======================================
| xx__-> [    2.266231] ------------[ cut here ]------------
| [    2.266267] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: unshare/160
| [    2.266373] Modules linked in:
| [    2.266495] Tainted: [W]=WARN
[    2.266545] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.266606] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.266659] 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
[    2.266748] RSP: 0018:ff75203440283cc8 EFLAGS: 00010286
[    2.266801] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.266862] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff42986903115300
[    2.266921] RBP: 0000000000000000 R08: ff429869030f2850 R09: ff429869032d202c
[    2.266981] R10: ff429869019b5118 R11: fefefefefefefeff R12: 0000000000000000
[    2.267048] R13: 0000000000000010 R14: ff429869019b5000 R15: ff42986903115300
[    2.267123] FS:  00007f503c6b0740(0000) GS:ff429869bbd96000(0000) knlGS:0000000000000000
[    2.267186] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.267241] CR2: 0000564699b55310 CR3: 0000000004841006 CR4: 0000000000771ef0
[    2.267339] PKRU: 55555554
[    2.267385] Call Trace:
[    2.267435]  <TASK>
[    2.267486]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.267540]  register_netdevice (net/core/dev.c:11488)
[    2.267621]  register_netdev (net/core/dev.c:11552)
[    2.267673]  loopback_net_init (drivers/net/loopback.c:218)
[    2.267727]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.267785]  ops_init (net/core/net_namespace.c:137)
[    2.267871]  setup_net (net/core/net_namespace.c:446)
[    2.267951]  copy_net_ns (net/core/net_namespace.c:579)
[    2.268012]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.268068]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.268162]  ksys_unshare (kernel/fork.c:3243)
[    2.268215]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.268265]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.268317]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.268371] RIP: 0033:0x7f503c7abbcb
[    2.268424] 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
[    2.268510] RSP: 002b:00007ffd51219fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.268583] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f503c7abbcb
[    2.268643] RDX: 0000000000000000 RSI: 00007ffd51219d50 RDI: 0000000040000000
[    2.268702] RBP: 00007ffd5121a370 R08: 00007ffd51219f40 R09: 0000000000000000
[    2.268760] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.268819] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000564699b58b68
| [    2.272957] ------------[ cut here ]------------
| [    2.272989] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/160
| [    2.273031] Modules linked in:
| [    2.273094] Tainted: [W]=WARN
[    2.273111] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.273137] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.273155] 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
[    2.273221] RSP: 0018:ff75203440283d68 EFLAGS: 00010286
[    2.273238] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.273265] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4298690182ca00
[    2.273290] RBP: 0000000000000000 R08: ff4298690327d150 R09: ff42986901e78030
[    2.273314] R10: ff4298690487c118 R11: fefefefefefefeff R12: 0000000000000000
[    2.273345] R13: 0000000000000010 R14: ff4298690487c000 R15: ff4298690182ca00
[    2.273376] FS:  0000000006177400(0000) GS:ff429869bbe16000(0000) knlGS:0000000000000000
[    2.273409] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.273432] CR2: 00007f6251efc000 CR3: 00000000048fb003 CR4: 0000000000771ef0
[    2.273456] PKRU: 55555554
[    2.273464] Call Trace:
[    2.273473]  <TASK>
[    2.273483]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.273501]  register_netdevice (net/core/dev.c:11488)
[    2.273514]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.273530]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.273544]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.273563]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.273584]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.273604] RIP: 0033:0x47cc8d
[    2.273617] 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 
[    2.273673] RSP: 002b:00007ffd5eb2c480 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.273703] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.273729] RDX: 00007ffd5eb2c500 RSI: 00000000400454ca RDI: 0000000000000005
[    2.273756] RBP: 00007ffd5eb2c4d0 R08: 0000000000000000 R09: 0000000000000000
[    2.273783] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd5eb2c9d8
[    2.273807] R13: 00007ffd5eb2ca58 R14: 0000000000000002 R15: 0000000000543540
| [    2.273875] ------------[ cut here ]------------
| [    2.273895] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/160
| [    2.273928] Modules linked in:
| [    2.273974] Tainted: [W]=WARN
[    2.273987] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.274014] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.274031] 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
[    2.274099] RSP: 0018:ff75203440283d60 EFLAGS: 00010286
[    2.274117] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.274149] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4298690182ca00
[    2.274183] RBP: 0000000000000002 R08: ff4298690327d150 R09: ff42986901e78030
[    2.274208] R10: ff4298690487c118 R11: fefefefefefefeff R12: 0000000000000000
