555554
[   42.452517] Call Trace:
[   42.452532]  <TASK>
[   42.452545]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   42.452573]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   42.452603] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   42.452631] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   42.452652]  __fput (fs/file_table.c:510)
[   42.452678]  task_work_run (kernel/task_work.c:233)
[   42.452702]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   42.452724]  do_group_exit (kernel/exit.c:1119)
[   42.452744]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   42.452765]  get_signal (kernel/signal.c:3037)
[   42.452789]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   42.452815]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   42.452843]  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)
[   42.452871]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[   42.452903]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   42.452934] RIP: 0033:0x4c2d9e
[   42.452958] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   42.452989] RSP: 002b:00007ffd8e109720 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   42.453030] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   42.453077] RDX: 0000000000000014 RSI: 00007ffd8e109800 RDI: 0000000000000008
[   42.453122] RBP: 00007ffd8e109730 R08: 00007ffd8e1097c0 R09: 000000000000000c
[   42.453175] R10: 0000000000000000 R11: 0000000000000202 R12: 000000002878ccf0
[   42.453221] R13: 00007ffd8e10a308 R14: 00007ffd8e1098f0 R15: 0000000000543540
| [   42.463107] ------------[ cut here ]------------
| [   42.463143] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: 1/65
| [   42.463221] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   42.463351] Tainted: [W]=WARN
[   42.463373] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   42.463409] Workqueue: netns cleanup_net
[   42.463431] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   42.463460] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   42.463561] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[   42.463589] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   42.463631] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5000
[   42.463673] RBP: 0000000000000000 R08: ff422c928324d7d0 R09: ff422c9288c9582c
[   42.463717] R10: ff422c9287710120 R11: fefefefefefefeff R12: 0000000000000000
[   42.463760] R13: 0000000000000011 R14: ff422c9287710000 R15: ff422c9281dd5000
[   42.463811] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   42.463871] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.463900] CR2: 000055e106b48ef8 CR3: 0000000022c42003 CR4: 0000000000771ef0
[   42.463946] PKRU: 55555554
[   42.463961] Call Trace:
[   42.463977]  <TASK>
[   42.463990]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   42.464021]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   42.464062]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   42.464088]  cleanup_net (net/core/net_namespace.c:702)
[   42.464111]  process_one_work (kernel/workqueue.c:3314)
[   42.464137]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   42.464160]  ? rescuer_thread (kernel/workqueue.c:3672)
[   42.464183]  kthread (kernel/kthread.c:436)
[   42.464208]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   42.464231]  ret_from_fork (arch/x86/kernel/process.c:158)
[   42.464258]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   42.464281]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   42.469540] ------------[ cut here ]------------
| [   42.469573] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/187
| [   42.469626] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   42.469732] Tainted: [W]=WARN
[   42.469756] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   42.469790] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   42.469820] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   42.469914] RSP: 0018:ff5579a48026bcc0 EFLAGS: 00010286
[   42.469943] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   42.469988] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5000
[   42.470028] RBP: 0000000000000000 R08: ff422c92831e6c90 R09: ff422c9282ead02c
[   42.470074] R10: ff422c9281e96120 R11: fefefefefefefeff R12: 0000000000000000
[   42.470115] R13: 0000000000000010 R14: ff422c9281e96000 R15: ff422c9281dd5000
[   42.470158] FS:  00007f12ecf5b740(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   42.470201] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.470229] CR2: 00005575f2698008 CR3: 0000000004604005 CR4: 0000000000771ef0
[   42.470278] PKRU: 55555554
[   42.470293] Call Trace:
[   42.470308]  <TASK>
[   42.470324]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   42.470348]  register_netdevice (net/core/dev.c:11488)
[   42.470369]  register_netdev (net/core/dev.c:11552)
[   42.470388]  loopback_net_init (drivers/net/loopback.c:218)
[   42.470414]  ops_init (net/core/net_namespace.c:137)
[   42.470432]  setup_net (net/core/net_namespace.c:446)
[   42.470454]  copy_net_ns (net/core/net_namespace.c:579)
[   42.470474]  create_new_namespaces (kernel/nsproxy.c:132)
[   42.470503]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   42.470531]  ksys_unshare (kernel/fork.c:3243)
[   42.470556]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   42.470576]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   42.470599]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   42.470623]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   42.470654] RIP: 0033:0x7f12ed056bcb
[   42.470675] 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
[   42.470772] RSP: 002b:00007ffd9b0ef318 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   42.470817] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f12ed056bcb
[   42.470856] RDX: 0000000000000000 RSI: 00007ffd9b0ef080 RDI: 0000000040000000
[   42.470895] RBP: 00007ffd9b0ef6a0 R08: 00007ffd9b0ef270 R09: 0000000000000000
[   42.470940] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   42.470973] R13: 0000000000000000 R14: 00000000ffffffff R15: 00005575b429cb68
| [   42.471836] ------------[ cut here ]------------
| [   42.471867] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/187
| [   42.471920] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   42.472024] Tainted: [W]=WARN
[   42.472045] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   42.472089] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   42.472124] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   42.472226] RSP: 0018:ff5579a48026bd68 EFLAGS: 00010286
[   42.472261] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   42.472304] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5000
[   42.472347] RBP: 0000000000000000 R08: ff422c9283178e50 R09: ff422c9282ea8030
[   42.472392] R10: ff422c92844e8120 R11: fefefefefefefeff R12: 0000000000000000
[   42.472433] R13: 0000000000000010 R14: ff422c92844e8000 R15: ff422c9281dd5000
[   42.472483] FS:  0000000028acd400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   42.472526] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.472559] CR2: 00007f67326df000 CR3: 0000000003226006 CR4: 0000000000771ef0
[   42.472597] PKRU: 55555554
[   42.472611] Call Trace:
[   42.472626]  <TASK>
[   42.472640]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   42.472664]  register_netdevice (net/core/dev.c:11488)
[   42.472686] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[   42.472718]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   42.472742]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   42.472764]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   42.472784]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   42.472812] RIP: 0033:0x47cc8d
[   42.472832] 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 
[   42.472930] RSP: 002b:00007ffc6d11dcf0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   42.472970] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   42.473012] RDX: 00007ffc6d11dd70 RSI: 00000000400454ca RDI: 0000000000000006
[   42.473059] RBP: 00007ffc6d11dd40 R08: 0000000000000000 R09: 0000000000000000
[   42.473103] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc6d11e248
[   42.473142] R13: 00007ffc6d11e288 R14: 0000000000000002 R15: 0000000000543540
| [   42.473249] ------------[ cut here ]------------
| [   42.473278] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/187
| [   42.473332] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   42.473433] Tainted: [W]=WARN
[   42.473453] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   42.473488] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   42.473516] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   42.473624] RSP: 0018:ff5579a48026bd60 EFLAGS: 00010286
[   42.473652] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   42.473696] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5000
[   42.473740] RBP: 0000000000000002 R08: ff422c9283178e50 R09: ff422c9282ea8030
[   42.473779] R10: ff422c92844e8120 R11: fefefefefefefeff R12: 0000000000000000
[   42.473817] R13: 0000000000000010 R14: ff422c92844e8000 R15: ff422c9281dd5000
[   42.473861] FS:  0000000028acd400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   42.473909] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.473943] CR2: 00007f67326df000 CR3: 0000000003226006 CR4: 0000000000771ef0
[   42.473985] PKRU: 55555554
[   42.474000] Call Trace:
[   42.474016]  <TASK>
[   42.474031]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   42.474051]  notifier_call_chain (kernel/notifier.c:85)
[   42.474075]  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)
[   42.474110] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   42.474138]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   42.474158]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   42.474181]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   42.474202]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   42.474232] RIP: 0033:0x47cc8d
[   42.474257] 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 
[   42.474364] RSP: 002b:00007ffc6d11dd30 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   42.474411] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   42.474459] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   42.474506] RBP: 00007ffc6d11dd80 R08: 0000000000000005 R09: 0000000000001ff0
[   42.474552] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffc6d11e248
[   42.474590] R13: 00007ffc6d11e288 R14: 0000000000000002 R15: 0000000000543540
| [   42.474688] ------------[ cut here ]------------
| [   42.474714] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/187
| [   42.474769] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   42.474854] Tainted: [W]=WARN
[   42.474875] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   42.474917] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   42.474948] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   42.475045] RSP: 0018:ff5579a48026bc10 EFLAGS: 00010286
[   42.475076] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   42.475115] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5000
[   42.475156] RBP: 0000000000000000 R08: ff422c9283178e50 R09: ff422c9282eaf030
[   42.475198] R10: ff422c92844e8120 R11: fefefefefefefeff R12: 0000000000000000
[   42.475237] R13: 0000000000000010 R14: ff422c92844e8000 R15: ff422c9281dd5000
[   42.475289] FS:  0000000028acd400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   42.475336] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   42.475373] CR2: 00007f67326df000 CR3: 0000000003226006 CR4: 0000000000771ef0
[   42.475415] PKRU: 55555554
[   42.475431] Call Trace:
[   42.475443]  <TASK>
[   42.475457]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   42.475480]  __dev_notify_flags (net/core/dev.c:9787)
[   42.475502]  netif_change_flags (net/core/dev.c:9820)
[   42.475526]  dev_change_flags (net/core/dev_api.c:68)
[   42.475550]  devinet_ioctl (net/ipv4/devinet.c:1199)
[   42.475577]  inet_ioctl (net/ipv4/af_inet.c:1011)
[   42.475596]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[   42.475616]  sock_do_ioctl (net/socket.c:1313)
[   42.475641]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   42.475664]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   42.475686]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   42.475706]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   42.475732] RIP: 0033:0x47cc8d
[   42.475754] 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 
[   42.475851] RSP: 002b:00007ffc6d11dd10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   42.475893] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   42.475934] RDX: 00007ffc6d11dd80 RSI: 0000000000008914 RDI: 0000000000000007
[   42.475977] RBP: 00007ffc6d11dd60 R08: 0000000000000005 R09: 0000000000001ff0
[   42.476016] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffc6d11e248
[   42.476058] R13: 00007ffc6d11e288 R14: 0000000000000002 R15: 0000000000543540
| [   52.468461] ------------[ cut here ]------------
| [   52.468538] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/187
| [   52.468600] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   52.468719] Tainted: [W]=WARN
[   52.468742] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.468781] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   52.468816] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   52.468918] RSP: 0018:ff5579a48026bb50 EFLAGS: 00010286
[   52.468947] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   52.468989] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   52.469032] RBP: 0000000000000000 R08: ff422c9283178e50 R09: ff422c9282eaf030
[   52.469077] R10: ff422c92844e8120 R11: fefefefefefefeff R12: 0000000000000000
[   52.469116] R13: 0000000000000010 R14: ff422c92844e8000 R15: ff422c92830be000
[   52.469160] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   52.469204] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.469236] CR2: 00007f67326df000 CR3: 0000000022c42003 CR4: 0000000000771ef0
[   52.469288] PKRU: 55555554
[   52.469308] Call Trace:
[   52.469323]  <TASK>
[   52.469342]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   52.469364]  netif_close_many (net/core/dev.c:1804)
[   52.469393]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   52.469427]  ? __queue_work (kernel/workqueue.c:2401)
[   52.469453]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   52.469487] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   52.469512] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   52.469537]  __fput (fs/file_table.c:510)
[   52.469558]  task_work_run (kernel/task_work.c:233)
[   52.469580]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   52.469605]  do_group_exit (kernel/exit.c:1119)
[   52.469627]  get_signal (kernel/signal.c:3037)
[   52.469651]  ? sysvec_reschedule_ipi (./arch/x86/include/asm/apic.h:410 (discriminator 1) arch/x86/kernel/smp.c:251 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1))
[   52.469681]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   52.469707]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   52.469737]  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)
[   52.469761]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[   52.469791]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   52.469818] RIP: 0033:0x4c2d9e
[   52.469842] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   52.469876] RSP: 002b:00007ffc6d11d6a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[   52.469916] RAX: 0000000000000050 RBX: 00007ffc6d11d730 RCX: 00000000004c2d9e
[   52.469961] RDX: 0000000000000000 RSI: 00007ffc6d11d740 RDI: 0000000000000008
[   52.470003] RBP: 00007ffc6d11d6b0 R08: 0000000000000000 R09: 0000000000000000
[   52.470045] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc6d11d724
[   52.470091] R13: 00007ffc6d11e288 R14: 00007ffc6d11d870 R15: 0000000000543540
| [   52.470231] ------------[ cut here ]------------
| [   52.470260] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/187
| [   52.470318] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   52.470421] Tainted: [W]=WARN
[   52.470445] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.470479] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   52.470508] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   52.470602] RSP: 0018:ff5579a48026bbc0 EFLAGS: 00010286
[   52.470630] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   52.470672] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   52.470711] RBP: 0000000000000000 R08: ff422c9283178e50 R09: ff422c928446c030
[   52.470750] R10: ff422c92844e8120 R11: fefefefefefefeff R12: 0000000000000000
[   52.470786] R13: 0000000000000011 R14: ff422c92844e8000 R15: ff422c92830be000
[   52.470835] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   52.470882] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.470917] CR2: 00007f67326df000 CR3: 0000000022c42003 CR4: 0000000000771ef0
[   52.470959] PKRU: 55555554
[   52.470974] Call Trace:
[   52.470988]  <TASK>
[   52.471002]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   52.471032]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   52.471066] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   52.471089] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   52.471108]  __fput (fs/file_table.c:510)
[   52.471131]  task_work_run (kernel/task_work.c:233)
[   52.471154]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   52.471176]  do_group_exit (kernel/exit.c:1119)
[   52.471197]  get_signal (kernel/signal.c:3037)
[   52.471220]  ? sysvec_reschedule_ipi (./arch/x86/include/asm/apic.h:410 (discriminator 1) arch/x86/kernel/smp.c:251 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1))
[   52.471247]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   52.471282]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   52.471308]  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)
[   52.471326]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[   52.471356]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   52.471384] RIP: 0033:0x4c2d9e
[   52.471405] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   52.471438] RSP: 002b:00007ffc6d11d6a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[   52.471482] RAX: 0000000000000050 RBX: 00007ffc6d11d730 RCX: 00000000004c2d9e
[   52.471526] RDX: 0000000000000000 RSI: 00007ffc6d11d740 RDI: 0000000000000008
[   52.471571] RBP: 00007ffc6d11d6b0 R08: 0000000000000000 R09: 0000000000000000
[   52.471611] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc6d11d724
