======================================
| xx__-> [    2.272268] ------------[ cut here ]------------
| [    2.272317] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/159
| [    2.272371] Modules linked in:
| [    2.272436] Tainted: [W]=WARN
[    2.272461] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.272489] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.272509] 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
[    2.272574] RSP: 0018:ff8b85e2403a7cc8 EFLAGS: 00010286
[    2.272594] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.272625] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff438ea58308d000
[    2.272659] RBP: 0000000000000000 R08: ff438ea5832c5dd0 R09: ff438ea58301402c
[    2.272691] R10: ff438ea583017118 R11: fefefefefefefeff R12: 0000000000000000
[    2.272717] R13: 0000000000000010 R14: ff438ea583017000 R15: ff438ea58308d000
[    2.272749] FS:  00007fdbca7d4740(0000) GS:ff438ea603c96000(0000) knlGS:0000000000000000
[    2.272778] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.272801] CR2: 000055f338d11310 CR3: 0000000004a0f004 CR4: 0000000000771ef0
[    2.272831] PKRU: 55555554
[    2.272841] Call Trace:
[    2.272854]  <TASK>
[    2.272866]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.272880]  register_netdevice (net/core/dev.c:11488)
[    2.272897]  register_netdev (net/core/dev.c:11552)
[    2.272912]  loopback_net_init (drivers/net/loopback.c:218)
[    2.272936]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.272956]  ops_init (net/core/net_namespace.c:137)
[    2.272976]  setup_net (net/core/net_namespace.c:446)
[    2.273002]  copy_net_ns (net/core/net_namespace.c:579)
[    2.273020]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.273044]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.273063]  ksys_unshare (kernel/fork.c:3243)
[    2.273091]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.273106]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.273121]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.273144] RIP: 0033:0x7fdbca8cfbcb
[    2.273163] 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
[    2.273224] RSP: 002b:00007ffeafd39548 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.273256] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdbca8cfbcb
[    2.273290] RDX: 0000000000000000 RSI: 00007ffeafd392b0 RDI: 0000000040000000
[    2.273321] RBP: 00007ffeafd398d0 R08: 00007ffeafd394a0 R09: 0000000000000000
[    2.273351] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.273383] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055f338d14b68
| [    2.277210] ------------[ cut here ]------------
| [    2.277247] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/159
| [    2.277285] Modules linked in:
| [    2.277344] Tainted: [W]=WARN
[    2.277357] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.277381] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.277402] 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
[    2.277456] RSP: 0018:ff8b85e2403a7d68 EFLAGS: 00010286
[    2.277474] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.277502] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff438ea58308d000
[    2.277530] RBP: 0000000000000000 R08: ff438ea581949910 R09: ff438ea584ac9030
[    2.277555] R10: ff438ea584998118 R11: fefefefefefefeff R12: 0000000000000000
[    2.277589] R13: 0000000000000010 R14: ff438ea584998000 R15: ff438ea58308d000
[    2.277615] FS:  00000000094d1400(0000) GS:ff438ea603c96000(0000) knlGS:0000000000000000
[    2.277645] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.277668] CR2: 00007f5610b4a000 CR3: 00000000031a1005 CR4: 0000000000771ef0
[    2.277696] PKRU: 55555554
[    2.277706] Call Trace:
[    2.277716]  <TASK>
[    2.277727]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.277741]  register_netdevice (net/core/dev.c:11488)
[    2.277757]  __tun_chr_ioctl (drivers/net/tun.c:2876 drivers/net/tun.c:3157)
[    2.277778]  ? do_sys_openat2 (./include/linux/fs.h:2553 fs/open.c:1363)
[    2.277793]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.277811]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.277827]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.277847] RIP: 0033:0x47cc8d
[    2.277860] 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 
[    2.277920] RSP: 002b:00007ffce033e8d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.277947] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.277973] RDX: 00007ffce033e950 RSI: 00000000400454ca RDI: 0000000000000005
[    2.278002] RBP: 00007ffce033e920 R08: 0000000000000000 R09: 0000000000000000
[    2.278027] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffce033ee28
[    2.278051] R13: 00007ffce033eea8 R14: 0000000000000002 R15: 0000000000543540
| [    2.278121] ------------[ cut here ]------------
| [    2.278141] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/159
| [    2.278170] Modules linked in:
| [    2.278216] Tainted: [W]=WARN
[    2.278233] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.278257] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.278277] 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
[    2.278334] RSP: 0018:ff8b85e2403a7d60 EFLAGS: 00010286
[    2.278353] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.278376] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff438ea58308d000
[    2.278402] RBP: 0000000000000002 R08: ff438ea581949910 R09: ff438ea584ac9030
[    2.278426] R10: ff438ea584998118 R11: fefefefefefefeff R12: 0000000000000000
