======================================
| xx__-> [  320.451929] ------------[ cut here ]------------
| [  320.451977] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/469
| [  320.452031] Modules linked in:
| [  320.452119] Tainted: [W]=WARN
[  320.452142] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  320.452176] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  320.452208] 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
[  320.452307] RSP: 0018:ff82f7ea807afcc8 EFLAGS: 00010286
[  320.452337] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  320.452379] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d842fdb500
[  320.452421] RBP: 0000000000000000 R08: ff3286d8433a0410 R09: ff3286d844d5902c
[  320.452465] R10: ff3286d84291c118 R11: fefefefefefefeff R12: 0000000000000000
[  320.452512] R13: 0000000000000010 R14: ff3286d84291c000 R15: ff3286d842fdb500
[  320.452558] FS:  00007fc26f653740(0000) GS:ff3286d8cd696000(0000) knlGS:0000000000000000
[  320.452597] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  320.452624] CR2: 00005582fea2e008 CR3: 0000000003302003 CR4: 0000000000771ef0
[  320.452675] PKRU: 55555554
[  320.452690] Call Trace:
[  320.452704]  <TASK>
[  320.452719]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  320.452742]  register_netdevice (net/core/dev.c:11488)
[  320.452766]  register_netdev (net/core/dev.c:11552)
[  320.452787]  loopback_net_init (drivers/net/loopback.c:218)
[  320.452807]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[  320.452838]  ops_init (net/core/net_namespace.c:137)
[  320.452861]  setup_net (net/core/net_namespace.c:446)
[  320.452886]  copy_net_ns (net/core/net_namespace.c:579)
[  320.452909]  create_new_namespaces (kernel/nsproxy.c:132)
[  320.452939]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[  320.452969]  ksys_unshare (kernel/fork.c:3243)
[  320.452996]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[  320.453020]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  320.453044]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  320.453077] RIP: 0033:0x7fc26f74ebcb
[  320.453103] 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
[  320.453202] RSP: 002b:00007ffe28b675e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  320.453244] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc26f74ebcb
[  320.453293] RDX: 0000000000000000 RSI: 00007ffe28b67350 RDI: 0000000040000000
[  320.453338] RBP: 00007ffe28b67970 R08: 00007ffe28b67540 R09: 0000000000000000
[  320.453380] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  320.453422] R13: 0000000000000000 R14: 00000000ffffffff R15: 00005582dca60b68
| [  320.454095] ------------[ cut here ]------------
| [  320.454128] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/469
| [  320.454182] Modules linked in:
| [  320.454253] Tainted: [W]=WARN
[  320.454275] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  320.454311] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  320.454338] 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
[  320.454435] RSP: 0018:ff82f7ea807afd68 EFLAGS: 00010286
[  320.454465] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  320.454548] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d842fdb500
[  320.454597] RBP: 0000000000000000 R08: ff3286d842f9c850 R09: ff3286d844e4f030
[  320.454639] R10: ff3286d843380118 R11: fefefefefefefeff R12: 0000000000000000
[  320.454682] R13: 0000000000000010 R14: ff3286d843380000 R15: ff3286d842fdb500
[  320.454729] FS:  00000000133be400(0000) GS:ff3286d8cd696000(0000) knlGS:0000000000000000
[  320.454775] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  320.454810] CR2: 00007f5df4e41000 CR3: 000000000316e004 CR4: 0000000000771ef0
[  320.454849] PKRU: 55555554
[  320.454864] Call Trace:
[  320.454879]  <TASK>
[  320.454894]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  320.454918]  register_netdevice (net/core/dev.c:11488)
[  320.454939]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[  320.454964]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[  320.454987]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  320.455011]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  320.455031]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  320.455061] RIP: 0033:0x47cc8d
[  320.455082] 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 
[  320.455181] RSP: 002b:00007ffec0004470 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  320.455225] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  320.455267] RDX: 00007ffec00044f0 RSI: 00000000400454ca RDI: 0000000000000005
[  320.455304] RBP: 00007ffec00044c0 R08: 0000000000000000 R09: 0000000000000000
[  320.455346] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffec00049c8
[  320.455392] R13: 00007ffec0004a48 R14: 0000000000000002 R15: 0000000000543540
| [  320.455490] ------------[ cut here ]------------
| [  320.455522] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/469
| [  320.455571] Modules linked in:
| [  320.455645] Tainted: [W]=WARN
[  320.455665] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  320.455701] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  320.455731] 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
[  320.455825] RSP: 0018:ff82f7ea807afd60 EFLAGS: 00010286
[  320.455855] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[  320.455894] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d842fdb500
[  320.455935] RBP: 0000000000000002 R08: ff3286d842f9c850 R09: ff3286d844e4f030
[  320.455980] R10: ff3286d843380118 R11: fefefefefefefeff R12: 0000000000000000
[  320.456022] R13: 0000000000000010 R14: ff3286d843380000 R15: ff3286d842fdb500
[  320.456065] FS:  00000000133be400(0000) GS:ff3286d8cd696000(0000) knlGS:0000000000000000
