======================================
| xx__-> [    2.246011] ------------[ cut here ]------------
| [    2.246062] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/159
| [    2.246119] Modules linked in:
| [    2.246212] Tainted: [W]=WARN
[    2.246241] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.246276] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.246308] 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
[    2.246408] RSP: 0018:ff2dcb53c03ffcc8 EFLAGS: 00010286
[    2.246435] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.246487] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff12f6e001926400
[    2.246529] RBP: 0000000000000000 R08: ff12f6e001ecb890 R09: ff12f6e006d2202c
[    2.246570] R10: ff12f6e00300d118 R11: fefefefefefefeff R12: 0000000000000000
[    2.246615] R13: 0000000000000010 R14: ff12f6e00300d000 R15: ff12f6e001926400
[    2.246656] FS:  00007fa8925cc740(0000) GS:ff12f6e0a6816000(0000) knlGS:0000000000000000
[    2.246692] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.246728] CR2: 000055fed7bd8310 CR3: 00000000033d8001 CR4: 0000000000771ef0
[    2.246772] PKRU: 55555554
[    2.246785] Call Trace:
[    2.246801]  <TASK>
[    2.246818]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.246841]  register_netdevice (net/core/dev.c:11488)
[    2.246864]  register_netdev (net/core/dev.c:11552)
[    2.246885]  loopback_net_init (drivers/net/loopback.c:218)
[    2.246913]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.246937]  ops_init (net/core/net_namespace.c:137)
[    2.246961]  setup_net (net/core/net_namespace.c:446)
[    2.246985]  copy_net_ns (net/core/net_namespace.c:579)
[    2.247007]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.247040]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.247066]  ksys_unshare (kernel/fork.c:3243)
[    2.247089]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.247112]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.247136]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.247165] RIP: 0033:0x7fa8926c7bcb
[    2.247192] 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
[    2.247287] RSP: 002b:00007ffe362ec1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.247330] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa8926c7bcb
[    2.247375] RDX: 0000000000000000 RSI: 00007ffe362ebf60 RDI: 0000000040000000
[    2.247419] RBP: 00007ffe362ec580 R08: 00007ffe362ec150 R09: 0000000000000000
[    2.247468] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.247512] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055fed7bdbb68
| [    2.250986] ------------[ cut here ]------------
| [    2.251020] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
| [    2.251074] Modules linked in:
| [    2.251146] Tainted: [W]=WARN
[    2.251166] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.251208] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.251238] 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
[    2.251330] RSP: 0018:ff2dcb53c03ffd68 EFLAGS: 00010286
[    2.251357] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.251399] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff12f6e001926400
[    2.251438] RBP: 0000000000000000 R08: ff12f6e00196af90 R09: ff12f6e006d27030
[    2.251483] R10: ff12f6e006cb8118 R11: fefefefefefefeff R12: 0000000000000000
[    2.251530] R13: 0000000000000010 R14: ff12f6e006cb8000 R15: ff12f6e001926400
[    2.251576] FS:  000000003ab2e400(0000) GS:ff12f6e0a6816000(0000) knlGS:0000000000000000
[    2.251620] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.251660] CR2: 00007ff145476000 CR3: 0000000006ca7002 CR4: 0000000000771ef0
[    2.251702] PKRU: 55555554
[    2.251715] Call Trace:
[    2.251729]  <TASK>
[    2.251744]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.251766]  register_netdevice (net/core/dev.c:11488)
[    2.251788]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.251810]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.251833]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.251856]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.251877]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.251909] RIP: 0033:0x47cc8d
[    2.251932] 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 
[    2.252031] RSP: 002b:00007ffd6ae7a0a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.252071] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.252111] RDX: 00007ffd6ae7a120 RSI: 00000000400454ca RDI: 0000000000000005
[    2.252154] RBP: 00007ffd6ae7a0f0 R08: 0000000000000000 R09: 0000000000000000
[    2.252204] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6ae7a5f8
[    2.252245] R13: 00007ffd6ae7a678 R14: 0000000000000002 R15: 0000000000543540
| [    2.252344] ------------[ cut here ]------------
| [    2.252371] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
| [    2.252421] Modules linked in:
| [    2.252500] Tainted: [W]=WARN
[    2.252521] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.252554] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.252583] 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
[    2.252695] RSP: 0018:ff2dcb53c03ffd60 EFLAGS: 00010286
[    2.252726] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.252765] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff12f6e001926400
[    2.252808] RBP: 0000000000000002 R08: ff12f6e00196af90 R09: ff12f6e006d27030
[    2.252850] R10: ff12f6e006cb8118 R11: fefefefefefefeff R12: 0000000000000000
