======================================
| xx__-> [    2.337333] ------------[ cut here ]------------
| [    2.337466] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: unshare/158
| [    2.337569] Modules linked in:
| [    2.337743] Tainted: [W]=WARN
[    2.337832] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.337906] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.337975] 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
[    2.338115] RSP: 0018:ff66303e00273cc8 EFLAGS: 00010286
[    2.338184] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.338301] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4683ccc188ec00
[    2.338425] RBP: 0000000000000000 R08: ff4683ccc3b54210 R09: ff4683ccc3bd202c
[    2.338518] R10: ff4683ccc2ff5118 R11: fefefefefefefeff R12: 0000000000000000
[    2.338614] R13: 0000000000000010 R14: ff4683ccc2ff5000 R15: ff4683ccc188ec00
[    2.338711] FS:  00007f3f42eeb740(0000) GS:ff4683cd78f96000(0000) knlGS:0000000000000000
[    2.338810] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.338896] CR2: 000055921fbe8310 CR3: 00000000048bc002 CR4: 0000000000771ef0
[    2.339000] PKRU: 55555554
[    2.339061] Call Trace:
[    2.339143]  <TASK>
[    2.339197]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.339276]  register_netdevice (net/core/dev.c:11488)
[    2.339338]  register_netdev (net/core/dev.c:11552)
[    2.339413]  loopback_net_init (drivers/net/loopback.c:218)
[    2.339485]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.339565]  ops_init (net/core/net_namespace.c:137)
[    2.339663]  setup_net (net/core/net_namespace.c:446)
[    2.339733]  copy_net_ns (net/core/net_namespace.c:579)
[    2.339803]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.339893]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.339964]  ksys_unshare (kernel/fork.c:3243)
[    2.340027]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.340090]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.340154]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.340224] RIP: 0033:0x7f3f42fe6bcb
[    2.340286] 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
[    2.340431] RSP: 002b:00007ffd1a9b1568 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.340539] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3f42fe6bcb
[    2.340629] RDX: 0000000000000000 RSI: 00007ffd1a9b12d0 RDI: 0000000040000000
[    2.340710] RBP: 00007ffd1a9b18f0 R08: 00007ffd1a9b14c0 R09: 0000000000000000
[    2.340791] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.340873] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055921fbebb68
| [    2.344588] ------------[ cut here ]------------
| [    2.344683] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/158
| [    2.344777] Modules linked in:
| [    2.344942] Tainted: [W]=WARN
[    2.345001] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.345093] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.345165] 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
[    2.345307] RSP: 0018:ff66303e00273d68 EFLAGS: 00010286
[    2.345381] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.345468] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4683ccc188ec00
[    2.345552] RBP: 0000000000000000 R08: ff4683ccc2fafb90 R09: ff4683ccc3bd7030
[    2.345645] R10: ff4683ccc49e4118 R11: fefefefefefefeff R12: 0000000000000000
[    2.345728] R13: 0000000000000010 R14: ff4683ccc49e4000 R15: ff4683ccc188ec00
[    2.345814] FS:  000000001ab26400(0000) GS:ff4683cd78f96000(0000) knlGS:0000000000000000
[    2.345957] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.346068] CR2: 00007f8b61087000 CR3: 00000000048c4003 CR4: 0000000000771ef0
[    2.346158] PKRU: 55555554
[    2.346211] Call Trace:
[    2.346263]  <TASK>
[    2.346315]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.346436]  register_netdevice (net/core/dev.c:11488)
[    2.346497]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.346560]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.346626]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.346689]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.346749]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.346817] RIP: 0033:0x47cc8d
[    2.346878] 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 
[    2.347015] RSP: 002b:00007ffc4f5eba30 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.347098] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.347179] RDX: 00007ffc4f5ebab0 RSI: 00000000400454ca RDI: 0000000000000005
[    2.347259] RBP: 00007ffc4f5eba80 R08: 0000000000000000 R09: 0000000000000000
[    2.347342] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc4f5ebf88
[    2.347430] R13: 00007ffc4f5ec008 R14: 0000000000000002 R15: 0000000000543540
| [    2.347653] ------------[ cut here ]------------
| [    2.347719] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/158
| [    2.347808] Modules linked in:
| [    2.348004] Tainted: [W]=WARN
[    2.348063] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.348137] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.348206] 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
[    2.348341] RSP: 0018:ff66303e00273d60 EFLAGS: 00010286
[    2.348416] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.348495] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4683ccc188ec00
[    2.348582] RBP: 0000000000000002 R08: ff4683ccc2fafb90 R09: ff4683ccc3bd7030