[    2.274234] R13: 0000000000000010 R14: ff4298690487c000 R15: ff4298690182ca00
[    2.274265] FS:  0000000006177400(0000) GS:ff429869bbe16000(0000) knlGS:0000000000000000
[    2.274291] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.274312] CR2: 00007f6251efc000 CR3: 00000000048fb003 CR4: 0000000000771ef0
[    2.274339] PKRU: 55555554
[    2.274349] Call Trace:
[    2.274358]  <TASK>
[    2.274367]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.274381]  notifier_call_chain (kernel/notifier.c:85)
[    2.274395]  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)
[    2.274414]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.274427]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.274441]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.274456]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.274469]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.274487] RIP: 0033:0x47cc8d
[    2.274500] 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 
[    2.274554] RSP: 002b:00007ffd5eb2c4c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.274578] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.274610] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.274636] RBP: 00007ffd5eb2c510 R08: 0000000000000004 R09: 00007ffd5eb2c490
[    2.274660] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffd5eb2c9d8
[    2.274683] R13: 00007ffd5eb2ca58 R14: 0000000000000002 R15: 0000000000543540
| [    2.274757] ------------[ cut here ]------------
| [    2.274779] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/160
| [    2.274810] Modules linked in:
| [    2.274865] Tainted: [W]=WARN
[    2.274879] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.274903] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.274923] 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
[    2.274985] RSP: 0018:ff75203440283c10 EFLAGS: 00010286
[    2.275012] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.275035] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4298690182ca00
[    2.275061] RBP: 0000000000000000 R08: ff4298690327d150 R09: ff429869032d5030
[    2.275084] R10: ff4298690487c118 R11: fefefefefefefeff R12: 0000000000000000
[    2.275110] R13: 0000000000000010 R14: ff4298690487c000 R15: ff4298690182ca00
[    2.275137] FS:  0000000006177400(0000) GS:ff429869bbe16000(0000) knlGS:0000000000000000
[    2.275164] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.275184] CR2: 00007f6251efc000 CR3: 00000000048fb003 CR4: 0000000000771ef0
[    2.275211] PKRU: 55555554
[    2.275219] Call Trace:
[    2.275227]  <TASK>
[    2.275237]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.275250]  __dev_notify_flags (net/core/dev.c:9787)
[    2.275263]  netif_change_flags (net/core/dev.c:9820)
[    2.275277]  dev_change_flags (net/core/dev_api.c:68)
[    2.275289]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.275304]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.275318]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.275331]  sock_do_ioctl (net/socket.c:1313)
[    2.275348]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.275362]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.275376]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.275393] RIP: 0033:0x47cc8d
[    2.275406] 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 
[    2.275461] RSP: 002b:00007ffd5eb2c4a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.275485] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.275508] RDX: 00007ffd5eb2c510 RSI: 0000000000008914 RDI: 0000000000000006
[    2.275531] RBP: 00007ffd5eb2c4f0 R08: 0000000000000004 R09: 00007ffd5eb2c510
[    2.275561] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffd5eb2c9d8
[    2.275587] R13: 00007ffd5eb2ca58 R14: 0000000000000002 R15: 0000000000543540
| [   47.247427] ------------[ cut here ]------------
| [   47.247485] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/160
| [   47.247519] Modules linked in:
| [   47.247573] Tainted: [W]=WARN
[   47.247585] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.247606] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.247625] 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
[   47.247672] RSP: 0018:ff75203440283b58 EFLAGS: 00010286
[   47.247689] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.247720] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff42986903115000
[   47.247743] RBP: 0000000000000000 R08: ff4298690327d150 R09: ff429869032d5030
[   47.247767] R10: ff4298690487c118 R11: fefefefefefefeff R12: 0000000000000000
[   47.247787] R13: 0000000000000010 R14: ff4298690487c000 R15: ff42986903115000
[   47.247812] FS:  0000000000000000(0000) GS:ff429869bbe16000(0000) knlGS:0000000000000000
[   47.247836] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.247855] CR2: 00007f6251efc000 CR3: 000000001d042004 CR4: 0000000000771ef0
[   47.247880] PKRU: 55555554
[   47.247888] Call Trace:
[   47.247897]  <TASK>
[   47.247909]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.247921]  netif_close_many (net/core/dev.c:1804)
[   47.247936]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.247951]  ? __queue_work (kernel/workqueue.c:2401)
[   47.247967]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.247981]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.247999]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.248010]  __fput (fs/file_table.c:510)
[   47.248028]  task_work_run (kernel/task_work.c:233)
