======================================
| xx__-> [    2.424021] ------------[ cut here ]------------
| [    2.424094] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/157
| [    2.424159] Modules linked in:
| [    2.424262] Tainted: [W]=WARN
[    2.424287] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.424329] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.424362] 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
[    2.424480] RSP: 0018:ff7c3f6280387cc8 EFLAGS: 00010286
[    2.424512] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.424563] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff426025c317ae00
[    2.424615] RBP: 0000000000000000 R08: ff426025c193dcd0 R09: ff426025c496302c
[    2.424663] R10: ff426025c304e118 R11: fefefefefefefeff R12: 0000000000000000
[    2.424711] R13: 0000000000000010 R14: ff426025c304e000 R15: ff426025c317ae00
[    2.424760] FS:  00007f9cdf89a740(0000) GS:ff42602661e96000(0000) knlGS:0000000000000000
[    2.424804] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.424842] CR2: 000055bb73abc310 CR3: 0000000004a4b002 CR4: 0000000000771ef0
[    2.424887] PKRU: 55555554
[    2.424903] Call Trace:
[    2.424920]  <TASK>
[    2.424940]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.424966]  register_netdevice (net/core/dev.c:11488)
[    2.424989]  register_netdev (net/core/dev.c:11552)
[    2.425013]  loopback_net_init (drivers/net/loopback.c:218)
[    2.425038]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.425072]  ops_init (net/core/net_namespace.c:137)
[    2.425097]  setup_net (net/core/net_namespace.c:446)
[    2.425123]  copy_net_ns (net/core/net_namespace.c:579)
[    2.425146]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.425181]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.425212]  ksys_unshare (kernel/fork.c:3243)
[    2.425241]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.425266]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.425295]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.425329] RIP: 0033:0x7f9cdf995bcb
[    2.425354] 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
[    2.425463] RSP: 002b:00007ffd42329448 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.425506] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9cdf995bcb
[    2.425555] RDX: 0000000000000000 RSI: 00007ffd423291b0 RDI: 0000000040000000
[    2.425603] RBP: 00007ffd423297d0 R08: 00007ffd423293a0 R09: 0000000000000000
[    2.425649] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.425693] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055bb73abfb68
| [    2.429537] ------------[ cut here ]------------
| [    2.429577] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/157
| [    2.429640] Modules linked in:
| [    2.429728] Tainted: [W]=WARN
[    2.429751] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.429790] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.429822] 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
[    2.429932] RSP: 0018:ff7c3f6280387d68 EFLAGS: 00010286
[    2.429965] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.430014] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff426025c317ae00
[    2.430058] RBP: 0000000000000000 R08: ff426025c32e29d0 R09: ff426025c4960030
[    2.430102] R10: ff426025c498c118 R11: fefefefefefefeff R12: 0000000000000000
[    2.430148] R13: 0000000000000010 R14: ff426025c498c000 R15: ff426025c317ae00
[    2.430199] FS:  0000000025682400(0000) GS:ff42602661e96000(0000) knlGS:0000000000000000
[    2.430252] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.430292] CR2: 00007fc05fc7d000 CR3: 0000000004923003 CR4: 0000000000771ef0
[    2.430344] PKRU: 55555554
[    2.430360] Call Trace:
[    2.430375]  <TASK>
[    2.430392]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.430417]  register_netdevice (net/core/dev.c:11488)
[    2.430440]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.430471]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.430497]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.430523]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.430546]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.430580] RIP: 0033:0x47cc8d
[    2.430604] 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 
[    2.430711] RSP: 002b:00007ffc72b1bba0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.430758] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.430803] RDX: 00007ffc72b1bc20 RSI: 00000000400454ca RDI: 0000000000000005
[    2.430848] RBP: 00007ffc72b1bbf0 R08: 0000000000000000 R09: 0000000000000000
[    2.430893] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc72b1c0f8
[    2.430938] R13: 00007ffc72b1c178 R14: 0000000000000002 R15: 0000000000543540
| [    2.431050] ------------[ cut here ]------------
| [    2.431093] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/157
| [    2.431160] Modules linked in:
| [    2.431253] Tainted: [W]=WARN
[    2.431277] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.431315] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.431346] 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
[    2.431456] RSP: 0018:ff7c3f6280387d60 EFLAGS: 00010286
[    2.431488] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.431534] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff426025c317ae00
[    2.431580] RBP: 0000000000000002 R08: ff426025c32e29d0 R09: ff426025c4960030
[    2.431627] R10: ff426025c498c118 R11: fefefefefefefeff R12: 0000000000000000
[    2.431678] R13: 0000000000000010 R14: ff426025c498c000 R15: ff426025c317ae00
[    2.431726] FS:  0000000025682400(0000) GS:ff42602661e96000(0000) knlGS:0000000000000000
