======================================
| xx__-> [    2.258751] ------------[ cut here ]------------
| [    2.258838] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: unshare/159
| [    2.258932] Modules linked in:
| [    2.259112] Tainted: [W]=WARN
[    2.259169] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.259277] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.259351] 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
[    2.259557] RSP: 0018:ff6b6e7c803efcc8 EFLAGS: 00010286
[    2.259652] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.259731] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff48d0ec81cd7a00
[    2.259808] RBP: 0000000000000000 R08: ff48d0ec832ab550 R09: ff48d0ec8447902c
[    2.259885] R10: ff48d0ec81d54118 R11: fefefefefefefeff R12: 0000000000000000
[    2.259960] R13: 0000000000000010 R14: ff48d0ec81d54000 R15: ff48d0ec81cd7a00
[    2.260051] FS:  00007f5173236740(0000) GS:ff48d0ed07d96000(0000) knlGS:0000000000000000
[    2.260130] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.260199] CR2: 000055858c2c9310 CR3: 00000000045a9006 CR4: 0000000000771ef0
[    2.260277] PKRU: 55555554
[    2.260325] Call Trace:
[    2.260375]  <TASK>
[    2.260425]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.260487]  register_netdevice (net/core/dev.c:11488)
[    2.260545]  register_netdev (net/core/dev.c:11552)
[    2.260602]  loopback_net_init (drivers/net/loopback.c:218)
[    2.260663]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.260728]  ops_init (net/core/net_namespace.c:137)
[    2.260787]  setup_net (net/core/net_namespace.c:446)
[    2.260845]  copy_net_ns (net/core/net_namespace.c:579)
[    2.260902]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.260976]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.261043]  ksys_unshare (kernel/fork.c:3243)
[    2.261104]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.261161]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.261220]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.261285] RIP: 0033:0x7f5173331bcb
[    2.261343] 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
[    2.261473] RSP: 002b:00007ffe89458a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.261551] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5173331bcb
[    2.261628] RDX: 0000000000000000 RSI: 00007ffe894587a0 RDI: 0000000040000000
[    2.261705] RBP: 00007ffe89458dc0 R08: 00007ffe89458990 R09: 0000000000000000
[    2.261782] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.261858] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055858c2ccb68
| [    2.265370] ------------[ cut here ]------------
| [    2.265437] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/159
| [    2.265530] Modules linked in:
| [    2.265681] Tainted: [W]=WARN
[    2.265741] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.265817] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.265887] 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
[    2.266035] RSP: 0018:ff6b6e7c803efd68 EFLAGS: 00010286
[    2.266102] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.266182] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff48d0ec81cd7a00
[    2.266262] RBP: 0000000000000000 R08: ff48d0ec82ae68d0 R09: ff48d0ec8447e030
[    2.266341] R10: ff48d0ec84614118 R11: fefefefefefefeff R12: 0000000000000000
[    2.266420] R13: 0000000000000010 R14: ff48d0ec84614000 R15: ff48d0ec81cd7a00
[    2.266503] FS:  000000000ffe7400(0000) GS:ff48d0ed07d96000(0000) knlGS:0000000000000000
[    2.266585] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.266657] CR2: 00007fd94cb5b000 CR3: 00000000032f5002 CR4: 0000000000771ef0
[    2.266740] PKRU: 55555554
[    2.266790] Call Trace:
[    2.266841]  <TASK>
[    2.266892]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.266954]  register_netdevice (net/core/dev.c:11488)
[    2.267027]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.267092]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.267156]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.267216]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.267280]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.267349] RIP: 0033:0x47cc8d
[    2.267409] 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 
[    2.267538] RSP: 002b:00007ffd81f235a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.267618] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.267697] RDX: 00007ffd81f23620 RSI: 00000000400454ca RDI: 0000000000000005
[    2.267777] RBP: 00007ffd81f235f0 R08: 0000000000000000 R09: 0000000000000000
[    2.267856] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd81f23af8
[    2.267936] R13: 00007ffd81f23b78 R14: 0000000000000002 R15: 0000000000543540
| [    2.268166] ------------[ cut here ]------------
| [    2.268234] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/159
| [    2.268321] Modules linked in:
| [    2.268473] Tainted: [W]=WARN
[    2.268533] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.268605] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.268673] 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
[    2.268799] RSP: 0018:ff6b6e7c803efd60 EFLAGS: 00010286
[    2.268867] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.268946] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff48d0ec81cd7a00
[    2.269036] RBP: 0000000000000002 R08: ff48d0ec82ae68d0 R09: ff48d0ec8447e030
[    2.269116] R10: ff48d0ec84614118 R11: fefefefefefefeff R12: 0000000000000000