[   47.248042]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.248058]  ? netlink_recvmsg (net/netlink/af_netlink.c:1973)
[   47.248070]  do_group_exit (kernel/exit.c:1119)
[   47.248082]  get_signal (kernel/signal.c:3037)
[   47.248098]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.248122]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.248143]  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)
[   47.248157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.248173] RIP: 0033:0x4c2d9e
[   47.248186] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.248204] RSP: 002b:00007ffd5eb2be30 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[   47.248225] RAX: 0000000000000014 RBX: 00007ffd5eb2bec0 RCX: 00000000004c2d9e
[   47.248246] RDX: 0000000000000000 RSI: 00007ffd5eb2bed0 RDI: 0000000000000007
[   47.248269] RBP: 00007ffd5eb2be40 R08: 0000000000000000 R09: 0000000000000000
[   47.248288] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd5eb2beb4
[   47.248307] R13: 0000000000000050 R14: 00007ffd5eb2c000 R15: 0000000000000000
| [   47.248418] ------------[ cut here ]------------
| [   47.248432] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/160
| [   47.248460] Modules linked in:
| [   47.248507] Tainted: [W]=WARN
[   47.248519] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.248538] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.248557] 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
[   47.248604] RSP: 0018:ff75203440283bc8 EFLAGS: 00010286
[   47.248622] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.248642] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff42986903115000
[   47.248662] RBP: 0000000000000000 R08: ff4298690327d150 R09: ff429869030e8830
[   47.248681] R10: ff4298690487c118 R11: fefefefefefefeff R12: 0000000000000000
[   47.248704] R13: 0000000000000011 R14: ff4298690487c000 R15: ff42986903115000
[   47.248732] FS:  0000000000000000(0000) GS:ff429869bbe16000(0000) knlGS:0000000000000000
[   47.248756] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.248775] CR2: 00007f6251efc000 CR3: 000000001d042004 CR4: 0000000000771ef0
[   47.248799] PKRU: 55555554
[   47.248807] Call Trace:
[   47.248816]  <TASK>
[   47.248826]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.248840]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.248856]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.248868]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.248879]  __fput (fs/file_table.c:510)
[   47.248890]  task_work_run (kernel/task_work.c:233)
[   47.248903]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.248915]  ? netlink_recvmsg (net/netlink/af_netlink.c:1973)
[   47.248926]  do_group_exit (kernel/exit.c:1119)
[   47.248938]  get_signal (kernel/signal.c:3037)
[   47.248950]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.248965]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.248982]  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)
[   47.248994]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.249007] RIP: 0033:0x4c2d9e
[   47.249020] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.249036] RSP: 002b:00007ffd5eb2be30 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[   47.249058] RAX: 0000000000000014 RBX: 00007ffd5eb2bec0 RCX: 00000000004c2d9e
[   47.249080] RDX: 0000000000000000 RSI: 00007ffd5eb2bed0 RDI: 0000000000000007
[   47.249918] RBP: 00007ffd5eb2be40 R08: 0000000000000000 R09: 0000000000000000
[   47.249947] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd5eb2beb4
[   47.249967] R13: 0000000000000050 R14: 00007ffd5eb2c000 R15: 0000000000000000
| [   47.261221] ------------[ cut here ]------------
| [   47.261249] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 0/12
| [   47.261289] Modules linked in:
| [   47.261344] Tainted: [W]=WARN
[   47.261356] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.261377] Workqueue: netns cleanup_net
[   47.261393] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.261411] 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
[   47.261465] RSP: 0018:ff75203440067c78 EFLAGS: 00010286
[   47.261482] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.261508] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4298690182a900
[   47.261532] RBP: 0000000000000000 R08: ff429869030f2850 R09: ff429869032cb82c
[   47.261554] R10: ff429869019b5118 R11: fefefefefefefeff R12: 0000000000000000
[   47.261575] R13: 0000000000000011 R14: ff429869019b5000 R15: ff4298690182a900
[   47.261603] FS:  0000000000000000(0000) GS:ff429869bbc96000(0000) knlGS:0000000000000000
[   47.261629] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.261650] CR2: 00007f155b99bf98 CR3: 000000001d042006 CR4: 0000000000771ef0
[   47.261675] PKRU: 55555554
[   47.261685] Call Trace:
[   47.261694]  <TASK>
[   47.261706]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.261727]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.261744]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.261758]  cleanup_net (net/core/net_namespace.c:702)
[   47.261773]  process_one_work (kernel/workqueue.c:3314)
[   47.261790]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.261804]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.261817]  kthread (kernel/kthread.c:436)
[   47.261831]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.261843]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.261857]  ? 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