[    2.252893] R13: 0000000000000010 R14: ff12f6e006cb8000 R15: ff12f6e001926400
[    2.252942] FS:  000000003ab2e400(0000) GS:ff12f6e0a6816000(0000) knlGS:0000000000000000
[    2.252985] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.253017] CR2: 00007ff145476000 CR3: 0000000006ca7002 CR4: 0000000000771ef0
[    2.253058] PKRU: 55555554
[    2.253073] Call Trace:
[    2.253090]  <TASK>
[    2.253102]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.253125]  notifier_call_chain (kernel/notifier.c:85)
[    2.253148]  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)
[    2.253177]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.253199]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.253221]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.253242]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.253263]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.253288] RIP: 0033:0x47cc8d
[    2.253309] 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 
[    2.253401] RSP: 002b:00007ffd6ae7a0e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.253441] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.253490] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.253527] RBP: 00007ffd6ae7a130 R08: 0000000000000000 R09: 0000000000000000
[    2.253565] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6ae7a5f8
[    2.253613] R13: 00007ffd6ae7a678 R14: 0000000000000002 R15: 0000000000543540
| [    2.253723] ------------[ cut here ]------------
| [    2.253751] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
| [    2.253802] Modules linked in:
| [    2.253878] Tainted: [W]=WARN
[    2.253898] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.253936] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.253966] 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
[    2.254062] RSP: 0018:ff2dcb53c03ffc10 EFLAGS: 00010286
[    2.254089] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.254132] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff12f6e001926400
[    2.254172] RBP: 0000000000000000 R08: ff12f6e00196af90 R09: ff12f6e006d24030
[    2.254214] R10: ff12f6e006cb8118 R11: fefefefefefefeff R12: 0000000000000000
[    2.254255] R13: 0000000000000010 R14: ff12f6e006cb8000 R15: ff12f6e001926400
[    2.254296] FS:  000000003ab2e400(0000) GS:ff12f6e0a6816000(0000) knlGS:0000000000000000
[    2.254338] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.254374] CR2: 00007ff145476000 CR3: 0000000006ca7002 CR4: 0000000000771ef0
[    2.254412] PKRU: 55555554
[    2.254426] Call Trace:
[    2.254440]  <TASK>
[    2.254461]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.254484]  __dev_notify_flags (net/core/dev.c:9787)
[    2.254509]  netif_change_flags (net/core/dev.c:9820)
[    2.254528]  dev_change_flags (net/core/dev_api.c:68)
[    2.254550]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.254573]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.254595]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.254618]  sock_do_ioctl (net/socket.c:1313)
[    2.254641]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.254664]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.254685]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.254714] RIP: 0033:0x47cc8d
[    2.254735] 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 
[    2.254827] RSP: 002b:00007ffd6ae7a0c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.254874] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.254914] RDX: 00007ffd6ae7a130 RSI: 0000000000008914 RDI: 0000000000000006
[    2.254956] RBP: 00007ffd6ae7a110 R08: 0000000000000000 R09: 0000000000000000
[    2.254998] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6ae7a5f8
[    2.255040] R13: 00007ffd6ae7a678 R14: 0000000000000002 R15: 0000000000543540
| [   47.227804] ------------[ cut here ]------------
| [   47.227891] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
| [   47.227957] Modules linked in:
| [   47.228045] Tainted: [W]=WARN
[   47.228069] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.228103] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.228132] 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
[   47.228234] RSP: 0018:ff2dcb53c03ffb58 EFLAGS: 00010286
[   47.228263] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.228301] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff12f6e002e88f00
[   47.228339] RBP: 0000000000000000 R08: ff12f6e00196af90 R09: ff12f6e006fcb030
[   47.228378] R10: ff12f6e006cb8118 R11: fefefefefefefeff R12: 0000000000000000
[   47.228417] R13: 0000000000000010 R14: ff12f6e006cb8000 R15: ff12f6e002e88f00
[   47.228461] FS:  0000000000000000(0000) GS:ff12f6e0a6816000(0000) knlGS:0000000000000000
[   47.228501] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.228534] CR2: 00005564b219ad60 CR3: 0000000005442005 CR4: 0000000000771ef0
[   47.228578] PKRU: 55555554
[   47.228594] Call Trace:
[   47.228611]  <TASK>
[   47.228626]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.228647]  netif_close_many (net/core/dev.c:1804)
[   47.228669]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.228703]  ? __queue_work (kernel/workqueue.c:2401)
[   47.228725]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.228753]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.228778]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.228804]  __fput (fs/file_table.c:510)
[   47.228827]  task_work_run (kernel/task_work.c:233)
