======================================
| xx__-> [    2.356933] ------------[ cut here ]------------
| [    2.356992] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/158
| [    2.357047] Modules linked in:
| [    2.357132] Tainted: [W]=WARN
[    2.357156] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.357191] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.357222] 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
[    2.357316] RSP: 0018:ff5916a880407cc8 EFLAGS: 00010286
[    2.357346] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.357387] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff376a8b82fcc600
[    2.357427] RBP: 0000000000000000 R08: ff376a8b83352b10 R09: ff376a8b8475302c
[    2.357467] R10: ff376a8b819b6118 R11: fefefefefefefeff R12: 0000000000000000
[    2.357513] R13: 0000000000000010 R14: ff376a8b819b6000 R15: ff376a8b82fcc600
[    2.357558] FS:  00007f3e1489a740(0000) GS:ff376a8c19696000(0000) knlGS:0000000000000000
[    2.357599] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.357631] CR2: 0000559bcd65d310 CR3: 0000000004658001 CR4: 0000000000771ef0
[    2.357671] PKRU: 55555554
[    2.357691] Call Trace:
[    2.357707]  <TASK>
[    2.357721]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.357743]  register_netdevice (net/core/dev.c:11488)
[    2.357765]  register_netdev (net/core/dev.c:11552)
[    2.357785]  loopback_net_init (drivers/net/loopback.c:218)
[    2.357806]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.357834]  ops_init (net/core/net_namespace.c:137)
[    2.357858]  setup_net (net/core/net_namespace.c:446)
[    2.357879]  copy_net_ns (net/core/net_namespace.c:579)
[    2.357901]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.357931]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.357960]  ksys_unshare (kernel/fork.c:3243)
[    2.357983]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.358006]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.358029]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.358057] RIP: 0033:0x7f3e14995bcb
[    2.358084] 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
[    2.358174] RSP: 002b:00007ffc73c3f1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.358218] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3e14995bcb
[    2.358257] RDX: 0000000000000000 RSI: 00007ffc73c3ef50 RDI: 0000000040000000
[    2.358295] RBP: 00007ffc73c3f570 R08: 00007ffc73c3f140 R09: 0000000000000000
[    2.358335] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.358379] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000559bcd660b68
| [    2.361827] ------------[ cut here ]------------
| [    2.361865] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/158
| [    2.361913] Modules linked in:
| [    2.361985] Tainted: [W]=WARN
[    2.362007] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.362038] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.362072] 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
[    2.362168] RSP: 0018:ff5916a880407d68 EFLAGS: 00010286
[    2.362198] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.362236] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff376a8b82fcc600
[    2.362275] RBP: 0000000000000000 R08: ff376a8b83352c90 R09: ff376a8b84750030
[    2.362314] R10: ff376a8b845d8118 R11: fefefefefefefeff R12: 0000000000000000
[    2.362351] R13: 0000000000000010 R14: ff376a8b845d8000 R15: ff376a8b82fcc600
[    2.362393] FS:  0000000015b65400(0000) GS:ff376a8c19696000(0000) knlGS:0000000000000000
[    2.362436] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.362471] CR2: 00007faed62bf000 CR3: 000000000452f002 CR4: 0000000000771ef0
[    2.362515] PKRU: 55555554
[    2.362529] Call Trace:
[    2.362542]  <TASK>
[    2.362558]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.362584]  register_netdevice (net/core/dev.c:11488)
[    2.362605]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.362628]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.362651]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.362673]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.362694]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.362721] RIP: 0033:0x47cc8d
[    2.362741] 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 
[    2.362832] RSP: 002b:00007ffc611bccd0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.362871] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.362911] RDX: 00007ffc611bcd50 RSI: 00000000400454ca RDI: 0000000000000005
[    2.362951] RBP: 00007ffc611bcd20 R08: 0000000000000000 R09: 0000000000000000
[    2.362990] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc611bd228
[    2.363033] R13: 00007ffc611bd2a8 R14: 0000000000000002 R15: 0000000000543540
| [    2.363130] ------------[ cut here ]------------
| [    2.363158] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/158
| [    2.363204] Modules linked in:
| [    2.363285] Tainted: [W]=WARN
[    2.363317] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.363351] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.363377] 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
[    2.363465] RSP: 0018:ff5916a880407d60 EFLAGS: 00010286
[    2.363496] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.363537] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff376a8b82fcc600
[    2.363574] RBP: 0000000000000002 R08: ff376a8b83352c90 R09: ff376a8b84750030
[    2.363614] R10: ff376a8b845d8118 R11: fefefefefefefeff R12: 0000000000000000
[    2.363652] R13: 0000000000000010 R14: ff376a8b845d8000 R15: ff376a8b82fcc600
[    2.363696] FS:  0000000015b65400(0000) GS:ff376a8c19696000(0000) knlGS:0000000000000000
[    2.363738] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.363771] CR2: 00007faed62bf000 CR3: 000000000452f002 CR4: 0000000000771ef0
[    2.363812] PKRU: 55555554
