======================================
| xx__-> [    2.231952] ------------[ cut here ]------------
| [    2.232002] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/160
| [    2.232070] Modules linked in:
| [    2.232158] Tainted: [W]=WARN
[    2.232178] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.232216] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.232246] 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
[    2.232339] RSP: 0018:ff6417dbc03afcc8 EFLAGS: 00010286
[    2.232370] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.232417] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4190f600
[    2.232458] RBP: 0000000000000000 R08: ff1b0b4f41964090 R09: ff1b0b4f44b0302c
[    2.232497] R10: ff1b0b4f4327e118 R11: fefefefefefefeff R12: 0000000000000000
[    2.232537] R13: 0000000000000010 R14: ff1b0b4f4327e000 R15: ff1b0b4f4190f600
[    2.232587] FS:  00007fa3c756f740(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[    2.233354] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.233393] CR2: 0000560abb60b310 CR3: 0000000004abb004 CR4: 0000000000771ef0
[    2.233435] PKRU: 55555554
[    2.233454] Call Trace:
[    2.233472]  <TASK>
[    2.233491]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.233517]  register_netdevice (net/core/dev.c:11488)
[    2.233541]  register_netdev (net/core/dev.c:11552)
[    2.233564]  loopback_net_init (drivers/net/loopback.c:218)
[    2.233597]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.233632]  ops_init (net/core/net_namespace.c:137)
[    2.233656]  setup_net (net/core/net_namespace.c:446)
[    2.233683]  copy_net_ns (net/core/net_namespace.c:579)
[    2.233711]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.233744]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.233772]  ksys_unshare (kernel/fork.c:3243)
[    2.233797]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.233819]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.233843]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.233873] RIP: 0033:0x7fa3c766abcb
[    2.233895] 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
[    2.233991] RSP: 002b:00007ffea2336e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.234036] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa3c766abcb
[    2.234080] RDX: 0000000000000000 RSI: 00007ffea2336bb0 RDI: 0000000040000000
[    2.234123] RBP: 00007ffea23371d0 R08: 00007ffea2336da0 R09: 0000000000000000
[    2.234161] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.234203] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000560abb60eb68
| [    2.237564] ------------[ cut here ]------------
| [    2.237601] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
| [    2.237654] Modules linked in:
| [    2.237735] Tainted: [W]=WARN
[    2.237757] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.237791] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.237821] 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
[    2.237919] RSP: 0018:ff6417dbc03afd68 EFLAGS: 00010286
[    2.237942] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.237981] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4190f600
[    2.238030] RBP: 0000000000000000 R08: ff1b0b4f43336090 R09: ff1b0b4f44b00030
[    2.238072] R10: ff1b0b4f44988118 R11: fefefefefefefeff R12: 0000000000000000
[    2.238115] R13: 0000000000000010 R14: ff1b0b4f44988000 R15: ff1b0b4f4190f600
[    2.238159] FS:  0000000019838400(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[    2.238202] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.238236] CR2: 00007f7e23c8c000 CR3: 0000000004a49005 CR4: 0000000000771ef0
[    2.238277] PKRU: 55555554
[    2.238291] Call Trace:
[    2.238307]  <TASK>
[    2.238320]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.238344]  register_netdevice (net/core/dev.c:11488)
[    2.238364]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.238389]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.238413]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.238435]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.238459]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.238487] RIP: 0033:0x47cc8d
[    2.238506] 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 
[    2.238601] RSP: 002b:00007ffcf3840330 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.238647] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.238689] RDX: 00007ffcf38403b0 RSI: 00000000400454ca RDI: 0000000000000005
[    2.238731] RBP: 00007ffcf3840380 R08: 0000000000000000 R09: 0000000000000000
[    2.238771] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf3840888
[    2.238811] R13: 00007ffcf3840908 R14: 0000000000000002 R15: 0000000000543540
| [    2.238904] ------------[ cut here ]------------
| [    2.238932] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
| [    2.238981] Modules linked in:
| [    2.239061] Tainted: [W]=WARN
[    2.239084] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.239118] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.239149] 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
[    2.239242] RSP: 0018:ff6417dbc03afd60 EFLAGS: 00010286
[    2.239269] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.239313] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4190f600
[    2.239353] RBP: 0000000000000002 R08: ff1b0b4f43336090 R09: ff1b0b4f44b00030
[    2.239393] R10: ff1b0b4f44988118 R11: fefefefefefefeff R12: 0000000000000000
[    2.239434] R13: 0000000000000010 R14: ff1b0b4f44988000 R15: ff1b0b4f4190f600
[    2.239477] FS:  0000000019838400(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[    2.239518] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.239553] CR2: 00007f7e23c8c000 CR3: 0000000004a49005 CR4: 0000000000771ef0
