======================================
| xx__-> [    2.497743] ------------[ cut here ]------------
| [    2.497797] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/159
| [    2.498407] Modules linked in:
| [    2.498620] Tainted: [W]=WARN
[    2.498654] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.498677] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.498698] 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
[    2.498752] RSP: 0018:ff5a835cc03f7cc8 EFLAGS: 00010286
[    2.498777] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.498802] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff26112e82f45100
[    2.498830] RBP: 0000000000000000 R08: ff26112e836417d0 R09: ff26112e8351a02c
[    2.498855] R10: ff26112e82fb5118 R11: fefefefefefefeff R12: 0000000000000000
[    2.498880] R13: 0000000000000010 R14: ff26112e82fb5000 R15: ff26112e82f45100
[    2.498914] FS:  00007fe922817740(0000) GS:ff26112f30216000(0000) knlGS:0000000000000000
[    2.498945] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.498965] CR2: 000055e7b2e7f310 CR3: 0000000003730005 CR4: 0000000000771ef0
[    2.498991] PKRU: 55555554
[    2.499000] Call Trace:
[    2.499009]  <TASK>
[    2.499019]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.499032]  register_netdevice (net/core/dev.c:11488)
[    2.499051]  register_netdev (net/core/dev.c:11552)
[    2.499064]  loopback_net_init (drivers/net/loopback.c:218)
[    2.499081]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.499098]  ops_init (net/core/net_namespace.c:137)
[    2.499115]  setup_net (net/core/net_namespace.c:446)
[    2.499129]  copy_net_ns (net/core/net_namespace.c:579)
[    2.499143]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.499163]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.499180]  ksys_unshare (kernel/fork.c:3243)
[    2.499199]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.499213]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.499228]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.499246] RIP: 0033:0x7fe922912bcb
[    2.499260] 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
[    2.499320] RSP: 002b:00007ffcb674ece8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.499351] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe922912bcb
[    2.499376] RDX: 0000000000000000 RSI: 00007ffcb674ea50 RDI: 0000000040000000
[    2.499399] RBP: 00007ffcb674f070 R08: 00007ffcb674ec40 R09: 0000000000000000
[    2.499423] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.499447] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055e7b2e82b68
| [    2.503125] ------------[ cut here ]------------
| [    2.503161] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
| [    2.503219] Modules linked in:
| [    2.503300] Tainted: [W]=WARN
[    2.503323] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.503364] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.503396] 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
[    2.503503] RSP: 0018:ff5a835cc03f7d68 EFLAGS: 00010286
[    2.503535] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.503582] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff26112e82f45100
[    2.503626] RBP: 0000000000000000 R08: ff26112e8358b750 R09: ff26112e8351f030
[    2.503671] R10: ff26112e84708118 R11: fefefefefefefeff R12: 0000000000000000
[    2.503715] R13: 0000000000000010 R14: ff26112e84708000 R15: ff26112e82f45100
[    2.503758] FS:  0000000013fd5400(0000) GS:ff26112f30216000(0000) knlGS:0000000000000000
[    2.503795] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.503834] CR2: 00007f76a5c02000 CR3: 00000000047b9006 CR4: 0000000000771ef0
[    2.503880] PKRU: 55555554
[    2.503900] Call Trace:
[    2.503917]  <TASK>
[    2.503933]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.503956]  register_netdevice (net/core/dev.c:11488)
[    2.503979]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.504000]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.504025]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.504047]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.504072]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.504104] RIP: 0033:0x47cc8d
[    2.504123] 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 
[    2.504216] RSP: 002b:00007fff66ad4770 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.504262] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.504304] RDX: 00007fff66ad47f0 RSI: 00000000400454ca RDI: 0000000000000005
[    2.504350] RBP: 00007fff66ad47c0 R08: 0000000000000000 R09: 0000000000000000
[    2.504396] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff66ad4cc8
[    2.504439] R13: 00007fff66ad4d48 R14: 0000000000000002 R15: 0000000000543540
| [    2.504545] ------------[ cut here ]------------
| [    2.504575] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
| [    2.504626] Modules linked in:
| [    2.504710] Tainted: [W]=WARN
[    2.504731] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.504767] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.504797] 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
[    2.504898] RSP: 0018:ff5a835cc03f7d60 EFLAGS: 00010286
[    2.504927] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.504969] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff26112e82f45100
[    2.505012] RBP: 0000000000000002 R08: ff26112e8358b750 R09: ff26112e8351f030
[    2.505053] R10: ff26112e84708118 R11: fefefefefefefeff R12: 0000000000000000
[    2.505094] R13: 0000000000000010 R14: ff26112e84708000 R15: ff26112e82f45100
[    2.505140] FS:  0000000013fd5400(0000) GS:ff26112f30216000(0000) knlGS:0000000000000000