[   52.471659] R13: 00007ffc6d11e288 R14: 00007ffc6d11d870 R15: 0000000000543540
| [   52.484123] ------------[ cut here ]------------
| [   52.484242] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: 1/65
| [   52.484325] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   52.484440] Tainted: [W]=WARN
[   52.484459] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.484493] Workqueue: netns cleanup_net
[   52.484516] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   52.484547] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   52.484643] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[   52.484673] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   52.484716] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be100
[   52.484760] RBP: 0000000000000000 R08: ff422c92831e6c90 R09: ff422c928843c82c
[   52.484804] R10: ff422c9281e96120 R11: fefefefefefefeff R12: 0000000000000000
[   52.484848] R13: 0000000000000011 R14: ff422c9281e96000 R15: ff422c92830be100
[   52.484889] FS:  0000000000000000(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   52.484935] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.484968] CR2: 000055e106b76628 CR3: 0000000022c42003 CR4: 0000000000771ef0
[   52.485012] PKRU: 55555554
[   52.485026] Call Trace:
[   52.485043]  <TASK>
[   52.485069]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   52.485101]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   52.485126]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   52.485151]  cleanup_net (net/core/net_namespace.c:702)
[   52.485173]  process_one_work (kernel/workqueue.c:3314)
[   52.485197]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   52.485223]  ? rescuer_thread (kernel/workqueue.c:3672)
[   52.485245]  kthread (kernel/kthread.c:436)
[   52.485274]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   52.485298]  ret_from_fork (arch/x86/kernel/process.c:158)
[   52.485323]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   52.485342]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   52.488251] ------------[ cut here ]------------
| [   52.488314] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: unshare/189
| [   52.488376] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   52.488497] Tainted: [W]=WARN
[   52.488516] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.488559] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   52.488595] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   52.488710] RSP: 0018:ff5579a48036fcc0 EFLAGS: 00010286
[   52.488748] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   52.488789] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be100
[   52.488836] RBP: 0000000000000000 R08: ff422c928324d7d0 R09: ff422c9282ea902c
[   52.488881] R10: ff422c9286ef4120 R11: fefefefefefefeff R12: 0000000000000000
[   52.488926] R13: 0000000000000010 R14: ff422c9286ef4000 R15: ff422c92830be100
[   52.488993] FS:  00007f2138bd3740(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   52.489049] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.489091] CR2: 000055f880a41008 CR3: 0000000003226005 CR4: 0000000000771ef0
[   52.489141] PKRU: 55555554
[   52.489157] Call Trace:
[   52.489172]  <TASK>
[   52.489191]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   52.489221]  register_netdevice (net/core/dev.c:11488)
[   52.489251]  register_netdev (net/core/dev.c:11552)
[   52.489284]  loopback_net_init (drivers/net/loopback.c:218)
[   52.489308]  ops_init (net/core/net_namespace.c:137)
[   52.489328]  setup_net (net/core/net_namespace.c:446)
[   52.489350]  copy_net_ns (net/core/net_namespace.c:579)
[   52.489378]  create_new_namespaces (kernel/nsproxy.c:132)
[   52.489408]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   52.489445]  ksys_unshare (kernel/fork.c:3243)
[   52.489472]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   52.489493]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   52.489515]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   52.489533]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   52.489557] RIP: 0033:0x7f2138ccebcb
[   52.489576] 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
[   52.489649] RSP: 002b:00007ffeabd78d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   52.489701] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2138ccebcb
[   52.489750] RDX: 0000000000000000 RSI: 00007ffeabd78b00 RDI: 0000000040000000
[   52.489798] RBP: 00007ffeabd79120 R08: 00007ffeabd78cf0 R09: 0000000000000000
[   52.489843] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   52.489901] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055f86e7e3b68
| [   52.490765] ------------[ cut here ]------------
| [   52.490805] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/189
| [   52.490865] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   52.490982] Tainted: [W]=WARN
[   52.491006] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.491049] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   52.491079] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   52.491200] RSP: 0018:ff5579a48036fd68 EFLAGS: 00010286
[   52.491243] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   52.491288] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be100
[   52.491350] RBP: 0000000000000000 R08: ff422c928306d790 R09: ff422c9287712030
[   52.491395] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   52.491440] R13: 0000000000000010 R14: ff422c9281cec000 R15: ff422c92830be100
[   52.491492] FS:  000000000117e400(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   52.491543] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.491576] CR2: 00007f5f9d375000 CR3: 000000000336e006 CR4: 0000000000771ef0
[   52.491618] PKRU: 55555554
[   52.491631] Call Trace:
[   52.491644]  <TASK>
[   52.491660]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   52.491694]  register_netdevice (net/core/dev.c:11488)
[   52.491715] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[   52.491757]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   52.491779]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   52.491814]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   52.491837]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   52.491870] RIP: 0033:0x47cc8d
[   52.491890] 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 
[   52.492019] RSP: 002b:00007ffe4dd6b5c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   52.492071] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   52.492106] RDX: 00007ffe4dd6b640 RSI: 00000000400454ca RDI: 0000000000000006
[   52.492159] RBP: 00007ffe4dd6b610 R08: 0000000000000000 R09: 0000000000000000
[   52.492207] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe4dd6bb18
[   52.492255] R13: 00007ffe4dd6bb58 R14: 0000000000000002 R15: 0000000000543540
| [   52.495592] ------------[ cut here ]------------
| [   52.495652] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: ifconfig/190
| [   52.495738] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   52.495910] Tainted: [W]=WARN
[   52.495964] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.496033] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   52.496103] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   52.496238] RSP: 0018:ff5579a480313c78 EFLAGS: 00010286
[   52.496306] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   52.496382] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5a00
[   52.496458] RBP: 0000000000000000 R08: ff422c928306d790 R09: ff422c9284671030
[   52.496534] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   52.496611] R13: 0000000000000010 R14: ff422c9281cec000 R15: ff422c9281dd5a00
[   52.496690] FS:  00007efea5f52740(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   52.496768] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.496836] CR2: 000055c0696d75fa CR3: 000000000452a006 CR4: 0000000000771ef0
[   52.496914] PKRU: 55555554
[   52.496962] Call Trace:
[   52.497010]  <TASK>
[   52.497065]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   52.497122]  notifier_call_chain (kernel/notifier.c:85)
[   52.497179]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[   52.497236]  ? sk_ioctl (net/core/sock.c:4476 (discriminator 3) net/core/sock.c:4504 (discriminator 3))
[   52.497299]  netif_set_mtu (net/core/dev.c:9910)
[   52.497356]  dev_set_mtu (net/core/dev_api.c:249)
[   52.497413]  dev_ioctl (net/core/dev_ioctl.c:816)
[   52.497471]  sock_do_ioctl (net/socket.c:1327)
[   52.497528]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   52.497585]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   52.497641]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   52.497698]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   52.497762] RIP: 0033:0x7efea60485fd
[   52.497817] 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 
[   52.497953] RSP: 002b:00007ffcb9a80950 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   52.498032] RAX: ffffffffffffffda RBX: 00007ffcb9a82857 RCX: 00007efea60485fd
[   52.498118] RDX: 00007ffcb9a80a00 RSI: 0000000000008922 RDI: 0000000000000008
[   52.498195] RBP: 00007ffcb9a809a0 R08: 0000000000000000 R09: 00007ffcb9a8285b
[   52.498279] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcb9a80d38
[   52.498356] R13: 0000000000000004 R14: 00007efea6196000 R15: 000055c0696d5918
| [   52.498655] ------------[ cut here ]------------
| [   52.498692] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/189
| [   52.498743] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   52.498835] Tainted: [W]=WARN
[   52.498858] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.498890] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   52.498914] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   52.499010] RSP: 0018:ff5579a48036fd60 EFLAGS: 00010286
[   52.499041] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   52.499092] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be100
[   52.499133] RBP: 0000000000000002 R08: ff422c928306d790 R09: ff422c9286ef6030
[   52.499177] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   52.499214] R13: 0000000000000010 R14: ff422c9281cec000 R15: ff422c92830be100
[   52.499258] FS:  000000000117e400(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   52.499306] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.499341] CR2: 00007f5f9d375000 CR3: 000000000336e006 CR4: 0000000000771ef0
[   52.499380] PKRU: 55555554
[   52.499392] Call Trace:
[   52.499403]  <TASK>
[   52.499420]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   52.499441]  notifier_call_chain (kernel/notifier.c:85)
[   52.499464]  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)
[   52.499491] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   52.499522]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   52.499542]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   52.499568]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   52.499594]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   52.499622] RIP: 0033:0x47cc8d
[   52.499643] 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 
[   52.499739] RSP: 002b:00007ffe4dd6b600 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   52.499779] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   52.499824] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   52.499864] RBP: 00007ffe4dd6b650 R08: 0000000000000021 R09: 000000000117f450
[   52.499906] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffe4dd6bb18
[   52.499942] R13: 00007ffe4dd6bb58 R14: 0000000000000002 R15: 0000000000543540
| [   52.500042] ------------[ cut here ]------------
| [   52.500070] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/189
| [   52.500117] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   52.500211] Tainted: [W]=WARN
[   52.500237] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.500278] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   52.500305] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   52.500403] RSP: 0018:ff5579a48036fd30 EFLAGS: 00010286
[   52.500429] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   52.500469] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be100
[   52.500509] RBP: 0000000000000000 R08: ff422c928306d790 R09: ff422c9287713030
[   52.500549] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   52.500588] R13: 0000000000000010 R14: ff422c9281cec000 R15: ff422c92830be100
[   52.500630] FS:  000000000117e400(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   52.500677] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.500712] CR2: 00007f5f9d375000 CR3: 000000000336e006 CR4: 0000000000771ef0
[   52.500755] PKRU: 55555554
[   52.500767] Call Trace:
[   52.500782]  <TASK>
[   52.500795]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   52.500817]  __dev_notify_flags (net/core/dev.c:9787)
[   52.500837]  netif_change_flags (net/core/dev.c:9820)
[   52.500860]  dev_change_flags (net/core/dev_api.c:68)
[   52.500885]  dev_ioctl (net/core/dev_ioctl.c:816)
[   52.500908]  sock_do_ioctl (net/socket.c:1327)
[   52.500930]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   52.500952]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   52.500971]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   52.500991]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   52.501016] RIP: 0033:0x47cc8d
[   52.501038] 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 
[   52.501139] RSP: 002b:00007ffe4dd6b5e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   52.501182] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   52.501225] RDX: 00007ffe4dd6b650 RSI: 0000000000008914 RDI: 0000000000000007
[   52.501270] RBP: 00007ffe4dd6b630 R08: 0000000000000021 R09: 000000000117f450
[   52.501313] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffe4dd6bb18
[   52.501351] R13: 00007ffe4dd6bb58 R14: 0000000000000002 R15: 0000000000543540
| [   62.487013] ------------[ cut here ]------------
| [   62.487289] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/189
| [   62.487359] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   62.487470] Tainted: [W]=WARN
[   62.487493] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   62.487527] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   62.487557] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   62.487652] RSP: 0018:ff5579a48036fb50 EFLAGS: 00010286
[   62.487679] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   62.487718] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   62.487756] RBP: 0000000000000000 R08: ff422c928306d790 R09: ff422c9287710030
[   62.487798] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   62.487839] R13: 0000000000000010 R14: ff422c9281cec000 R15: ff422c92830be000
[   62.487887] FS:  0000000000000000(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   62.487930] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.487968] CR2: 00007f5f9d375000 CR3: 0000000022c42003 CR4: 0000000000771ef0
[   62.488009] PKRU: 55555554
[   62.488023] Call Trace:
[   62.488040]  <TASK>
[   62.488060]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   62.488084]  netif_close_many (net/core/dev.c:1804)
[   62.488109]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   62.488141]  ? __queue_work (kernel/workqueue.c:2401)
[   62.488164]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   62.488197] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   62.488224] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   62.488248]  __fput (fs/file_table.c:510)
[   62.488271]  task_work_run (kernel/task_work.c:233)
[   62.488298]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   62.488321]  do_group_exit (kernel/exit.c:1119)
[   62.488344]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   62.488375]  get_signal (kernel/signal.c:3037)
[   62.488397]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   62.488424]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   62.488458]  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)
[   62.488482]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   62.488510] RIP: 0033:0x4c2d9e
[   62.488530] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   62.488563] RSP: 002b:00007ffe4dd6af70 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   62.488608] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   62.488649] RDX: 0000000000000014 RSI: 00007ffe4dd6b050 RDI: 0000000000000008
[   62.488693] RBP: 00007ffe4dd6af80 R08: 00007ffe4dd6b010 R09: 000000000000000c
[   62.488732] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe4dd6bb18
[   62.488778] R13: 00007ffe4dd6bb58 R14: 00007ffe4dd6b140 R15: 0000000000543540
| [   62.488912] ------------[ cut here ]------------
| [   62.488944] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/189
| [   62.488992] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   62.489094] Tainted: [W]=WARN
[   62.489116] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   62.489151] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   62.489180] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   62.489270] RSP: 0018:ff5579a48036fbc0 EFLAGS: 00010286
[   62.489304] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   62.489344] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   62.489384] RBP: 0000000000000000 R08: ff422c928306d790 R09: ff422c92884f8830
[   62.489427] R10: ff422c9281cec120 R11: fefefefefefefeff R12: 0000000000000000
[   62.489465] R13: 0000000000000011 R14: ff422c9281cec000 R15: ff422c92830be000
[   62.489520] FS:  0000000000000000(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   62.489562] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.489596] CR2: 00007f5f9d375000 CR3: 0000000022c42003 CR4: 0000000000771ef0
[   62.489638] PKRU: 55555554
[   62.489651] Call Trace:
[   62.489667]  <TASK>
[   62.489683]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   62.489715]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   62.489746] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   62.489767] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   62.489788]  __fput (fs/file_table.c:510)
[   62.489810]  task_work_run (kernel/task_work.c:233)
[   62.489830]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   62.489851]  do_group_exit (kernel/exit.c:1119)
[   62.489870]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   62.489892]  get_signal (kernel/signal.c:3037)
[   62.489914]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   62.489944]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   62.489968]  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)
[   62.489991]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   62.490017] RIP: 0033:0x4c2d9e
