======================================
| xx__-> [  229.580935] ------------[ cut here ]------------
| [  229.580975] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/381
| [  229.581041] Modules linked in:
| [  229.581131] Tainted: [W]=WARN
[  229.581154] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  229.581190] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  229.581221] 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
[  229.581320] RSP: 0018:ff798893806cfcc8 EFLAGS: 00010286
[  229.581353] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  229.581395] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3f40af0188f700
[  229.581440] RBP: 0000000000000000 R08: ff3f40af02fef190 R09: ff3f40af074b102c
[  229.581481] R10: ff3f40af019b4118 R11: fefefefefefefeff R12: 0000000000000000
[  229.581529] R13: 0000000000000010 R14: ff3f40af019b4000 R15: ff3f40af0188f700
[  229.581579] FS:  00007f13c344f740(0000) GS:ff3f40af93e16000(0000) knlGS:0000000000000000
[  229.581625] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  229.581661] CR2: 00007f13c3611280 CR3: 000000000311f005 CR4: 0000000000771ef0
[  229.581704] PKRU: 55555554
[  229.581717] Call Trace:
[  229.581731]  <TASK>
[  229.581747]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  229.581769]  register_netdevice (net/core/dev.c:11488)
[  229.581794]  register_netdev (net/core/dev.c:11552)
[  229.581814]  loopback_net_init (drivers/net/loopback.c:218)
[  229.581841]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[  229.581870]  ops_init (net/core/net_namespace.c:137)
[  229.581895]  setup_net (net/core/net_namespace.c:446)
[  229.581917]  copy_net_ns (net/core/net_namespace.c:579)
[  229.581939]  create_new_namespaces (kernel/nsproxy.c:132)
[  229.581969]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[  229.581997]  ksys_unshare (kernel/fork.c:3243)
[  229.582024]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[  229.582046]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  229.582065]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  229.582095] RIP: 0033:0x7f13c354abcb
[  229.582119] 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
[  229.582214] RSP: 002b:00007fff316ac7e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  229.582254] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f13c354abcb
[  229.582297] RDX: 0000000000000000 RSI: 00007fff316ac550 RDI: 0000000040000000
[  229.582338] RBP: 00007fff316acb70 R08: 00007fff316ac740 R09: 0000000000000000
[  229.582379] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  229.582418] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000564729266b68
| [  229.583089] ------------[ cut here ]------------
| [  229.583129] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/381
| [  229.583182] Modules linked in:
| [  229.583253] Tainted: [W]=WARN
[  229.583274] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  229.583305] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  229.583335] 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
[  229.583435] RSP: 0018:ff798893806cfd68 EFLAGS: 00010286
[  229.583462] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  229.583498] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3f40af0188f700
[  229.583544] RBP: 0000000000000000 R08: ff3f40af031822d0 R09: ff3f40af02062030
[  229.583586] R10: ff3f40af01918118 R11: fefefefefefefeff R12: 0000000000000000
[  229.583628] R13: 0000000000000010 R14: ff3f40af01918000 R15: ff3f40af0188f700
[  229.583671] FS:  000000002a095400(0000) GS:ff3f40af93e16000(0000) knlGS:0000000000000000
[  229.583709] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  229.583745] CR2: 00007f5d3fa27000 CR3: 00000000048fa006 CR4: 0000000000771ef0
[  229.583786] PKRU: 55555554
[  229.583800] Call Trace:
[  229.583814]  <TASK>
[  229.583829]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  229.583851]  register_netdevice (net/core/dev.c:11488)
[  229.583876]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[  229.583902]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[  229.583926]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  229.583949]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  229.583970]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  229.583998] RIP: 0033:0x47cc8d
[  229.584021] 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 
[  229.584126] RSP: 002b:00007fff6e829830 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  229.584170] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  229.584214] RDX: 00007fff6e8298b0 RSI: 00000000400454ca RDI: 0000000000000005
[  229.584253] RBP: 00007fff6e829880 R08: 0000000000000000 R09: 0000000000000000
[  229.584294] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff6e829d88
[  229.584336] R13: 00007fff6e829e08 R14: 0000000000000002 R15: 0000000000543540
| [  229.584436] ------------[ cut here ]------------
| [  229.584462] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/381
| [  229.584505] Modules linked in:
| [  229.584594] Tainted: [W]=WARN
[  229.584616] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  229.584656] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  229.584687] 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
[  229.584786] RSP: 0018:ff798893806cfd60 EFLAGS: 00010286
[  229.584815] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[  229.584856] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3f40af0188f700
[  229.584895] RBP: 0000000000000002 R08: ff3f40af031822d0 R09: ff3f40af02062030
[  229.584936] R10: ff3f40af01918118 R11: fefefefefefefeff R12: 0000000000000000