[   47.228848]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.228871]  ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1345)
[   47.228894]  do_group_exit (kernel/exit.c:1119)
[   47.228915]  get_signal (kernel/signal.c:3037)
[   47.228939]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.228968]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.228998]  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)
[   47.229021]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.229051] RIP: 0033:0x4c2d9e
[   47.229073] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.229105] RSP: 002b:00007ffd6ae79a50 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.229149] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   47.229201] RDX: 0000000000000014 RSI: 00007ffd6ae79b30 RDI: 0000000000000007
[   47.229239] RBP: 00007ffd6ae79a60 R08: 00007ffd6ae79af0 R09: 000000000000000c
[   47.229279] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd6ae7a5f8
[   47.229324] R13: 00007ffd6ae7a678 R14: 00007ffd6ae79c20 R15: 0000000000543540
| [   47.229470] ------------[ cut here ]------------
| [   47.229497] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
| [   47.229544] Modules linked in:
| [   47.229628] Tainted: [W]=WARN
[   47.229652] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.229685] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.229713] 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
[   47.229800] RSP: 0018:ff2dcb53c03ffbc8 EFLAGS: 00010286
[   47.229827] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.229866] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff12f6e002e88f00
[   47.229903] RBP: 0000000000000000 R08: ff12f6e00196af90 R09: ff12f6e006d29030
[   47.229939] R10: ff12f6e006cb8118 R11: fefefefefefefeff R12: 0000000000000000
[   47.229976] R13: 0000000000000011 R14: ff12f6e006cb8000 R15: ff12f6e002e88f00
[   47.230022] FS:  0000000000000000(0000) GS:ff12f6e0a6816000(0000) knlGS:0000000000000000
[   47.230061] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.230098] CR2: 00005564b219ad60 CR3: 0000000005442005 CR4: 0000000000771ef0
[   47.230143] PKRU: 55555554
[   47.230157] Call Trace:
[   47.230172]  <TASK>
[   47.230469]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.230501]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.230533]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.230559]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.230582]  __fput (fs/file_table.c:510)
[   47.230602]  task_work_run (kernel/task_work.c:233)
[   47.230624]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.230645]  ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1345)
[   47.230669]  do_group_exit (kernel/exit.c:1119)
[   47.230690]  get_signal (kernel/signal.c:3037)
[   47.230713]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.230740]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.230769]  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)
[   47.230790]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.230817] RIP: 0033:0x4c2d9e
[   47.230836] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.230868] RSP: 002b:00007ffd6ae79a50 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.230915] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   47.230956] RDX: 0000000000000014 RSI: 00007ffd6ae79b30 RDI: 0000000000000007
[   47.231000] RBP: 00007ffd6ae79a60 R08: 00007ffd6ae79af0 R09: 000000000000000c
[   47.231043] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd6ae7a5f8
[   47.231079] R13: 00007ffd6ae7a678 R14: 00007ffd6ae79c20 R15: 0000000000543540
| [   47.242269] ------------[ cut here ]------------
| [   47.242315] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/65
| [   47.242375] Modules linked in:
| [   47.242454] Tainted: [W]=WARN
[   47.242475] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.242513] Workqueue: netns cleanup_net
[   47.242539] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.242576] 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
[   47.242669] RSP: 0018:ff2dcb53c023fc78 EFLAGS: 00010286
[   47.242693] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.242734] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff12f6e0018a0c00
[   47.242773] RBP: 0000000000000000 R08: ff12f6e001ecb890 R09: ff12f6e0019ba02c
[   47.242812] R10: ff12f6e00300d118 R11: fefefefefefefeff R12: 0000000000000000
[   47.242852] R13: 0000000000000011 R14: ff12f6e00300d000 R15: ff12f6e0018a0c00
[   47.242897] FS:  0000000000000000(0000) GS:ff12f6e0a6696000(0000) knlGS:0000000000000000
[   47.242939] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.242972] CR2: 00007f6a4bd23f98 CR3: 0000000005442003 CR4: 0000000000771ef0
[   47.243011] PKRU: 55555554
[   47.243026] Call Trace:
[   47.243041]  <TASK>
[   47.243056]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.243088]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.243117]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.243137]  cleanup_net (net/core/net_namespace.c:702)
[   47.243160]  process_one_work (kernel/workqueue.c:3314)
[   47.243197]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.243218]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.243241]  kthread (kernel/kthread.c:436)
[   47.243266]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.243289]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.243315]  ? 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