[    2.363826] Call Trace:
[    2.363841]  <TASK>
[    2.363857]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.363878]  notifier_call_chain (kernel/notifier.c:85)
[    2.363902]  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)
[    2.363931]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.363954]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.363978]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.364004]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.364025]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.364058] RIP: 0033:0x47cc8d
[    2.364082] 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 
[    2.364169] RSP: 002b:00007ffc611bcd10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.364210] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.364248] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.364289] RBP: 00007ffc611bcd60 R08: 0000000000000000 R09: 0000000000000000
[    2.364334] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc611bd228
[    2.364370] R13: 00007ffc611bd2a8 R14: 0000000000000002 R15: 0000000000543540
| [    2.364465] ------------[ cut here ]------------
| [    2.364500] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/158
| [    2.364543] Modules linked in:
| [    2.364618] Tainted: [W]=WARN
[    2.364638] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.364668] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.364694] 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
[    2.364780] RSP: 0018:ff5916a880407c10 EFLAGS: 00010286
[    2.364807] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.364848] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff376a8b82fcc600
[    2.364890] RBP: 0000000000000000 R08: ff376a8b83352c90 R09: ff376a8b84755030
[    2.364934] R10: ff376a8b845d8118 R11: fefefefefefefeff R12: 0000000000000000
[    2.364973] R13: 0000000000000010 R14: ff376a8b845d8000 R15: ff376a8b82fcc600
[    2.365016] FS:  0000000015b65400(0000) GS:ff376a8c19696000(0000) knlGS:0000000000000000
[    2.365057] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.365092] CR2: 00007faed62bf000 CR3: 000000000452f002 CR4: 0000000000771ef0
[    2.365136] PKRU: 55555554
[    2.365150] Call Trace:
[    2.365165]  <TASK>
[    2.365181]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.365202]  __dev_notify_flags (net/core/dev.c:9787)
[    2.365225]  netif_change_flags (net/core/dev.c:9820)
[    2.365246]  dev_change_flags (net/core/dev_api.c:68)
[    2.365272]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.365295]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.365316]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.365339]  sock_do_ioctl (net/socket.c:1313)
[    2.365362]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.365387]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.365408]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.365436] RIP: 0033:0x47cc8d
[    2.365458] 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 
[    2.365554] RSP: 002b:00007ffc611bccf0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.365594] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.365636] RDX: 00007ffc611bcd60 RSI: 0000000000008914 RDI: 0000000000000006
[    2.365679] RBP: 00007ffc611bcd40 R08: 0000000000000000 R09: 0000000000000000
[    2.365716] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc611bd228
[    2.365754] R13: 00007ffc611bd2a8 R14: 0000000000000002 R15: 0000000000543540
| [   47.335377] ------------[ cut here ]------------
| [   47.335475] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/158
| [   47.335544] Modules linked in:
| [   47.335630] Tainted: [W]=WARN
[   47.335655] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.335689] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.335721] 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
[   47.335825] RSP: 0018:ff5916a880407b58 EFLAGS: 00010286
[   47.335850] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.335892] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff376a8b82ffb400
[   47.335936] RBP: 0000000000000000 R08: ff376a8b83352c90 R09: ff376a8b84755030
[   47.335972] R10: ff376a8b845d8118 R11: fefefefefefefeff R12: 0000000000000000
[   47.336006] R13: 0000000000000010 R14: ff376a8b845d8000 R15: ff376a8b82ffb400
[   47.336056] FS:  0000000000000000(0000) GS:ff376a8c19696000(0000) knlGS:0000000000000000
[   47.336098] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.336137] CR2: 00007faed62bf000 CR3: 000000003c442003 CR4: 0000000000771ef0
[   47.336182] PKRU: 55555554
[   47.336196] Call Trace:
[   47.336222]  <TASK>
[   47.336239]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.336261]  netif_close_many (net/core/dev.c:1804)
[   47.336285]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.336314]  ? __queue_work (kernel/workqueue.c:2401)
[   47.336337]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.336368]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.336394]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.336414]  __fput (fs/file_table.c:510)
[   47.336441]  task_work_run (kernel/task_work.c:233)
[   47.336465]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.336494]  do_group_exit (kernel/exit.c:1119)
[   47.336517]  get_signal (kernel/signal.c:3037)
[   47.336545]  ? netlink_bind (net/netlink/af_netlink.c:462 net/netlink/af_netlink.c:459 net/netlink/af_netlink.c:1054)
[   47.336568]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.336599]  ? __sys_bind (net/socket.c:1933 (discriminator 3) net/socket.c:1964 (discriminator 3))
[   47.336622]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.336652]  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)
[   47.336676]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.336707] RIP: 0033:0x47e7bb
[   47.336731] Code: Unable to access opcode bytes at 0x47e791.