[   62.490038] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   62.490073] RSP: 002b:00007ffe4dd6af70 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   62.490114] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   62.490154] RDX: 0000000000000014 RSI: 00007ffe4dd6b050 RDI: 0000000000000008
[   62.490198] RBP: 00007ffe4dd6af80 R08: 00007ffe4dd6b010 R09: 000000000000000c
[   62.490241] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe4dd6bb18
[   62.490278] R13: 00007ffe4dd6bb58 R14: 00007ffe4dd6b140 R15: 0000000000543540
| [   62.501122] ------------[ cut here ]------------
| [   62.501159] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/65
| [   62.501220] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   62.501338] Tainted: [W]=WARN
[   62.501360] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   62.501396] Workqueue: netns cleanup_net
[   62.501423] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   62.501450] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   62.501558] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[   62.501581] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   62.501624] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[   62.501660] RBP: 0000000000000000 R08: ff422c928324d7d0 R09: ff422c928302302c
[   62.501700] R10: ff422c9286ef4120 R11: fefefefefefefeff R12: 0000000000000000
[   62.501741] R13: 0000000000000011 R14: ff422c9286ef4000 R15: ff422c9281e27600
[   62.501783] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   62.501826] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.501854] CR2: 000055e0cab85d5c CR3: 00000000045c7004 CR4: 0000000000771ef0
[   62.501891] PKRU: 55555554
[   62.501904] Call Trace:
[   62.501920]  <TASK>
[   62.501934]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   62.501963]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   62.501994]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   62.502018]  cleanup_net (net/core/net_namespace.c:702)
[   62.502039]  process_one_work (kernel/workqueue.c:3314)
[   62.502067]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   62.502093]  ? rescuer_thread (kernel/workqueue.c:3672)
[   62.502111]  kthread (kernel/kthread.c:436)
[   62.502133]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   62.502156]  ret_from_fork (arch/x86/kernel/process.c:158)
[   62.502179]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   62.502204]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   62.505363] ------------[ cut here ]------------
| [   62.505407] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/192
| [   62.505464] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   62.505590] Tainted: [W]=WARN
[   62.505611] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   62.505647] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   62.505672] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   62.505812] RSP: 0018:ff5579a480377cc0 EFLAGS: 00010286
[   62.505846] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   62.505898] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074b00
[   62.505938] RBP: 0000000000000000 R08: ff422c92831dd310 R09: ff422c9281feb02c
[   62.506015] R10: ff422c9286ef2120 R11: fefefefefefefeff R12: 0000000000000000
[   62.506069] R13: 0000000000000010 R14: ff422c9286ef2000 R15: ff422c9283074b00
[   62.506127] FS:  00007fc6506dc740(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   62.506179] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.506220] CR2: 0000564a2931d008 CR3: 00000000033d0006 CR4: 0000000000771ef0
[   62.506258] PKRU: 55555554
[   62.506284] Call Trace:
[   62.506303]  <TASK>
[   62.506317]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   62.506340]  register_netdevice (net/core/dev.c:11488)
[   62.506364]  register_netdev (net/core/dev.c:11552)
[   62.506394]  loopback_net_init (drivers/net/loopback.c:218)
[   62.506417]  ops_init (net/core/net_namespace.c:137)
[   62.506446]  setup_net (net/core/net_namespace.c:446)
[   62.506476]  copy_net_ns (net/core/net_namespace.c:579)
[   62.506494]  create_new_namespaces (kernel/nsproxy.c:132)
[   62.506530]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   62.506556]  ksys_unshare (kernel/fork.c:3243)
[   62.506581]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   62.506613]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   62.506633]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   62.506662]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   62.506688] RIP: 0033:0x7fc6507d7bcb
[   62.506720] 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
[   62.506803] RSP: 002b:00007ffce8a67018 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   62.506844] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc6507d7bcb
[   62.506892] RDX: 0000000000000000 RSI: 00007ffce8a66d80 RDI: 0000000040000000
[   62.506937] RBP: 00007ffce8a673a0 R08: 00007ffce8a66f70 R09: 0000000000000000
[   62.506986] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   62.507040] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000564a137eab68
| [   62.507916] ------------[ cut here ]------------
| [   62.507945] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/192
| [   62.508007] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   62.508121] Tainted: [W]=WARN
[   62.508141] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   62.508168] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   62.508208] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   62.508308] RSP: 0018:ff5579a480377d68 EFLAGS: 00010286
[   62.508344] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   62.508406] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074b00
[   62.508451] RBP: 0000000000000000 R08: ff422c92831f8e90 R09: ff422c9287711030
[   62.508496] R10: ff422c92844e8120 R11: fefefefefefefeff R12: 0000000000000000
[   62.508549] R13: 0000000000000010 R14: ff422c92844e8000 R15: ff422c9283074b00
[   62.508592] FS:  0000000036d5f400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   62.508626] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.508673] CR2: 00007f44b668e000 CR3: 0000000004604001 CR4: 0000000000771ef0
[   62.508722] PKRU: 55555554
[   62.508734] Call Trace:
[   62.508760]  <TASK>
[   62.508775]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   62.508797]  register_netdevice (net/core/dev.c:11488)
[   62.508823] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[   62.508861]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   62.508884]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   62.508908]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   62.508929]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   62.508968] RIP: 0033:0x47cc8d
[   62.508999] 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 
[   62.509095] RSP: 002b:00007ffc97da5430 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   62.509140] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   62.509198] RDX: 00007ffc97da54b0 RSI: 00000000400454ca RDI: 0000000000000006
[   62.509246] RBP: 00007ffc97da5480 R08: 0000000000000000 R09: 0000000000000000
[   62.509305] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc97da5988
[   62.509344] R13: 00007ffc97da59c8 R14: 0000000000000002 R15: 0000000000543540
| [   62.509446] ------------[ cut here ]------------
| [   62.509473] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/192
| [   62.509527] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   62.509623] Tainted: [W]=WARN
[   62.509645] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   62.509693] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   62.509727] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   62.509830] RSP: 0018:ff5579a480377d60 EFLAGS: 00010286
[   62.509868] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   62.509920] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074b00
[   62.509961] RBP: 0000000000000002 R08: ff422c92831f8e90 R09: ff422c9287711030
[   62.510009] R10: ff422c92844e8120 R11: fefefefefefefeff R12: 0000000000000000
[   62.510050] R13: 0000000000000010 R14: ff422c92844e8000 R15: ff422c9283074b00
[   62.510096] FS:  0000000036d5f400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   62.510138] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.510170] CR2: 00007f44b668e000 CR3: 0000000004604001 CR4: 0000000000771ef0
[   62.510211] PKRU: 55555554
[   62.510225] Call Trace:
[   62.510239]  <TASK>
[   62.510253]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   62.510272]  notifier_call_chain (kernel/notifier.c:85)
[   62.510300]  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)
[   62.510328] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   62.510359]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   62.510379]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   62.510402]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   62.510423]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   62.510450] RIP: 0033:0x47cc8d
[   62.510471] 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 
[   62.510568] RSP: 002b:00007ffc97da5470 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   62.510607] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   62.510652] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   62.510692] RBP: 00007ffc97da54c0 R08: 0000000000000005 R09: 0000000000001ff0
[   62.510732] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffc97da5988
[   62.510772] R13: 00007ffc97da59c8 R14: 0000000000000002 R15: 0000000000543540
| [   62.510873] ------------[ cut here ]------------
| [   62.510903] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/192
| [   62.510956] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   62.511051] Tainted: [W]=WARN
[   62.511072] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   62.511113] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   62.511141] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   62.511238] RSP: 0018:ff5579a480377c10 EFLAGS: 00010286
[   62.511264] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   62.511310] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283074b00
[   62.511350] RBP: 0000000000000000 R08: ff422c92831f8e90 R09: ff422c9282dfc030
[   62.511389] R10: ff422c92844e8120 R11: fefefefefefefeff R12: 0000000000000000
[   62.511431] R13: 0000000000000010 R14: ff422c92844e8000 R15: ff422c9283074b00
[   62.511473] FS:  0000000036d5f400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   62.511519] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.511555] CR2: 00007f44b668e000 CR3: 0000000004604001 CR4: 0000000000771ef0
[   62.511592] PKRU: 55555554
[   62.511610] Call Trace:
[   62.511625]  <TASK>
[   62.511639]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   62.511662]  __dev_notify_flags (net/core/dev.c:9787)
[   62.511682]  netif_change_flags (net/core/dev.c:9820)
[   62.511706]  dev_change_flags (net/core/dev_api.c:68)
[   62.511730]  devinet_ioctl (net/ipv4/devinet.c:1199)
[   62.511752]  inet_ioctl (net/ipv4/af_inet.c:1011)
[   62.511773]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[   62.511799]  sock_do_ioctl (net/socket.c:1313)
[   62.511825]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   62.511846]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   62.511869]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   62.511889]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   62.511917] RIP: 0033:0x47cc8d
[   62.511940] 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 
[   62.512039] RSP: 002b:00007ffc97da5450 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   62.512087] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   62.512131] RDX: 00007ffc97da54c0 RSI: 0000000000008914 RDI: 0000000000000007
[   62.512174] RBP: 00007ffc97da54a0 R08: 0000000000000005 R09: 0000000000001ff0
[   62.512216] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffc97da5988
[   62.512261] R13: 00007ffc97da59c8 R14: 0000000000000002 R15: 0000000000543540
| [   72.504265] ------------[ cut here ]------------
| [   72.504348] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/192
| [   72.504417] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   72.504532] Tainted: [W]=WARN
[   72.504556] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   72.504593] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   72.504624] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   72.504719] RSP: 0018:ff5579a480377b50 EFLAGS: 00010286
[   72.504748] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   72.504789] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   72.504829] RBP: 0000000000000000 R08: ff422c92831f8e90 R09: ff422c9282dfc030
[   72.504873] R10: ff422c92844e8120 R11: fefefefefefefeff R12: 0000000000000000
[   72.504914] R13: 0000000000000010 R14: ff422c92844e8000 R15: ff422c92830be000
[   72.504961] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   72.505005] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   72.505038] CR2: 00007fcddd4966f0 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   72.505084] PKRU: 55555554
[   72.505098] Call Trace:
[   72.505116]  <TASK>
[   72.505133]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   72.505156]  netif_close_many (net/core/dev.c:1804)
[   72.505182]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   72.505215]  ? __queue_work (kernel/workqueue.c:2401)
[   72.505240]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   72.505274] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   72.505301] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   72.505329]  __fput (fs/file_table.c:510)
[   72.505354]  task_work_run (kernel/task_work.c:233)
[   72.505377]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   72.505402]  do_group_exit (kernel/exit.c:1119)
[   72.505425]  get_signal (kernel/signal.c:3037)
[   72.505448]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   72.505479]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   72.505508]  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)
[   72.505532]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[   72.505562]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   72.505590] RIP: 0033:0x4c2d9e
[   72.505612] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   72.505650] RSP: 002b:00007ffc97da4de0 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[   72.505690] RAX: 0000000000000014 RBX: 00007ffc97da4e70 RCX: 00000000004c2d9e
[   72.505732] RDX: 0000000000000000 RSI: 00007ffc97da4e80 RDI: 0000000000000008
[   72.505777] RBP: 00007ffc97da4df0 R08: 0000000000000000 R09: 0000000000000000
[   72.505818] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc97da4e64
[   72.505857] R13: 00007ffc97da59c8 R14: 00007ffc97da4fb0 R15: 0000000000543540
| [   72.505990] ------------[ cut here ]------------
| [   72.506020] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/192
| [   72.506074] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   72.506176] Tainted: [W]=WARN
[   72.506195] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   72.506228] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   72.506255] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   72.506357] RSP: 0018:ff5579a480377bc0 EFLAGS: 00010286
[   72.506382] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   72.506422] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   72.506461] RBP: 0000000000000000 R08: ff422c92831f8e90 R09: ff422c9283302830
[   72.506500] R10: ff422c92844e8120 R11: fefefefefefefeff R12: 0000000000000000
[   72.506540] R13: 0000000000000011 R14: ff422c92844e8000 R15: ff422c92830be000
[   72.506583] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   72.506623] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   72.506657] CR2: 00007fcddd4966f0 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   72.506698] PKRU: 55555554
[   72.506710] Call Trace:
[   72.506723]  <TASK>
[   72.506737]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   72.506766]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   72.506797] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   72.506819] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   72.506840]  __fput (fs/file_table.c:510)
[   72.506860]  task_work_run (kernel/task_work.c:233)
[   72.506880]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   72.506902]  do_group_exit (kernel/exit.c:1119)
[   72.506922]  get_signal (kernel/signal.c:3037)
[   72.506945]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   72.506974]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   72.507004]  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)
[   72.507027]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[   72.507058]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   72.507088] RIP: 0033:0x4c2d9e
[   72.507110] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   72.507144] RSP: 002b:00007ffc97da4de0 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[   72.507188] RAX: 0000000000000014 RBX: 00007ffc97da4e70 RCX: 00000000004c2d9e
[   72.507228] RDX: 0000000000000000 RSI: 00007ffc97da4e80 RDI: 0000000000000008
[   72.507272] RBP: 00007ffc97da4df0 R08: 0000000000000000 R09: 0000000000000000
[   72.507311] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc97da4e64
[   72.507362] R13: 00007ffc97da59c8 R14: 00007ffc97da4fb0 R15: 0000000000543540
| [   72.518126] ------------[ cut here ]------------
| [   72.518169] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/65
| [   72.518233] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   72.518335] Tainted: [W]=WARN
[   72.518359] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   72.518397] Workqueue: netns cleanup_net
[   72.518423] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   72.518454] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   72.519941] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[   72.519984] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   72.520028] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[   72.520085] RBP: 0000000000000000 R08: ff422c92831dd310 R09: ff422c928330502c
[   72.520127] R10: ff422c9286ef2120 R11: fefefefefefefeff R12: 0000000000000000
[   72.520168] R13: 0000000000000011 R14: ff422c9286ef2000 R15: ff422c9281e27600
[   72.520212] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   72.520256] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   72.520295] CR2: 000055e0cab85d5c CR3: 00000000045c7004 CR4: 0000000000771ef0
[   72.520344] PKRU: 55555554
[   72.520360] Call Trace:
[   72.520376]  <TASK>
