======================================
| xx__-> [    2.395699] ------------[ cut here ]------------
| [    2.395798] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: unshare/160
| [    2.395900] Modules linked in:
| [    2.396066] Tainted: [W]=WARN
[    2.396124] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.396206] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.396272] 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
[    2.396420] RSP: 0018:ff6082afc037fcc8 EFLAGS: 00010286
[    2.396486] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.396567] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff32167a03037a00
[    2.396646] RBP: 0000000000000000 R08: ff32167a018c2f50 R09: ff32167a04dd902c
[    2.396724] R10: ff32167a02f3c118 R11: fefefefefefefeff R12: 0000000000000000
[    2.396803] R13: 0000000000000010 R14: ff32167a02f3c000 R15: ff32167a03037a00
[    2.396889] FS:  00007f67c70a1740(0000) GS:ff32167aa9b96000(0000) knlGS:0000000000000000
[    2.396973] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.397045] CR2: 0000562bd377c310 CR3: 0000000004d96002 CR4: 0000000000771ef0
[    2.397129] PKRU: 55555554
[    2.397188] Call Trace:
[    2.397250]  <TASK>
[    2.397304]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.397365]  register_netdevice (net/core/dev.c:11488)
[    2.397435]  register_netdev (net/core/dev.c:11552)
[    2.397494]  loopback_net_init (drivers/net/loopback.c:218)
[    2.397557]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.397627]  ops_init (net/core/net_namespace.c:137)
[    2.397689]  setup_net (net/core/net_namespace.c:446)
[    2.397749]  copy_net_ns (net/core/net_namespace.c:579)
[    2.397811]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.397882]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.397950]  ksys_unshare (kernel/fork.c:3243)
[    2.398013]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.398073]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.398134]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.398210] RIP: 0033:0x7f67c719cbcb
[    2.398270] 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
[    2.398415] RSP: 002b:00007fff82c54b78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.398497] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f67c719cbcb
[    2.398579] RDX: 0000000000000000 RSI: 00007fff82c548e0 RDI: 0000000040000000
[    2.398659] RBP: 00007fff82c54f00 R08: 00007fff82c54ad0 R09: 0000000000000000
[    2.398738] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.398819] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000562bd377fb68
| [    2.402633] ------------[ cut here ]------------
| [    2.402714] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/160
| [    2.402806] Modules linked in:
| [    2.402966] Tainted: [W]=WARN
[    2.403024] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.403097] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.403164] 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
[    2.403303] RSP: 0018:ff6082afc037fd68 EFLAGS: 00010286
[    2.403369] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.403453] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff32167a03037a00
[    2.403532] RBP: 0000000000000000 R08: ff32167a0321a810 R09: ff32167a04dde030
[    2.403613] R10: ff32167a04cc0118 R11: fefefefefefefeff R12: 0000000000000000
[    2.403694] R13: 0000000000000010 R14: ff32167a04cc0000 R15: ff32167a03037a00
[    2.403778] FS:  000000002e111400(0000) GS:ff32167aa9b96000(0000) knlGS:0000000000000000
[    2.403862] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.403937] CR2: 00007f426c4fb000 CR3: 0000000003151003 CR4: 0000000000771ef0
[    2.404019] PKRU: 55555554
[    2.404070] Call Trace:
[    2.404122]  <TASK>
[    2.404174]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.404242]  register_netdevice (net/core/dev.c:11488)
[    2.404303]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.404366]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.404432]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.404494]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.404557]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.404624] RIP: 0033:0x47cc8d
[    2.404684] 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 
[    2.404818] RSP: 002b:00007ffd608b91f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.404904] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.404984] RDX: 00007ffd608b9270 RSI: 00000000400454ca RDI: 0000000000000005
[    2.405065] RBP: 00007ffd608b9240 R08: 0000000000000000 R09: 0000000000000000
[    2.405145] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd608b9748
[    2.405234] R13: 00007ffd608b97c8 R14: 0000000000000002 R15: 0000000000543540
| [    2.405459] ------------[ cut here ]------------
| [    2.405524] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/160
| [    2.405615] Modules linked in:
| [    2.405769] Tainted: [W]=WARN
[    2.405826] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.405905] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.405972] 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
[    2.406110] RSP: 0018:ff6082afc037fd60 EFLAGS: 00010286
[    2.406184] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.406265] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff32167a03037a00
[    2.406346] RBP: 0000000000000002 R08: ff32167a0321a810 R09: ff32167a04dde030
[    2.406431] R10: ff32167a04cc0118 R11: fefefefefefefeff R12: 0000000000000000
