======================================
| xx__-> [  138.644172] ------------[ cut here ]------------
| [  138.644222] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/292
| [  138.644276] Modules linked in:
| [  138.644353] Tainted: [W]=WARN
[  138.644374] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.644410] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  138.644437] 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
[  138.644533] RSP: 0018:ff8736c28058fcc8 EFLAGS: 00010286
[  138.644562] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  138.644601] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4417630303c300
[  138.644647] RBP: 0000000000000000 R08: ff44176301909110 R09: ff441763019bf02c
[  138.644690] R10: ff44176304784118 R11: fefefefefefefeff R12: 0000000000000000
[  138.644744] R13: 0000000000000010 R14: ff44176304784000 R15: ff4417630303c300
[  138.644787] FS:  00007fe35444b740(0000) GS:ff441763a8016000(0000) knlGS:0000000000000000
[  138.644833] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.644868] CR2: 0000557cd033d008 CR3: 0000000004663003 CR4: 0000000000771ef0
[  138.644910] PKRU: 55555554
[  138.644924] Call Trace:
[  138.644938]  <TASK>
[  138.644953]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  138.644975]  register_netdevice (net/core/dev.c:11488)
[  138.644997]  register_netdev (net/core/dev.c:11552)
[  138.645017]  loopback_net_init (drivers/net/loopback.c:218)
[  138.645041]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[  138.645072]  ops_init (net/core/net_namespace.c:137)
[  138.645092]  setup_net (net/core/net_namespace.c:446)
[  138.645111]  copy_net_ns (net/core/net_namespace.c:579)
[  138.645134]  create_new_namespaces (kernel/nsproxy.c:132)
[  138.645165]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[  138.645194]  ksys_unshare (kernel/fork.c:3243)
[  138.645218]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[  138.645238]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  138.645259]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  138.645285] RIP: 0033:0x7fe354546bcb
[  138.645307] 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
[  138.645399] RSP: 002b:00007ffd8c177a08 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  138.645440] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe354546bcb
[  138.645480] RDX: 0000000000000000 RSI: 00007ffd8c177770 RDI: 0000000040000000
[  138.645520] RBP: 00007ffd8c177d90 R08: 00007ffd8c177960 R09: 0000000000000000
[  138.645564] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  138.645607] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000557ccf0dcb68
| [  138.646239] ------------[ cut here ]------------
| [  138.646270] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/292
| [  138.646324] Modules linked in:
| [  138.646401] Tainted: [W]=WARN
[  138.646422] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.646457] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  138.646484] 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
[  138.646582] RSP: 0018:ff8736c28058fd68 EFLAGS: 00010286
[  138.646608] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  138.646650] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4417630303c300
[  138.646689] RBP: 0000000000000000 R08: ff4417630198c510 R09: ff441763019bc030
[  138.646735] R10: ff441763063fc118 R11: fefefefefefefeff R12: 0000000000000000
[  138.646778] R13: 0000000000000010 R14: ff441763063fc000 R15: ff4417630303c300
[  138.646823] FS:  00000000337fe400(0000) GS:ff441763a8016000(0000) knlGS:0000000000000000
[  138.646866] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.646893] CR2: 00007fa22b187000 CR3: 0000000004503004 CR4: 0000000000771ef0
[  138.646937] PKRU: 55555554
[  138.646949] Call Trace:
[  138.646960]  <TASK>
[  138.646974]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  138.646996]  register_netdevice (net/core/dev.c:11488)
[  138.647018]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[  138.647043]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[  138.647063]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  138.647087]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  138.647108]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  138.647135] RIP: 0033:0x47cc8d
[  138.647152] 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 
[  138.647249] RSP: 002b:00007ffe97333840 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  138.647289] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  138.647332] RDX: 00007ffe973338c0 RSI: 00000000400454ca RDI: 0000000000000005
[  138.647364] RBP: 00007ffe97333890 R08: 0000000000000000 R09: 0000000000000000
[  138.647403] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe97333d98
[  138.647449] R13: 00007ffe97333e18 R14: 0000000000000002 R15: 0000000000543540
| [  138.647536] ------------[ cut here ]------------
| [  138.647562] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/292
| [  138.647612] Modules linked in:
| [  138.647689] Tainted: [W]=WARN
[  138.647714] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.647745] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  138.647769] 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
[  138.647863] RSP: 0018:ff8736c28058fd60 EFLAGS: 00010286
[  138.647888] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[  138.647921] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4417630303c300
[  138.647961] RBP: 0000000000000002 R08: ff4417630198c510 R09: ff441763019bc030
[  138.648002] R10: ff441763063fc118 R11: fefefefefefefeff R12: 0000000000000000
[  138.648044] R13: 0000000000000010 R14: ff441763063fc000 R15: ff4417630303c300
[  138.648089] FS:  00000000337fe400(0000) GS:ff441763a8016000(0000) knlGS:0000000000000000
