======================================
| xx__-> [    2.439309] ------------[ cut here ]------------
| [    2.439348] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/160
| [    2.439389] Modules linked in:
| [    2.439441] Tainted: [W]=WARN
[    2.439453] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.439478] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.439497] 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
[    2.439551] RSP: 0018:ff71be0f403ffcc8 EFLAGS: 00010286
[    2.439570] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.439593] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2449e0c18fdc00
[    2.439616] RBP: 0000000000000000 R08: ff2449e0c1daf550 R09: ff2449e0c49a302c
[    2.439641] R10: ff2449e0c317e118 R11: fefefefefefefeff R12: 0000000000000000
[    2.439662] R13: 0000000000000010 R14: ff2449e0c317e000 R15: ff2449e0c18fdc00
[    2.439692] FS:  00007f913a4f5740(0000) GS:ff2449e173096000(0000) knlGS:0000000000000000
[    2.439718] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.439738] CR2: 00007f913a5c0820 CR3: 0000000003307002 CR4: 0000000000771ef0
[    2.439760] PKRU: 55555554
[    2.439768] Call Trace:
[    2.439781]  <TASK>
[    2.439792]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.439804]  register_netdevice (net/core/dev.c:11488)
[    2.439818]  register_netdev (net/core/dev.c:11552)
[    2.439830]  loopback_net_init (drivers/net/loopback.c:218)
[    2.439846]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.439864]  ops_init (net/core/net_namespace.c:137)
[    2.439878]  setup_net (net/core/net_namespace.c:446)
[    2.439890]  copy_net_ns (net/core/net_namespace.c:579)
[    2.439904]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.439920]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.439936]  ksys_unshare (kernel/fork.c:3243)
[    2.439951]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.439965]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.439982]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.440000] RIP: 0033:0x7f913a5f0bcb
[    2.440015] 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
[    2.440066] RSP: 002b:00007ffd3b9fba18 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.440087] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f913a5f0bcb
[    2.440109] RDX: 0000000000000000 RSI: 00007ffd3b9fb780 RDI: 0000000040000000
[    2.440136] RBP: 00007ffd3b9fbda0 R08: 00007ffd3b9fb970 R09: 0000000000000000
[    2.440161] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.440181] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000562993523b68
| [    2.443259] ------------[ cut here ]------------
| [    2.443280] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
| [    2.443308] Modules linked in:
| [    2.443355] Tainted: [W]=WARN
[    2.443367] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.443385] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.443403] 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
[    2.443453] RSP: 0018:ff71be0f403ffd68 EFLAGS: 00010286
[    2.443471] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.443496] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2449e0c18fdc00
[    2.443520] RBP: 0000000000000000 R08: ff2449e0c2aeed50 R09: ff2449e0c49a0030
[    2.443545] R10: ff2449e0c4938118 R11: fefefefefefefeff R12: 0000000000000000
[    2.443570] R13: 0000000000000010 R14: ff2449e0c4938000 R15: ff2449e0c18fdc00
[    2.443592] FS:  0000000018be4400(0000) GS:ff2449e173096000(0000) knlGS:0000000000000000
[    2.443616] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.443637] CR2: 00007f5a21886000 CR3: 0000000002af7003 CR4: 0000000000771ef0
[    2.443658] PKRU: 55555554
[    2.443666] Call Trace:
[    2.443675]  <TASK>
[    2.443683]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.443697]  register_netdevice (net/core/dev.c:11488)
[    2.443710]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.443724]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.443738]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.443752]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.443767]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.443787] RIP: 0033:0x47cc8d
[    2.443800] 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 
[    2.443851] RSP: 002b:00007ffc00fa1420 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.443878] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.443901] RDX: 00007ffc00fa14a0 RSI: 00000000400454ca RDI: 0000000000000005
[    2.443922] RBP: 00007ffc00fa1470 R08: 0000000000000000 R09: 0000000000000000
[    2.443945] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc00fa1978
[    2.443969] R13: 00007ffc00fa19f8 R14: 0000000000000002 R15: 0000000000543540
| [    2.444032] ------------[ cut here ]------------
| [    2.444047] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
| [    2.444078] Modules linked in:
| [    2.444128] Tainted: [W]=WARN
[    2.444138] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.444157] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.444176] 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
[    2.444231] RSP: 0018:ff71be0f403ffd60 EFLAGS: 00010286
[    2.444250] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.444276] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2449e0c18fdc00
[    2.444301] RBP: 0000000000000002 R08: ff2449e0c2aeed50 R09: ff2449e0c49a0030
[    2.444321] R10: ff2449e0c4938118 R11: fefefefefefefeff R12: 0000000000000000
[    2.444346] R13: 0000000000000010 R14: ff2449e0c4938000 R15: ff2449e0c18fdc00
[    2.444369] FS:  0000000018be4400(0000) GS:ff2449e173096000(0000) knlGS:0000000000000000