[    2.406511] R13: 0000000000000010 R14: ff32167a04cc0000 R15: ff32167a03037a00
[    2.406595] FS:  000000002e111400(0000) GS:ff32167aa9b96000(0000) knlGS:0000000000000000
[    2.406681] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.406754] CR2: 00007f426c4fb000 CR3: 0000000003151003 CR4: 0000000000771ef0
[    2.406836] PKRU: 55555554
[    2.406889] Call Trace:
[    2.406941]  <TASK>
[    2.406993]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.407054]  notifier_call_chain (kernel/notifier.c:85)
[    2.407116]  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)
[    2.407192]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.407254]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.407315]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.407376]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.407441]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.407507] RIP: 0033:0x47cc8d
[    2.407567] 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 
[    2.407701] RSP: 002b:00007ffd608b9230 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.407784] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.407867] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.407948] RBP: 00007ffd608b9280 R08: 0000000000000005 R09: 0000000000001ff0
[    2.408029] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffd608b9748
[    2.408108] R13: 00007ffd608b97c8 R14: 0000000000000002 R15: 0000000000543540
| [    2.408369] ------------[ cut here ]------------
| [    2.408439] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/160
| [    2.408527] Modules linked in:
| [    2.408680] Tainted: [W]=WARN
[    2.408738] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.408831] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.408903] 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
[    2.409042] RSP: 0018:ff6082afc037fc10 EFLAGS: 00010286
[    2.409110] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.409198] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff32167a03037a00
[    2.409279] RBP: 0000000000000000 R08: ff32167a0321a810 R09: ff32167a04deb030
[    2.409358] R10: ff32167a04cc0118 R11: fefefefefefefeff R12: 0000000000000000
[    2.409445] R13: 0000000000000010 R14: ff32167a04cc0000 R15: ff32167a03037a00
[    2.409529] FS:  000000002e111400(0000) GS:ff32167aa9b96000(0000) knlGS:0000000000000000
[    2.409612] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.409684] CR2: 00007f426c4fb000 CR3: 0000000003151003 CR4: 0000000000771ef0
[    2.409769] PKRU: 55555554
[    2.409820] Call Trace:
[    2.409872]  <TASK>
[    2.409925]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.409986]  __dev_notify_flags (net/core/dev.c:9787)
[    2.410047]  netif_change_flags (net/core/dev.c:9820)
[    2.410108]  dev_change_flags (net/core/dev_api.c:68)
[    2.410168]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.410238]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.410298]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.410358]  sock_do_ioctl (net/socket.c:1313)
[    2.410425]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.410486]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.410547]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.410614] RIP: 0033:0x47cc8d
[    2.410674] 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 
[    2.410812] RSP: 002b:00007ffd608b9210 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.410897] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.410978] RDX: 00007ffd608b9280 RSI: 0000000000008914 RDI: 0000000000000006
[    2.411061] RBP: 00007ffd608b9260 R08: 0000000000000005 R09: 0000000000001ff0
[    2.411142] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffd608b9748
[    2.411228] R13: 00007ffd608b97c8 R14: 0000000000000002 R15: 0000000000543540
| [   47.378627] ------------[ cut here ]------------
| [   47.378732] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/160
| [   47.378834] Modules linked in:
| [   47.379014] Tainted: [W]=WARN
[   47.379110] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.379186] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.379258] 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
[   47.379628] RSP: 0018:ff6082afc037fb58 EFLAGS: 00010286
[   47.379705] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.379791] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff32167a03037e00
[   47.379876] RBP: 0000000000000000 R08: ff32167a0321a810 R09: ff32167a04deb030
[   47.379962] R10: ff32167a04cc0118 R11: fefefefefefefeff R12: 0000000000000000
[   47.380045] R13: 0000000000000010 R14: ff32167a04cc0000 R15: ff32167a03037e00
[   47.380133] FS:  0000000000000000(0000) GS:ff32167aa9b96000(0000) knlGS:0000000000000000
[   47.380219] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.380295] CR2: 00007f426c4fb000 CR3: 0000000028242005 CR4: 0000000000771ef0
[   47.380381] PKRU: 55555554
[   47.380440] Call Trace:
[   47.380494]  <TASK>
[   47.380555]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.380619]  netif_close_many (net/core/dev.c:1804)
[   47.380683]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.380752]  ? __queue_work (kernel/workqueue.c:2401)
[   47.380816]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.380887]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.380952]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.381014]  __fput (fs/file_table.c:510)
[   47.381079]  task_work_run (kernel/task_work.c:233)
