======================================
| xx__-> [    2.333610] ------------[ cut here ]------------
| [    2.333668] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: ip/167
| [    2.333732] Modules linked in:
| [    2.333820] Tainted: [W]=WARN
[    2.333845] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.333878] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.333911] 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 e6 ab 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 e6 ab fb ff       	call   0xfffffffffffbac22
  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 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.334011] RSP: 0018:ff3f5260003dfcc0 EFLAGS: 00010286
[    2.334036] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.334074] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2ccbca82b1bf00
[    2.334118] RBP: 0000000000000000 R08: ff2ccbca82b4b050 R09: ff2ccbca819bc02c
[    2.334157] R10: ff2ccbca819bf120 R11: fefefefefefefeff R12: 0000000000000000
[    2.334207] R13: 0000000000000010 R14: ff2ccbca819bf000 R15: ff2ccbca82b1bf00
[    2.334253] FS:  00007f8cfb539840(0000) GS:ff2ccbcb3708c000(0000) knlGS:0000000000000000
[    2.334295] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.334327] CR2: 0000000000479648 CR3: 0000000004d2d002 CR4: 0000000000771ef0
[    2.334372] PKRU: 55555554
[    2.334386] Call Trace:
[    2.334403]  <TASK>
[    2.334419]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.334441]  register_netdevice (net/core/dev.c:11488)
[    2.334468]  register_netdev (net/core/dev.c:11552)
[    2.334490]  loopback_net_init (drivers/net/loopback.c:218)
[    2.334516]  ? vsock_sysctl_init_net (net/vmw_vsock/af_vsock.c:2933 net/vmw_vsock/af_vsock.c:2973)
[    2.334549]  ops_init (net/core/net_namespace.c:137)
[    2.334573]  setup_net (net/core/net_namespace.c:446)
[    2.334594]  copy_net_ns (net/core/net_namespace.c:579)
[    2.334617]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.334649]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.334678]  ksys_unshare (kernel/fork.c:3243)
[    2.334704]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.334723]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.334749]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    2.334770]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.334795] RIP: 0033:0x7f8cfb7fbbcb
[    2.334820] 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
[    2.334914] RSP: 002b:00007ffe7d22bde8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[    2.334949] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f8cfb7fbbcb
[    2.334998] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    2.335041] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[    2.335081] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe7d22e010
[    2.335121] R13: 0000000000000001 R14: 00007f8cfb5396f8 R15: 00007ffe7d22e886
| [    2.338261] ------------[ cut here ]------------
| [    2.338294] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: ip/168
| [    2.338346] Modules linked in:
| [    2.338432] Tainted: [W]=WARN
[    2.338458] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.338489] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.338520] 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 e6 ab 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 e6 ab fb ff       	call   0xfffffffffffbac22
  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 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.338628] RSP: 0018:ff3f5260003e7720 EFLAGS: 00010286
[    2.338657] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.338700] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2ccbca82af1100
[    2.338743] RBP: 0000000000000000 R08: ff2ccbca82b4b050 R09: ff2ccbca82f7702c
[    2.338784] R10: ff2ccbca819bf120 R11: fefefefefefefeff R12: 0000000000000000
[    2.338835] R13: 0000000000000010 R14: ff2ccbca819bf000 R15: ff2ccbca82af1100
[    2.338872] FS:  00007f8814595840(0000) GS:ff2ccbcb3720c000(0000) knlGS:0000000000000000
[    2.338918] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.338954] CR2: 000000002fefb988 CR3: 0000000004e77005 CR4: 0000000000771ef0
[    2.338998] PKRU: 55555554
[    2.339013] Call Trace:
[    2.339027]  <TASK>
[    2.339047]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.339077]  __dev_notify_flags (net/core/dev.c:9787)
[    2.339099]  ? rtnl_getlink (./include/linux/skbuff.h:1323 ./include/linux/skbuff.h:1332 net/core/rtnetlink.c:4288)
[    2.339121]  netif_change_flags (net/core/dev.c:9820)
[    2.339143]  do_setlink.isra.0 (net/core/rtnetlink.c:3206 (discriminator 1))
[    2.339171]  ? __nla_validate_parse (lib/nlattr.c:620)
[    2.339203]  rtnl_newlink (net/core/rtnetlink.c:3840 (discriminator 1) net/core/rtnetlink.c:4013 (discriminator 1) net/core/rtnetlink.c:4150 (discriminator 1))
[    2.339226]  ? kmalloc_reserve (net/core/skbuff.c:613 (discriminator 7))
[    2.339247]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3455)
[    2.339276]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7061)
[    2.339298]  ? netlink_unicast (net/netlink/af_netlink.c:1270 net/netlink/af_netlink.c:1360)
[    2.339323]  ? rtnl_calcit.isra.0 (./include/net/netlink.h:1734 (discriminator 1))
[    2.339355]  netlink_rcv_skb (net/netlink/af_netlink.c:2551)
[    2.339377]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[    2.339399]  netlink_sendmsg (net/netlink/af_netlink.c:1895)
[    2.339421]  ____sys_sendmsg (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2698 (discriminator 4))
[    2.339443]  ___sys_sendmsg (net/socket.c:2752)
[    2.339468]  __sys_sendmsg (net/socket.c:2784)
[    2.339491]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.339512]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    2.339533]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.339561] RIP: 0033:0x7f88147cf08e