[  320.456113] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  320.456148] CR2: 00007f5df4e41000 CR3: 000000000316e004 CR4: 0000000000771ef0
[  320.456190] PKRU: 55555554
[  320.456202] Call Trace:
[  320.456213]  <TASK>
[  320.456229]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  320.456252]  notifier_call_chain (kernel/notifier.c:85)
[  320.456274]  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)
[  320.456305]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[  320.456331]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[  320.456353]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  320.456375]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  320.456396]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  320.456425] RIP: 0033:0x47cc8d
[  320.456446] 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 
[  320.456559] RSP: 002b:00007ffec00044b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  320.456605] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  320.456647] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[  320.456689] RBP: 00007ffec0004500 R08: 0000000000000000 R09: 0000000000000000
[  320.456730] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffec00049c8
[  320.456773] R13: 00007ffec0004a48 R14: 0000000000000002 R15: 0000000000543540
| [  320.456871] ------------[ cut here ]------------
| [  320.456898] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/469
| [  320.456949] Modules linked in:
| [  320.457026] Tainted: [W]=WARN
[  320.457048] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  320.457086] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  320.457116] 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
[  320.457212] RSP: 0018:ff82f7ea807afc10 EFLAGS: 00010286
[  320.457239] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[  320.457285] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d842fdb500
[  320.457329] RBP: 0000000000000000 R08: ff3286d842f9c850 R09: ff3286d843014030
[  320.457376] R10: ff3286d843380118 R11: fefefefefefefeff R12: 0000000000000000
[  320.457419] R13: 0000000000000010 R14: ff3286d843380000 R15: ff3286d842fdb500
[  320.457462] FS:  00000000133be400(0000) GS:ff3286d8cd696000(0000) knlGS:0000000000000000
[  320.457512] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  320.457548] CR2: 00007f5df4e41000 CR3: 000000000316e004 CR4: 0000000000771ef0
[  320.457593] PKRU: 55555554
[  320.457606] Call Trace:
[  320.457622]  <TASK>
[  320.457637]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  320.457661]  __dev_notify_flags (net/core/dev.c:9787)
[  320.457683]  netif_change_flags (net/core/dev.c:9820)
[  320.457701]  dev_change_flags (net/core/dev_api.c:68)
[  320.457725]  devinet_ioctl (net/ipv4/devinet.c:1199)
[  320.457747]  inet_ioctl (net/ipv4/af_inet.c:1011)
[  320.457767]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[  320.457791]  sock_do_ioctl (net/socket.c:1313)
[  320.457815]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  320.457838]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  320.457864]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  320.457894] RIP: 0033:0x47cc8d
[  320.457916] 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 
[  320.458015] RSP: 002b:00007ffec0004490 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  320.458057] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  320.458097] RDX: 00007ffec0004500 RSI: 0000000000008914 RDI: 0000000000000006
[  320.458144] RBP: 00007ffec00044e0 R08: 0000000000000000 R09: 0000000000000000
[  320.458187] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffec00049c8
[  320.458228] R13: 00007ffec0004a48 R14: 0000000000000002 R15: 0000000000543540
| [  365.438311] ------------[ cut here ]------------
| [  365.438385] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/469
| [  365.438465] Modules linked in:
| [  365.438542] Tainted: [W]=WARN
[  365.438568] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  365.438609] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  365.438643] 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
[  365.438742] RSP: 0018:ff82f7ea807afb58 EFLAGS: 00010286
[  365.438771] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  365.438811] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d84183ba00
[  365.438852] RBP: 0000000000000000 R08: ff3286d842f9c850 R09: ff3286d843014030
[  365.438894] R10: ff3286d843380118 R11: fefefefefefefeff R12: 0000000000000000
[  365.438937] R13: 0000000000000010 R14: ff3286d843380000 R15: ff3286d84183ba00
[  365.438993] FS:  0000000000000000(0000) GS:ff3286d8cd696000(0000) knlGS:0000000000000000
[  365.439039] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.439075] CR2: 00007f5df4e41000 CR3: 0000000030e42005 CR4: 0000000000771ef0
[  365.439121] PKRU: 55555554
[  365.439137] Call Trace:
[  365.439154]  <TASK>
[  365.439169]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  365.439191]  netif_close_many (net/core/dev.c:1804)
[  365.439218]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  365.439249]  ? __queue_work (kernel/workqueue.c:2401)
[  365.439272]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  365.439301]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[  365.439325]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[  365.439350]  __fput (fs/file_table.c:510)
[  365.439376]  task_work_run (kernel/task_work.c:233)
[  365.439403]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  365.439424]  ? __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)
[  365.439449]  do_group_exit (kernel/exit.c:1119)
[  365.439473]  get_signal (kernel/signal.c:3037)
[  365.439499]  ? fsnotify_grab_connector (./include/linux/srcu.h:487 fs/notify/mark.c:854)