[   72.520392]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   72.520424]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   72.520455]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   72.520476]  cleanup_net (net/core/net_namespace.c:702)
[   72.520497]  process_one_work (kernel/workqueue.c:3314)
[   72.520521]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   72.520540]  ? rescuer_thread (kernel/workqueue.c:3672)
[   72.520565]  kthread (kernel/kthread.c:436)
[   72.520588]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   72.520611]  ret_from_fork (arch/x86/kernel/process.c:158)
[   72.520635]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   72.520657]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   72.522191] ------------[ cut here ]------------
| [   72.522234] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/194
| [   72.522289] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   72.522395] Tainted: [W]=WARN
[   72.522417] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   72.522448] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   72.522476] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   72.522572] RSP: 0018:ff5579a480313cc0 EFLAGS: 00010286
[   72.522596] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   72.522637] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   72.522678] RBP: 0000000000000000 R08: ff422c92831dddd0 R09: ff422c9286ef302c
[   72.522721] R10: ff422c9281e95120 R11: fefefefefefefeff R12: 0000000000000000
[   72.522764] R13: 0000000000000010 R14: ff422c9281e95000 R15: ff422c92830be000
[   72.522806] FS:  00007f68a154e740(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   72.522853] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   72.522881] CR2: 00007f68a1710280 CR3: 000000000336e006 CR4: 0000000000771ef0
[   72.522923] PKRU: 55555554
[   72.522938] Call Trace:
[   72.522953]  <TASK>
[   72.522969]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   72.522991]  register_netdevice (net/core/dev.c:11488)
[   72.523016]  register_netdev (net/core/dev.c:11552)
[   72.523039]  loopback_net_init (drivers/net/loopback.c:218)
[   72.523067]  ops_init (net/core/net_namespace.c:137)
[   72.523091]  setup_net (net/core/net_namespace.c:446)
[   72.523114]  copy_net_ns (net/core/net_namespace.c:579)
[   72.523139]  create_new_namespaces (kernel/nsproxy.c:132)
[   72.523170]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   72.523205]  ksys_unshare (kernel/fork.c:3243)
[   72.523227]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   72.523250]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   72.523275]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   72.523295]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   72.523330] RIP: 0033:0x7f68a1649bcb
[   72.523353] 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
[   72.523445] RSP: 002b:00007ffe96605638 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   72.523489] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f68a1649bcb
[   72.523530] RDX: 0000000000000000 RSI: 00007ffe966053a0 RDI: 0000000040000000
[   72.523570] RBP: 00007ffe966059c0 R08: 00007ffe96605590 R09: 0000000000000000
[   72.523609] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   72.523649] R13: 0000000000000000 R14: 00000000ffffffff R15: 00005591484c4b68
| [   72.524380] ------------[ cut here ]------------
| [   72.524415] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/194
| [   72.524472] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   72.524572] Tainted: [W]=WARN
[   72.524593] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   72.524629] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   72.524655] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   72.524754] RSP: 0018:ff5579a480313d68 EFLAGS: 00010286
[   72.524782] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   72.524825] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   72.524867] RBP: 0000000000000000 R08: ff422c92831917d0 R09: ff422c9286ef4030
[   72.524907] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   72.524948] R13: 0000000000000010 R14: ff422c92844ec000 R15: ff422c92830be000
[   72.524990] FS:  00000000064ee400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   72.525036] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   72.525079] CR2: 00007f3ffb8b7000 CR3: 0000000002f6f001 CR4: 0000000000771ef0
[   72.525123] PKRU: 55555554
[   72.525139] Call Trace:
[   72.525154]  <TASK>
[   72.525169]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   72.525193]  register_netdevice (net/core/dev.c:11488)
[   72.525215] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[   72.525248]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   72.525268]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   72.525292]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   72.525313]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   72.525345] RIP: 0033:0x47cc8d
[   72.525367] 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 
[   72.525461] RSP: 002b:00007ffd6af82930 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   72.525502] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   72.525542] RDX: 00007ffd6af829b0 RSI: 00000000400454ca RDI: 0000000000000006
[   72.525582] RBP: 00007ffd6af82980 R08: 0000000000000000 R09: 0000000000000000
[   72.525622] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6af82e88
[   72.525665] R13: 00007ffd6af82ec8 R14: 0000000000000002 R15: 0000000000543540
| [   72.528998] ------------[ cut here ]------------
| [   72.529036] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: ifconfig/195
| [   72.529103] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   72.529214] Tainted: [W]=WARN
[   72.529231] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   72.529274] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   72.529305] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   72.529402] RSP: 0018:ff5579a480377c78 EFLAGS: 00010286
[   72.529434] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   72.529474] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[   72.529517] RBP: 0000000000000000 R08: ff422c92831917d0 R09: ff422c9282ea8030
[   72.529559] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   72.529605] R13: 0000000000000010 R14: ff422c92844ec000 R15: ff422c9281e27600
[   72.529653] FS:  00007f98bbe7b740(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   72.529699] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   72.529734] CR2: 000055f50ab025fa CR3: 0000000003244001 CR4: 0000000000771ef0
[   72.529778] PKRU: 55555554
[   72.529794] Call Trace:
[   72.529809]  <TASK>
[   72.529822]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   72.529846]  notifier_call_chain (kernel/notifier.c:85)
[   72.529873]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[   72.529895]  ? sk_ioctl (net/core/sock.c:4476 (discriminator 3) net/core/sock.c:4504 (discriminator 3))
[   72.529919]  netif_set_mtu (net/core/dev.c:9910)
[   72.529945]  dev_set_mtu (net/core/dev_api.c:249)
[   72.529967]  dev_ioctl (net/core/dev_ioctl.c:816)
[   72.529991]  sock_do_ioctl (net/socket.c:1327)
[   72.530016]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   72.530041]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   72.530066]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   72.530090]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   72.530121] RIP: 0033:0x7f98bbf715fd
[   72.530143] 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 
[   72.530245] RSP: 002b:00007fff5c3115c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   72.530289] RAX: ffffffffffffffda RBX: 00007fff5c312857 RCX: 00007f98bbf715fd
[   72.530330] RDX: 00007fff5c311670 RSI: 0000000000008922 RDI: 0000000000000008
[   72.530374] RBP: 00007fff5c311610 R08: 0000000000000000 R09: 00007fff5c31285b
[   72.530412] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff5c3119a8
[   72.530453] R13: 0000000000000004 R14: 00007f98bc0bf000 R15: 000055f50ab00918
| [   72.530606] ------------[ cut here ]------------
| [   72.530638] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/194
| [   72.530686] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   72.530774] Tainted: [W]=WARN
[   72.530795] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   72.530833] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   72.530865] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   72.530968] RSP: 0018:ff5579a480313d60 EFLAGS: 00010286
[   72.530998] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   72.531043] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   72.531087] RBP: 0000000000000002 R08: ff422c92831917d0 R09: ff422c9286ef4030
[   72.531132] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   72.531171] R13: 0000000000000010 R14: ff422c92844ec000 R15: ff422c92830be000
[   72.531216] FS:  00000000064ee400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   72.531260] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   72.531288] CR2: 00007f3ffb8b7000 CR3: 0000000002f6f001 CR4: 0000000000771ef0
[   72.531334] PKRU: 55555554
[   72.531350] Call Trace:
[   72.531362]  <TASK>
[   72.531374]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   72.531399]  notifier_call_chain (kernel/notifier.c:85)
[   72.531420]  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)
[   72.531443] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   72.531471]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   72.531491]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   72.531515]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   72.531535]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   72.531563] RIP: 0033:0x47cc8d
[   72.531583] 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 
[   72.531680] RSP: 002b:00007ffd6af82970 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   72.531718] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   72.531757] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   72.531793] RBP: 00007ffd6af829c0 R08: 0000000000000021 R09: 00000000064ef450
[   72.531834] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffd6af82e88
[   72.531876] R13: 00007ffd6af82ec8 R14: 0000000000000002 R15: 0000000000543540
| [   72.531978] ------------[ cut here ]------------
| [   72.532011] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/194
| [   72.532069] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   72.532187] Tainted: [W]=WARN
[   72.532209] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   72.532242] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   72.532268] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   72.532374] RSP: 0018:ff5579a480313d30 EFLAGS: 00010286
[   72.532401] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   72.532441] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   72.532483] RBP: 0000000000000000 R08: ff422c92831917d0 R09: ff422c9282ea8030
[   72.532525] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   72.532568] R13: 0000000000000010 R14: ff422c92844ec000 R15: ff422c92830be000
[   72.532611] FS:  00000000064ee400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   72.532656] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   72.532692] CR2: 00007f3ffb8b7000 CR3: 0000000002f6f001 CR4: 0000000000771ef0
[   72.532733] PKRU: 55555554
[   72.532746] Call Trace:
[   72.532757]  <TASK>
[   72.532772]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   72.532796]  __dev_notify_flags (net/core/dev.c:9787)
[   72.532820]  netif_change_flags (net/core/dev.c:9820)
[   72.532843]  dev_change_flags (net/core/dev_api.c:68)
[   72.532866]  dev_ioctl (net/core/dev_ioctl.c:816)
[   72.532889]  sock_do_ioctl (net/socket.c:1327)
[   72.532914]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   72.532936]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   72.532956]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   72.532980]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   72.533010] RIP: 0033:0x47cc8d
[   72.533032] 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 
[   72.533137] RSP: 002b:00007ffd6af82950 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   72.533180] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   72.533221] RDX: 00007ffd6af829c0 RSI: 0000000000008914 RDI: 0000000000000007
[   72.533265] RBP: 00007ffd6af829a0 R08: 0000000000000021 R09: 00000000064ef450
[   72.533306] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffd6af82e88
[   72.533355] R13: 00007ffd6af82ec8 R14: 0000000000000002 R15: 0000000000543540
| [   82.521050] ------------[ cut here ]------------
| [   82.521148] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/194
| [   82.521218] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   82.521326] Tainted: [W]=WARN
[   82.521352] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.521391] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   82.521421] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   82.521515] RSP: 0018:ff5579a480313b50 EFLAGS: 00010286
[   82.521543] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   82.521585] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be100
[   82.521627] RBP: 0000000000000000 R08: ff422c92831917d0 R09: ff422c9282ea8030
[   82.521666] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   82.521713] R13: 0000000000000010 R14: ff422c92844ec000 R15: ff422c92830be100
[   82.521757] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   82.521802] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.521830] CR2: 00007f3ffb8b7000 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   82.521871] PKRU: 55555554
[   82.521887] Call Trace:
[   82.521912]  <TASK>
[   82.521928]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   82.521950]  netif_close_many (net/core/dev.c:1804)
[   82.521971]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   82.522000]  ? __queue_work (kernel/workqueue.c:2401)
[   82.522026]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   82.522059] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   82.522081] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   82.522103]  __fput (fs/file_table.c:510)
[   82.522127]  task_work_run (kernel/task_work.c:233)
[   82.522152]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   82.522176]  do_group_exit (kernel/exit.c:1119)
[   82.522198]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   82.522221]  get_signal (kernel/signal.c:3037)
[   82.522246]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   82.522276]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   82.522310]  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)
[   82.522334]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   82.522371] RIP: 0033:0x4c2d9e
[   82.522393] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   82.522427] RSP: 002b:00007ffd6af822e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   82.522469] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   82.522508] RDX: 0000000000000014 RSI: 00007ffd6af823c0 RDI: 0000000000000008
[   82.522549] RBP: 00007ffd6af822f0 R08: 00007ffd6af82380 R09: 000000000000000c
[   82.522594] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000064f6f00
[   82.522638] R13: 00007ffd6af82ec8 R14: 00007ffd6af824b0 R15: 0000000000543540
| [   82.522772] ------------[ cut here ]------------
| [   82.522801] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/194
| [   82.522853] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   82.522958] Tainted: [W]=WARN
[   82.522978] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.523011] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   82.523041] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   82.523477] RSP: 0018:ff5579a480313bc0 EFLAGS: 00010286
[   82.523519] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   82.523560] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be100
[   82.523603] RBP: 0000000000000000 R08: ff422c92831917d0 R09: ff422c9287735830
[   82.523647] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   82.523688] R13: 0000000000000011 R14: ff422c92844ec000 R15: ff422c92830be100
[   82.523730] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   82.523772] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.523808] CR2: 00007f3ffb8b7000 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   82.523841] PKRU: 55555554
[   82.523860] Call Trace:
[   82.523874]  <TASK>
[   82.523890]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   82.523922]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   82.523951] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   82.523972] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   82.523994]  __fput (fs/file_table.c:510)
[   82.524015]  task_work_run (kernel/task_work.c:233)
[   82.524035]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   82.524058]  do_group_exit (kernel/exit.c:1119)
[   82.524081]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   82.524105]  get_signal (kernel/signal.c:3037)
[   82.524127]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   82.524159]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   82.524187]  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)
[   82.524209]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   82.524241] RIP: 0033:0x4c2d9e
[   82.524266] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   82.524302] RSP: 002b:00007ffd6af822e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   82.524335] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   82.524371] RDX: 0000000000000014 RSI: 00007ffd6af823c0 RDI: 0000000000000008
[   82.524410] RBP: 00007ffd6af822f0 R08: 00007ffd6af82380 R09: 000000000000000c
[   82.524449] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000064f6f00
[   82.524493] R13: 00007ffd6af82ec8 R14: 00007ffd6af824b0 R15: 0000000000543540
| [   82.532121] ------------[ cut here ]------------
| [   82.532195] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/65
| [   82.532256] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   82.532368] Tainted: [W]=WARN
[   82.532389] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.532426] Workqueue: netns cleanup_net
[   82.532449] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   82.532479] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   82.532582] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[   82.532609] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   82.532649] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[   82.532691] RBP: 0000000000000000 R08: ff422c92831dddd0 R09: ff422c928773202c