[  138.648135] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.648176] CR2: 00007fa22b187000 CR3: 0000000004503004 CR4: 0000000000771ef0
[  138.648224] PKRU: 55555554
[  138.648239] Call Trace:
[  138.648251]  <TASK>
[  138.648264]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  138.648287]  notifier_call_chain (kernel/notifier.c:85)
[  138.648306]  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)
[  138.648334]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[  138.648361]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[  138.648384]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  138.648404]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  138.648422]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  138.648449] RIP: 0033:0x47cc8d
[  138.648468] 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 
[  138.648558] RSP: 002b:00007ffe97333880 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  138.648604] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  138.648651] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[  138.648690] RBP: 00007ffe973338d0 R08: 0000000000000000 R09: 0000000000000000
[  138.648731] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe97333d98
[  138.648769] R13: 00007ffe97333e18 R14: 0000000000000002 R15: 0000000000543540
| [  138.648864] ------------[ cut here ]------------
| [  138.648892] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/292
| [  138.648943] Modules linked in:
| [  138.649017] Tainted: [W]=WARN
[  138.649037] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.649069] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  138.649097] 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
[  138.649199] RSP: 0018:ff8736c28058fc10 EFLAGS: 00010286
[  138.649226] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[  138.649268] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4417630303c300
[  138.649309] RBP: 0000000000000000 R08: ff4417630198c510 R09: ff44176309c33030
[  138.649348] R10: ff441763063fc118 R11: fefefefefefefeff R12: 0000000000000000
[  138.649390] R13: 0000000000000010 R14: ff441763063fc000 R15: ff4417630303c300
[  138.649434] FS:  00000000337fe400(0000) GS:ff441763a8016000(0000) knlGS:0000000000000000
[  138.649476] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.649509] CR2: 00007fa22b187000 CR3: 0000000004503004 CR4: 0000000000771ef0
[  138.649554] PKRU: 55555554
[  138.649568] Call Trace:
[  138.649583]  <TASK>
[  138.649597]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  138.649619]  __dev_notify_flags (net/core/dev.c:9787)
[  138.649643]  netif_change_flags (net/core/dev.c:9820)
[  138.649664]  dev_change_flags (net/core/dev_api.c:68)
[  138.649686]  devinet_ioctl (net/ipv4/devinet.c:1199)
[  138.649714]  inet_ioctl (net/ipv4/af_inet.c:1011)
[  138.649738]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[  138.649760]  sock_do_ioctl (net/socket.c:1313)
[  138.649784]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  138.649807]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  138.649831]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  138.649860] RIP: 0033:0x47cc8d
[  138.649880] 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 
[  138.649973] RSP: 002b:00007ffe97333860 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  138.650009] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  138.650049] RDX: 00007ffe973338d0 RSI: 0000000000008914 RDI: 0000000000000006
[  138.650091] RBP: 00007ffe973338b0 R08: 0000000000000000 R09: 0000000000000000
[  138.650131] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe97333d98
[  138.650177] R13: 00007ffe97333e18 R14: 0000000000000002 R15: 0000000000543540
| [  183.630276] ------------[ cut here ]------------
| [  183.630371] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/292
| [  183.630446] Modules linked in:
| [  183.630532] Tainted: [W]=WARN
[  183.630552] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  183.630587] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  183.630613] 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
[  183.631124] RSP: 0018:ff8736c28058fb58 EFLAGS: 00010286
[  183.631163] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  183.631214] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4417630322f400
[  183.631254] RBP: 0000000000000000 R08: ff4417630198c510 R09: ff44176309c33030
[  183.631294] R10: ff441763063fc118 R11: fefefefefefefeff R12: 0000000000000000
[  183.631334] R13: 0000000000000010 R14: ff441763063fc000 R15: ff4417630322f400
[  183.631380] FS:  0000000000000000(0000) GS:ff441763a8016000(0000) knlGS:0000000000000000
[  183.631434] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  183.631472] CR2: 00007fa22b187000 CR3: 0000000008042005 CR4: 0000000000771ef0
[  183.631515] PKRU: 55555554
[  183.631532] Call Trace:
[  183.631547]  <TASK>
[  183.631567]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  183.631595]  netif_close_many (net/core/dev.c:1804)
[  183.631624]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  183.631654]  ? __queue_work (kernel/workqueue.c:2401)
[  183.631680]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  183.631712]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[  183.631737]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[  183.631763]  __fput (fs/file_table.c:510)
[  183.631792]  task_work_run (kernel/task_work.c:233)
[  183.631816]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  183.631840]  do_group_exit (kernel/exit.c:1119)
[  183.631862]  get_signal (kernel/signal.c:3037)
[  183.631887]  ? __d_alloc (fs/dcache.c:1807 (discriminator 11))
[  183.631916]  ? alloc_empty_file (fs/file_table.c:262 (discriminator 11))
