======================================
| xx__-> [  547.841267] ------------[ cut here ]------------
| [  547.841315] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/690
| [  547.841366] Modules linked in:
| [  547.841447] Tainted: [W]=WARN
[  547.841469] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  547.841501] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  547.841535] 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
[  547.841632] RSP: 0018:ff71f0c380a77cc8 EFLAGS: 00010286
[  547.841663] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  547.841704] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff23231081842600
[  547.841747] RBP: 0000000000000000 R08: ff2323108324f890 R09: ff23231082dfe02c
[  547.841787] R10: ff232310819bf118 R11: fefefefefefefeff R12: 0000000000000000
[  547.841829] R13: 0000000000000010 R14: ff232310819bf000 R15: ff23231081842600
[  547.841878] FS:  00007fdada867740(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  547.841928] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  547.841962] CR2: 0000562c300c6008 CR3: 00000000030ac002 CR4: 0000000000771ef0
[  547.842009] PKRU: 55555554
[  547.842024] Call Trace:
[  547.842044]  <TASK>
[  547.842059]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  547.842081]  register_netdevice (net/core/dev.c:11488)
[  547.842103]  register_netdev (net/core/dev.c:11552)
[  547.842123]  loopback_net_init (drivers/net/loopback.c:218)
[  547.842149]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[  547.842182]  ops_init (net/core/net_namespace.c:137)
[  547.842206]  setup_net (net/core/net_namespace.c:446)
[  547.842228]  copy_net_ns (net/core/net_namespace.c:579)
[  547.842250]  create_new_namespaces (kernel/nsproxy.c:132)
[  547.842274]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[  547.842302]  ksys_unshare (kernel/fork.c:3243)
[  547.842324]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[  547.842351]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  547.842380]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  547.842409] RIP: 0033:0x7fdada962bcb
[  547.842430] 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
[  547.842519] RSP: 002b:00007ffc9010ee38 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  547.842562] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdada962bcb
[  547.842606] RDX: 0000000000000000 RSI: 00007ffc9010eba0 RDI: 0000000040000000
[  547.842648] RBP: 00007ffc9010f1c0 R08: 00007ffc9010ed90 R09: 0000000000000000
[  547.842689] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  547.842740] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000562bff22bb68
| [  547.843425] ------------[ cut here ]------------
| [  547.843454] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/690
| [  547.843512] Modules linked in:
| [  547.843591] Tainted: [W]=WARN
[  547.843613] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  547.843650] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  547.843679] 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
[  547.843788] RSP: 0018:ff71f0c380a77d68 EFLAGS: 00010286
[  547.843818] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  547.843862] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff23231081842600
[  547.843906] RBP: 0000000000000000 R08: ff23231083142150 R09: ff23231084489030
[  547.843956] R10: ff232310831b8118 R11: fefefefefefefeff R12: 0000000000000000
[  547.844002] R13: 0000000000000010 R14: ff232310831b8000 R15: ff23231081842600
[  547.844048] FS:  0000000011994400(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  547.844086] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  547.844119] CR2: 00007f8c9676c000 CR3: 0000000003093003 CR4: 0000000000771ef0
[  547.844163] PKRU: 55555554
[  547.844177] Call Trace:
[  547.844193]  <TASK>
[  547.844208]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  547.844231]  register_netdevice (net/core/dev.c:11488)
[  547.844258]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[  547.844281]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[  547.844305]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  547.844331]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  547.844365]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  547.844393] RIP: 0033:0x47cc8d
[  547.844416] 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 
[  547.844517] RSP: 002b:00007ffec8a71b00 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  547.844560] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  547.844602] RDX: 00007ffec8a71b80 RSI: 00000000400454ca RDI: 0000000000000005
[  547.844646] RBP: 00007ffec8a71b50 R08: 0000000000000000 R09: 0000000000000000
[  547.844690] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffec8a72058
[  547.844737] R13: 00007ffec8a720d8 R14: 0000000000000002 R15: 0000000000543540
| [  547.844835] ------------[ cut here ]------------
| [  547.844862] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/690
| [  547.844907] Modules linked in:
| [  547.844988] Tainted: [W]=WARN
[  547.845011] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  547.845043] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  547.845070] 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
[  547.845166] RSP: 0018:ff71f0c380a77d60 EFLAGS: 00010286
[  547.845196] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[  547.845238] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff23231081842600
[  547.845281] RBP: 0000000000000002 R08: ff23231083142150 R09: ff23231084489030
[  547.845315] R10: ff232310831b8118 R11: fefefefefefefeff R12: 0000000000000000
[  547.845358] R13: 0000000000000010 R14: ff232310831b8000 R15: ff23231081842600