[    2.339583] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 94 bd 00 00       	call   0xbd9c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[    2.339674] RSP: 002b:00007ffd3713e620 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[    2.339711] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88147cf08e
[    2.339753] RDX: 0000000000000000 RSI: 00007ffd3713e6d0 RDI: 0000000000000005
[    2.339799] RBP: 00007ffd3713e630 R08: 0000000000000000 R09: 0000000000000000
[    2.339844] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a10da25
[    2.339886] R13: 000000000049f620 R14: 0000000000000000 R15: 00007ffd3713eda0
| [   12.038101] ------------[ cut here ]------------
| [   12.038161] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/65
| [   12.038225] Modules linked in: nf_conntrack_netlink nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_numgen nf_tables
| [   12.038353] Tainted: [W]=WARN
[   12.038375] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.038407] Workqueue: netns cleanup_net
[   12.038432] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   12.038462] 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 e6 ab 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 e6 ab fb ff       	call   0xfffffffffffbac22
  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 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   12.038561] RSP: 0018:ff3f52600023fc08 EFLAGS: 00010286
[   12.038588] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   12.038632] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2ccbca82b1bf00
[   12.038674] RBP: 0000000000000000 R08: ff2ccbca82b4b050 R09: ff2ccbca84ec502c
[   12.038714] R10: ff2ccbca819bf120 R11: fefefefefefefeff R12: 0000000000000000
[   12.038760] R13: 0000000000000010 R14: ff2ccbca819bf000 R15: ff2ccbca82b1bf00
[   12.038814] FS:  0000000000000000(0000) GS:ff2ccbcb3708c000(0000) knlGS:0000000000000000
[   12.038866] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.038907] CR2: 00007f0e8b952574 CR3: 000000003b242003 CR4: 0000000000771ef0
[   12.038958] PKRU: 55555554
[   12.038973] Call Trace:
[   12.038987]  <TASK>
[   12.039003]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   12.039025]  netif_close_many (net/core/dev.c:1804)
[   12.039050]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   12.039081]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   12.039110]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   12.039131]  cleanup_net (net/core/net_namespace.c:702)
[   12.039149]  process_one_work (kernel/workqueue.c:3314)
[   12.039175]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   12.039200]  ? rescuer_thread (kernel/workqueue.c:3672)
[   12.039223]  kthread (kernel/kthread.c:436)
[   12.039250]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   12.039273]  ret_from_fork (arch/x86/kernel/process.c:158)
[   12.039297]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   12.039318]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   12.039460] ------------[ cut here ]------------
| [   12.039486] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/65
| [   12.039543] Modules linked in: nf_conntrack_netlink nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_numgen nf_tables
| [   12.039672] Tainted: [W]=WARN
[   12.039693] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.039729] Workqueue: netns cleanup_net
[   12.039752] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   12.039782] 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 e6 ab 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 e6 ab fb ff       	call   0xfffffffffffbac22
  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 e6 ab fb ff       	call   0xfffffffffffbabf8
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   12.039886] RSP: 0018:ff3f52600023fc78 EFLAGS: 00010286
[   12.039911] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   12.039953] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2ccbca82b1bf00
[   12.039997] RBP: 0000000000000000 R08: ff2ccbca82b4b050 R09: ff2ccbca84c0882c
[   12.040040] R10: ff2ccbca819bf120 R11: fefefefefefefeff R12: 0000000000000000
[   12.040084] R13: 0000000000000011 R14: ff2ccbca819bf000 R15: ff2ccbca82b1bf00
[   12.040127] FS:  0000000000000000(0000) GS:ff2ccbcb3708c000(0000) knlGS:0000000000000000
[   12.040176] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.040214] CR2: 00007f0e8b952574 CR3: 000000003b242003 CR4: 0000000000771ef0
[   12.040259] PKRU: 55555554
[   12.040273] Call Trace:
[   12.040289]  <TASK>
[   12.040302]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   12.040331]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   12.040366]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   12.040392]  cleanup_net (net/core/net_namespace.c:702)
[   12.040415]  process_one_work (kernel/workqueue.c:3314)
[   12.040437]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   12.040460]  ? rescuer_thread (kernel/workqueue.c:3672)
[   12.040480]  kthread (kernel/kthread.c:436)
[   12.040501]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   12.040523]  ret_from_fork (arch/x86/kernel/process.c:158)
[   12.040546]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))


Finger prints:
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:default_device_exit_batch:ops_undo_list:cleanup_net
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:netif_close_many:unregister_netdevice_many_notify:default_device_exit_batch
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:register_netdev:loopback_net_init
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:__dev_notify_flags:netif_change_flags:rtnl_newlink