[   82.532731] R10: ff422c9281e95120 R11: fefefefefefefeff R12: 0000000000000000
[   82.532774] R13: 0000000000000011 R14: ff422c9281e95000 R15: ff422c9281e27600
[   82.532815] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   82.532855] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.532891] CR2: 00007f98bbf3f2a0 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   82.532934] PKRU: 55555554
[   82.532947] Call Trace:
[   82.532962]  <TASK>
[   82.532982]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   82.533013]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   82.533041]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   82.533066]  cleanup_net (net/core/net_namespace.c:702)
[   82.533090]  process_one_work (kernel/workqueue.c:3314)
[   82.533114]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   82.533138]  ? rescuer_thread (kernel/workqueue.c:3672)
[   82.533160]  kthread (kernel/kthread.c:436)
[   82.533182]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   82.533203]  ret_from_fork (arch/x86/kernel/process.c:158)
[   82.533228]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   82.533251]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   82.536569] ------------[ cut here ]------------
| [   82.536610] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: unshare/197
| [   82.536666] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   82.536779] Tainted: [W]=WARN
[   82.536800] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.536836] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   82.536860] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   82.536958] RSP: 0018:ff5579a480263cc0 EFLAGS: 00010286
[   82.536988] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   82.537028] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283051b00
[   82.537075] RBP: 0000000000000000 R08: ff422c9281950650 R09: ff422c9286ef502c
[   82.537116] R10: ff422c9282eaa120 R11: fefefefefefefeff R12: 0000000000000000
[   82.537159] R13: 0000000000000010 R14: ff422c9282eaa000 R15: ff422c9283051b00
[   82.537201] FS:  00007f8edc74c740(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[   82.537237] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.537272] CR2: 000055fa0e120008 CR3: 0000000002f6f002 CR4: 0000000000771ef0
[   82.537315] PKRU: 55555554
[   82.537330] Call Trace:
[   82.537350]  <TASK>
[   82.537366]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   82.537384]  register_netdevice (net/core/dev.c:11488)
[   82.537408]  register_netdev (net/core/dev.c:11552)
[   82.537430]  loopback_net_init (drivers/net/loopback.c:218)
[   82.537453]  ops_init (net/core/net_namespace.c:137)
[   82.537477]  setup_net (net/core/net_namespace.c:446)
[   82.537499]  copy_net_ns (net/core/net_namespace.c:579)
[   82.537522]  create_new_namespaces (kernel/nsproxy.c:132)
[   82.537551]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   82.537580]  ksys_unshare (kernel/fork.c:3243)
[   82.537601]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   82.537624]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   82.537642]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   82.537666]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   82.537693] RIP: 0033:0x7f8edc847bcb
[   82.537715] 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
[   82.537815] RSP: 002b:00007ffe86bd6e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   82.537859] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8edc847bcb
[   82.537899] RDX: 0000000000000000 RSI: 00007ffe86bd6ba0 RDI: 0000000040000000
[   82.537940] RBP: 00007ffe86bd71c0 R08: 00007ffe86bd6d90 R09: 0000000000000000
[   82.537987] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   82.538027] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055f9e8c28b68
| [   82.538937] ------------[ cut here ]------------
| [   82.538974] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/197
| [   82.539026] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   82.539127] Tainted: [W]=WARN
[   82.539145] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.539180] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   82.539217] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   82.539312] RSP: 0018:ff5579a480263d68 EFLAGS: 00010286
[   82.539345] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   82.539391] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   82.539435] RBP: 0000000000000000 R08: ff422c928318b090 R09: ff422c9287712030
[   82.539476] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   82.539517] R13: 0000000000000010 R14: ff422c92844ec000 R15: ff422c92830be000
[   82.539563] FS:  0000000005b06400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   82.539606] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.539632] CR2: 00007fd3d392b000 CR3: 0000000003323003 CR4: 0000000000771ef0
[   82.539678] PKRU: 55555554
[   82.539690] Call Trace:
[   82.539701]  <TASK>
[   82.539717]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   82.539740]  register_netdevice (net/core/dev.c:11488)
[   82.539764] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[   82.539789]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   82.539811]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   82.539834]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   82.539854]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   82.539883] RIP: 0033:0x47cc8d
[   82.539903] 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 
[   82.539998] RSP: 002b:00007ffd709403f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   82.540036] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   82.540081] RDX: 00007ffd70940470 RSI: 00000000400454ca RDI: 0000000000000006
[   82.540121] RBP: 00007ffd70940440 R08: 0000000000000000 R09: 0000000000000000
[   82.540159] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd70940948
[   82.540199] R13: 00007ffd70940988 R14: 0000000000000002 R15: 0000000000543540
| [   82.540298] ------------[ cut here ]------------
| [   82.540324] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/197
| [   82.540391] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   82.540477] Tainted: [W]=WARN
[   82.540497] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.540531] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   82.540562] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   82.540653] RSP: 0018:ff5579a480263d60 EFLAGS: 00010286
[   82.540683] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   82.540725] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   82.540764] RBP: 0000000000000002 R08: ff422c928318b090 R09: ff422c9287712030
[   82.540807] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   82.540847] R13: 0000000000000010 R14: ff422c92844ec000 R15: ff422c92830be000
[   82.540891] FS:  0000000005b06400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   82.540923] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.540960] CR2: 00007fd3d392b000 CR3: 0000000003323003 CR4: 0000000000771ef0
[   82.541000] PKRU: 55555554
[   82.541013] Call Trace:
[   82.541028]  <TASK>
[   82.541041]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   82.541066]  notifier_call_chain (kernel/notifier.c:85)
[   82.541089]  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)
[   82.541115] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   82.541138]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   82.541157]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   82.541180]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   82.541201]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   82.541230] RIP: 0033:0x47cc8d
[   82.541255] 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 
[   82.541357] RSP: 002b:00007ffd70940430 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   82.541396] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   82.541436] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   82.541477] RBP: 00007ffd70940480 R08: 0000000000000000 R09: 0000000000000000
[   82.541516] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd70940948
[   82.541554] R13: 00007ffd70940988 R14: 0000000000000002 R15: 0000000000543540
| [   82.541648] ------------[ cut here ]------------
| [   82.541674] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/197
| [   82.541718] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   82.541810] Tainted: [W]=WARN
[   82.541832] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.541864] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   82.541892] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   82.541981] RSP: 0018:ff5579a480263c10 EFLAGS: 00010286
[   82.542008] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   82.542048] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[   82.542093] RBP: 0000000000000000 R08: ff422c928318b090 R09: ff422c9286ef0030
[   82.542133] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   82.542172] R13: 0000000000000010 R14: ff422c92844ec000 R15: ff422c92830be000
[   82.542213] FS:  0000000005b06400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   82.542253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.542287] CR2: 00007fd3d392b000 CR3: 0000000003323003 CR4: 0000000000771ef0
[   82.542329] PKRU: 55555554
[   82.542347] Call Trace:
[   82.542362]  <TASK>
[   82.542375]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   82.542395]  __dev_notify_flags (net/core/dev.c:9787)
[   82.542418]  netif_change_flags (net/core/dev.c:9820)
[   82.542438]  dev_change_flags (net/core/dev_api.c:68)
[   82.542456]  devinet_ioctl (net/ipv4/devinet.c:1199)
[   82.542481]  inet_ioctl (net/ipv4/af_inet.c:1011)
[   82.542499]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[   82.542521]  sock_do_ioctl (net/socket.c:1313)
[   82.542543]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   82.542564]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   82.542586]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   82.542606]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   82.542632] RIP: 0033:0x47cc8d
[   82.542654] 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 
[   82.542741] RSP: 002b:00007ffd70940410 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   82.542786] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   82.542827] RDX: 00007ffd70940480 RSI: 0000000000008914 RDI: 0000000000000007
[   82.542870] RBP: 00007ffd70940460 R08: 0000000000000000 R09: 0000000000000000
[   82.542912] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd70940948
[   82.542954] R13: 00007ffd70940988 R14: 0000000000000002 R15: 0000000000543540
| [   92.535348] ------------[ cut here ]------------
| [   92.535440] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/197
| [   92.535516] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   92.535623] Tainted: [W]=WARN
[   92.535646] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.535687] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.535716] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.535812] RSP: 0018:ff5579a480263b50 EFLAGS: 00010286
[   92.535843] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   92.535885] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283051c00
[   92.535932] RBP: 0000000000000000 R08: ff422c928318b090 R09: ff422c9286ef0030
[   92.535973] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   92.536015] R13: 0000000000000010 R14: ff422c92844ec000 R15: ff422c9283051c00
[   92.536063] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   92.536108] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.536145] CR2: 00007fd3d392b000 CR3: 0000000022c42004 CR4: 0000000000771ef0
[   92.536188] PKRU: 55555554
[   92.536202] Call Trace:
[   92.536218]  <TASK>
[   92.536234]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   92.536262]  netif_close_many (net/core/dev.c:1804)
[   92.536285]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   92.536314]  ? __queue_work (kernel/workqueue.c:2401)
[   92.536336]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   92.536371] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   92.536393] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   92.536416]  __fput (fs/file_table.c:510)
[   92.536439]  task_work_run (kernel/task_work.c:233)
[   92.536461]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   92.536484]  do_group_exit (kernel/exit.c:1119)
[   92.536509]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   92.536532]  get_signal (kernel/signal.c:3037)
[   92.536553]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   92.536584]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   92.536616]  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)
[   92.536640]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   92.536670] RIP: 0033:0x4c2d9e
[   92.536692] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   92.536731] RSP: 002b:00007ffd7093fda0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   92.536775] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   92.536819] RDX: 0000000000000014 RSI: 00007ffd7093fe80 RDI: 0000000000000008
[   92.536858] RBP: 00007ffd7093fdb0 R08: 00007ffd7093fe40 R09: 000000000000000c
[   92.536904] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000005b0e830
[   92.536945] R13: 00007ffd70940988 R14: 00007ffd7093ff70 R15: 0000000000543540
| [   92.537083] ------------[ cut here ]------------
| [   92.537146] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/197
| [   92.537201] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   92.537293] Tainted: [W]=WARN
[   92.537319] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.537356] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.537392] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.537488] RSP: 0018:ff5579a480263bc0 EFLAGS: 00010286
[   92.537518] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   92.537557] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283051c00
[   92.537598] RBP: 0000000000000000 R08: ff422c928318b090 R09: ff422c92891fd830
[   92.537637] R10: ff422c92844ec120 R11: fefefefefefefeff R12: 0000000000000000
[   92.537679] R13: 0000000000000011 R14: ff422c92844ec000 R15: ff422c9283051c00
[   92.537724] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[   92.537765] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.537796] CR2: 00007fd3d392b000 CR3: 0000000022c42004 CR4: 0000000000771ef0
[   92.537836] PKRU: 55555554
[   92.537850] Call Trace:
[   92.537865]  <TASK>
[   92.537880]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   92.537906]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   92.537936] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[   92.537959] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[   92.537980]  __fput (fs/file_table.c:510)
[   92.537998]  task_work_run (kernel/task_work.c:233)
[   92.538022]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   92.538045]  do_group_exit (kernel/exit.c:1119)
[   92.538228]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   92.538269]  get_signal (kernel/signal.c:3037)
[   92.538294]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   92.538321]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   92.538351]  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)
[   92.538385]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   92.538413] RIP: 0033:0x4c2d9e
[   92.538434] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   92.538468] RSP: 002b:00007ffd7093fda0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   92.538513] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   92.538553] RDX: 0000000000000014 RSI: 00007ffd7093fe80 RDI: 0000000000000008
[   92.538593] RBP: 00007ffd7093fdb0 R08: 00007ffd7093fe40 R09: 000000000000000c
[   92.538634] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000005b0e830
[   92.538676] R13: 00007ffd70940988 R14: 00007ffd7093ff70 R15: 0000000000543540
| [   92.547119] ------------[ cut here ]------------
| [   92.547155] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/65
| [   92.547229] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   92.547331] Tainted: [W]=WARN
[   92.547356] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.547400] Workqueue: netns cleanup_net
[   92.547425] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.547448] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.547544] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[   92.547567] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   92.547613] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[   92.547656] RBP: 0000000000000000 R08: ff422c9281950650 R09: ff422c928917d02c
[   92.547702] R10: ff422c9282eaa120 R11: fefefefefefefeff R12: 0000000000000000
[   92.547749] R13: 0000000000000011 R14: ff422c9282eaa000 R15: ff422c9281e27600
[   92.547789] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   92.547834] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.547872] CR2: 00007f98bbf3f2a0 CR3: 0000000022c42002 CR4: 0000000000771ef0
[   92.547916] PKRU: 55555554
[   92.547936] Call Trace:
[   92.547952]  <TASK>
[   92.547965]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   92.547994]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   92.548023]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   92.548045]  cleanup_net (net/core/net_namespace.c:702)
[   92.548075]  process_one_work (kernel/workqueue.c:3314)
[   92.548099]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   92.548120]  ? rescuer_thread (kernel/workqueue.c:3672)
[   92.548144]  kthread (kernel/kthread.c:436)
[   92.548165]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   92.548186]  ret_from_fork (arch/x86/kernel/process.c:158)
[   92.548209]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   92.548230]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   92.553097] ------------[ cut here ]------------
| [   92.553166] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: unshare/199
| [   92.553252] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   92.553428] Tainted: [W]=WARN
[   92.553482] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.553552] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.553615] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.553749] RSP: 0018:ff5579a480377cc0 EFLAGS: 00010286
[   92.553812] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   92.553887] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5a00
[   92.553961] RBP: 0000000000000000 R08: ff422c928306d790 R09: ff422c9282ead02c
[   92.554036] R10: ff422c9281fe9120 R11: fefefefefefefeff R12: 0000000000000000
