======================================
| xx__-> [    2.209247] ------------[ cut here ]------------
| [    2.209334] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: unshare/158
| [    2.209437] Modules linked in:
| [    2.209592] Tainted: [W]=WARN
[    2.209662] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.209749] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.209815] 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 76 b2 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 76 b2 fb ff       	call   0xfffffffffffbb2b2
  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 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.209953] RSP: 0018:ff6b73adc03efcc8 EFLAGS: 00010286
[    2.210032] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.210128] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1c7230831eab00
[    2.210226] RBP: 0000000000000000 R08: ff1c72308315dd90 R09: ff1c723084a9202c
[    2.210313] R10: ff1c72308311d118 R11: fefefefefefefeff R12: 0000000000000000
[    2.210399] R13: 0000000000000010 R14: ff1c72308311d000 R15: ff1c7230831eab00
[    2.210487] FS:  00007fc01da44740(0000) GS:ff1c723122196000(0000) knlGS:0000000000000000
[    2.210584] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.210653] CR2: 00005639cf727310 CR3: 0000000003344003 CR4: 0000000000771ef0
[    2.210735] PKRU: 55555554
[    2.210783] Call Trace:
[    2.210834]  <TASK>
[    2.210883]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.210939]  register_netdevice (net/core/dev.c:11488)
[    2.211002]  register_netdev (net/core/dev.c:11552)
[    2.211059]  loopback_net_init (drivers/net/loopback.c:218)
[    2.211127]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.211198]  ops_init (net/core/net_namespace.c:137)
[    2.211257]  setup_net (net/core/net_namespace.c:446)
[    2.211314]  copy_net_ns (net/core/net_namespace.c:579)
[    2.211371]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.211436]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.211500]  ksys_unshare (kernel/fork.c:3243)
[    2.211559]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.211617]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.211676]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.211741] RIP: 0033:0x7fc01db3fbcb
[    2.211798] 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
[    2.211930] RSP: 002b:00007ffdc7a5b338 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.212009] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc01db3fbcb
[    2.212092] RDX: 0000000000000000 RSI: 00007ffdc7a5b0a0 RDI: 0000000040000000
[    2.212174] RBP: 00007ffdc7a5b6c0 R08: 00007ffdc7a5b290 R09: 0000000000000000
[    2.212251] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.212328] R13: 0000000000000000 R14: 00000000ffffffff R15: 00005639cf72ab68
| [    2.215715] ------------[ cut here ]------------
| [    2.215783] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/158
| [    2.215870] Modules linked in:
| [    2.216018] Tainted: [W]=WARN
[    2.216073] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.216156] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.216220] 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 76 b2 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 76 b2 fb ff       	call   0xfffffffffffbb2b2
  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 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.216353] RSP: 0018:ff6b73adc03efd68 EFLAGS: 00010286
[    2.216415] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.216493] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1c7230831eab00
[    2.216568] RBP: 0000000000000000 R08: ff1c723084821850 R09: ff1c723084a97030
[    2.216645] R10: ff1c723084934118 R11: fefefefefefefeff R12: 0000000000000000
[    2.216723] R13: 0000000000000010 R14: ff1c723084934000 R15: ff1c7230831eab00
[    2.216805] FS:  000000001e239400(0000) GS:ff1c723122196000(0000) knlGS:0000000000000000
[    2.216884] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.216953] CR2: 00007f45262c3000 CR3: 0000000001eaf004 CR4: 0000000000771ef0
[    2.217031] PKRU: 55555554
[    2.217079] Call Trace:
[    2.217137]  <TASK>
[    2.217191]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.217248]  register_netdevice (net/core/dev.c:11488)
[    2.217306]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.217365]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.217424]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.217483]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.217541]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.217605] RIP: 0033:0x47cc8d
[    2.217661] 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 
[    2.217793] RSP: 002b:00007ffd49737ef0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.217871] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.217948] RDX: 00007ffd49737f70 RSI: 00000000400454ca RDI: 0000000000000005