[    2.444394] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.444414] CR2: 00007f5a21886000 CR3: 0000000002af7003 CR4: 0000000000771ef0
[    2.444439] PKRU: 55555554
[    2.444447] Call Trace:
[    2.444454]  <TASK>
[    2.444464]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.444480]  notifier_call_chain (kernel/notifier.c:85)
[    2.444495]  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)
[    2.444513]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.444525]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.444538]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.444551]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.444563]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.444579] RIP: 0033:0x47cc8d
[    2.444591] 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 
[    2.444645] RSP: 002b:00007ffc00fa1460 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.444669] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.444692] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.444717] RBP: 00007ffc00fa14b0 R08: 0000000000000000 R09: 0000000000000000
[    2.444739] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc00fa1978
[    2.444762] R13: 00007ffc00fa19f8 R14: 0000000000000002 R15: 0000000000543540
| [    2.444826] ------------[ cut here ]------------
| [    2.444844] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
| [    2.444870] Modules linked in:
| [    2.444916] Tainted: [W]=WARN
[    2.444930] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.444947] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.444964] 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
[    2.445014] RSP: 0018:ff71be0f403ffc10 EFLAGS: 00010286
[    2.445031] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.445052] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2449e0c18fdc00
[    2.445077] RBP: 0000000000000000 R08: ff2449e0c2aeed50 R09: ff2449e0c49a5030
[    2.445096] R10: ff2449e0c4938118 R11: fefefefefefefeff R12: 0000000000000000
[    2.445123] R13: 0000000000000010 R14: ff2449e0c4938000 R15: ff2449e0c18fdc00
[    2.445150] FS:  0000000018be4400(0000) GS:ff2449e173096000(0000) knlGS:0000000000000000
[    2.445177] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.445195] CR2: 00007f5a21886000 CR3: 0000000002af7003 CR4: 0000000000771ef0
[    2.445223] PKRU: 55555554
[    2.445231] Call Trace:
[    2.445240]  <TASK>
[    2.445248]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.445262]  __dev_notify_flags (net/core/dev.c:9787)
[    2.445276]  netif_change_flags (net/core/dev.c:9820)
[    2.445288]  dev_change_flags (net/core/dev_api.c:68)
[    2.445298]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.445316]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.445330]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.445341]  sock_do_ioctl (net/socket.c:1313)
[    2.445356]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.445367]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.445379]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.445396] RIP: 0033:0x47cc8d
[    2.445409] 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 
[    2.445457] RSP: 002b:00007ffc00fa1440 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.445482] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.445503] RDX: 00007ffc00fa14b0 RSI: 0000000000008914 RDI: 0000000000000006
[    2.445526] RBP: 00007ffc00fa1490 R08: 0000000000000000 R09: 0000000000000000
[    2.445547] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc00fa1978
[    2.445567] R13: 00007ffc00fa19f8 R14: 0000000000000002 R15: 0000000000543540
| [   47.416480] ------------[ cut here ]------------
| [   47.416562] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
| [   47.416634] Modules linked in:
| [   47.416709] Tainted: [W]=WARN
[   47.416724] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.416747] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.416772] 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
[   47.416831] RSP: 0018:ff71be0f403ffb58 EFLAGS: 00010286
[   47.416853] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.416879] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2449e0c3164600
[   47.416904] RBP: 0000000000000000 R08: ff2449e0c2aeed50 R09: ff2449e0c49a5030
[   47.416928] R10: ff2449e0c4938118 R11: fefefefefefefeff R12: 0000000000000000
[   47.416952] R13: 0000000000000010 R14: ff2449e0c4938000 R15: ff2449e0c3164600
[   47.416983] FS:  0000000000000000(0000) GS:ff2449e173096000(0000) knlGS:0000000000000000
[   47.417009] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.417032] CR2: 00007f5a21886000 CR3: 000000003b042004 CR4: 0000000000771ef0
[   47.417056] PKRU: 55555554
[   47.417064] Call Trace:
[   47.417077]  <TASK>
[   47.417087]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.417102]  netif_close_many (net/core/dev.c:1804)
[   47.417117]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.417134]  ? __queue_work (kernel/workqueue.c:2401)
[   47.417150]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.417166]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.417180]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.417195]  __fput (fs/file_table.c:510)
[   47.417212]  task_work_run (kernel/task_work.c:233)
[   47.417226]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.417244]  ? __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)
[   47.417258]  do_group_exit (kernel/exit.c:1119)
[   47.417271]  get_signal (kernel/signal.c:3037)
[   47.417285]  ? fsnotify_grab_connector (./include/linux/srcu.h:487 fs/notify/mark.c:854)
[   47.417303]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.417325]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3000 kernel/rcu/tree.c:3012 kernel/rcu/tree.c:3155)