[   47.381142]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.381206]  do_group_exit (kernel/exit.c:1119)
[   47.381268]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   47.381330]  get_signal (kernel/signal.c:3037)
[   47.381401]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.381473]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.381554]  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)
[   47.381996]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.382090] RIP: 0033:0x4c2d9e
[   47.382165] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.382266] RSP: 002b:00007ffd608b8ba0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.382384] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   47.382506] RDX: 0000000000000014 RSI: 00007ffd608b8c80 RDI: 0000000000000007
[   47.382627] RBP: 00007ffd608b8bb0 R08: 00007ffd608b8c40 R09: 000000000000000c
[   47.382743] R10: 0000000000000000 R11: 0000000000000202 R12: 000000002e11dda0
[   47.382858] R13: 00007ffd608b97c8 R14: 00007ffd608b8d70 R15: 0000000000543540
| [   47.383225] ------------[ cut here ]------------
| [   47.383271] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: packetdrill/160
| [   47.383329] Modules linked in:
| [   47.383423] Tainted: [W]=WARN
[   47.383443] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.383481] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.383510] 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
[   47.383622] RSP: 0018:ff6082afc037fbc8 EFLAGS: 00010286
[   47.383656] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.383701] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff32167a0306be00
[   47.383743] RBP: 0000000000000000 R08: ff32167a0321a810 R09: ff32167a04de0830
[   47.383786] R10: ff32167a04cc0118 R11: fefefefefefefeff R12: 0000000000000000
[   47.383831] R13: 0000000000000011 R14: ff32167a04cc0000 R15: ff32167a0306be00
[   47.383878] FS:  0000000000000000(0000) GS:ff32167aa9b16000(0000) knlGS:0000000000000000
[   47.383926] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.383963] CR2: 00007f6d616af680 CR3: 00000000033b6005 CR4: 0000000000771ef0
[   47.384005] PKRU: 55555554
[   47.384020] Call Trace:
[   47.384035]  <TASK>
[   47.384049]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.384083]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.384114]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.384139]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.384165]  __fput (fs/file_table.c:510)
[   47.384187]  task_work_run (kernel/task_work.c:233)
[   47.384211]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.384239]  do_group_exit (kernel/exit.c:1119)
[   47.384264]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   47.384285]  get_signal (kernel/signal.c:3037)
[   47.384309]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.384341]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.384371]  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)
[   47.384398]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.384431] RIP: 0033:0x4c2d9e
[   47.384452] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.384489] RSP: 002b:00007ffd608b8ba0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.384531] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   47.384580] RDX: 0000000000000014 RSI: 00007ffd608b8c80 RDI: 0000000000000007
[   47.384624] RBP: 00007ffd608b8bb0 R08: 00007ffd608b8c40 R09: 000000000000000c
[   47.384669] R10: 0000000000000000 R11: 0000000000000202 R12: 000000002e11dda0
[   47.384713] R13: 00007ffd608b97c8 R14: 00007ffd608b8d70 R15: 0000000000543540
| [   47.393490] ------------[ cut here ]------------
| [   47.393532] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 0/12
| [   47.393607] Modules linked in:
| [   47.393701] Tainted: [W]=WARN
[   47.393728] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.393770] Workqueue: netns cleanup_net
[   47.393797] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.393833] 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
[   47.393938] RSP: 0018:ff6082afc0067c78 EFLAGS: 00010286
[   47.393970] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.394016] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff32167a03037f00
[   47.394065] RBP: 0000000000000000 R08: ff32167a018c2f50 R09: ff32167a019c382c
[   47.394110] R10: ff32167a02f3c118 R11: fefefefefefefeff R12: 0000000000000000
[   47.394155] R13: 0000000000000011 R14: ff32167a02f3c000 R15: ff32167a03037f00
[   47.394203] FS:  0000000000000000(0000) GS:ff32167aa9a96000(0000) knlGS:0000000000000000
[   47.394251] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.394286] CR2: 000055d7cacf92b8 CR3: 0000000003323006 CR4: 0000000000771ef0
[   47.394329] PKRU: 55555554
[   47.394344] Call Trace:
[   47.394359]  <TASK>
[   47.394376]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.394413]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.394439]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.394462]  cleanup_net (net/core/net_namespace.c:702)
[   47.394486]  process_one_work (kernel/workqueue.c:3314)
[   47.394511]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.394533]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.394563]  kthread (kernel/kthread.c:436)
[   47.394588]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.394612]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.394635]  ? 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