[   92.554116] R13: 0000000000000010 R14: ff422c9281fe9000 R15: ff422c9281dd5a00
[   92.554197] FS:  00007fc6685e7740(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   92.554274] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.554344] CR2: 000055fabc2b4008 CR3: 0000000003323005 CR4: 0000000000771ef0
[   92.554429] PKRU: 55555554
[   92.554477] Call Trace:
[   92.554525]  <TASK>
[   92.554573]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   92.554630]  register_netdevice (net/core/dev.c:11488)
[   92.554688]  register_netdev (net/core/dev.c:11552)
[   92.554744]  loopback_net_init (drivers/net/loopback.c:218)
[   92.554803]  ops_init (net/core/net_namespace.c:137)
[   92.554859]  setup_net (net/core/net_namespace.c:446)
[   92.554916]  copy_net_ns (net/core/net_namespace.c:579)
[   92.554973]  create_new_namespaces (kernel/nsproxy.c:132)
[   92.555038]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   92.555111]  ksys_unshare (kernel/fork.c:3243)
[   92.555169]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   92.555225]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   92.555282]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   92.555339]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   92.555406] RIP: 0033:0x7fc6686e2bcb
[   92.555462] 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
[   92.555593] RSP: 002b:00007ffcf24e0388 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   92.555670] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc6686e2bcb
[   92.555746] RDX: 0000000000000000 RSI: 00007ffcf24e00f0 RDI: 0000000040000000
[   92.555822] RBP: 00007ffcf24e0710 R08: 00007ffcf24e02e0 R09: 0000000000000000
[   92.555898] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   92.555973] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055fa950d4b68
| [   92.556792] ------------[ cut here ]------------
| [   92.556855] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/199
| [   92.556941] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   92.557119] Tainted: [W]=WARN
[   92.557172] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.557240] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.557304] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.557472] RSP: 0018:ff5579a480377d68 EFLAGS: 00010286
[   92.557535] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   92.557611] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5a00
[   92.557687] RBP: 0000000000000000 R08: ff422c9283178f10 R09: ff422c9282eab030
[   92.557764] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[   92.557843] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9281dd5a00
[   92.557921] FS:  0000000025bbd400(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   92.558000] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.558106] CR2: 00007f9b473b8000 CR3: 000000000332e006 CR4: 0000000000771ef0
[   92.558186] PKRU: 55555554
[   92.558234] Call Trace:
[   92.558282]  <TASK>
[   92.558341]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   92.558406]  register_netdevice (net/core/dev.c:11488)
[   92.558464] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[   92.558530]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   92.558588]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   92.558644]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   92.558701]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   92.558764] RIP: 0033:0x47cc8d
[   92.558819] 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 
[   92.558953] RSP: 002b:00007ffe0e4f17b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   92.559030] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   92.559128] RDX: 00007ffe0e4f1830 RSI: 00000000400454ca RDI: 0000000000000006
[   92.559204] RBP: 00007ffe0e4f1800 R08: 0000000000000000 R09: 0000000000000000
[   92.559282] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe0e4f1d08
[   92.559360] R13: 00007ffe0e4f1d48 R14: 0000000000000002 R15: 0000000000543540
| [   92.562748] ------------[ cut here ]------------
| [   92.562788] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: ifconfig/200
| [   92.562846] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   92.562951] Tainted: [W]=WARN
[   92.562974] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.563009] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.563038] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.563146] RSP: 0018:ff5579a480313c78 EFLAGS: 00010286
[   92.563174] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   92.563207] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[   92.563246] RBP: 0000000000000000 R08: ff422c9283178f10 R09: ff422c9286ef1030
[   92.563288] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[   92.563328] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9281e27600
[   92.563376] FS:  00007f3107d5f740(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[   92.563422] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.563458] CR2: 0000560a8f7ea5fa CR3: 000000000328e001 CR4: 0000000000771ef0
[   92.563502] PKRU: 55555554
[   92.563521] Call Trace:
[   92.563536]  <TASK>
[   92.563550]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   92.563575]  notifier_call_chain (kernel/notifier.c:85)
[   92.563600]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[   92.563623]  ? sk_ioctl (net/core/sock.c:4476 (discriminator 3) net/core/sock.c:4504 (discriminator 3))
[   92.563646]  netif_set_mtu (net/core/dev.c:9910)
[   92.563664]  dev_set_mtu (net/core/dev_api.c:249)
[   92.563688]  dev_ioctl (net/core/dev_ioctl.c:816)
[   92.563712]  sock_do_ioctl (net/socket.c:1327)
[   92.563734]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   92.563758]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   92.563781]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   92.563803]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   92.563833] RIP: 0033:0x7f3107e555fd
[   92.563854] 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 
[   92.563953] RSP: 002b:00007ffefdfee7c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   92.563996] RAX: ffffffffffffffda RBX: 00007ffefdfef857 RCX: 00007f3107e555fd
[   92.564036] RDX: 00007ffefdfee870 RSI: 0000000000008922 RDI: 0000000000000008
[   92.564081] RBP: 00007ffefdfee810 R08: 0000000000000000 R09: 00007ffefdfef85b
[   92.564121] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffefdfeeba8
[   92.564161] R13: 0000000000000004 R14: 00007f3107fa3000 R15: 0000560a8f7e8918
| [   92.564313] ------------[ cut here ]------------
| [   92.564384] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/199
| [   92.564472] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   92.564645] Tainted: [W]=WARN
[   92.564699] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.564769] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.564834] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.564971] RSP: 0018:ff5579a480377d60 EFLAGS: 00010286
[   92.565062] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   92.565140] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5a00
[   92.565221] RBP: 0000000000000002 R08: ff422c9283178f10 R09: ff422c9282eab030
[   92.565299] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[   92.565380] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9281dd5a00
[   92.565471] FS:  0000000025bbd400(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   92.565552] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.565622] CR2: 00007f9b473b8000 CR3: 000000000332e006 CR4: 0000000000771ef0
[   92.565701] PKRU: 55555554
[   92.565749] Call Trace:
[   92.565798]  <TASK>
[   92.565847]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[   92.565905]  notifier_call_chain (kernel/notifier.c:85)
[   92.565962]  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)
[   92.566027] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[   92.566097]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   92.566154]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   92.566211]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   92.566267]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   92.566330] RIP: 0033:0x47cc8d
[   92.566391] 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 
[   92.566524] RSP: 002b:00007ffe0e4f17f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   92.566602] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   92.566680] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[   92.566756] RBP: 00007ffe0e4f1840 R08: 0000000000000021 R09: 0000000025bbe450
[   92.566832] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffe0e4f1d08
[   92.566910] R13: 00007ffe0e4f1d48 R14: 0000000000000002 R15: 0000000000543540
| [   92.567122] ------------[ cut here ]------------
| [   92.567183] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/199
| [   92.567269] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [   92.567442] Tainted: [W]=WARN
[   92.567497] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.567569] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   92.567633] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   92.567765] RSP: 0018:ff5579a480377d30 EFLAGS: 00010286
[   92.567828] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   92.567906] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281dd5a00
[   92.567981] RBP: 0000000000000000 R08: ff422c9283178f10 R09: ff422c9284673030
[   92.568064] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[   92.568140] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9281dd5a00
[   92.568221] FS:  0000000025bbd400(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[   92.568299] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.568375] CR2: 00007f9b473b8000 CR3: 000000000332e006 CR4: 0000000000771ef0
[   92.568454] PKRU: 55555554
[   92.568502] Call Trace:
[   92.568551]  <TASK>
[   92.568599]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   92.568656]  __dev_notify_flags (net/core/dev.c:9787)
[   92.568714]  netif_change_flags (net/core/dev.c:9820)
[   92.568772]  dev_change_flags (net/core/dev_api.c:68)
[   92.568831]  dev_ioctl (net/core/dev_ioctl.c:816)
[   92.568888]  sock_do_ioctl (net/socket.c:1327)
[   92.568946]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[   92.569003]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   92.569069]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   92.569126]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   92.569190] RIP: 0033:0x47cc8d
[   92.569245] 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 
[   92.569386] RSP: 002b:00007ffe0e4f17d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   92.569465] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[   92.569542] RDX: 00007ffe0e4f1840 RSI: 0000000000008914 RDI: 0000000000000007
[   92.569618] RBP: 00007ffe0e4f1820 R08: 0000000000000021 R09: 0000000025bbe450
[   92.569695] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffe0e4f1d08
[   92.569788] R13: 00007ffe0e4f1d48 R14: 0000000000000002 R15: 0000000000543540
| [  102.551999] ------------[ cut here ]------------
| [  102.552289] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/199
| [  102.552397] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  102.552570] Tainted: [W]=WARN
[  102.552626] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  102.552697] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  102.552761] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  102.552897] RSP: 0018:ff5579a480377b50 EFLAGS: 00010286
[  102.552961] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  102.553037] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283051e00
[  102.553118] RBP: 0000000000000000 R08: ff422c9283178f10 R09: ff422c9284673030
[  102.553194] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[  102.553271] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9283051e00
[  102.553352] FS:  0000000000000000(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[  102.553439] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.553510] CR2: 00007f9b473b8000 CR3: 0000000022c42003 CR4: 0000000000771ef0
[  102.553589] PKRU: 55555554
[  102.553637] Call Trace:
[  102.553687]  <TASK>
[  102.553736]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  102.553793]  netif_close_many (net/core/dev.c:1804)
[  102.553852]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  102.553915]  ? __queue_work (kernel/workqueue.c:2401)
[  102.553975]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  102.554039] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  102.554102] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  102.554159]  __fput (fs/file_table.c:510)
[  102.554217]  task_work_run (kernel/task_work.c:233)
[  102.554275]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  102.554334]  do_group_exit (kernel/exit.c:1119)
[  102.554397]  get_signal (kernel/signal.c:3037)
[  102.554454]  ? sysvec_reschedule_ipi (./arch/x86/include/asm/apic.h:410 (discriminator 1) arch/x86/kernel/smp.c:251 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1))
[  102.554519]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  102.554586]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  102.554652]  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)
[  102.554710]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[  102.554775]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  102.554839] RIP: 0033:0x47fb83
[  102.554897] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[  102.554967] RSP: 002b:00007ffe0e4f12a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  102.555044] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[  102.555124] RDX: 000000000000000e RSI: bfe4762a0f6cc5c2 RDI: 0000000000000008
[  102.555201] RBP: 00007ffe0e4f17a0 R08: 0000000000000041 R09: 0000000025bbe450
[  102.555277] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[  102.555354] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [  102.555609] ------------[ cut here ]------------
| [  102.555673] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/199
| [  102.555758] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  102.555931] Tainted: [W]=WARN
[  102.555985] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  102.556064] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  102.556127] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  102.556258] RSP: 0018:ff5579a480377bc0 EFLAGS: 00010286
[  102.556321] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  102.556406] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283051e00
[  102.556481] RBP: 0000000000000000 R08: ff422c9283178f10 R09: ff422c92884e5030
[  102.556556] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[  102.556632] R13: 0000000000000011 R14: ff422c9284594000 R15: ff422c9283051e00
[  102.556713] FS:  0000000000000000(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[  102.556794] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.556865] CR2: 00007f9b473b8000 CR3: 0000000022c42003 CR4: 0000000000771ef0
[  102.556945] PKRU: 55555554
[  102.556992] Call Trace:
[  102.557041]  <TASK>
[  102.557242]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  102.557313]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  102.557377] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  102.557440] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  102.557497]  __fput (fs/file_table.c:510)
[  102.557555]  task_work_run (kernel/task_work.c:233)
[  102.557612]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  102.557670]  do_group_exit (kernel/exit.c:1119)
[  102.557726]  get_signal (kernel/signal.c:3037)
[  102.557783]  ? sysvec_reschedule_ipi (./arch/x86/include/asm/apic.h:410 (discriminator 1) arch/x86/kernel/smp.c:251 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1))
[  102.557849]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  102.557914]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  102.557978]  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)
[  102.558035]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[  102.558103]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  102.558166] RIP: 0033:0x47fb83
[  102.558222] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[  102.558290] RSP: 002b:00007ffe0e4f12a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  102.558368] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[  102.558449] RDX: 000000000000000e RSI: bfe4762a0f6cc5c2 RDI: 0000000000000008
[  102.558525] RBP: 00007ffe0e4f17a0 R08: 0000000000000041 R09: 0000000025bbe450
[  102.558601] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[  102.558676] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [  102.567122] ------------[ cut here ]------------
| [  102.567155] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/65
| [  102.567220] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  102.567332] Tainted: [W]=WARN
[  102.567355] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  102.567392] Workqueue: netns cleanup_net
[  102.567417] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  102.567447] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  102.567544] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[  102.567579] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  102.567627] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[  102.567666] RBP: 0000000000000000 R08: ff422c928306d790 R09: ff422c928915602c
[  102.567700] R10: ff422c9281fe9120 R11: fefefefefefefeff R12: 0000000000000000
[  102.567740] R13: 0000000000000011 R14: ff422c9281fe9000 R15: ff422c9281e27600
[  102.567781] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[  102.567828] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.567865] CR2: 00007fd1a9bb56f0 CR3: 0000000002f6f004 CR4: 0000000000771ef0
[  102.567904] PKRU: 55555554
[  102.567916] Call Trace:
[  102.567932]  <TASK>
[  102.567947]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  102.567978]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  102.568007]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  102.568032]  cleanup_net (net/core/net_namespace.c:702)
[  102.568060]  process_one_work (kernel/workqueue.c:3314)
[  102.568084]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  102.568110]  ? rescuer_thread (kernel/workqueue.c:3672)
[  102.568130]  kthread (kernel/kthread.c:436)
[  102.568153]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[  102.568178]  ret_from_fork (arch/x86/kernel/process.c:158)
[  102.568201]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[  102.568226]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  102.571657] ------------[ cut here ]------------