[   47.417342]  ? __fput (./include/linux/percpu_counter.h:71 ./include/linux/percpu_counter.h:272 fs/file_table.c:99 fs/file_table.c:523)
[   47.417358]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.417377]  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)
[   47.417393]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.417413] RIP: 0033:0x47fb83
[   47.417427] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[   47.417451] RSP: 002b:00007ffc00fa0f10 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   47.417519] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   47.417603] RDX: 000000000000000e RSI: d12d4f202ebc71d9 RDI: 0000000000000007
[   47.417666] RBP: 00007ffc00fa1410 R08: 0000000000000041 R09: 0000000018be53e0
[   47.417693] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   47.417713] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [   47.417841] ------------[ cut here ]------------
| [   47.417862] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
| [   47.417891] Modules linked in:
| [   47.417945] Tainted: [W]=WARN
[   47.417959] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.417979] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.417995] 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
[   47.418045] RSP: 0018:ff71be0f403ffbc8 EFLAGS: 00010286
[   47.418064] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.418125] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2449e0c3164600
[   47.418148] RBP: 0000000000000000 R08: ff2449e0c2aeed50 R09: ff2449e0c49ac830
[   47.418198] R10: ff2449e0c4938118 R11: fefefefefefefeff R12: 0000000000000000
[   47.418279] R13: 0000000000000011 R14: ff2449e0c4938000 R15: ff2449e0c3164600
[   47.418308] FS:  0000000000000000(0000) GS:ff2449e173096000(0000) knlGS:0000000000000000
[   47.418338] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.418358] CR2: 00007f5a21886000 CR3: 000000003b042004 CR4: 0000000000771ef0
[   47.418383] PKRU: 55555554
[   47.418391] Call Trace:
[   47.418399]  <TASK>
[   47.418410]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.418428]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.418443]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.418500]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.418518]  __fput (fs/file_table.c:510)
[   47.418570]  task_work_run (kernel/task_work.c:233)
[   47.418582]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.418604]  ? __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)
[   47.418623]  do_group_exit (kernel/exit.c:1119)
[   47.418639]  get_signal (kernel/signal.c:3037)
[   47.418652]  ? fsnotify_grab_connector (./include/linux/srcu.h:487 fs/notify/mark.c:854)
[   47.418667]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.418687]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3000 kernel/rcu/tree.c:3012 kernel/rcu/tree.c:3155)
[   47.418702]  ? __fput (./include/linux/percpu_counter.h:71 ./include/linux/percpu_counter.h:272 fs/file_table.c:99 fs/file_table.c:523)
[   47.418714]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.418731]  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)
[   47.418743]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.418761] RIP: 0033:0x47fb83
[   47.418773] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[   47.418790] RSP: 002b:00007ffc00fa0f10 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   47.418811] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   47.418836] RDX: 000000000000000e RSI: d12d4f202ebc71d9 RDI: 0000000000000007
[   47.418857] RBP: 00007ffc00fa1410 R08: 0000000000000041 R09: 0000000018be53e0
[   47.418884] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   47.418913] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [   47.428706] ------------[ cut here ]------------
| [   47.428753] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: 1/64
| [   47.428793] Modules linked in:
| [   47.428845] Tainted: [W]=WARN
[   47.428857] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.428878] Workqueue: netns cleanup_net
[   47.428896] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.428956] 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
[   47.429017] RSP: 0018:ff71be0f40237c78 EFLAGS: 00010286
[   47.429077] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.429115] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2449e0c18ff100
[   47.429171] RBP: 0000000000000000 R08: ff2449e0c1daf550 R09: ff2449e0c19bf82c
[   47.429214] R10: ff2449e0c317e118 R11: fefefefefefefeff R12: 0000000000000000
[   47.429290] R13: 0000000000000011 R14: ff2449e0c317e000 R15: ff2449e0c18ff100
[   47.429336] FS:  0000000000000000(0000) GS:ff2449e173216000(0000) knlGS:0000000000000000
[   47.429379] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.429405] CR2: 00005598dd2902b8 CR3: 0000000003039002 CR4: 0000000000771ef0
[   47.429431] PKRU: 55555554
[   47.429439] Call Trace:
[   47.429454]  <TASK>
[   47.429496]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.429520]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.429562]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.429579]  cleanup_net (net/core/net_namespace.c:702)
[   47.429593]  process_one_work (kernel/workqueue.c:3314)
[   47.429614]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.429627]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.429643]  kthread (kernel/kthread.c:436)
[   47.429658]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.429675]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.429688]  ? 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