[    2.348663] R10: ff4683ccc49e4118 R11: fefefefefefefeff R12: 0000000000000000
[    2.348746] R13: 0000000000000010 R14: ff4683ccc49e4000 R15: ff4683ccc188ec00
[    2.348831] FS:  000000001ab26400(0000) GS:ff4683cd78f96000(0000) knlGS:0000000000000000
[    2.348913] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.348987] CR2: 00007f8b61087000 CR3: 00000000048c4003 CR4: 0000000000771ef0
[    2.349071] PKRU: 55555554
[    2.349122] Call Trace:
[    2.349173]  <TASK>
[    2.349225]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.349288]  notifier_call_chain (kernel/notifier.c:85)
[    2.349357]  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)
[    2.349427]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.349487]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.349548]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.349617]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.349678]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.349746] RIP: 0033:0x47cc8d
[    2.349805] 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 
[    2.349945] RSP: 002b:00007ffc4f5eba70 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.350025] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.350106] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.350187] RBP: 00007ffc4f5ebac0 R08: 0000000000000000 R09: 0000000000000000
[    2.350268] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc4f5ebf88
[    2.350354] R13: 00007ffc4f5ec008 R14: 0000000000000002 R15: 0000000000543540
| [    2.350581] ------------[ cut here ]------------
| [    2.350648] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/158
| [    2.350738] Modules linked in:
| [    2.350894] Tainted: [W]=WARN
[    2.350953] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.351224] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.351292] 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
[    2.351438] RSP: 0018:ff66303e00273c10 EFLAGS: 00010286
[    2.351505] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.351595] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4683ccc188ec00
[    2.351677] RBP: 0000000000000000 R08: ff4683ccc2fafb90 R09: ff4683ccc3bd4030
[    2.351758] R10: ff4683ccc49e4118 R11: fefefefefefefeff R12: 0000000000000000
[    2.351839] R13: 0000000000000010 R14: ff4683ccc49e4000 R15: ff4683ccc188ec00
[    2.351923] FS:  000000001ab26400(0000) GS:ff4683cd78f96000(0000) knlGS:0000000000000000
[    2.352007] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.352081] CR2: 00007f8b61087000 CR3: 00000000048c4003 CR4: 0000000000771ef0
[    2.352163] PKRU: 55555554
[    2.352214] Call Trace:
[    2.352266]  <TASK>
[    2.352318]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.352381]  __dev_notify_flags (net/core/dev.c:9787)
[    2.352444]  netif_change_flags (net/core/dev.c:9820)
[    2.352505]  dev_change_flags (net/core/dev_api.c:68)
[    2.352565]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.352634]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.352695]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.352755]  sock_do_ioctl (net/socket.c:1313)
[    2.352819]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.352879]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.352940]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.353009] RIP: 0033:0x47cc8d
[    2.353068] 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 
[    2.353204] RSP: 002b:00007ffc4f5eba50 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.353284] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.353370] RDX: 00007ffc4f5ebac0 RSI: 0000000000008914 RDI: 0000000000000006
[    2.353450] RBP: 00007ffc4f5ebaa0 R08: 0000000000000000 R09: 0000000000000000
[    2.353531] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc4f5ebf88
[    2.353615] R13: 00007ffc4f5ec008 R14: 0000000000000002 R15: 0000000000543540
| [   47.317689] ------------[ cut here ]------------
| [   47.317802] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/158
| [   47.317940] Modules linked in:
| [   47.318101] Tainted: [W]=WARN
[   47.318160] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.318234] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.318305] 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
[   47.318451] RSP: 0018:ff66303e00273b58 EFLAGS: 00010286
[   47.318518] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.318801] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4683ccc2fab600
[   47.318891] RBP: 0000000000000000 R08: ff4683ccc2fafb90 R09: ff4683ccc3bd4030
[   47.318974] R10: ff4683ccc49e4118 R11: fefefefefefefeff R12: 0000000000000000
[   47.319055] R13: 0000000000000010 R14: ff4683ccc49e4000 R15: ff4683ccc2fab600
[   47.319140] FS:  0000000000000000(0000) GS:ff4683cd78f96000(0000) knlGS:0000000000000000
[   47.319224] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.319300] CR2: 00007f8b61087000 CR3: 0000000016642004 CR4: 0000000000771ef0
[   47.319383] PKRU: 55555554
[   47.319443] Call Trace:
[   47.319497]  <TASK>
[   47.319550]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.319618]  netif_close_many (net/core/dev.c:1804)
[   47.319681]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.319750]  ? __queue_work (kernel/workqueue.c:2401)
[   47.319818]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.319886]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.319951]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.320012]  __fput (fs/file_table.c:510)
