======================================
| xx__-> [    2.671890] ------------[ cut here ]------------
| [    2.671941] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/158
| [    2.672004] Modules linked in:
| [    2.672087] Tainted: [W]=WARN
[    2.672106] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.672147] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.672178] 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
[    2.672275] RSP: 0018:ff7119e7403d7cc8 EFLAGS: 00010286
[    2.672306] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.672355] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4a1b4ec2902e00
[    2.672390] RBP: 0000000000000000 R08: ff4a1b4ec36952d0 R09: ff4a1b4ec603a02c
[    2.672435] R10: ff4a1b4ec2f2d118 R11: fefefefefefefeff R12: 0000000000000000
[    2.672477] R13: 0000000000000010 R14: ff4a1b4ec2f2d000 R15: ff4a1b4ec2902e00
[    2.672523] FS:  00007f5aae320740(0000) GS:ff4a1b4f61816000(0000) knlGS:0000000000000000
[    2.672571] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.672646] CR2: 000055e69879c310 CR3: 0000000004903003 CR4: 0000000000771ef0
[    2.672719] PKRU: 55555554
[    2.672734] Call Trace:
[    2.672752]  <TASK>
[    2.672770]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.672794]  register_netdevice (net/core/dev.c:11488)
[    2.672820]  register_netdev (net/core/dev.c:11552)
[    2.672843]  loopback_net_init (drivers/net/loopback.c:218)
[    2.672869]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.672903]  ops_init (net/core/net_namespace.c:137)
[    2.672927]  setup_net (net/core/net_namespace.c:446)
[    2.672951]  copy_net_ns (net/core/net_namespace.c:579)
[    2.672973]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.673007]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.673035]  ksys_unshare (kernel/fork.c:3243)
[    2.673062]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.673085]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.673113]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.673144] RIP: 0033:0x7f5aae41bbcb
[    2.673166] 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
[    2.673281] RSP: 002b:00007fffaa18e148 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.673324] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5aae41bbcb
[    2.673370] RDX: 0000000000000000 RSI: 00007fffaa18deb0 RDI: 0000000040000000
[    2.673408] RBP: 00007fffaa18e4d0 R08: 00007fffaa18e0a0 R09: 0000000000000000
[    2.673459] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.673502] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055e69879fb68
| [    2.676907] ------------[ cut here ]------------
| [    2.676941] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/158
| [    2.677004] Modules linked in:
| [    2.677085] Tainted: [W]=WARN
[    2.677108] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.677146] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.677177] 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
[    2.677273] RSP: 0018:ff7119e7403d7d68 EFLAGS: 00010286
[    2.677304] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.677354] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4a1b4ec2902e00
[    2.677395] RBP: 0000000000000000 R08: ff4a1b4ec2936310 R09: ff4a1b4ec603f030
[    2.677437] R10: ff4a1b4ec4b50118 R11: fefefefefefefeff R12: 0000000000000000
[    2.677481] R13: 0000000000000010 R14: ff4a1b4ec4b50000 R15: ff4a1b4ec2902e00
[    2.677526] FS:  000000000a470400(0000) GS:ff4a1b4f61816000(0000) knlGS:0000000000000000
[    2.677571] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.677607] CR2: 00007ff1467b9000 CR3: 0000000004994004 CR4: 0000000000771ef0
[    2.677657] PKRU: 55555554
[    2.677672] Call Trace:
[    2.677689]  <TASK>
[    2.677710]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.677767]  register_netdevice (net/core/dev.c:11488)
[    2.677791]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.677816]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.677837]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.677863]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.677889]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.677922] RIP: 0033:0x47cc8d
[    2.677948] 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 
[    2.678051] RSP: 002b:00007fff9813fa70 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.678090] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.678144] RDX: 00007fff9813faf0 RSI: 00000000400454ca RDI: 0000000000000005
[    2.678215] RBP: 00007fff9813fac0 R08: 0000000000000000 R09: 0000000000000000
[    2.678262] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff9813ffc8
[    2.678315] R13: 00007fff98140048 R14: 0000000000000002 R15: 0000000000543540
| [    2.678441] ------------[ cut here ]------------
| [    2.678469] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/158
| [    2.678519] Modules linked in:
| [    2.678601] Tainted: [W]=WARN
[    2.678625] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.678666] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.678695] 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
[    2.678810] RSP: 0018:ff7119e7403d7d60 EFLAGS: 00010286
[    2.678861] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.678904] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4a1b4ec2902e00
[    2.678949] RBP: 0000000000000002 R08: ff4a1b4ec2936310 R09: ff4a1b4ec603f030
[    2.679021] R10: ff4a1b4ec4b50118 R11: fefefefefefefeff R12: 0000000000000000