[    2.269196] R13: 0000000000000010 R14: ff48d0ec84614000 R15: ff48d0ec81cd7a00
[    2.269279] FS:  000000000ffe7400(0000) GS:ff48d0ed07d96000(0000) knlGS:0000000000000000
[    2.269359] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.269432] CR2: 00007fd94cb5b000 CR3: 00000000032f5002 CR4: 0000000000771ef0
[    2.269512] PKRU: 55555554
[    2.269563] Call Trace:
[    2.269613]  <TASK>
[    2.269663]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.269726]  notifier_call_chain (kernel/notifier.c:85)
[    2.269788]  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)
[    2.269857]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.269920]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.269996]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.270058]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.270121]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.270188] RIP: 0033:0x47cc8d
[    2.270246] 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 
[    2.270372] RSP: 002b:00007ffd81f235e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.270452] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.270532] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.270612] RBP: 00007ffd81f23630 R08: 0000000000000005 R09: 0000000000001ff0
[    2.270693] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffd81f23af8
[    2.270772] R13: 00007ffd81f23b78 R14: 0000000000000002 R15: 0000000000543540
| [    2.271028] ------------[ cut here ]------------
| [    2.271089] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/159
| [    2.271180] Modules linked in:
| [    2.271334] Tainted: [W]=WARN
[    2.271390] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.271465] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.271533] 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
[    2.271659] RSP: 0018:ff6b6e7c803efc10 EFLAGS: 00010286
[    2.271727] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.271805] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff48d0ec81cd7a00
[    2.271884] RBP: 0000000000000000 R08: ff48d0ec82ae68d0 R09: ff48d0ec8448b030
[    2.271971] R10: ff48d0ec84614118 R11: fefefefefefefeff R12: 0000000000000000
[    2.272057] R13: 0000000000000010 R14: ff48d0ec84614000 R15: ff48d0ec81cd7a00
[    2.272140] FS:  000000000ffe7400(0000) GS:ff48d0ed07d96000(0000) knlGS:0000000000000000
[    2.272221] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.272295] CR2: 00007fd94cb5b000 CR3: 00000000032f5002 CR4: 0000000000771ef0
[    2.272375] PKRU: 55555554
[    2.272424] Call Trace:
[    2.272475]  <TASK>
[    2.272525]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.272589]  __dev_notify_flags (net/core/dev.c:9787)
[    2.272652]  netif_change_flags (net/core/dev.c:9820)
[    2.272714]  dev_change_flags (net/core/dev_api.c:68)
[    2.272775]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.272839]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.272901]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.272970]  sock_do_ioctl (net/socket.c:1313)
[    2.273041]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.273103]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.273165]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.273237] RIP: 0033:0x47cc8d
[    2.273297] 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 
[    2.273423] RSP: 002b:00007ffd81f235c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.273503] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.273582] RDX: 00007ffd81f23630 RSI: 0000000000008914 RDI: 0000000000000006
[    2.273662] RBP: 00007ffd81f23610 R08: 0000000000000005 R09: 0000000000001ff0
[    2.273741] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffd81f23af8
[    2.273819] R13: 00007ffd81f23b78 R14: 0000000000000002 R15: 0000000000543540
| [   47.239704] ------------[ cut here ]------------
| [   47.239814] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/159
| [   47.239911] Modules linked in:
| [   47.240269] Tainted: [W]=WARN
[   47.240327] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.240398] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.240463] 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
[   47.240596] RSP: 0018:ff6b6e7c803efb58 EFLAGS: 00010286
[   47.240659] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.240737] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff48d0ec81cd5600
[   47.240816] RBP: 0000000000000000 R08: ff48d0ec82ae68d0 R09: ff48d0ec8448b030
[   47.240893] R10: ff48d0ec84614118 R11: fefefefefefefeff R12: 0000000000000000
[   47.240978] R13: 0000000000000010 R14: ff48d0ec84614000 R15: ff48d0ec81cd5600
[   47.241061] FS:  0000000000000000(0000) GS:ff48d0ed07d96000(0000) knlGS:0000000000000000
[   47.241148] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.241219] CR2: 00007fd94cb5b000 CR3: 000000000f842003 CR4: 0000000000771ef0
[   47.241298] PKRU: 55555554
[   47.241347] Call Trace:
[   47.241398]  <TASK>
[   47.241448]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.241506]  netif_close_many (net/core/dev.c:1804)
[   47.241566]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.241631]  ? __queue_work (kernel/workqueue.c:2401)
[   47.241691]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.241756]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.241819]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.241877]  __fput (fs/file_table.c:510)
[   47.241938]  task_work_run (kernel/task_work.c:233)