[  229.584979] R13: 0000000000000010 R14: ff3f40af01918000 R15: ff3f40af0188f700
[  229.585019] FS:  000000002a095400(0000) GS:ff3f40af93e16000(0000) knlGS:0000000000000000
[  229.585062] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  229.585099] CR2: 00007f5d3fa27000 CR3: 00000000048fa006 CR4: 0000000000771ef0
[  229.585145] PKRU: 55555554
[  229.585159] Call Trace:
[  229.585174]  <TASK>
[  229.585188]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[  229.585212]  notifier_call_chain (kernel/notifier.c:85)
[  229.585234]  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)
[  229.585263]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[  229.585283]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[  229.585307]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  229.585327]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  229.585349]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  229.585378] RIP: 0033:0x47cc8d
[  229.585397] 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 
[  229.585485] RSP: 002b:00007fff6e829870 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  229.585532] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  229.585576] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[  229.585617] RBP: 00007fff6e8298c0 R08: 0000000000000000 R09: 0000000000000000
[  229.585659] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff6e829d88
[  229.585699] R13: 00007fff6e829e08 R14: 0000000000000002 R15: 0000000000543540
| [  229.585793] ------------[ cut here ]------------
| [  229.585819] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/381
| [  229.585858] Modules linked in:
| [  229.585938] Tainted: [W]=WARN
[  229.585958] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  229.585994] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  229.586018] 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
[  229.586115] RSP: 0018:ff798893806cfc10 EFLAGS: 00010286
[  229.586138] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[  229.586182] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3f40af0188f700
[  229.586223] RBP: 0000000000000000 R08: ff3f40af031822d0 R09: ff3f40af019b7030
[  229.586264] R10: ff3f40af01918118 R11: fefefefefefefeff R12: 0000000000000000
[  229.586307] R13: 0000000000000010 R14: ff3f40af01918000 R15: ff3f40af0188f700
[  229.586348] FS:  000000002a095400(0000) GS:ff3f40af93e16000(0000) knlGS:0000000000000000
[  229.586389] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  229.586427] CR2: 00007f5d3fa27000 CR3: 00000000048fa006 CR4: 0000000000771ef0
[  229.586471] PKRU: 55555554
[  229.586487] Call Trace:
[  229.586500]  <TASK>
[  229.586515]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  229.586536]  __dev_notify_flags (net/core/dev.c:9787)
[  229.586562]  netif_change_flags (net/core/dev.c:9820)
[  229.586584]  dev_change_flags (net/core/dev_api.c:68)
[  229.586609]  devinet_ioctl (net/ipv4/devinet.c:1199)
[  229.586634]  inet_ioctl (net/ipv4/af_inet.c:1011)
[  229.586655]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[  229.586676]  sock_do_ioctl (net/socket.c:1313)
[  229.586701]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[  229.586722]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  229.586745]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  229.586774] RIP: 0033:0x47cc8d
[  229.586794] 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 
[  229.586888] RSP: 002b:00007fff6e829850 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  229.586932] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  229.586972] RDX: 00007fff6e8298c0 RSI: 0000000000008914 RDI: 0000000000000006
[  229.587013] RBP: 00007fff6e8298a0 R08: 0000000000000000 R09: 0000000000000000
[  229.587052] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff6e829d88
[  229.587092] R13: 00007fff6e829e08 R14: 0000000000000002 R15: 0000000000543540
| [  274.566744] ------------[ cut here ]------------
| [  274.566810] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/381
| [  274.566870] Modules linked in:
| [  274.566957] Tainted: [W]=WARN
[  274.566977] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  274.567017] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  274.567047] 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
[  274.567121] RSP: 0018:ff798893806cfb58 EFLAGS: 00010286
[  274.567148] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  274.567190] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3f40af0188fc00
[  274.567235] RBP: 0000000000000000 R08: ff3f40af031822d0 R09: ff3f40af019b7030
[  274.567276] R10: ff3f40af01918118 R11: fefefefefefefeff R12: 0000000000000000
[  274.567317] R13: 0000000000000010 R14: ff3f40af01918000 R15: ff3f40af0188fc00
[  274.567363] FS:  0000000000000000(0000) GS:ff3f40af93e16000(0000) knlGS:0000000000000000
[  274.567409] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  274.567442] CR2: 00007f5d3fa27000 CR3: 0000000025242001 CR4: 0000000000771ef0
[  274.567483] PKRU: 55555554
[  274.567495] Call Trace:
[  274.567508]  <TASK>
[  274.567524]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[  274.567548]  netif_close_many (net/core/dev.c:1804)
[  274.567568]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  274.567598]  ? __queue_work (kernel/workqueue.c:2401)
[  274.567621]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  274.567656]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[  274.567682]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[  274.567710]  __fput (fs/file_table.c:510)
[  274.567736]  task_work_run (kernel/task_work.c:233)