[    2.679060] R13: 0000000000000010 R14: ff4a1b4ec4b50000 R15: ff4a1b4ec2902e00
[    2.679103] FS:  000000000a470400(0000) GS:ff4a1b4f61816000(0000) knlGS:0000000000000000
[    2.679167] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.679197] CR2: 00007ff1467b9000 CR3: 0000000004994004 CR4: 0000000000771ef0
[    2.679246] PKRU: 55555554
[    2.679260] Call Trace:
[    2.679274]  <TASK>
[    2.679287]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.679325]  notifier_call_chain (kernel/notifier.c:85)
[    2.679356]  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)
[    2.679390]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.679410]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.679436]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.679460]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.679493]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.679519] RIP: 0033:0x47cc8d
[    2.679547] 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 
[    2.679649] RSP: 002b:00007fff9813fab0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.679687] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.679734] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.679778] RBP: 00007fff9813fb00 R08: 0000000000000000 R09: 0000000000000000
[    2.679828] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff9813ffc8
[    2.679877] R13: 00007fff98140048 R14: 0000000000000002 R15: 0000000000543540
| [    2.679977] ------------[ cut here ]------------
| [    2.680005] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/158
| [    2.680067] Modules linked in:
| [    2.680141] Tainted: [W]=WARN
[    2.680157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.680205] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.680238] 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
[    2.680346] RSP: 0018:ff7119e7403d7c10 EFLAGS: 00010286
[    2.680375] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.680418] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4a1b4ec2902e00
[    2.680460] RBP: 0000000000000000 R08: ff4a1b4ec2936310 R09: ff4a1b4ec603c030
[    2.680504] R10: ff4a1b4ec4b50118 R11: fefefefefefefeff R12: 0000000000000000
[    2.680549] R13: 0000000000000010 R14: ff4a1b4ec4b50000 R15: ff4a1b4ec2902e00
[    2.680595] FS:  000000000a470400(0000) GS:ff4a1b4f61816000(0000) knlGS:0000000000000000
[    2.680640] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.680676] CR2: 00007ff1467b9000 CR3: 0000000004994004 CR4: 0000000000771ef0
[    2.680714] PKRU: 55555554
[    2.680738] Call Trace:
[    2.680753]  <TASK>
[    2.680784]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.680813]  __dev_notify_flags (net/core/dev.c:9787)
[    2.680838]  netif_change_flags (net/core/dev.c:9820)
[    2.680864]  dev_change_flags (net/core/dev_api.c:68)
[    2.680888]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.680914]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.680937]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.680962]  sock_do_ioctl (net/socket.c:1313)
[    2.680991]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.681013]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.681035]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.681066] RIP: 0033:0x47cc8d
[    2.681084] 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 
[    2.681197] RSP: 002b:00007fff9813fa90 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.681261] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.681305] RDX: 00007fff9813fb00 RSI: 0000000000008914 RDI: 0000000000000006
[    2.681354] RBP: 00007fff9813fae0 R08: 0000000000000000 R09: 0000000000000000
[    2.681406] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff9813ffc8
[    2.681448] R13: 00007fff98140048 R14: 0000000000000002 R15: 0000000000543540
| [   47.654535] ------------[ cut here ]------------
| [   47.654602] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/158
| [   47.654667] Modules linked in:
| [   47.654762] Tainted: [W]=WARN
[   47.654786] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.654823] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.654854] 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
[   47.654957] RSP: 0018:ff7119e7403d7b58 EFLAGS: 00010286
[   47.654990] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.655035] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4a1b4ec1d79900
[   47.655083] RBP: 0000000000000000 R08: ff4a1b4ec2936310 R09: ff4a1b4ec4a4b030
[   47.655125] R10: ff4a1b4ec4b50118 R11: fefefefefefefeff R12: 0000000000000000
[   47.655168] R13: 0000000000000010 R14: ff4a1b4ec4b50000 R15: ff4a1b4ec1d79900
[   47.655216] FS:  0000000000000000(0000) GS:ff4a1b4f61816000(0000) knlGS:0000000000000000
[   47.655264] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.655304] CR2: 00007ff1467b9000 CR3: 000000002aa42001 CR4: 0000000000771ef0
[   47.655661] PKRU: 55555554
[   47.655677] Call Trace:
[   47.655694]  <TASK>
[   47.655712]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.655736]  netif_close_many (net/core/dev.c:1804)
[   47.655762]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.655791]  ? __queue_work (kernel/workqueue.c:2401)
[   47.655818]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.655848]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.655876]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.655898]  __fput (fs/file_table.c:510)
[   47.655925]  task_work_run (kernel/task_work.c:233)