[  547.845404] FS:  0000000011994400(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  547.845444] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  547.845478] CR2: 00007f8c9676c000 CR3: 0000000003093003 CR4: 0000000000771ef0
[  547.845523] PKRU: 55555554
[  547.845537] Call Trace:
[  547.845550]  <TASK>
[  547.845566]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  547.845588]  notifier_call_chain (kernel/notifier.c:85)
[  547.845609]  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)
[  547.845639]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[  547.845661]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[  547.845681]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  547.845704]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  547.845728]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  547.845754] RIP: 0033:0x47cc8d
[  547.845775] 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 
[  547.845872] RSP: 002b:00007ffec8a71b40 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  547.845915] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  547.845953] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[  547.846000] RBP: 00007ffec8a71b90 R08: 0000000000000005 R09: 0000000000001ff0
[  547.846042] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffec8a72058
[  547.846084] R13: 00007ffec8a720d8 R14: 0000000000000002 R15: 0000000000543540
| [  547.846180] ------------[ cut here ]------------
| [  547.846206] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/690
| [  547.846258] Modules linked in:
| [  547.846340] Tainted: [W]=WARN
[  547.846363] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  547.846389] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  547.846420] 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
[  547.846517] RSP: 0018:ff71f0c380a77c10 EFLAGS: 00010286
[  547.846547] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[  547.846589] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff23231081842600
[  547.846632] RBP: 0000000000000000 R08: ff23231083142150 R09: ff232310819ba030
[  547.846674] R10: ff232310831b8118 R11: fefefefefefefeff R12: 0000000000000000
[  547.846720] R13: 0000000000000010 R14: ff232310831b8000 R15: ff23231081842600
[  547.846764] FS:  0000000011994400(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  547.846804] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  547.846839] CR2: 00007f8c9676c000 CR3: 0000000003093003 CR4: 0000000000771ef0
[  547.846880] PKRU: 55555554
[  547.846892] Call Trace:
[  547.846907]  <TASK>
[  547.846920]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  547.846940]  __dev_notify_flags (net/core/dev.c:9787)
[  547.846964]  netif_change_flags (net/core/dev.c:9820)
[  547.846983]  dev_change_flags (net/core/dev_api.c:68)
[  547.847006]  devinet_ioctl (net/ipv4/devinet.c:1199)
[  547.847031]  inet_ioctl (net/ipv4/af_inet.c:1011)
[  547.847052]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[  547.847074]  sock_do_ioctl (net/socket.c:1313)
[  547.847099]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  547.847122]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  547.847145]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  547.847172] RIP: 0033:0x47cc8d
[  547.847193] 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 
[  547.847299] RSP: 002b:00007ffec8a71b20 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  547.847340] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  547.847388] RDX: 00007ffec8a71b90 RSI: 0000000000008914 RDI: 0000000000000006
[  547.847431] RBP: 00007ffec8a71b70 R08: 0000000000000005 R09: 0000000000001ff0
[  547.847474] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffec8a72058
[  547.847512] R13: 00007ffec8a720d8 R14: 0000000000000002 R15: 0000000000543540
| [  592.826334] ------------[ cut here ]------------
| [  592.826403] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/690
| [  592.826470] Modules linked in:
| [  592.826571] Tainted: [W]=WARN
[  592.826598] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  592.826631] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  592.826659] 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
[  592.826762] RSP: 0018:ff71f0c380a77b58 EFLAGS: 00010286
[  592.826790] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  592.826835] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108312dc00
[  592.826884] RBP: 0000000000000000 R08: ff23231083142150 R09: ff232310819ba030
[  592.826924] R10: ff232310831b8118 R11: fefefefefefefeff R12: 0000000000000000
[  592.826966] R13: 0000000000000010 R14: ff232310831b8000 R15: ff2323108312dc00
[  592.827159] FS:  0000000000000000(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  592.827204] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  592.827244] CR2: 00007f8c9676c000 CR3: 0000000020c42004 CR4: 0000000000771ef0
[  592.827289] PKRU: 55555554
[  592.827303] Call Trace:
[  592.827319]  <TASK>
[  592.827336]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  592.827362]  netif_close_many (net/core/dev.c:1804)
[  592.827387]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  592.827412]  ? __queue_work (kernel/workqueue.c:2401)
[  592.827437]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  592.827463]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[  592.827484]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[  592.827507]  __fput (fs/file_table.c:510)
[  592.827531]  task_work_run (kernel/task_work.c:233)
[  592.827556]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  592.827581]  do_group_exit (kernel/exit.c:1119)
[  592.827603]  get_signal (kernel/signal.c:3037)
[  592.827628]  ? __d_alloc (fs/dcache.c:1807 (discriminator 11))
[  592.827654]  ? alloc_empty_file (fs/file_table.c:262 (discriminator 11))