[  183.631938]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  183.631968]  ? alloc_file_pseudo (fs/file_table.c:398 fs/file_table.c:425)
[  183.631992]  ? __sys_socket (net/socket.c:575 net/socket.c:1815)
[  183.632018]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  183.632052]  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)
[  183.632075]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  183.632100] RIP: 0033:0x47ea2b
[  183.632129] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[  183.632173] RSP: 002b:00007ffe973332e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
[  183.632210] RAX: 0000000000000007 RBX: 00007ffe973333c0 RCX: 000000000047ea2b
[  183.632248] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[  183.632290] RBP: 00007ffe97333320 R08: 0000000000000041 R09: 00000000337ff3e0
[  183.632340] R10: 0000000000000040 R11: 0000000000000206 R12: 00007ffe97333d98
[  183.632386] R13: 00007ffe97333e18 R14: 00007ffe97333898 R15: 0000000000543540
| [  183.632550] ------------[ cut here ]------------
| [  183.632581] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/292
| [  183.632635] Modules linked in:
| [  183.632718] Tainted: [W]=WARN
[  183.632739] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  183.632775] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  183.632810] 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
[  183.632897] RSP: 0018:ff8736c28058fbc8 EFLAGS: 00010286
[  183.632923] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  183.632957] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff44176302ff4f00
[  183.633001] RBP: 0000000000000000 R08: ff4417630198c510 R09: ff441763047f0830
[  183.633042] R10: ff441763063fc118 R11: fefefefefefefeff R12: 0000000000000000
[  183.633083] R13: 0000000000000011 R14: ff441763063fc000 R15: ff44176302ff4f00
[  183.633128] FS:  0000000000000000(0000) GS:ff441763a7e96000(0000) knlGS:0000000000000000
[  183.633167] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  183.633204] CR2: 000055773c069d5c CR3: 0000000008042004 CR4: 0000000000771ef0
[  183.633244] PKRU: 55555554
[  183.633258] Call Trace:
[  183.633272]  <TASK>
[  183.633288]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  183.633318]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  183.633348]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[  183.633366]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[  183.633389]  __fput (fs/file_table.c:510)
[  183.633411]  task_work_run (kernel/task_work.c:233)
[  183.633435]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  183.633456]  do_group_exit (kernel/exit.c:1119)
[  183.633475]  get_signal (kernel/signal.c:3037)
[  183.633496]  ? __d_alloc (fs/dcache.c:1807 (discriminator 11))
[  183.633518]  ? alloc_empty_file (fs/file_table.c:262 (discriminator 11))
[  183.633540]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  183.633569]  ? alloc_file_pseudo (fs/file_table.c:398 fs/file_table.c:425)
[  183.633591]  ? __sys_socket (net/socket.c:575 net/socket.c:1815)
[  183.633614]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  183.633641]  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)
[  183.633662]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  183.633692] RIP: 0033:0x47ea2b
[  183.633715] Code: Unable to access opcode bytes at 0x47ea01.

Code starting with the faulting instruction
===========================================
[  183.633750] RSP: 002b:00007ffe973332e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
[  183.633790] RAX: 0000000000000007 RBX: 00007ffe973333c0 RCX: 000000000047ea2b
[  183.633833] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[  183.633877] RBP: 00007ffe97333320 R08: 0000000000000041 R09: 00000000337ff3e0
[  183.633915] R10: 0000000000000040 R11: 0000000000000206 R12: 00007ffe97333d98
[  183.633953] R13: 00007ffe97333e18 R14: 00007ffe97333898 R15: 0000000000543540
| [  183.641812] ------------[ cut here ]------------
| [  183.641843] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 0/12
| [  183.641900] Modules linked in:
| [  183.641977] Tainted: [W]=WARN
[  183.641997] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  183.642033] Workqueue: netns cleanup_net
[  183.642063] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  183.642090] 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
[  183.642182] RSP: 0018:ff8736c280067c78 EFLAGS: 00010286
[  183.642210] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  183.642251] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff44176302ff4f00
[  183.642291] RBP: 0000000000000000 R08: ff44176301909110 R09: ff441763047e902c
[  183.642338] R10: ff44176304784118 R11: fefefefefefefeff R12: 0000000000000000
[  183.642379] R13: 0000000000000011 R14: ff44176304784000 R15: ff44176302ff4f00
[  183.642421] FS:  0000000000000000(0000) GS:ff441763a7e96000(0000) knlGS:0000000000000000
[  183.642465] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  183.642504] CR2: 00007f03b0f0af98 CR3: 0000000008042005 CR4: 0000000000771ef0
[  183.642545] PKRU: 55555554
[  183.642559] Call Trace:
[  183.642574]  <TASK>
[  183.642589]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  183.642621]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  183.642658]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  183.642679]  cleanup_net (net/core/net_namespace.c:702)
[  183.642697]  process_one_work (kernel/workqueue.c:3314)
[  183.642720]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  183.642741]  ? rescuer_thread (kernel/workqueue.c:3672)
[  183.642764]  kthread (kernel/kthread.c:436)
[  183.642782]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[  183.642803]  ret_from_fork (arch/x86/kernel/process.c:158)
[  183.642827]  ? 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