[    2.505186] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.505218] CR2: 00007f76a5c02000 CR3: 00000000047b9006 CR4: 0000000000771ef0
[    2.505264] PKRU: 55555554
[    2.505278] Call Trace:
[    2.505291]  <TASK>
[    2.505306]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.505329]  notifier_call_chain (kernel/notifier.c:85)
[    2.505357]  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)
[    2.505388]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.505408]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.505433]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.505455]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.505475]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.505507] RIP: 0033:0x47cc8d
[    2.505529] 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 
[    2.505619] RSP: 002b:00007fff66ad47b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.505661] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.505702] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.505745] RBP: 00007fff66ad4800 R08: 0000000000000005 R09: 0000000000000010
[    2.505787] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff66ad4cc8
[    2.505834] R13: 00007fff66ad4d48 R14: 0000000000000002 R15: 0000000000543540
| [    2.505937] ------------[ cut here ]------------
| [    2.505964] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
| [    2.506016] Modules linked in:
| [    2.506091] Tainted: [W]=WARN
[    2.506114] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.506149] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.506182] 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
[    2.506277] RSP: 0018:ff5a835cc03f7c10 EFLAGS: 00010286
[    2.506303] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.506339] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff26112e82f45100
[    2.506386] RBP: 0000000000000000 R08: ff26112e8358b750 R09: ff26112e8351c030
[    2.506431] R10: ff26112e84708118 R11: fefefefefefefeff R12: 0000000000000000
[    2.506473] R13: 0000000000000010 R14: ff26112e84708000 R15: ff26112e82f45100
[    2.506518] FS:  0000000013fd5400(0000) GS:ff26112f30216000(0000) knlGS:0000000000000000
[    2.506560] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.506594] CR2: 00007f76a5c02000 CR3: 00000000047b9006 CR4: 0000000000771ef0
[    2.506635] PKRU: 55555554
[    2.506650] Call Trace:
[    2.506666]  <TASK>
[    2.506683]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.506704]  __dev_notify_flags (net/core/dev.c:9787)
[    2.506728]  netif_change_flags (net/core/dev.c:9820)
[    2.506750]  dev_change_flags (net/core/dev_api.c:68)
[    2.506772]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.506794]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.506818]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.506841]  sock_do_ioctl (net/socket.c:1313)
[    2.506866]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.506889]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.506910]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.506937] RIP: 0033:0x47cc8d
[    2.506958] 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 
[    2.507058] RSP: 002b:00007fff66ad4790 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.507104] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.507142] RDX: 00007fff66ad4800 RSI: 0000000000008914 RDI: 0000000000000006
[    2.507185] RBP: 00007fff66ad47e0 R08: 0000000000000005 R09: 0000000000000010
[    2.507229] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff66ad4cc8
[    2.507269] R13: 00007fff66ad4d48 R14: 0000000000000002 R15: 0000000000543540
| [   47.473989] ------------[ cut here ]------------
| [   47.474064] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
| [   47.474130] Modules linked in:
| [   47.474246] Tainted: [W]=WARN
[   47.474267] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.474308] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.474337] 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
[   47.474444] RSP: 0018:ff5a835cc03f7b58 EFLAGS: 00010286
[   47.474477] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.474522] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff26112e82f45600
[   47.474569] RBP: 0000000000000000 R08: ff26112e8358b750 R09: ff26112e8351c030
[   47.474609] R10: ff26112e84708118 R11: fefefefefefefeff R12: 0000000000000000
[   47.474654] R13: 0000000000000010 R14: ff26112e84708000 R15: ff26112e82f45600
[   47.474701] FS:  0000000000000000(0000) GS:ff26112f30216000(0000) knlGS:0000000000000000
[   47.474748] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.474777] CR2: 00007f76a5c02000 CR3: 000000002f042003 CR4: 0000000000771ef0
[   47.474826] PKRU: 55555554
[   47.474840] Call Trace:
[   47.474856]  <TASK>
[   47.474873]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.474900]  netif_close_many (net/core/dev.c:1804)
[   47.474929]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.474960]  ? __queue_work (kernel/workqueue.c:2401)
[   47.474988]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.475017]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.475046]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.475068]  __fput (fs/file_table.c:510)
[   47.475094]  task_work_run (kernel/task_work.c:233)
[   47.475117]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.475140]  do_group_exit (kernel/exit.c:1119)
[   47.475169]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   47.475191]  get_signal (kernel/signal.c:3037)
[   47.475217]  ? irqentry_exit (./include/linux/irq-entry-common.h:468 (discriminator 1) ./include/linux/irq-entry-common.h:539 (discriminator 1) kernel/entry/common.c:164 (discriminator 1))