[    2.431775] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.431812] CR2: 00007fc05fc7d000 CR3: 0000000004923003 CR4: 0000000000771ef0
[    2.431857] PKRU: 55555554
[    2.431871] Call Trace:
[    2.431892]  <TASK>
[    2.431907]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.431930]  notifier_call_chain (kernel/notifier.c:85)
[    2.431954]  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)
[    2.431988]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.432013]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.432045]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.432070]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.432094]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.432125] RIP: 0033:0x47cc8d
[    2.432152] 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 
[    2.432268] RSP: 002b:00007ffc72b1bbe0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.432317] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.432366] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.432410] RBP: 00007ffc72b1bc30 R08: 0000000000000000 R09: 0000000000000000
[    2.432462] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc72b1c0f8
[    2.432513] R13: 00007ffc72b1c178 R14: 0000000000000002 R15: 0000000000543540
| [    2.432620] ------------[ cut here ]------------
| [    2.432651] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/157
| [    2.432706] Modules linked in:
| [    2.432791] Tainted: [W]=WARN
[    2.432813] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.432853] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.432884] 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
[    2.432991] RSP: 0018:ff7c3f6280387c10 EFLAGS: 00010286
[    2.433019] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.433064] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff426025c317ae00
[    2.433107] RBP: 0000000000000000 R08: ff426025c32e29d0 R09: ff426025c4965030
[    2.433152] R10: ff426025c498c118 R11: fefefefefefefeff R12: 0000000000000000
[    2.433195] R13: 0000000000000010 R14: ff426025c498c000 R15: ff426025c317ae00
[    2.433247] FS:  0000000025682400(0000) GS:ff42602661e96000(0000) knlGS:0000000000000000
[    2.433299] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.433333] CR2: 00007fc05fc7d000 CR3: 0000000004923003 CR4: 0000000000771ef0
[    2.433379] PKRU: 55555554
[    2.433395] Call Trace:
[    2.433412]  <TASK>
[    2.433428]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.433454]  __dev_notify_flags (net/core/dev.c:9787)
[    2.433480]  netif_change_flags (net/core/dev.c:9820)
[    2.433505]  dev_change_flags (net/core/dev_api.c:68)
[    2.433529]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.433557]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.433583]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.433608]  sock_do_ioctl (net/socket.c:1313)
[    2.433637]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.433663]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.433686]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.433718] RIP: 0033:0x47cc8d
[    2.433742] 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 
[    2.433854] RSP: 002b:00007ffc72b1bbc0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.433900] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.433947] RDX: 00007ffc72b1bc30 RSI: 0000000000008914 RDI: 0000000000000006
[    2.433994] RBP: 00007ffc72b1bc10 R08: 0000000000000000 R09: 0000000000000000
[    2.434040] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc72b1c0f8
[    2.434085] R13: 00007ffc72b1c178 R14: 0000000000000002 R15: 0000000000543540
| [   47.401436] ------------[ cut here ]------------
| [   47.401691] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/157
| [   47.401760] Modules linked in:
| [   47.401858] Tainted: [W]=WARN
[   47.401881] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.401926] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.401958] 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
[   47.402054] RSP: 0018:ff7c3f6280387b58 EFLAGS: 00010286
[   47.402082] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.402129] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff426025c3165200
[   47.402169] RBP: 0000000000000000 R08: ff426025c32e29d0 R09: ff426025c4965030
[   47.402212] R10: ff426025c498c118 R11: fefefefefefefeff R12: 0000000000000000
[   47.402253] R13: 0000000000000010 R14: ff426025c498c000 R15: ff426025c3165200
[   47.402303] FS:  0000000000000000(0000) GS:ff42602661e96000(0000) knlGS:0000000000000000
[   47.402349] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.402382] CR2: 00005594f18ebcc0 CR3: 000000001f442001 CR4: 0000000000771ef0
[   47.402430] PKRU: 55555554
[   47.402445] Call Trace:
[   47.402462]  <TASK>
[   47.402480]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.402506]  netif_close_many (net/core/dev.c:1804)
[   47.402530]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.402560]  ? __queue_work (kernel/workqueue.c:2401)
[   47.402588]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.402625]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.402654]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.402677]  __fput (fs/file_table.c:510)
[   47.402704]  task_work_run (kernel/task_work.c:233)
[   47.402729]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.402754]  ? __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)
[   47.402775]  do_group_exit (kernel/exit.c:1119)
[   47.402798]  get_signal (kernel/signal.c:3037)
[   47.402823]  ? fsnotify_grab_connector (./include/linux/srcu.h:487 fs/notify/mark.c:854)
[   47.402854]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.402885]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3000 kernel/rcu/tree.c:3012 kernel/rcu/tree.c:3155)