[  274.567760]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  274.567783]  ? netlink_recvmsg (net/netlink/af_netlink.c:1973)
[  274.567802]  do_group_exit (kernel/exit.c:1119)
[  274.567824]  get_signal (kernel/signal.c:3037)
[  274.567849]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  274.567881]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  274.567914]  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)
[  274.567935]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  274.567964] RIP: 0033:0x4c2d9e
[  274.567988] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[  274.568024] RSP: 002b:00007fff6e8291e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[  274.568068] RAX: 0000000000000014 RBX: 00007fff6e829270 RCX: 00000000004c2d9e
[  274.568102] RDX: 0000000000000000 RSI: 00007fff6e829280 RDI: 0000000000000007
[  274.568146] RBP: 00007fff6e8291f0 R08: 0000000000000000 R09: 0000000000000000
[  274.568187] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff6e829264
[  274.568227] R13: 00007fff6e829e08 R14: 00007fff6e8293b0 R15: 0000000000543540
| [  274.568367] ------------[ cut here ]------------
| [  274.568396] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/381
| [  274.568437] Modules linked in:
| [  274.568517] Tainted: [W]=WARN
[  274.568538] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  274.568571] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  274.568598] 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
[  274.568694] RSP: 0018:ff798893806cfbc8 EFLAGS: 00010286
[  274.568716] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  274.568757] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3f40af0188fc00
[  274.568798] RBP: 0000000000000000 R08: ff3f40af031822d0 R09: ff3f40af030fc830
[  274.568841] R10: ff3f40af01918118 R11: fefefefefefefeff R12: 0000000000000000
[  274.568883] R13: 0000000000000011 R14: ff3f40af01918000 R15: ff3f40af0188fc00
[  274.568926] FS:  0000000000000000(0000) GS:ff3f40af93e16000(0000) knlGS:0000000000000000
[  274.568968] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  274.568999] CR2: 00007f5d3fa27000 CR3: 0000000025242001 CR4: 0000000000771ef0
[  274.569041] PKRU: 55555554
[  274.569055] Call Trace:
[  274.569070]  <TASK>
[  274.569084]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  274.569260]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[  274.569291]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[  274.569316]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[  274.569337]  __fput (fs/file_table.c:510)
[  274.569358]  task_work_run (kernel/task_work.c:233)
[  274.569380]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[  274.569405]  ? netlink_recvmsg (net/netlink/af_netlink.c:1973)
[  274.569429]  do_group_exit (kernel/exit.c:1119)
[  274.569454]  get_signal (kernel/signal.c:3037)
[  274.569477]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[  274.569510]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[  274.569539]  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)
[  274.569563]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  274.569594] RIP: 0033:0x4c2d9e
[  274.569615] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[  274.569651] RSP: 002b:00007fff6e8291e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[  274.569697] RAX: 0000000000000014 RBX: 00007fff6e829270 RCX: 00000000004c2d9e
[  274.569737] RDX: 0000000000000000 RSI: 00007fff6e829280 RDI: 0000000000000007
[  274.569778] RBP: 00007fff6e8291f0 R08: 0000000000000000 R09: 0000000000000000
[  274.569818] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff6e829264
[  274.569867] R13: 00007fff6e829e08 R14: 00007fff6e8293b0 R15: 0000000000543540
| [  274.584232] ------------[ cut here ]------------
| [  274.584271] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: 0/12
| [  274.584332] Modules linked in:
| [  274.584414] Tainted: [W]=WARN
[  274.584438] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  274.584472] Workqueue: netns cleanup_net
[  274.584496] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  274.584525] 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
[  274.584615] RSP: 0018:ff79889380067c78 EFLAGS: 00010286
[  274.584643] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  274.584688] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3f40af0305bb00
[  274.584727] RBP: 0000000000000000 R08: ff3f40af02fef190 R09: ff3f40af030f902c
[  274.584768] R10: ff3f40af019b4118 R11: fefefefefefefeff R12: 0000000000000000
[  274.584807] R13: 0000000000000011 R14: ff3f40af019b4000 R15: ff3f40af0305bb00
[  274.584849] FS:  0000000000000000(0000) GS:ff3f40af93d16000(0000) knlGS:0000000000000000
[  274.584890] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  274.584926] CR2: 000055b6cb7c92b8 CR3: 000000000489d001 CR4: 0000000000771ef0
[  274.584968] PKRU: 55555554
[  274.584979] Call Trace:
[  274.584994]  <TASK>
[  274.585008]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  274.585036]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  274.585064]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  274.585087]  cleanup_net (net/core/net_namespace.c:702)
[  274.585121]  process_one_work (kernel/workqueue.c:3314)
[  274.585143]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  274.585165]  ? rescuer_thread (kernel/workqueue.c:3672)
[  274.585188]  kthread (kernel/kthread.c:436)
[  274.585210]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[  274.585231]  ret_from_fork (arch/x86/kernel/process.c:158)
[  274.585256]  ? 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