Code starting with the faulting instruction
===========================================
[   47.336769] RSP: 002b:00007ffc611bc778 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
[   47.336811] RAX: 0000000000000000 RBX: 00007ffc611bc850 RCX: 000000000047e7bb
[   47.336856] RDX: 000000000000000c RSI: 00007ffc611bc78c RDI: 0000000000000007
[   47.336897] RBP: 00007ffc611bc7b0 R08: 0000000000000041 R09: 0000000015b663e0
[   47.336937] R10: 0000000000000040 R11: 0000000000000246 R12: 00007ffc611bd228
[   47.336979] R13: 00007ffc611bd2a8 R14: 00007ffc611bcd28 R15: 0000000000543540
| [   47.337124] ------------[ cut here ]------------
| [   47.337152] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/158
| [   47.337199] Modules linked in:
| [   47.337285] Tainted: [W]=WARN
[   47.337307] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.337342] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.337369] 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
[   47.337460] RSP: 0018:ff5916a880407bc8 EFLAGS: 00010286
[   47.337644] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.337684] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff376a8b82ffb400
[   47.337726] RBP: 0000000000000000 R08: ff376a8b83352c90 R09: ff376a8b8475d030
[   47.337767] R10: ff376a8b845d8118 R11: fefefefefefefeff R12: 0000000000000000
[   47.337811] R13: 0000000000000011 R14: ff376a8b845d8000 R15: ff376a8b82ffb400
[   47.337854] FS:  0000000000000000(0000) GS:ff376a8c19696000(0000) knlGS:0000000000000000
[   47.337896] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.337928] CR2: 00007faed62bf000 CR3: 000000003c442003 CR4: 0000000000771ef0
[   47.337966] PKRU: 55555554
[   47.337981] Call Trace:
[   47.337997]  <TASK>
[   47.338014]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.338043]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.338072]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.338095]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.338119]  __fput (fs/file_table.c:510)
[   47.338142]  task_work_run (kernel/task_work.c:233)
[   47.338163]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.338186]  do_group_exit (kernel/exit.c:1119)
[   47.338206]  get_signal (kernel/signal.c:3037)
[   47.338231]  ? netlink_bind (net/netlink/af_netlink.c:462 net/netlink/af_netlink.c:459 net/netlink/af_netlink.c:1054)
[   47.338253]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.338282]  ? __sys_bind (net/socket.c:1933 (discriminator 3) net/socket.c:1964 (discriminator 3))
[   47.338305]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.338332]  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)
[   47.338356]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.338385] RIP: 0033:0x47e7bb
[   47.338404] Code: Unable to access opcode bytes at 0x47e791.

Code starting with the faulting instruction
===========================================
[   47.338440] RSP: 002b:00007ffc611bc778 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
[   47.338482] RAX: 0000000000000000 RBX: 00007ffc611bc850 RCX: 000000000047e7bb
[   47.338521] RDX: 000000000000000c RSI: 00007ffc611bc78c RDI: 0000000000000007
[   47.338561] RBP: 00007ffc611bc7b0 R08: 0000000000000041 R09: 0000000015b663e0
[   47.338600] R10: 0000000000000040 R11: 0000000000000246 R12: 00007ffc611bd228
[   47.338641] R13: 00007ffc611bd2a8 R14: 00007ffc611bcd28 R15: 0000000000543540
| [   47.357563] ------------[ cut here ]------------
| [   47.357657] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: 1/65
| [   47.357732] Modules linked in:
| [   47.357819] Tainted: [W]=WARN
[   47.357841] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.357871] Workqueue: netns cleanup_net
[   47.357895] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.357926] 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
[   47.358023] RSP: 0018:ff5916a88023fc78 EFLAGS: 00010286
[   47.358052] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.358095] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff376a8b81934600
[   47.358140] RBP: 0000000000000000 R08: ff376a8b83352b10 R09: ff376a8b8303282c
[   47.358180] R10: ff376a8b819b6118 R11: fefefefefefefeff R12: 0000000000000000
[   47.358230] R13: 0000000000000011 R14: ff376a8b819b6000 R15: ff376a8b81934600
[   47.358279] FS:  0000000000000000(0000) GS:ff376a8c19716000(0000) knlGS:0000000000000000
[   47.358321] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.358349] CR2: 00007f8f9fc88680 CR3: 000000003c442003 CR4: 0000000000771ef0
[   47.358402] PKRU: 55555554
[   47.358415] Call Trace:
[   47.358431]  <TASK>
[   47.358444]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.358472]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.358508]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.358530]  cleanup_net (net/core/net_namespace.c:702)
[   47.358554]  process_one_work (kernel/workqueue.c:3314)
[   47.358579]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.358604]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.358627]  kthread (kernel/kthread.c:436)
[   47.358651]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.358672]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.358697]  ? 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