[    2.278450] R13: 0000000000000010 R14: ff438ea584998000 R15: ff438ea58308d000
[    2.278487] FS:  00000000094d1400(0000) GS:ff438ea603c96000(0000) knlGS:0000000000000000
[    2.278517] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.278540] CR2: 00007f5610b4a000 CR3: 00000000031a1005 CR4: 0000000000771ef0
[    2.278565] PKRU: 55555554
[    2.278574] Call Trace:
[    2.278583]  <TASK>
[    2.278593]  rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121)
[    2.278608]  notifier_call_chain (kernel/notifier.c:85)
[    2.278621]  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)
[    2.278646]  __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285)
[    2.278661]  ? file_init_path (./include/linux/pagemap.h:126 fs/file_table.c:368)
[    2.278679]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.278692]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.278705]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.278722] RIP: 0033:0x47cc8d
[    2.278739] 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 
[    2.278795] RSP: 002b:00007ffce033e910 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.278821] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.278847] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.278872] RBP: 00007ffce033e960 R08: 0000000000000005 R09: 00000000000003a0
[    2.278898] R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffce033ee28
[    2.278921] R13: 00007ffce033eea8 R14: 0000000000000002 R15: 0000000000543540
| [    2.278988] ------------[ cut here ]------------
| [    2.279012] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/159
| [    2.279043] Modules linked in:
| [    2.279093] Tainted: [W]=WARN
[    2.279105] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.279130] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.279156] 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
[    2.279216] RSP: 0018:ff8b85e2403a7c10 EFLAGS: 00010286
[    2.279231] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.279259] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff438ea58308d000
[    2.279283] RBP: 0000000000000000 R08: ff438ea581949910 R09: ff438ea584ace030
[    2.279305] R10: ff438ea584998118 R11: fefefefefefefeff R12: 0000000000000000
[    2.279330] R13: 0000000000000010 R14: ff438ea584998000 R15: ff438ea58308d000
[    2.279356] FS:  00000000094d1400(0000) GS:ff438ea603c96000(0000) knlGS:0000000000000000
[    2.279385] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.279410] CR2: 00007f5610b4a000 CR3: 00000000031a1005 CR4: 0000000000771ef0
[    2.279437] PKRU: 55555554
[    2.279446] Call Trace:
[    2.279454]  <TASK>
[    2.279466]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.279480]  __dev_notify_flags (net/core/dev.c:9787)
[    2.279500]  netif_change_flags (net/core/dev.c:9820)
[    2.279521]  dev_change_flags (net/core/dev_api.c:68)
[    2.279535]  devinet_ioctl (net/ipv4/devinet.c:1199)
[    2.279556]  inet_ioctl (net/ipv4/af_inet.c:1011)
[    2.279571]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[    2.279584]  sock_do_ioctl (net/socket.c:1313)
[    2.279603]  __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583)
[    2.279617]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.279631]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.279656] RIP: 0033:0x47cc8d
[    2.279668] 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 
[    2.279733] RSP: 002b:00007ffce033e8f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.279758] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.279785] RDX: 00007ffce033e960 RSI: 0000000000008914 RDI: 0000000000000006
[    2.279810] RBP: 00007ffce033e940 R08: 0000000000000005 R09: 00000000000003a0
[    2.279840] R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffce033ee28
[    2.279863] R13: 00007ffce033eea8 R14: 0000000000000002 R15: 0000000000543540
| [   47.248831] ------------[ cut here ]------------
| [   47.248907] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/159
| [   47.248973] Modules linked in:
| [   47.249059] Tainted: [W]=WARN
[   47.249082] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.249125] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.249156] 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
[   47.249264] RSP: 0018:ff8b85e2403a7b58 EFLAGS: 00010286
[   47.249294] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.249334] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff438ea58304a800
[   47.249375] RBP: 0000000000000000 R08: ff438ea581949910 R09: ff438ea584ace030
[   47.249416] R10: ff438ea584998118 R11: fefefefefefefeff R12: 0000000000000000
[   47.249457] R13: 0000000000000010 R14: ff438ea584998000 R15: ff438ea58304a800
[   47.249505] FS:  0000000000000000(0000) GS:ff438ea603c96000(0000) knlGS:0000000000000000
[   47.249551] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.249588] CR2: 00007f5610b4a000 CR3: 0000000020c42001 CR4: 0000000000771ef0
[   47.249638] PKRU: 55555554
[   47.249653] Call Trace:
[   47.249668]  <TASK>
[   47.249684]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   47.249708]  netif_close_many (net/core/dev.c:1804)
[   47.249731]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   47.249760]  ? __queue_work (kernel/workqueue.c:2401)
[   47.249790]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.249819]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.249844]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.249866]  __fput (fs/file_table.c:510)
[   47.249891]  task_work_run (kernel/task_work.c:233)