[   47.475242]  ? sysvec_reschedule_ipi (./arch/x86/include/asm/apic.h:410 (discriminator 1) arch/x86/kernel/smp.c:251 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1))
[   47.475272]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.475306]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.475334]  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)
[   47.475360]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.475392] RIP: 0033:0x4c2d9e
[   47.475415] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.475451] RSP: 002b:00007fff66ad4120 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.475785] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   47.475830] RDX: 0000000000000014 RSI: 00007fff66ad4200 RDI: 0000000000000007
[   47.475878] RBP: 00007fff66ad4130 R08: 00007fff66ad41c0 R09: 000000000000000c
[   47.475915] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000013fe0570
[   47.475958] R13: 00007fff66ad4d48 R14: 00007fff66ad42f0 R15: 0000000000543540
| [   47.476125] ------------[ cut here ]------------
| [   47.476151] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
| [   47.476208] Modules linked in:
| [   47.476288] Tainted: [W]=WARN
[   47.476309] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.476345] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.476377] 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
[   47.476476] RSP: 0018:ff5a835cc03f7bc8 EFLAGS: 00010286
[   47.476506] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.476548] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff26112e82f45600
[   47.476593] RBP: 0000000000000000 R08: ff26112e8358b750 R09: ff26112e8352b030
[   47.476641] R10: ff26112e84708118 R11: fefefefefefefeff R12: 0000000000000000
[   47.476681] R13: 0000000000000011 R14: ff26112e84708000 R15: ff26112e82f45600
[   47.476728] FS:  0000000000000000(0000) GS:ff26112f30216000(0000) knlGS:0000000000000000
[   47.476764] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.476802] CR2: 00007f76a5c02000 CR3: 0000000004677001 CR4: 0000000000771ef0
[   47.476846] PKRU: 55555554
[   47.476862] Call Trace:
[   47.476876]  <TASK>
[   47.476892]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.476924]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.476952]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.476977]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.477003]  __fput (fs/file_table.c:510)
[   47.477028]  task_work_run (kernel/task_work.c:233)
[   47.477055]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.477075]  do_group_exit (kernel/exit.c:1119)
[   47.477101]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   47.477124]  get_signal (kernel/signal.c:3037)
[   47.477149]  ? irqentry_exit (./include/linux/irq-entry-common.h:468 (discriminator 1) ./include/linux/irq-entry-common.h:539 (discriminator 1) kernel/entry/common.c:164 (discriminator 1))
[   47.477174]  ? sysvec_reschedule_ipi (./arch/x86/include/asm/apic.h:410 (discriminator 1) arch/x86/kernel/smp.c:251 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1) arch/x86/kernel/smp.c:249 (discriminator 1))
[   47.477207]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.477238]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.477274]  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)
[   47.477298]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.477326] RIP: 0033:0x4c2d9e
[   47.477346] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.477386] RSP: 002b:00007fff66ad4120 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.477428] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   47.477472] RDX: 0000000000000014 RSI: 00007fff66ad4200 RDI: 0000000000000007
[   47.477518] RBP: 00007fff66ad4130 R08: 00007fff66ad41c0 R09: 000000000000000c
[   47.477561] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000013fe0570
[   47.477605] R13: 00007fff66ad4d48 R14: 00007fff66ad42f0 R15: 0000000000543540
| [   47.487590] ------------[ cut here ]------------
| [   47.487672] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: 1/63
| [   47.487771] Modules linked in:
| [   47.487922] Tainted: [W]=WARN
[   47.487977] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.488047] Workqueue: netns cleanup_net
[   47.488139] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.488215] 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
[   47.488355] RSP: 0018:ff5a835cc022fc78 EFLAGS: 00010286
[   47.488422] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.488513] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff26112e8341fb00
[   47.488598] RBP: 0000000000000000 R08: ff26112e836417d0 R09: ff26112e846ca02c
[   47.488680] R10: ff26112e82fb5118 R11: fefefefefefefeff R12: 0000000000000000
[   47.488762] R13: 0000000000000011 R14: ff26112e82fb5000 R15: ff26112e8341fb00
[   47.488845] FS:  0000000000000000(0000) GS:ff26112f30196000(0000) knlGS:0000000000000000
[   47.488928] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.488999] CR2: 000055d0553e72b8 CR3: 000000000452a006 CR4: 0000000000771ef0
[   47.489080] PKRU: 55555554
[   47.489129] Call Trace:
[   47.489187]  <TASK>
[   47.489237]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.489303]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.489369]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.489429]  cleanup_net (net/core/net_namespace.c:702)
[   47.489496]  process_one_work (kernel/workqueue.c:3314)
[   47.489556]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.489618]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.489677]  kthread (kernel/kthread.c:436)
[   47.489737]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.489796]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.489855]  ? 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