| [  102.571694] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: unshare/202
| [  102.571744] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  102.571862] Tainted: [W]=WARN
[  102.571885] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  102.571924] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  102.571955] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  102.572033] RSP: 0018:ff5579a48036fcc0 EFLAGS: 00010286
[  102.572071] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  102.572115] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283051f00
[  102.572153] RBP: 0000000000000000 R08: ff422c9281950e50 R09: ff422c9286ef302c
[  102.572197] R10: ff422c9282eaa120 R11: fefefefefefefeff R12: 0000000000000000
[  102.572236] R13: 0000000000000010 R14: ff422c9282eaa000 R15: ff422c9283051f00
[  102.572280] FS:  00007f3e1c6c3740(0000) GS:ff422c933130c000(0000) knlGS:0000000000000000
[  102.572323] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.572351] CR2: 000055fa39279008 CR3: 000000000264e003 CR4: 0000000000771ef0
[  102.572401] PKRU: 55555554
[  102.572417] Call Trace:
[  102.572434]  <TASK>
[  102.572448]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  102.572471]  register_netdevice (net/core/dev.c:11488)
[  102.572494]  register_netdev (net/core/dev.c:11552)
[  102.572515]  loopback_net_init (drivers/net/loopback.c:218)
[  102.572540]  ops_init (net/core/net_namespace.c:137)
[  102.572563]  setup_net (net/core/net_namespace.c:446)
[  102.572583]  copy_net_ns (net/core/net_namespace.c:579)
[  102.572604]  create_new_namespaces (kernel/nsproxy.c:132)
[  102.572635]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[  102.572666]  ksys_unshare (kernel/fork.c:3243)
[  102.572686]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[  102.572710]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  102.572731]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  102.572749]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  102.572778] RIP: 0033:0x7f3e1c7bebcb
[  102.572798] 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
[  102.572890] RSP: 002b:00007ffd00b39c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  102.572927] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3e1c7bebcb
[  102.572966] RDX: 0000000000000000 RSI: 00007ffd00b399a0 RDI: 0000000040000000
[  102.573006] RBP: 00007ffd00b39fc0 R08: 00007ffd00b39b90 R09: 0000000000000000
[  102.573045] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  102.573092] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055fa01cebb68
| [  102.574003] ------------[ cut here ]------------
| [  102.574072] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/202
| [  102.574158] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  102.574327] Tainted: [W]=WARN
[  102.574382] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  102.574456] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  102.574520] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  102.574649] RSP: 0018:ff5579a48036fd68 EFLAGS: 00010286
[  102.574715] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  102.574793] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283051e00
[  102.574870] RBP: 0000000000000000 R08: ff422c92831e6010 R09: ff422c9281e94030
[  102.574944] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[  102.575020] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9283051e00
[  102.575105] FS:  0000000011e60400(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[  102.575182] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.575251] CR2: 00007fc6ac2ed000 CR3: 0000000003225001 CR4: 0000000000771ef0
[  102.575329] PKRU: 55555554
[  102.575376] Call Trace:
[  102.575431]  <TASK>
[  102.575480]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  102.575536]  register_netdevice (net/core/dev.c:11488)
[  102.575594] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[  102.575660]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  102.575718]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  102.575775]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  102.575835]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  102.575899] RIP: 0033:0x47cc8d
[  102.575956] 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 
[  102.576092] RSP: 002b:00007ffedf2548f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  102.576170] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  102.576248] RDX: 00007ffedf254970 RSI: 00000000400454ca RDI: 0000000000000006
[  102.576327] RBP: 00007ffedf254940 R08: 0000000000000000 R09: 0000000000000000
[  102.576410] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffedf254e48
[  102.576488] R13: 00007ffedf254e88 R14: 0000000000000002 R15: 0000000000543540
| [  102.576694] ------------[ cut here ]------------
| [  102.576757] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/202
| [  102.576844] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  102.577015] Tainted: [W]=WARN
[  102.577077] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  102.577145] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  102.577209] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  102.577344] RSP: 0018:ff5579a48036fd60 EFLAGS: 00010286
[  102.577413] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[  102.577490] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283051e00
[  102.577565] RBP: 0000000000000002 R08: ff422c92831e6010 R09: ff422c9281e94030
[  102.577641] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[  102.577717] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9283051e00
[  102.577797] FS:  0000000011e60400(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[  102.577875] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.577945] CR2: 00007fc6ac2ed000 CR3: 0000000003225001 CR4: 0000000000771ef0
[  102.578024] PKRU: 55555554
[  102.578079] Call Trace:
[  102.578127]  <TASK>
[  102.578176]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  102.578233]  notifier_call_chain (kernel/notifier.c:85)
[  102.578292]  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)
[  102.578356] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[  102.578430]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  102.578486]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  102.578543]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  102.578600]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  102.578663] RIP: 0033:0x47cc8d
[  102.578719] 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 
[  102.578852] RSP: 002b:00007ffedf254930 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  102.578930] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  102.579006] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[  102.579087] RBP: 00007ffedf254980 R08: 0000000000000005 R09: 0000000000001ff0
[  102.579162] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffedf254e48
[  102.579238] R13: 00007ffedf254e88 R14: 0000000000000002 R15: 0000000000543540
| [  102.579449] ------------[ cut here ]------------
| [  102.579510] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/202
| [  102.579597] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  102.579766] Tainted: [W]=WARN
[  102.579820] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  102.579889] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  102.579953] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  102.580091] RSP: 0018:ff5579a48036fc10 EFLAGS: 00010286
[  102.580154] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[  102.580231] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9283051e00
[  102.580306] RBP: 0000000000000000 R08: ff422c92831e6010 R09: ff422c9287717030
[  102.580384] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[  102.580466] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c9283051e00
[  102.580546] FS:  0000000011e60400(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[  102.580625] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.580693] CR2: 00007fc6ac2ed000 CR3: 0000000003225001 CR4: 0000000000771ef0
[  102.580770] PKRU: 55555554
[  102.580817] Call Trace:
[  102.580865]  <TASK>
[  102.580913]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  102.580971]  __dev_notify_flags (net/core/dev.c:9787)
[  102.581029]  netif_change_flags (net/core/dev.c:9820)
[  102.581090]  dev_change_flags (net/core/dev_api.c:68)
[  102.581147]  devinet_ioctl (net/ipv4/devinet.c:1199)
[  102.581206]  inet_ioctl (net/ipv4/af_inet.c:1011)
[  102.581263]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[  102.581320]  sock_do_ioctl (net/socket.c:1313)
[  102.581378]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  102.581438]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  102.581495]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  102.581551]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  102.581614] RIP: 0033:0x47cc8d
[  102.581670] 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 
[  102.581804] RSP: 002b:00007ffedf254910 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  102.581881] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  102.581957] RDX: 00007ffedf254980 RSI: 0000000000008914 RDI: 0000000000000007
[  102.582032] RBP: 00007ffedf254960 R08: 0000000000000005 R09: 0000000000001ff0
[  102.582115] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffedf254e48
[  102.582190] R13: 00007ffedf254e88 R14: 0000000000000002 R15: 0000000000543540
| [  112.570453] ------------[ cut here ]------------
| [  112.570611] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/202
| [  112.570705] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  112.570877] Tainted: [W]=WARN
[  112.570934] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  112.571006] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  112.571237] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  112.571371] RSP: 0018:ff5579a48036fb50 EFLAGS: 00010286
[  112.571447] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  112.571551] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c928307d000
[  112.571631] RBP: 0000000000000000 R08: ff422c92831e6010 R09: ff422c9287717030
[  112.571710] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[  112.571786] R13: 0000000000000010 R14: ff422c9284594000 R15: ff422c928307d000
[  112.571868] FS:  0000000000000000(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[  112.571945] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.572014] CR2: 00007fc6ac2ed000 CR3: 0000000022c42004 CR4: 0000000000771ef0
[  112.572097] PKRU: 55555554
[  112.572144] Call Trace:
[  112.572193]  <TASK>
[  112.572242]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  112.572299]  netif_close_many (net/core/dev.c:1804)
[  112.572357]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  112.572428]  ? __queue_work (kernel/workqueue.c:2401)
[  112.572488]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  112.572552] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  112.572611] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  112.572668]  __fput (fs/file_table.c:510)
[  112.572727]  task_work_run (kernel/task_work.c:233)
[  112.572784]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  112.572845]  do_group_exit (kernel/exit.c:1119)
[  112.572901]  get_signal (kernel/signal.c:3037)
[  112.572959]  ? sysvec_reschedule_ipi (./arch/x86/include/asm/apic.h:410 (discriminator 1) arch/x86/kernel/smp.c:251 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1))
[  112.573023]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  112.573095]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  112.573160]  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)
[  112.573218]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  112.573281] RIP: 0033:0x47fb83
[  112.573337] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[  112.573406] RSP: 002b:00007ffedf2543e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  112.573492] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[  112.573568] RDX: 000000000000000e RSI: 5f0394de4b851940 RDI: 0000000000000008
[  112.573643] RBP: 00007ffedf2548e0 R08: 0000000000000041 R09: 0000000011e61450
[  112.573718] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[  112.573795] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [  112.574043] ------------[ cut here ]------------
| [  112.574113] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/202
| [  112.574198] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  112.574366] Tainted: [W]=WARN
[  112.574427] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  112.574495] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  112.574559] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  112.574693] RSP: 0018:ff5579a48036fbc0 EFLAGS: 00010286
[  112.574757] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  112.574834] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c928307d000
[  112.574909] RBP: 0000000000000000 R08: ff422c92831e6010 R09: ff422c9286f6d830
[  112.574985] R10: ff422c9284594120 R11: fefefefefefefeff R12: 0000000000000000
[  112.575260] R13: 0000000000000011 R14: ff422c9284594000 R15: ff422c928307d000
[  112.575344] FS:  0000000000000000(0000) GS:ff422c933138c000(0000) knlGS:0000000000000000
[  112.575427] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.575496] CR2: 00007fc6ac2ed000 CR3: 0000000022c42004 CR4: 0000000000771ef0
[  112.575575] PKRU: 55555554
[  112.575622] Call Trace:
[  112.575670]  <TASK>
[  112.575718]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  112.575783]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  112.575857] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  112.575914] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  112.575970]  __fput (fs/file_table.c:510)
[  112.576027]  task_work_run (kernel/task_work.c:233)
[  112.576088]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  112.576145]  do_group_exit (kernel/exit.c:1119)
[  112.576202]  get_signal (kernel/signal.c:3037)
[  112.576258]  ? sysvec_reschedule_ipi (./arch/x86/include/asm/apic.h:410 (discriminator 1) arch/x86/kernel/smp.c:251 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1))
[  112.576322]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  112.576387]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  112.576457]  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)
[  112.576514]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  112.576577] RIP: 0033:0x47fb83
[  112.576633] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[  112.576701] RSP: 002b:00007ffedf2543e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  112.576778] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[  112.576857] RDX: 000000000000000e RSI: 5f0394de4b851940 RDI: 0000000000000008
[  112.576935] RBP: 00007ffedf2548e0 R08: 0000000000000041 R09: 0000000011e61450
[  112.577011] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[  112.577092] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [  112.585122] ------------[ cut here ]------------
| [  112.585155] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/65
| [  112.585221] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  112.585326] Tainted: [W]=WARN
[  112.585353] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  112.585388] Workqueue: netns cleanup_net
[  112.587460] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  112.587503] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  112.587594] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[  112.587618] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  112.587670] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[  112.587709] RBP: 0000000000000000 R08: ff422c9281950e50 R09: ff422c9282ec602c
[  112.587757] R10: ff422c9282eaa120 R11: fefefefefefefeff R12: 0000000000000000
[  112.587796] R13: 0000000000000011 R14: ff422c9282eaa000 R15: ff422c9281e27600
[  112.587841] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[  112.587883] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.587921] CR2: 00007fd1a9bb56f0 CR3: 0000000022c42002 CR4: 0000000000771ef0
[  112.587968] PKRU: 55555554
[  112.587984] Call Trace:
[  112.587998]  <TASK>
[  112.588013]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  112.588040]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  112.588074]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  112.588093]  cleanup_net (net/core/net_namespace.c:702)
[  112.588121]  process_one_work (kernel/workqueue.c:3314)
[  112.588141]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  112.588171]  ? rescuer_thread (kernel/workqueue.c:3672)
[  112.588190]  kthread (kernel/kthread.c:436)
[  112.588215]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[  112.588252]  ret_from_fork (arch/x86/kernel/process.c:158)
[  112.588278]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[  112.588296]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  112.590180] ------------[ cut here ]------------
| [  112.590211] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/204
| [  112.590267] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  112.590359] Tainted: [W]=WARN
[  112.590380] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  112.590420] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  112.590452] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  112.590545] RSP: 0018:ff5579a4803afcc0 EFLAGS: 00010286
[  112.590576] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  112.590614] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[  112.590657] RBP: 0000000000000000 R08: ff422c928318b110 R09: ff422c9282ea902c
[  112.590695] R10: ff422c9287712120 R11: fefefefefefefeff R12: 0000000000000000
[  112.590734] R13: 0000000000000010 R14: ff422c9287712000 R15: ff422c92830be000
[  112.590778] FS:  00007f2360d65740(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[  112.590820] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.590859] CR2: 000055d570c61400 CR3: 00000000033ed003 CR4: 0000000000771ef0
[  112.590899] PKRU: 55555554
[  112.590914] Call Trace:
[  112.590928]  <TASK>
[  112.590948]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  112.590973]  register_netdevice (net/core/dev.c:11488)
[  112.590996]  register_netdev (net/core/dev.c:11552)
[  112.591018]  loopback_net_init (drivers/net/loopback.c:218)
[  112.591044]  ops_init (net/core/net_namespace.c:137)
[  112.591078]  setup_net (net/core/net_namespace.c:446)
[  112.591101]  copy_net_ns (net/core/net_namespace.c:579)
[  112.591126]  create_new_namespaces (kernel/nsproxy.c:132)