[    2.239597] PKRU: 55555554
[    2.239611] Call Trace:
[    2.239626]  <TASK>
[    2.239638]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.239659]  notifier_call_chain (kernel/notifier.c:85)
[    2.239683]  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)
[    2.239709]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.239731]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.239757]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.239779]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.239802]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.239829] RIP: 0033:0x47cc8d
[    2.239850] 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 
[    2.239946] RSP: 002b:00007ffcf3840370 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.239988] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.240030] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.240071] RBP: 00007ffcf38403c0 R08: 0000000000000000 R09: 0000000000000000
[    2.240111] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf3840888
[    2.240150] R13: 00007ffcf3840908 R14: 0000000000000002 R15: 0000000000543540
| [    2.240254] ------------[ cut here ]------------
| [    2.240285] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
| [    2.240338] Modules linked in:
| [    2.240417] Tainted: [W]=WARN
[    2.240437] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.240476] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.240498] 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
[    2.240597] RSP: 0018:ff6417dbc03afc10 EFLAGS: 00010286
[    2.240626] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.240668] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4190f600
[    2.240707] RBP: 0000000000000000 R08: ff1b0b4f43336090 R09: ff1b0b4f44b05030
[    2.240751] R10: ff1b0b4f44988118 R11: fefefefefefefeff R12: 0000000000000000
[    2.240788] R13: 0000000000000010 R14: ff1b0b4f44988000 R15: ff1b0b4f4190f600
[    2.240832] FS:  0000000019838400(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[    2.240875] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.240912] CR2: 00007f7e23c8c000 CR3: 0000000004a49005 CR4: 0000000000771ef0
[    2.240947] PKRU: 55555554
[    2.240962] Call Trace:
[    2.240975]  <TASK>
[    2.240987]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.241009]  __dev_notify_flags (net/core/dev.c:9787)
[    2.241036]  netif_change_flags (net/core/dev.c:9820)
[    2.241061]  dev_change_flags (net/core/dev_api.c:68)
[    2.241083]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.241108]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.241129]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.241150]  sock_do_ioctl (net/socket.c:1313)
[    2.241174]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.241197]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.241218]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.241245] RIP: 0033:0x47cc8d
[    2.241267] 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 
[    2.241364] RSP: 002b:00007ffcf3840350 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.241403] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.241441] RDX: 00007ffcf38403c0 RSI: 0000000000008914 RDI: 0000000000000006
[    2.241475] RBP: 00007ffcf38403a0 R08: 0000000000000000 R09: 0000000000000000
[    2.241515] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf3840888
[    2.241552] R13: 00007ffcf3840908 R14: 0000000000000002 R15: 0000000000543540
| [   47.214621] ------------[ cut here ]------------
| [   47.214706] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
| [   47.214757] Modules linked in:
| [   47.214848] Tainted: [W]=WARN
[   47.214872] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.214907] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.214937] 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
[   47.215037] RSP: 0018:ff6417dbc03afb58 EFLAGS: 00010286
[   47.215063] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.215111] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4191ca00
[   47.215156] RBP: 0000000000000000 R08: ff1b0b4f43336090 R09: ff1b0b4f44b05030
[   47.215198] R10: ff1b0b4f44988118 R11: fefefefefefefeff R12: 0000000000000000
[   47.215239] R13: 0000000000000010 R14: ff1b0b4f44988000 R15: ff1b0b4f4191ca00
[   47.215282] FS:  0000000000000000(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[   47.215326] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.215362] CR2: 00007f638f5126f0 CR3: 0000000004997001 CR4: 0000000000771ef0
[   47.215405] PKRU: 55555554
[   47.215418] Call Trace:
[   47.215433]  <TASK>
[   47.215450]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.215473]  netif_close_many (net/core/dev.c:1804)
[   47.215498]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.215526]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.215556]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.215585]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.215608]  __fput (fs/file_table.c:510)
[   47.215634]  task_work_run (kernel/task_work.c:233)
[   47.215656]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.215683]  ? __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)
[   47.215707]  do_group_exit (kernel/exit.c:1119)
[   47.215728]  get_signal (kernel/signal.c:3037)
[   47.215753]  ? fsnotify_grab_connector (./include/linux/srcu.h:487 fs/notify/mark.c:854)
[   47.215783]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.215809]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3000 kernel/rcu/tree.c:3012 kernel/rcu/tree.c:3155)