[   47.320076]  task_work_run (kernel/task_work.c:233)
[   47.320138]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.320202]  do_group_exit (kernel/exit.c:1119)
[   47.320263]  get_signal (kernel/signal.c:3037)
[   47.320325]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.320399]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.320476]  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)
[   47.320540]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.320612] RIP: 0033:0x4c2d9e
[   47.320672] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.320749] RSP: 002b:00007ffc4f5eb3e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.320832] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   47.320915] RDX: 0000000000000014 RSI: 00007ffc4f5eb4c0 RDI: 0000000000000007
[   47.321000] RBP: 00007ffc4f5eb3f0 R08: 00007ffc4f5eb480 R09: 000000000000000c
[   47.321153] R10: 0000000000000000 R11: 0000000000000202 R12: 000000001ab2ff70
[   47.321235] R13: 00007ffc4f5ec008 R14: 00007ffc4f5eb5b0 R15: 0000000000543540
| [   47.321555] ------------[ cut here ]------------
| [   47.321596] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/158
| [   47.321657] Modules linked in:
| [   47.321732] Tainted: [W]=WARN
[   47.321755] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.321790] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.321819] 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
[   47.321917] RSP: 0018:ff66303e00273bc8 EFLAGS: 00010286
[   47.321950] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.321996] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4683ccc188ef00
[   47.322039] RBP: 0000000000000000 R08: ff4683ccc2fafb90 R09: ff4683ccc4af8030
[   47.322081] R10: ff4683ccc49e4118 R11: fefefefefefefeff R12: 0000000000000000
[   47.322124] R13: 0000000000000011 R14: ff4683ccc49e4000 R15: ff4683ccc188ef00
[   47.322175] FS:  0000000000000000(0000) GS:ff4683cd78f16000(0000) knlGS:0000000000000000
[   47.322221] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.322259] CR2: 00007fca613c9f98 CR3: 0000000004a53005 CR4: 0000000000771ef0
[   47.322304] PKRU: 55555554
[   47.322319] Call Trace:
[   47.322335]  <TASK>
[   47.322351]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.322385]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.322421]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.322449]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.322473]  __fput (fs/file_table.c:510)
[   47.322498]  task_work_run (kernel/task_work.c:233)
[   47.322520]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.322545]  do_group_exit (kernel/exit.c:1119)
[   47.322568]  get_signal (kernel/signal.c:3037)
[   47.322597]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.322633]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.322666]  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)
[   47.322688]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.322722] RIP: 0033:0x4c2d9e
[   47.322746] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.322784] RSP: 002b:00007ffc4f5eb3e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.322832] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   47.322875] RDX: 0000000000000014 RSI: 00007ffc4f5eb4c0 RDI: 0000000000000007
[   47.322919] RBP: 00007ffc4f5eb3f0 R08: 00007ffc4f5eb480 R09: 000000000000000c
[   47.322964] R10: 0000000000000000 R11: 0000000000000202 R12: 000000001ab2ff70
[   47.323009] R13: 00007ffc4f5ec008 R14: 00007ffc4f5eb5b0 R15: 0000000000543540
| [   47.330721] ------------[ cut here ]------------
| [   47.330772] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 0/12
| [   47.330832] Modules linked in:
| [   47.330919] Tainted: [W]=WARN
[   47.330941] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.330978] Workqueue: netns cleanup_net
[   47.331007] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.331040] 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
[   47.331139] RSP: 0018:ff66303e00067c78 EFLAGS: 00010286
[   47.331206] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.331254] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4683ccc188e000
[   47.331306] RBP: 0000000000000000 R08: ff4683ccc3b54210 R09: ff4683ccc3bcb02c
[   47.331355] R10: ff4683ccc2ff5118 R11: fefefefefefefeff R12: 0000000000000000
[   47.331402] R13: 0000000000000011 R14: ff4683ccc2ff5000 R15: ff4683ccc188e000
[   47.331454] FS:  0000000000000000(0000) GS:ff4683cd78e96000(0000) knlGS:0000000000000000
[   47.331498] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.331537] CR2: 000055557121d340 CR3: 0000000002e71003 CR4: 0000000000771ef0
[   47.331613] PKRU: 55555554
[   47.331628] Call Trace:
[   47.331646]  <TASK>
[   47.331661]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.331699]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.331730]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.331759]  cleanup_net (net/core/net_namespace.c:702)
[   47.331814]  process_one_work (kernel/workqueue.c:3314)
[   47.331842]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.331867]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.331891]  kthread (kernel/kthread.c:436)
[   47.331915]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.331936]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.331962]  ? 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