[    2.218026] RBP: 00007ffd49737f40 R08: 0000000000000000 R09: 0000000000000000
[    2.218109] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd49738448
[    2.218198] R13: 00007ffd497384c8 R14: 0000000000000002 R15: 0000000000543540
| [    2.218403] ------------[ cut here ]------------
| [    2.218465] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/158
| [    2.218553] Modules linked in:
| [    2.218701] Tainted: [W]=WARN
[    2.218756] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.218825] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.218889] 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 76 b2 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 76 b2 fb ff       	call   0xfffffffffffbb2b2
  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 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.219023] RSP: 0018:ff6b73adc03efd60 EFLAGS: 00010286
[    2.219094] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.219178] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1c7230831eab00
[    2.219254] RBP: 0000000000000002 R08: ff1c723084821850 R09: ff1c723084a97030
[    2.219330] R10: ff1c723084934118 R11: fefefefefefefeff R12: 0000000000000000
[    2.219408] R13: 0000000000000010 R14: ff1c723084934000 R15: ff1c7230831eab00
[    2.219488] FS:  000000001e239400(0000) GS:ff1c723122196000(0000) knlGS:0000000000000000
[    2.219569] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.219642] CR2: 00007f45262c3000 CR3: 0000000001eaf004 CR4: 0000000000771ef0
[    2.219722] PKRU: 55555554
[    2.219771] Call Trace:
[    2.219819]  <TASK>
[    2.219867]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.219924]  notifier_call_chain (kernel/notifier.c:85)
[    2.219983]  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)
[    2.220047]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.220111]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.220175]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.220232]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.220289]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.220353] RIP: 0033:0x47cc8d
[    2.220409] 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 
[    2.220543] RSP: 002b:00007ffd49737f30 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.220621] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.220698] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.220775] RBP: 00007ffd49737f80 R08: 0000000000000004 R09: 00007ffd49737f00
[    2.220851] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd49738448
[    2.220927] R13: 00007ffd497384c8 R14: 0000000000000002 R15: 0000000000543540
| [    2.221140] ------------[ cut here ]------------
| [    2.221205] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/158
| [    2.221291] Modules linked in:
| [    2.221437] Tainted: [W]=WARN
[    2.221492] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.221561] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.221624] 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 76 b2 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 76 b2 fb ff       	call   0xfffffffffffbb2b2
  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 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.221756] RSP: 0018:ff6b73adc03efc10 EFLAGS: 00010286
[    2.221819] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.221895] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1c7230831eab00
[    2.221971] RBP: 0000000000000000 R08: ff1c723084821850 R09: ff1c723084a94030
[    2.222046] R10: ff1c723084934118 R11: fefefefefefefeff R12: 0000000000000000
[    2.222128] R13: 0000000000000010 R14: ff1c723084934000 R15: ff1c7230831eab00
[    2.222212] FS:  000000001e239400(0000) GS:ff1c723122196000(0000) knlGS:0000000000000000
[    2.222289] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.222358] CR2: 00007f45262c3000 CR3: 0000000001eaf004 CR4: 0000000000771ef0
[    2.222437] PKRU: 55555554
[    2.222485] Call Trace:
[    2.222534]  <TASK>
[    2.222583]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.222640]  __dev_notify_flags (net/core/dev.c:9787)
[    2.222698]  netif_change_flags (net/core/dev.c:9820)
[    2.222755]  dev_change_flags (net/core/dev_api.c:68)
[    2.222812]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.222871]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.222929]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.222985]  sock_do_ioctl (net/socket.c:1313)
[    2.223045]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.223110]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.223178]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.223248] RIP: 0033:0x47cc8d
[    2.223308] 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 