[  112.591155]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[  112.591179]  ksys_unshare (kernel/fork.c:3243)
[  112.591205]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[  112.591223]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  112.591243]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  112.591265]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  112.591294] RIP: 0033:0x7f2360e60bcb
[  112.591317] 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
[  112.591416] RSP: 002b:00007ffed3fae108 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  112.591459] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2360e60bcb
[  112.591500] RDX: 0000000000000000 RSI: 00007ffed3fade70 RDI: 0000000040000000
[  112.591540] RBP: 00007ffed3fae490 R08: 00007ffed3fae060 R09: 0000000000000000
[  112.591580] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  112.591648] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055b3edd73b68
| [  112.592352] ------------[ cut here ]------------
| [  112.592379] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
| [  112.592441] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  112.592542] Tainted: [W]=WARN
[  112.592562] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  112.592596] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  112.592620] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  112.592718] RSP: 0018:ff5579a4803afd68 EFLAGS: 00010286
[  112.592741] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  112.592781] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[  112.592823] RBP: 0000000000000000 R08: ff422c92831e6c90 R09: ff422c9281fe8030
[  112.592861] R10: ff422c92844c4120 R11: fefefefefefefeff R12: 0000000000000000
[  112.592902] R13: 0000000000000010 R14: ff422c92844c4000 R15: ff422c92830be000
[  112.592943] FS:  0000000028595400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[  112.592984] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.593014] CR2: 00007fe75d143000 CR3: 000000000329e004 CR4: 0000000000771ef0
[  112.593048] PKRU: 55555554
[  112.593066] Call Trace:
[  112.593079]  <TASK>
[  112.593097]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  112.593124]  register_netdevice (net/core/dev.c:11488)
[  112.593147] __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157) tun
[  112.593180]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  112.593201]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  112.593225]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  112.593247]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  112.593273] RIP: 0033:0x47cc8d
[  112.593294] 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 
[  112.593389] RSP: 002b:00007ffe21a68110 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  112.593434] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  112.593474] RDX: 00007ffe21a68190 RSI: 00000000400454ca RDI: 0000000000000006
[  112.593514] RBP: 00007ffe21a68160 R08: 0000000000000000 R09: 0000000000000000
[  112.593554] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe21a68668
[  112.593592] R13: 00007ffe21a686a8 R14: 0000000000000002 R15: 0000000000543540
| [  112.596825] ------------[ cut here ]------------
| [  112.596854] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: ifconfig/205
| [  112.596909] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  112.597011] Tainted: [W]=WARN
[  112.597034] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  112.597074] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  112.597105] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  112.597196] RSP: 0018:ff5579a4803b7c78 EFLAGS: 00010286
[  112.597252] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[  112.597295] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[  112.597336] RBP: 0000000000000000 R08: ff422c92831e6c90 R09: ff422c9286ef5030
[  112.597371] R10: ff422c92844c4120 R11: fefefefefefefeff R12: 0000000000000000
[  112.597410] R13: 0000000000000010 R14: ff422c92844c4000 R15: ff422c9281e27600
[  112.597459] FS:  00007fbd590f4740(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[  112.597498] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.597537] CR2: 00005605b57b65fa CR3: 0000000003217004 CR4: 0000000000771ef0
[  112.597578] PKRU: 55555554
[  112.597593] Call Trace:
[  112.597608]  <TASK>
[  112.597624]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  112.597646]  notifier_call_chain (kernel/notifier.c:85)
[  112.597671]  netif_set_mtu_ext (net/core/dev.c:2324 net/core/dev.c:9889)
[  112.597689]  ? sk_ioctl (net/core/sock.c:4476 (discriminator 3) net/core/sock.c:4504 (discriminator 3))
[  112.597713]  netif_set_mtu (net/core/dev.c:9910)
[  112.597735]  dev_set_mtu (net/core/dev_api.c:249)
[  112.597757]  dev_ioctl (net/core/dev_ioctl.c:816)
[  112.597780]  sock_do_ioctl (net/socket.c:1327)
[  112.597807]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  112.597832]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  112.597855]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  112.597877]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  112.597907] RIP: 0033:0x7fbd591ea5fd
[  112.597930] 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 
[  112.598031] RSP: 002b:00007ffd3abe47f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  112.598075] RAX: ffffffffffffffda RBX: 00007ffd3abe6857 RCX: 00007fbd591ea5fd
[  112.598116] RDX: 00007ffd3abe48a0 RSI: 0000000000008922 RDI: 0000000000000008
[  112.598157] RBP: 00007ffd3abe4840 R08: 0000000000000000 R09: 00007ffd3abe685b
[  112.598197] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd3abe4bd8
[  112.598244] R13: 0000000000000004 R14: 00007fbd59338000 R15: 00005605b57b4918
| [  112.598390] ------------[ cut here ]------------
| [  112.598424] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
| [  112.598477] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  112.598577] Tainted: [W]=WARN
[  112.598599] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  112.598633] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  112.598661] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  112.598756] RSP: 0018:ff5579a4803afd60 EFLAGS: 00010286
[  112.598785] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[  112.598832] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[  112.598875] RBP: 0000000000000002 R08: ff422c92831e6c90 R09: ff422c9281fe8030
[  112.598914] R10: ff422c92844c4120 R11: fefefefefefefeff R12: 0000000000000000
[  112.598953] R13: 0000000000000010 R14: ff422c92844c4000 R15: ff422c92830be000
[  112.599002] FS:  0000000028595400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[  112.599046] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.599080] CR2: 00007fe75d143000 CR3: 000000000329e004 CR4: 0000000000771ef0
[  112.599125] PKRU: 55555554
[  112.599139] Call Trace:
[  112.599154]  <TASK>
[  112.599168]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  112.599189]  notifier_call_chain (kernel/notifier.c:85)
[  112.599208]  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)
[  112.599237] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) tun
[  112.599266]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  112.599288]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  112.599309]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  112.599331]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  112.599358] RIP: 0033:0x47cc8d
[  112.599377] 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 
[  112.599481] RSP: 002b:00007ffe21a68150 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  112.599522] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  112.599563] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000006
[  112.599603] RBP: 00007ffe21a681a0 R08: 0000000000000021 R09: 0000000028596450
[  112.599649] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffe21a68668
[  112.599691] R13: 00007ffe21a686a8 R14: 0000000000000002 R15: 0000000000543540
| [  112.599790] ------------[ cut here ]------------
| [  112.599821] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
| [  112.599870] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  112.599970] Tainted: [W]=WARN
[  112.599990] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  112.600022] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  112.600053] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  112.600158] RSP: 0018:ff5579a4803afd30 EFLAGS: 00010286
[  112.600189] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[  112.600230] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c92830be000
[  112.600274] RBP: 0000000000000000 R08: ff422c92831e6c90 R09: ff422c9282ea8030
[  112.600317] R10: ff422c92844c4120 R11: fefefefefefefeff R12: 0000000000000000
[  112.600360] R13: 0000000000000010 R14: ff422c92844c4000 R15: ff422c92830be000
[  112.600400] FS:  0000000028595400(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[  112.600445] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.600480] CR2: 00007fe75d143000 CR3: 000000000329e004 CR4: 0000000000771ef0
[  112.600520] PKRU: 55555554
[  112.600533] Call Trace:
[  112.600544]  <TASK>
[  112.600558]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  112.600580]  __dev_notify_flags (net/core/dev.c:9787)
[  112.600601]  netif_change_flags (net/core/dev.c:9820)
[  112.600622]  dev_change_flags (net/core/dev_api.c:68)
[  112.600642]  dev_ioctl (net/core/dev_ioctl.c:816)
[  112.600665]  sock_do_ioctl (net/socket.c:1327)
[  112.600687]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  112.600705]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  112.600725]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  112.600749]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  112.600780] RIP: 0033:0x47cc8d
[  112.600804] 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 
[  112.600894] RSP: 002b:00007ffe21a68130 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  112.600934] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 000000000047cc8d
[  112.600972] RDX: 00007ffe21a681a0 RSI: 0000000000008914 RDI: 0000000000000007
[  112.601014] RBP: 00007ffe21a68180 R08: 0000000000000021 R09: 0000000028596450
[  112.601053] R10: 0000000000000020 R11: 0000000000000246 R12: 00007ffe21a68668
[  112.601098] R13: 00007ffe21a686a8 R14: 0000000000000002 R15: 0000000000543540
| [  122.589097] ------------[ cut here ]------------
| [  122.589180] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
| [  122.589250] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  122.589358] Tainted: [W]=WARN
[  122.589378] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  122.589413] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  122.589444] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  122.589548] RSP: 0018:ff5579a4803afb88 EFLAGS: 00010286
[  122.589576] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  122.589616] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c928307d200
[  122.589659] RBP: 0000000000000000 R08: ff422c92831e6c90 R09: ff422c9282ea8030
[  122.589700] R10: ff422c92844c4120 R11: fefefefefefefeff R12: 0000000000000000
[  122.589741] R13: 0000000000000010 R14: ff422c92844c4000 R15: ff422c928307d200
[  122.589783] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[  122.589824] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  122.589860] CR2: 00007f8e7e3946f0 CR3: 0000000022c42005 CR4: 0000000000771ef0
[  122.589903] PKRU: 55555554
[  122.589919] Call Trace:
[  122.589934]  <TASK>
[  122.589949]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  122.589968]  netif_close_many (net/core/dev.c:1804)
[  122.589991]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  122.590019]  ? __queue_work (kernel/workqueue.c:2401)
[  122.590043]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  122.590076] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  122.590100] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  122.590120]  __fput (fs/file_table.c:510)
[  122.590144]  task_work_run (kernel/task_work.c:233)
[  122.590167]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  122.590191]  do_group_exit (kernel/exit.c:1119)
[  122.590218]  get_signal (kernel/signal.c:3037)
[  122.590241]  ? save_fpregs_to_fpstate (arch/x86/kernel/fpu/xstate.h:224 arch/x86/kernel/fpu/core.c:144)
[  122.590271]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  122.590301]  ? __schedule (kernel/sched/core.c:5391 kernel/sched/core.c:7189)
[  122.590325]  ? schedule (kernel/sched/core.c:7268 kernel/sched/core.c:7283)
[  122.590346]  irqentry_exit (kernel/entry/common.c:64 kernel/entry/common.c:98 ./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:244 ./include/linux/irq-entry-common.h:315 kernel/entry/common.c:162)
[  122.590368]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[  122.590397]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  122.590426] RIP: 0033:0x47ea2b
[  122.590458] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[  122.590494] RSP: 002b:00007ffe21a67bb8 EFLAGS: 00000206
[  122.590520] RAX: 0000000000000008 RBX: 00007ffe21a67c90 RCX: 000000000047ea2b
[  122.590562] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[  122.590606] RBP: 00007ffe21a67bf0 R08: 0000000000000041 R09: 0000000028596450
[  122.590651] R10: 0000000000000040 R11: 0000000000000206 R12: 00007ffe21a68668
[  122.590690] R13: 00007ffe21a686a8 R14: 00007ffe21a68168 R15: 0000000000543540
| [  122.590824] ------------[ cut here ]------------
| [  122.590853] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
| [  122.590905] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  122.590995] Tainted: [W]=WARN
[  122.591015] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  122.591052] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  122.591082] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  122.591177] RSP: 0018:ff5579a4803afbf8 EFLAGS: 00010286
[  122.591204] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  122.591244] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c928307d200
[  122.591286] RBP: 0000000000000000 R08: ff422c92831e6c90 R09: ff422c9289373830
[  122.591332] R10: ff422c92844c4120 R11: fefefefefefefeff R12: 0000000000000000
[  122.591377] R13: 0000000000000011 R14: ff422c92844c4000 R15: ff422c928307d200
[  122.591422] FS:  0000000000000000(0000) GS:ff422c933140c000(0000) knlGS:0000000000000000
[  122.591470] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  122.591511] CR2: 00007f8e7e3946f0 CR3: 0000000022c42005 CR4: 0000000000771ef0
[  122.591551] PKRU: 55555554
[  122.591563] Call Trace:
[  122.591575]  <TASK>
[  122.591589]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  122.591616]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  122.591645] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) tun
[  122.591664] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) tun
[  122.591684]  __fput (fs/file_table.c:510)
[  122.591703]  task_work_run (kernel/task_work.c:233)
[  122.591725]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  122.591746]  do_group_exit (kernel/exit.c:1119)
[  122.591768]  get_signal (kernel/signal.c:3037)
[  122.591789]  ? save_fpregs_to_fpstate (arch/x86/kernel/fpu/xstate.h:224 arch/x86/kernel/fpu/core.c:144)
[  122.591818]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  122.591846]  ? __schedule (kernel/sched/core.c:5391 kernel/sched/core.c:7189)
[  122.591871]  ? schedule (kernel/sched/core.c:7268 kernel/sched/core.c:7283)
[  122.591892]  irqentry_exit (kernel/entry/common.c:64 kernel/entry/common.c:98 ./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:244 ./include/linux/irq-entry-common.h:315 kernel/entry/common.c:162)
[  122.591910]  ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1067)
[  122.591939]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  122.591968] RIP: 0033:0x47ea2b
[  122.591990] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[  122.592024] RSP: 002b:00007ffe21a67bb8 EFLAGS: 00000206
[  122.592058] RAX: 0000000000000008 RBX: 00007ffe21a67c90 RCX: 000000000047ea2b
[  122.592100] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[  122.592143] RBP: 00007ffe21a67bf0 R08: 0000000000000041 R09: 0000000028596450
[  122.592184] R10: 0000000000000040 R11: 0000000000000206 R12: 00007ffe21a68668
[  122.592228] R13: 00007ffe21a686a8 R14: 00007ffe21a68168 R15: 0000000000543540
| [  122.613123] ------------[ cut here ]------------
| [  122.613213] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/65
| [  122.613275] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 tun
| [  122.613376] Tainted: [W]=WARN
[  122.613399] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  122.613428] Workqueue: netns cleanup_net
[  122.613454] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  122.613483] Code: 80 00 00 00 e8 59 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 e6 ab fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	59                   	pop    %rcx
   6:	d9 ff                	fcos
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e6 ab fb ff       	call   0xfffffffffffbac22
  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:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[  122.613572] RSP: 0018:ff5579a48023fc78 EFLAGS: 00010286
[  122.613759] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  122.613810] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff422c9281e27600
[  122.613845] RBP: 0000000000000000 R08: ff422c928318b110 R09: ff422c92884fb82c
[  122.613888] R10: ff422c9287712120 R11: fefefefefefefeff R12: 0000000000000000
[  122.613924] R13: 0000000000000011 R14: ff422c9287712000 R15: ff422c9281e27600
[  122.613969] FS:  0000000000000000(0000) GS:ff422c933128c000(0000) knlGS:0000000000000000
[  122.614014] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  122.614052] CR2: 00007fbd591b82a0 CR3: 0000000022c42005 CR4: 0000000000771ef0
[  122.614113] PKRU: 55555554
[  122.614129] Call Trace:
[  122.614144]  <TASK>
[  122.614161]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  122.614193]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  122.614222]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  122.614243]  cleanup_net (net/core/net_namespace.c:702)
[  122.614265]  process_one_work (kernel/workqueue.c:3314)
[  122.614289]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  122.614311]  ? rescuer_thread (kernel/workqueue.c:3672)
[  122.614332]  kthread (kernel/kthread.c:436)
[  122.614355]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[  122.614375]  ret_from_fork (arch/x86/kernel/process.c:158)
[  122.614398]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))


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