[   47.655950]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.655976]  do_group_exit (kernel/exit.c:1119)
[   47.655999]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   47.656020]  get_signal (kernel/signal.c:3037)
[   47.656045]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.656077]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.656110]  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)
[   47.656136]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.656169] RIP: 0033:0x4c2d9e
[   47.656191] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.656229] RSP: 002b:00007fff9813f420 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.656274] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   47.656317] RDX: 0000000000000014 RSI: 00007fff9813f500 RDI: 0000000000000007
[   47.656362] RBP: 00007fff9813f430 R08: 00007fff9813f4c0 R09: 000000000000000c
[   47.656398] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff9813ffc8
[   47.656439] R13: 00007fff98140048 R14: 00007fff9813f5f0 R15: 0000000000543540
| [   47.656604] ------------[ cut here ]------------
| [   47.656658] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/158
| [   47.656712] Modules linked in:
| [   47.656799] Tainted: [W]=WARN
[   47.656820] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.656856] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.656885] 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
[   47.656989] RSP: 0018:ff7119e7403d7bc8 EFLAGS: 00010286
[   47.657017] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.657059] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4a1b4ec1d79900
[   47.657111] RBP: 0000000000000000 R08: ff4a1b4ec2936310 R09: ff4a1b4ec6032830
[   47.657164] R10: ff4a1b4ec4b50118 R11: fefefefefefefeff R12: 0000000000000000
[   47.657209] R13: 0000000000000011 R14: ff4a1b4ec4b50000 R15: ff4a1b4ec1d79900
[   47.657259] FS:  0000000000000000(0000) GS:ff4a1b4f61816000(0000) knlGS:0000000000000000
[   47.657304] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.657346] CR2: 00007ff1467b9000 CR3: 000000002aa42001 CR4: 0000000000771ef0
[   47.657392] PKRU: 55555554
[   47.657405] Call Trace:
[   47.657419]  <TASK>
[   47.657434]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.657464]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.657487]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.657509]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.657529]  __fput (fs/file_table.c:510)
[   47.657555]  task_work_run (kernel/task_work.c:233)
[   47.657578]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.657602]  do_group_exit (kernel/exit.c:1119)
[   47.657624]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   47.657646]  get_signal (kernel/signal.c:3037)
[   47.657671]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.657699]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.657730]  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)
[   47.657755]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.657784] RIP: 0033:0x4c2d9e
[   47.657806] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.657844] RSP: 002b:00007fff9813f420 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.657879] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   47.657924] RDX: 0000000000000014 RSI: 00007fff9813f500 RDI: 0000000000000007
[   47.657973] RBP: 00007fff9813f430 R08: 00007fff9813f4c0 R09: 000000000000000c
[   47.658019] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff9813ffc8
[   47.658057] R13: 00007fff98140048 R14: 00007fff9813f5f0 R15: 0000000000543540
| [   47.664441] ------------[ cut here ]------------
| [   47.664488] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 0/12
| [   47.664555] Modules linked in:
| [   47.664642] Tainted: [W]=WARN
[   47.664663] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.664700] Workqueue: netns cleanup_net
[   47.664726] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.664757] 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
[   47.664851] RSP: 0018:ff7119e740067c78 EFLAGS: 00010286
[   47.664880] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.664924] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4a1b4ec1d79800
[   47.664966] RBP: 0000000000000000 R08: ff4a1b4ec36952d0 R09: ff4a1b4ec603582c
[   47.665009] R10: ff4a1b4ec2f2d118 R11: fefefefefefefeff R12: 0000000000000000
[   47.665055] R13: 0000000000000011 R14: ff4a1b4ec2f2d000 R15: ff4a1b4ec1d79800
[   47.665107] FS:  0000000000000000(0000) GS:ff4a1b4f61696000(0000) knlGS:0000000000000000
[   47.665153] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.665191] CR2: 00007f381b587f98 CR3: 000000000193e004 CR4: 0000000000771ef0
[   47.665239] PKRU: 55555554
[   47.665252] Call Trace:
[   47.665267]  <TASK>
[   47.665283]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.665309]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.665349]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.665373]  cleanup_net (net/core/net_namespace.c:702)
[   47.665396]  process_one_work (kernel/workqueue.c:3314)
[   47.665418]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.665440]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.665464]  kthread (kernel/kthread.c:436)
[   47.665489]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.665513]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.665538]  ? 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