[    2.223439] RSP: 002b:00007ffd49737f10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.223518] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.223597] RDX: 00007ffd49737f80 RSI: 0000000000008914 RDI: 0000000000000006
[    2.223673] RBP: 00007ffd49737f60 R08: 0000000000000004 R09: 00007ffd49737f80
[    2.223749] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd49738448
[    2.223826] R13: 00007ffd497384c8 R14: 0000000000000002 R15: 0000000000543540
| [   47.189825] ------------[ cut here ]------------
| [   47.189971] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/158
| [   47.190059] Modules linked in:
| [   47.190387] Tainted: [W]=WARN
[   47.190449] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.190525] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.190598] 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 76 b2 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 76 b2 fb ff       	call   0xfffffffffffbb2b2
  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 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   47.190730] RSP: 0018:ff6b73adc03efb58 EFLAGS: 00010286
[   47.190801] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.190885] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1c7230830b8000
[   47.190968] RBP: 0000000000000000 R08: ff1c723084821850 R09: ff1c723084a94030
[   47.191046] R10: ff1c723084934118 R11: fefefefefefefeff R12: 0000000000000000
[   47.191130] R13: 0000000000000010 R14: ff1c723084934000 R15: ff1c7230830b8000
[   47.191218] FS:  0000000000000000(0000) GS:ff1c723122196000(0000) knlGS:0000000000000000
[   47.191310] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.191385] CR2: 00007f45262c3000 CR3: 000000002f642005 CR4: 0000000000771ef0
[   47.191466] PKRU: 55555554
[   47.191516] Call Trace:
[   47.191571]  <TASK>
[   47.191625]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.191691]  netif_close_many (net/core/dev.c:1804)
[   47.191758]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.191829]  ? __queue_work (kernel/workqueue.c:2401)
[   47.191894]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.191966]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.192034]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.192104]  __fput (fs/file_table.c:510)
[   47.192171]  task_work_run (kernel/task_work.c:233)
[   47.192236]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.192308]  ? sk_prot_alloc.isra.0 (./include/linux/slab.h:954 net/core/sock.c:2247)
[   47.192378]  do_group_exit (kernel/exit.c:1119)
[   47.192446]  ? sk_prot_alloc.isra.0 (net/core/sock.c:2253)
[   47.192512]  ? 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)
[   47.192572]  get_signal (kernel/signal.c:3037)
[   47.192640]  ? __d_alloc (fs/dcache.c:1807 (discriminator 11))
[   47.192703]  ? alloc_empty_file (fs/file_table.c:262 (discriminator 11))
[   47.192766]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.192839]  ? alloc_file_pseudo (fs/file_table.c:398 fs/file_table.c:425)
[   47.192905]  ? __sys_socket (net/socket.c:575 net/socket.c:1815)
[   47.192968]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.193041]  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)
[   47.193115]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.193188] RIP: 0033:0x47ea2b
[   47.193249] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   47.193327] RSP: 002b:00007ffd49737998 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
[   47.193408] RAX: 0000000000000007 RBX: 00007ffd49737a70 RCX: 000000000047ea2b
[   47.193490] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   47.193572] RBP: 00007ffd497379d0 R08: 0000000000000041 R09: 000000001e23a3e0
[   47.193652] R10: 0000000000000040 R11: 0000000000000206 R12: 00007ffd49738448
[   47.193731] R13: 00007ffd497384c8 R14: 00007ffd49737f48 R15: 0000000000543540
| [   47.194045] ------------[ cut here ]------------
| [   47.194089] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/158
| [   47.194149] Modules linked in:
| [   47.194228] Tainted: [W]=WARN
[   47.194250] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.194286] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.194322] 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 76 b2 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 76 b2 fb ff       	call   0xfffffffffffbb2b2
  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 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   47.194415] RSP: 0018:ff6b73adc03efbc8 EFLAGS: 00010286
[   47.194446] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.194493] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1c723081d72500
[   47.194531] RBP: 0000000000000000 R08: ff1c723084821850 R09: ff1c723082e68030
[   47.194570] R10: ff1c723084934118 R11: fefefefefefefeff R12: 0000000000000000
[   47.194613] R13: 0000000000000011 R14: ff1c723084934000 R15: ff1c723081d72500