[   47.249914]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.249939]  do_group_exit (kernel/exit.c:1119)
[   47.249962]  get_signal (kernel/signal.c:3037)
[   47.249988]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.250018]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.250051]  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)
[   47.250076]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.250108] RIP: 0033:0x4c2d9e
[   47.250134] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.250167] RSP: 002b:00007ffce033e280 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.250208] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   47.250247] RDX: 0000000000000014 RSI: 00007ffce033e360 RDI: 0000000000000007
[   47.250297] RBP: 00007ffce033e290 R08: 00007ffce033e320 R09: 000000000000000c
[   47.250339] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000094de080
[   47.250380] R13: 00007ffce033eea8 R14: 00007ffce033e450 R15: 0000000000543540
| [   47.250747] ------------[ cut here ]------------
| [   47.250783] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/159
| [   47.250833] Modules linked in:
| [   47.250923] Tainted: [W]=WARN
[   47.250944] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.250980] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.251008] 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
[   47.251103] RSP: 0018:ff8b85e2403a7bc8 EFLAGS: 00010286
[   47.251138] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.251178] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff438ea58304a800
[   47.251224] RBP: 0000000000000000 R08: ff438ea581949910 R09: ff438ea584ad5830
[   47.251268] R10: ff438ea584998118 R11: fefefefefefefeff R12: 0000000000000000
[   47.251314] R13: 0000000000000011 R14: ff438ea584998000 R15: ff438ea58304a800
[   47.251358] FS:  0000000000000000(0000) GS:ff438ea603c96000(0000) knlGS:0000000000000000
[   47.251398] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.251426] CR2: 00007f5610b4a000 CR3: 0000000020c42001 CR4: 0000000000771ef0
[   47.251469] PKRU: 55555554
[   47.251484] Call Trace:
[   47.251498]  <TASK>
[   47.251513]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.251541]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[   47.251568]  __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628)
[   47.251593]  tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505)
[   47.251617]  __fput (fs/file_table.c:510)
[   47.251640]  task_work_run (kernel/task_work.c:233)
[   47.251662]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[   47.251686]  do_group_exit (kernel/exit.c:1119)
[   47.251709]  get_signal (kernel/signal.c:3037)
[   47.251729]  arch_do_signal_or_restart (arch/x86/kernel/signal.c:337)
[   47.251758]  exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98)
[   47.251792]  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)
[   47.251815]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   47.251845] RIP: 0033:0x4c2d9e
[   47.251867] Code: Unable to access opcode bytes at 0x4c2d74.

Code starting with the faulting instruction
===========================================
[   47.251901] RSP: 002b:00007ffce033e280 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.251949] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   47.251989] RDX: 0000000000000014 RSI: 00007ffce033e360 RDI: 0000000000000007
[   47.252031] RBP: 00007ffce033e290 R08: 00007ffce033e320 R09: 000000000000000c
[   47.252072] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000094de080
[   47.252114] R13: 00007ffce033eea8 R14: 00007ffce033e450 R15: 0000000000543540
| [   47.257781] ------------[ cut here ]------------
| [   47.257815] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: 0/12
| [   47.257876] Modules linked in:
| [   47.257953] Tainted: [W]=WARN
[   47.257971] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.257999] Workqueue: netns cleanup_net
[   47.258026] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   47.258056] 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
[   47.258158] RSP: 0018:ff8b85e240067c78 EFLAGS: 00010286
[   47.258182] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.258223] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff438ea58308c600
[   47.258264] RBP: 0000000000000000 R08: ff438ea5832c5dd0 R09: ff438ea582d4c82c
[   47.258305] R10: ff438ea583017118 R11: fefefefefefefeff R12: 0000000000000000
[   47.258351] R13: 0000000000000011 R14: ff438ea583017000 R15: ff438ea58308c600
[   47.258404] FS:  0000000000000000(0000) GS:ff438ea603e16000(0000) knlGS:0000000000000000
[   47.258446] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.258481] CR2: 000055557cb68340 CR3: 0000000002ec7005 CR4: 0000000000771ef0
[   47.258522] PKRU: 55555554
[   47.258537] Call Trace:
[   47.258550]  <TASK>
[   47.258565]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   47.258598]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   47.258638]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   47.258668]  cleanup_net (net/core/net_namespace.c:702)
[   47.258692]  process_one_work (kernel/workqueue.c:3314)
[   47.258718]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   47.258739]  ? rescuer_thread (kernel/workqueue.c:3672)
[   47.258759]  kthread (kernel/kthread.c:436)
[   47.258780]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   47.258803]  ret_from_fork (arch/x86/kernel/process.c:158)
[   47.258827]  ? 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