[   47.215839]  ? __fput (./include/linux/percpu_counter.h:71 ./include/linux/percpu_counter.h:272 fs/file_table.c:99 fs/file_table.c:523)
[   47.215863]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.215895]  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)
[   47.215920]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.215954] RIP: 0033:0x47fb83
[   47.215978] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[   47.216011] RSP: 002b:00007ffcf383fe20 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   47.216052] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   47.216094] RDX: 000000000000000e RSI: 7d1f21c56980167a RDI: 0000000000000007
[   47.216136] RBP: 00007ffcf3840320 R08: 0000000000000041 R09: 00000000198393e0
[   47.216184] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   47.216228] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [   47.216402] ------------[ cut here ]------------
| [   47.216435] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
| [   47.216490] Modules linked in:
| [   47.216570] Tainted: [W]=WARN
[   47.216593] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.216632] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.216656] 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
[   47.216757] RSP: 0018:ff6417dbc03afbc8 EFLAGS: 00010286
[   47.216785] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.216827] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4191ca00
[   47.216868] RBP: 0000000000000000 R08: ff1b0b4f43336090 R09: ff1b0b4f4205a830
[   47.216919] R10: ff1b0b4f44988118 R11: fefefefefefefeff R12: 0000000000000000
[   47.216960] R13: 0000000000000011 R14: ff1b0b4f44988000 R15: ff1b0b4f4191ca00
[   47.217003] FS:  0000000000000000(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[   47.217047] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.217080] CR2: 00007f638f5126f0 CR3: 0000000004997001 CR4: 0000000000771ef0
[   47.217123] PKRU: 55555554
[   47.217138] Call Trace:
[   47.217156]  <TASK>
[   47.217168]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.217198]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.217226]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.217248]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.217267]  __fput (fs/file_table.c:510)
[   47.217288]  task_work_run (kernel/task_work.c:233)
[   47.217307]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.217327]  ? __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)
[   47.217346]  do_group_exit (kernel/exit.c:1119)
[   47.217368]  get_signal (kernel/signal.c:3037)
[   47.217390]  ? fsnotify_grab_connector (./include/linux/srcu.h:487 fs/notify/mark.c:854)
[   47.217418]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.217446]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3000 kernel/rcu/tree.c:3012 kernel/rcu/tree.c:3155)
[   47.217476]  ? __fput (./include/linux/percpu_counter.h:71 ./include/linux/percpu_counter.h:272 fs/file_table.c:99 fs/file_table.c:523)
[   47.217496]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.217524]  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)
[   47.217545]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.217574] RIP: 0033:0x47fb83
[   47.217838] Code: Unable to access opcode bytes at 0x47fb59.

Code starting with the faulting instruction
===========================================
[   47.217877] RSP: 002b:00007ffcf383fe20 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   47.217918] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   47.217962] RDX: 000000000000000e RSI: 7d1f21c56980167a RDI: 0000000000000007
[   47.218004] RBP: 00007ffcf3840320 R08: 0000000000000041 R09: 00000000198393e0
[   47.218045] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   47.218087] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
| [   47.226673] ------------[ cut here ]------------
| [   47.226749] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: 0/12
| [   47.226844] Modules linked in:
| [   47.226995] Tainted: [W]=WARN
[   47.227050] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.227118] Workqueue: netns cleanup_net
[   47.227182] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.227246] 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
[   47.227378] RSP: 0018:ff6417dbc0067c78 EFLAGS: 00010286
[   47.227440] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.227518] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4194b900
[   47.227609] RBP: 0000000000000000 R08: ff1b0b4f41964090 R09: ff1b0b4f431dd82c
[   47.227687] R10: ff1b0b4f4327e118 R11: fefefefefefefeff R12: 0000000000000000
[   47.227764] R13: 0000000000000011 R14: ff1b0b4f4327e000 R15: ff1b0b4f4194b900
[   47.227845] FS:  0000000000000000(0000) GS:ff1b0b4fc4d96000(0000) knlGS:0000000000000000
[   47.227922] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.227991] CR2: 00007ff76e7f6f98 CR3: 000000002ac42001 CR4: 0000000000771ef0
[   47.228069] PKRU: 55555554
[   47.228117] Call Trace:
[   47.228172]  <TASK>
[   47.228221]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.228286]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.228350]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.228408]  cleanup_net (net/core/net_namespace.c:702)
[   47.228465]  process_one_work (kernel/workqueue.c:3314)
[   47.228525]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.228598]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.228655]  kthread (kernel/kthread.c:436)
[   47.228712]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.228776]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.228834]  ? 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