[   47.242005]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.242064]  ? netlink_dump (net/netlink/af_netlink.c:2378)
[   47.242120]  do_group_exit (kernel/exit.c:1119)
[   47.242182]  get_signal (kernel/signal.c:3037)
[   47.242242]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.242309]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.242376]  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)
[   47.242436]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.242502] RIP: 0033:0x4c2d9e
[   47.242559] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.242629] RSP: 002b:00007ffd81f22f50 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[   47.242735] RAX: 0000000000000050 RBX: 00007ffd81f22fe0 RCX: 00000000004c2d9e
[   47.242812] RDX: 0000000000000000 RSI: 00007ffd81f22ff0 RDI: 0000000000000007
[   47.242890] RBP: 00007ffd81f22f60 R08: 0000000000000000 R09: 0000000000000000
[   47.242975] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd81f22fd4
[   47.243081] R13: 00007ffd81f23b78 R14: 00007ffd81f23120 R15: 0000000000543540
| [   47.244641] ------------[ cut here ]------------
| [   47.244707] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/159
| [   47.244799] Modules linked in:
| [   47.244952] Tainted: [W]=WARN
[   47.245161] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.245235] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.245301] 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
[   47.245435] RSP: 0018:ff6b6e7c803efbc8 EFLAGS: 00010286
[   47.245499] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.245576] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff48d0ec81cd5600
[   47.245652] RBP: 0000000000000000 R08: ff48d0ec82ae68d0 R09: ff48d0ec84483030
[   47.245730] R10: ff48d0ec84614118 R11: fefefefefefefeff R12: 0000000000000000
[   47.245810] R13: 0000000000000011 R14: ff48d0ec84614000 R15: ff48d0ec81cd5600
[   47.245889] FS:  0000000000000000(0000) GS:ff48d0ed07d96000(0000) knlGS:0000000000000000
[   47.245975] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.246045] CR2: 00007fd94cb5b000 CR3: 000000000f842003 CR4: 0000000000771ef0
[   47.246125] PKRU: 55555554
[   47.246180] Call Trace:
[   47.246230]  <TASK>
[   47.246279]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.246345]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.246410]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.246469]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.246528]  __fput (fs/file_table.c:510)
[   47.246587]  task_work_run (kernel/task_work.c:233)
[   47.246646]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.246703]  ? netlink_dump (net/netlink/af_netlink.c:2378)
[   47.246762]  do_group_exit (kernel/exit.c:1119)
[   47.246820]  get_signal (kernel/signal.c:3037)
[   47.246878]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.246944]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.247021]  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)
[   47.247080]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.247152] RIP: 0033:0x4c2d9e
[   47.247209] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.247278] RSP: 002b:00007ffd81f22f50 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[   47.247356] RAX: 0000000000000050 RBX: 00007ffd81f22fe0 RCX: 00000000004c2d9e
[   47.247433] RDX: 0000000000000000 RSI: 00007ffd81f22ff0 RDI: 0000000000000007
[   47.247511] RBP: 00007ffd81f22f60 R08: 0000000000000000 R09: 0000000000000000
[   47.247589] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd81f22fd4
[   47.247666] R13: 00007ffd81f23b78 R14: 00007ffd81f23120 R15: 0000000000543540
| [   47.259079] ------------[ cut here ]------------
| [   47.259124] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: 1/64
| [   47.259217] Modules linked in:
| [   47.259299] Tainted: [W]=WARN
[   47.259322] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.259364] Workqueue: netns cleanup_net
[   47.259390] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.259418] 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
[   47.259510] RSP: 0018:ff6b6e7c80237c78 EFLAGS: 00010286
[   47.259541] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.259583] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff48d0ec81cd5700
[   47.259623] RBP: 0000000000000000 R08: ff48d0ec832ab550 R09: ff48d0ec82fae02c
[   47.259667] R10: ff48d0ec81d54118 R11: fefefefefefefeff R12: 0000000000000000
[   47.259709] R13: 0000000000000011 R14: ff48d0ec81d54000 R15: ff48d0ec81cd5700
[   47.259754] FS:  0000000000000000(0000) GS:ff48d0ed07d16000(0000) knlGS:0000000000000000
[   47.259797] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.259832] CR2: 00007fd92005a680 CR3: 000000000f842001 CR4: 0000000000771ef0
[   47.259870] PKRU: 55555554
[   47.259886] Call Trace:
[   47.259900]  <TASK>
[   47.259916]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.259948]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.259981]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.260004]  cleanup_net (net/core/net_namespace.c:702)
[   47.260028]  process_one_work (kernel/workqueue.c:3314)
[   47.260054]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.260076]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.260098]  kthread (kernel/kthread.c:436)
[   47.260120]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.260147]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.260172]  ? 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