[  592.827675]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  592.827707]  ? alloc_file_pseudo (fs/file_table.c:398 fs/file_table.c:425)
[  592.827728]  ? __sys_socket (net/socket.c:575 net/socket.c:1815)
[  592.827751]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  592.827783]  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)
[  592.827808]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  592.827844] RIP: 0033:0x47ea2b
[  592.827873] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[  592.827908] RSP: 002b:00007ffec8a715a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[  592.827952] RAX: 0000000000000007 RBX: 00007ffec8a71680 RCX: 000000000047ea2b
[  592.827993] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[  592.828035] RBP: 00007ffec8a715e0 R08: 0000000000000041 R09: 00000000119953e0
[  592.828078] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffec8a72058
[  592.828119] R13: 00007ffec8a720d8 R14: 00007ffec8a71b58 R15: 0000000000543540
| [  592.828373] ------------[ cut here ]------------
| [  592.828399] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/690
| [  592.828450] Modules linked in:
| [  592.828528] Tainted: [W]=WARN
[  592.828551] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  592.828585] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  592.828612] 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
[  592.828708] RSP: 0018:ff71f0c380a77bc8 EFLAGS: 00010286
[  592.828735] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  592.828769] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108312dc00
[  592.828809] RBP: 0000000000000000 R08: ff23231083142150 R09: ff23231086510030
[  592.828853] R10: ff232310831b8118 R11: fefefefefefefeff R12: 0000000000000000
[  592.828901] R13: 0000000000000011 R14: ff232310831b8000 R15: ff2323108312dc00
[  592.828948] FS:  0000000000000000(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  592.828993] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  592.829032] CR2: 00007f883e4e5680 CR3: 0000000020c42004 CR4: 0000000000771ef0
[  592.829075] PKRU: 55555554
[  592.829089] Call Trace:
[  592.829105]  <TASK>
[  592.829121]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  592.829153]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  592.829182]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[  592.829204]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[  592.829223]  __fput (fs/file_table.c:510)
[  592.829248]  task_work_run (kernel/task_work.c:233)
[  592.829269]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  592.829290]  do_group_exit (kernel/exit.c:1119)
[  592.829312]  get_signal (kernel/signal.c:3037)
[  592.829334]  ? __d_alloc (fs/dcache.c:1807 (discriminator 11))
[  592.829355]  ? alloc_empty_file (fs/file_table.c:262 (discriminator 11))
[  592.829376]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  592.829407]  ? alloc_file_pseudo (fs/file_table.c:398 fs/file_table.c:425)
[  592.829429]  ? __sys_socket (net/socket.c:575 net/socket.c:1815)
[  592.829451]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  592.829480]  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)
[  592.829501]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  592.829529] RIP: 0033:0x47ea2b
[  592.829550] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[  592.829586] RSP: 002b:00007ffec8a715a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[  592.829632] RAX: 0000000000000007 RBX: 00007ffec8a71680 RCX: 000000000047ea2b
[  592.829669] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[  592.829709] RBP: 00007ffec8a715e0 R08: 0000000000000041 R09: 00000000119953e0
[  592.829751] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffec8a72058
[  592.829790] R13: 00007ffec8a720d8 R14: 00007ffec8a71b58 R15: 0000000000543540
| [  592.841115] ------------[ cut here ]------------
| [  592.841155] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: 0/12
| [  592.841219] Modules linked in:
| [  592.841294] Tainted: [W]=WARN
[  592.841317] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  592.841359] Workqueue: netns cleanup_net
[  592.841382] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  592.841410] 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
[  592.841506] RSP: 0018:ff71f0c380067c78 EFLAGS: 00010286
[  592.841532] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  592.841572] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108182b100
[  592.841611] RBP: 0000000000000000 R08: ff2323108324f890 R09: ff2323108463702c
[  592.841653] R10: ff232310819bf118 R11: fefefefefefefeff R12: 0000000000000000
[  592.841694] R13: 0000000000000011 R14: ff232310819bf000 R15: ff2323108182b100
[  592.841738] FS:  0000000000000000(0000) GS:ff23231129716000(0000) knlGS:0000000000000000
[  592.841781] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  592.841815] CR2: 00007f883e35e770 CR3: 0000000020c42001 CR4: 0000000000771ef0
[  592.841868] PKRU: 55555554
[  592.841884] Call Trace:
[  592.841900]  <TASK>
[  592.841915]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  592.841943]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  592.841972]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  592.842005]  cleanup_net (net/core/net_namespace.c:702)
[  592.842027]  process_one_work (kernel/workqueue.c:3314)
[  592.842050]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  592.842074]  ? rescuer_thread (kernel/workqueue.c:3672)
[  592.842095]  kthread (kernel/kthread.c:436)
[  592.842115]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[  592.842138]  ret_from_fork (arch/x86/kernel/process.c:158)
[  592.842160]  ? 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