[   47.194655] FS:  0000000000000000(0000) GS:ff1c723122216000(0000) knlGS:0000000000000000
[   47.194706] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.194737] CR2: 00007fa7004a4620 CR3: 00000000049b1001 CR4: 0000000000771ef0
[   47.194775] PKRU: 55555554
[   47.194794] Call Trace:
[   47.194808]  <TASK>
[   47.194821]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.194851]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.194881]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.194904]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.194926]  __fput (fs/file_table.c:510)
[   47.194949]  task_work_run (kernel/task_work.c:233)
[   47.194977]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.194999]  ? sk_prot_alloc.isra.0 (./include/linux/slab.h:954 net/core/sock.c:2247)
[   47.195028]  do_group_exit (kernel/exit.c:1119)
[   47.195047]  ? sk_prot_alloc.isra.0 (net/core/sock.c:2253)
[   47.195074]  ? 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)
[   47.195103]  get_signal (kernel/signal.c:3037)
[   47.195125]  ? __d_alloc (fs/dcache.c:1807 (discriminator 11))
[   47.195145]  ? alloc_empty_file (fs/file_table.c:262 (discriminator 11))
[   47.195167]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.195192]  ? alloc_file_pseudo (fs/file_table.c:398 fs/file_table.c:425)
[   47.195214]  ? __sys_socket (net/socket.c:575 net/socket.c:1815)
[   47.195235]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.195264]  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)
[   47.195285]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.195320] RIP: 0033:0x47ea2b
[   47.195341] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[   47.195377] RSP: 002b:00007ffd49737998 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
[   47.195417] RAX: 0000000000000007 RBX: 00007ffd49737a70 RCX: 000000000047ea2b
[   47.195458] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[   47.195502] RBP: 00007ffd497379d0 R08: 0000000000000041 R09: 000000001e23a3e0
[   47.195540] R10: 0000000000000040 R11: 0000000000000206 R12: 00007ffd49738448
[   47.195580] R13: 00007ffd497384c8 R14: 00007ffd49737f48 R15: 0000000000543540
| [   47.200213] ------------[ cut here ]------------
| [   47.200254] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: 1/62
| [   47.200314] Modules linked in:
| [   47.200390] Tainted: [W]=WARN
[   47.200413] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.200448] Workqueue: netns cleanup_net
[   47.200473] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.200502] 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 76 b2 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 76 b2 fb ff       	call   0xfffffffffffbb2b2
  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 76 b2 fb ff       	call   0xfffffffffffbb288
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   47.200595] RSP: 0018:ff6b73adc0227c78 EFLAGS: 00010286
[   47.200623] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.200664] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1c723081d72500
[   47.200710] RBP: 0000000000000000 R08: ff1c72308315dd90 R09: ff1c723084a8d82c
[   47.200748] R10: ff1c72308311d118 R11: fefefefefefefeff R12: 0000000000000000
[   47.200789] R13: 0000000000000011 R14: ff1c72308311d000 R15: ff1c723081d72500
[   47.200830] FS:  0000000000000000(0000) GS:ff1c723122216000(0000) knlGS:0000000000000000
[   47.200871] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.200904] CR2: 00005636a16b02b8 CR3: 0000000002f63003 CR4: 0000000000771ef0
[   47.200942] PKRU: 55555554
[   47.200963] Call Trace:
[   47.200976]  <TASK>
[   47.200992]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.201021]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.201050]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.201074]  cleanup_net (net/core/net_namespace.c:702)
[   47.201104]  process_one_work (kernel/workqueue.c:3314)
[   47.201128]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.201150]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.201174]  kthread (kernel/kthread.c:436)
[   47.201201]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.201223]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.201247]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))


Finger prints:
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:rtmsg_ifinfo:register_netdevice:__tun_chr_ioctl:__x64_sys_ioctl
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:netif_close_many:unregister_netdevice_many_notify:unregister_netdevice_queue
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:unregister_netdevice_queue:__tun_detach:tun_chr_close
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:default_device_exit_batch:ops_undo_list:cleanup_net
rtmsg_ifinfo_build_skb:rtnetlink_event:notifier_call_chain:netdev_update_features:__tun_chr_ioctl