[  365.439525]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  365.439556]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3000 kernel/rcu/tree.c:3012 kernel/rcu/tree.c:3155)
[  365.439589]  ? __fput (./include/linux/percpu_counter.h:71 ./include/linux/percpu_counter.h:272 fs/file_table.c:99 fs/file_table.c:523)
[  365.439614]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  365.439646]  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)
[  365.439668]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  365.439700] RIP: 0033:0x47fb83
[  365.439723] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[  365.439758] RSP: 002b:00007ffec0003f60 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  365.439800] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[  365.439842] RDX: 000000000000000e RSI: 1635f008a1898ec2 RDI: 0000000000000007
[  365.439886] RBP: 00007ffec0004460 R08: 0000000000000041 R09: 00000000133bf3e0
[  365.439928] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[  365.439973] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [  365.440465] ------------[ cut here ]------------
| [  365.440497] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/469
| [  365.440548] Modules linked in:
| [  365.440638] Tainted: [W]=WARN
[  365.440663] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  365.440704] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  365.440733] 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
[  365.440828] RSP: 0018:ff82f7ea807afbc8 EFLAGS: 00010286
[  365.440854] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  365.440895] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d84183ba00
[  365.440935] RBP: 0000000000000000 R08: ff3286d842f9c850 R09: ff3286d846865030
[  365.440977] R10: ff3286d843380118 R11: fefefefefefefeff R12: 0000000000000000
[  365.441017] R13: 0000000000000011 R14: ff3286d843380000 R15: ff3286d84183ba00
[  365.441061] FS:  0000000000000000(0000) GS:ff3286d8cd696000(0000) knlGS:0000000000000000
[  365.441110] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.441143] CR2: 00007fe94bce7680 CR3: 0000000004d49006 CR4: 0000000000771ef0
[  365.441185] PKRU: 55555554
[  365.441200] Call Trace:
[  365.441215]  <TASK>
[  365.441235]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  365.441263]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  365.441287]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[  365.441312]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[  365.441332]  __fput (fs/file_table.c:510)
[  365.441357]  task_work_run (kernel/task_work.c:233)
[  365.441379]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  365.441403]  ? __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)
[  365.441429]  do_group_exit (kernel/exit.c:1119)
[  365.441451]  get_signal (kernel/signal.c:3037)
[  365.441473]  ? fsnotify_grab_connector (./include/linux/srcu.h:487 fs/notify/mark.c:854)
[  365.441502]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  365.441533]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3000 kernel/rcu/tree.c:3012 kernel/rcu/tree.c:3155)
[  365.441565]  ? __fput (./include/linux/percpu_counter.h:71 ./include/linux/percpu_counter.h:272 fs/file_table.c:99 fs/file_table.c:523)
[  365.441588]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  365.441620]  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)
[  365.441643]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  365.441670] RIP: 0033:0x47fb83
[  365.441692] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[  365.441732] RSP: 002b:00007ffec0003f60 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  365.441777] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[  365.441821] RDX: 000000000000000e RSI: 1635f008a1898ec2 RDI: 0000000000000007
[  365.441863] RBP: 00007ffec0004460 R08: 0000000000000041 R09: 00000000133bf3e0
[  365.441902] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[  365.441945] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [  365.450213] ------------[ cut here ]------------
| [  365.450253] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: 0/12
| [  365.450317] Modules linked in:
| [  365.450398] Tainted: [W]=WARN
[  365.450419] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  365.450454] Workqueue: netns cleanup_net
[  365.450479] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  365.450507] 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
[  365.450608] RSP: 0018:ff82f7ea80067c78 EFLAGS: 00010286
[  365.450640] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  365.450683] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d84183b900
[  365.450724] RBP: 0000000000000000 R08: ff3286d8433a0410 R09: ff3286d84686102c
[  365.450764] R10: ff3286d84291c118 R11: fefefefefefefeff R12: 0000000000000000
[  365.450804] R13: 0000000000000011 R14: ff3286d84291c000 R15: ff3286d84183b900
[  365.450849] FS:  0000000000000000(0000) GS:ff3286d8cd816000(0000) knlGS:0000000000000000
[  365.450892] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  365.450925] CR2: 0000561836ae62b8 CR3: 00000000033e7005 CR4: 0000000000771ef0
[  365.450967] PKRU: 55555554
[  365.450982] Call Trace:
[  365.450998]  <TASK>
[  365.451013]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  365.451045]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  365.451073]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  365.451096]  cleanup_net (net/core/net_namespace.c:702)
[  365.451126]  process_one_work (kernel/workqueue.c:3314)
[  365.451152]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  365.451177]  ? rescuer_thread (kernel/workqueue.c:3672)
[  365.451197]  kthread (kernel/kthread.c:436)
[  365.451221]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[  365.451242]  ret_from_fork (arch/x86/kernel/process.c:158)
[  365.451266]  ? 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