[   47.402918]  ? __fput (./include/linux/percpu_counter.h:71 ./include/linux/percpu_counter.h:272 fs/file_table.c:99 fs/file_table.c:523)
[   47.402941]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.402978]  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)
[   47.403011]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.403042] RIP: 0033:0x47fb83
[   47.403064] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[   47.403096] RSP: 002b:00007ffc72b1b690 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   47.403146] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   47.403193] RDX: 000000000000000e RSI: 31e63f3838da8aea RDI: 0000000000000007
[   47.403236] RBP: 00007ffc72b1bb90 R08: 0000000000000041 R09: 00000000256833e0
[   47.403280] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   47.403324] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [   47.403497] ------------[ cut here ]------------
| [   47.403528] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/157
| [   47.403577] Modules linked in:
| [   47.403672] Tainted: [W]=WARN
[   47.403695] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.403734] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.403765] 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
[   47.403870] RSP: 0018:ff7c3f6280387bc8 EFLAGS: 00010286
[   47.403898] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.403939] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff426025c3165200
[   47.403981] RBP: 0000000000000000 R08: ff426025c32e29d0 R09: ff426025c496a030
[   47.404029] R10: ff426025c498c118 R11: fefefefefefefeff R12: 0000000000000000
[   47.404072] R13: 0000000000000011 R14: ff426025c498c000 R15: ff426025c3165200
[   47.404121] FS:  0000000000000000(0000) GS:ff42602661e96000(0000) knlGS:0000000000000000
[   47.404167] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.404203] CR2: 00005594f18ebcc0 CR3: 0000000004a2e002 CR4: 0000000000771ef0
[   47.404240] PKRU: 55555554
[   47.404255] Call Trace:
[   47.404270]  <TASK>
[   47.404286]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.404316]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.404346]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.404368]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.404388]  __fput (fs/file_table.c:510)
[   47.404410]  task_work_run (kernel/task_work.c:233)
[   47.404433]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.404458]  ? __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)
[   47.404480]  do_group_exit (kernel/exit.c:1119)
[   47.404506]  get_signal (kernel/signal.c:3037)
[   47.404529]  ? fsnotify_grab_connector (./include/linux/srcu.h:487 fs/notify/mark.c:854)
[   47.404560]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.404594]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3000 kernel/rcu/tree.c:3012 kernel/rcu/tree.c:3155)
[   47.404627]  ? __fput (./include/linux/percpu_counter.h:71 ./include/linux/percpu_counter.h:272 fs/file_table.c:99 fs/file_table.c:523)
[   47.404649]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.404677]  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)
[   47.404701]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.404732] RIP: 0033:0x47fb83
[   47.404754] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[   47.404789] RSP: 002b:00007ffc72b1b690 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   47.404837] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   47.404882] RDX: 000000000000000e RSI: 31e63f3838da8aea RDI: 0000000000000007
[   47.404930] RBP: 00007ffc72b1bb90 R08: 0000000000000041 R09: 00000000256833e0
[   47.404975] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   47.405020] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [   47.419549] ------------[ cut here ]------------
| [   47.419633] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: 1/65
| [   47.419735] Modules linked in:
| [   47.419890] Tainted: [W]=WARN
[   47.419946] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.420020] Workqueue: netns cleanup_net
[   47.420080] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.420147] 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
[   47.420288] RSP: 0018:ff7c3f628023fc78 EFLAGS: 00010286
[   47.420354] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.420435] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff426025c309c900
[   47.420523] RBP: 0000000000000000 R08: ff426025c193dcd0 R09: ff426025c310d02c
[   47.420611] R10: ff426025c304e118 R11: fefefefefefefeff R12: 0000000000000000
[   47.420691] R13: 0000000000000011 R14: ff426025c304e000 R15: ff426025c309c900
[   47.420773] FS:  0000000000000000(0000) GS:ff42602661f96000(0000) knlGS:0000000000000000
[   47.420853] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.420925] CR2: 00007f6495f3ef98 CR3: 000000001f442005 CR4: 0000000000771ef0
[   47.421009] PKRU: 55555554
[   47.421058] Call Trace:
[   47.421112]  <TASK>
[   47.421163]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.421232]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.421298]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.421357]  cleanup_net (net/core/net_namespace.c:702)
[   47.421416]  process_one_work (kernel/workqueue.c:3314)
[   47.421484]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.421544]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.421611]  kthread (kernel/kthread.c:436)
[   47.421676]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.421734]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.421794]  ? 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