======================================
| xx__-> [    2.464149] ------------[ cut here ]------------
| [    2.464242] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: ip/179
| [    2.464332] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
| [    2.464500] Tainted: [W]=WARN
[    2.464556] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.464626] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.464693] 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
[    2.464823] RSP: 0018:ff7ae526402f3cc0 EFLAGS: 00010286
[    2.464889] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.464966] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2011e4032ae000
[    2.465042] RBP: 0000000000000000 R08: ff2011e403321390 R09: ff2011e404d7402c
[    2.465128] R10: ff2011e404d77120 R11: fefefefefefefeff R12: 0000000000000000
[    2.465213] R13: 0000000000000010 R14: ff2011e404d77000 R15: ff2011e4032ae000
[    2.465295] FS:  00007f579ddba840(0000) GS:ff2011e4ad38c000(0000) knlGS:0000000000000000
[    2.465375] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.465445] CR2: 0000000000479648 CR3: 0000000004dc4006 CR4: 0000000000771ef0
[    2.465524] PKRU: 55555554
[    2.465572] Call Trace:
[    2.465623]  <TASK>
[    2.465672]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.465730]  register_netdevice (net/core/dev.c:11488)
[    2.465789]  register_netdev (net/core/dev.c:11552)
[    2.465847]  loopback_net_init (drivers/net/loopback.c:218)
[    2.465907]  ops_init (net/core/net_namespace.c:137)
[    2.465968]  setup_net (net/core/net_namespace.c:446)
[    2.466026]  copy_net_ns (net/core/net_namespace.c:579)
[    2.466083]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.466167]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.466232]  ksys_unshare (kernel/fork.c:3243)
[    2.466292]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.466350]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.466410]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    2.466468]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.466533] RIP: 0033:0x7f579e07cbcb
[    2.466590] 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
[    2.466724] RSP: 002b:00007ffd952e9398 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
[    2.466801] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f579e07cbcb
[    2.466879] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    2.466957] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[    2.467034] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd952eb5c0
[    2.467116] R13: 0000000000000001 R14: 00007f579ddba6f8 R15: 00007ffd952ed87c
| [    2.470359] ------------[ cut here ]------------
| [    2.470391] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: ip/180
| [    2.470446] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
| [    2.470549] Tainted: [W]=WARN
[    2.470572] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.470615] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.470650] 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
[    2.470749] RSP: 0018:ff7ae5264035f720 EFLAGS: 00010286
[    2.470778] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.470822] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2011e401e67100
[    2.470865] RBP: 0000000000000000 R08: ff2011e403321390 R09: ff2011e402f3702c
[    2.470910] R10: ff2011e404d77120 R11: fefefefefefefeff R12: 0000000000000000
[    2.470955] R13: 0000000000000010 R14: ff2011e404d77000 R15: ff2011e401e67100
[    2.471001] FS:  00007f33fc6fe840(0000) GS:ff2011e4ad28c000(0000) knlGS:0000000000000000
[    2.471047] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.471077] CR2: 000000001c184988 CR3: 0000000004cb3003 CR4: 0000000000771ef0
[    2.471125] PKRU: 55555554
[    2.471142] Call Trace:
[    2.471155]  <TASK>
[    2.471174]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.471199]  __dev_notify_flags (net/core/dev.c:9787)
[    2.471223]  ? rtnl_getlink (./include/linux/skbuff.h:1323 ./include/linux/skbuff.h:1332 net/core/rtnetlink.c:4288)
[    2.471247]  netif_change_flags (net/core/dev.c:9820)
[    2.471270]  do_setlink.isra.0 (net/core/rtnetlink.c:3206 (discriminator 1))
[    2.471295]  ? __nla_validate_parse (lib/nlattr.c:620)
[    2.471322]  rtnl_newlink (net/core/rtnetlink.c:3840 (discriminator 1) net/core/rtnetlink.c:4013 (discriminator 1) net/core/rtnetlink.c:4150 (discriminator 1))
[    2.471347]  ? kmalloc_reserve (net/core/skbuff.c:613 (discriminator 7))
[    2.471372]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3455)
[    2.471400]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7061)
[    2.471423]  ? netlink_unicast (net/netlink/af_netlink.c:1270 net/netlink/af_netlink.c:1360)
[    2.471444]  ? rtnl_calcit.isra.0 (./include/net/netlink.h:1734 (discriminator 1))
[    2.471472]  netlink_rcv_skb (net/netlink/af_netlink.c:2551)
[    2.471493]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[    2.471515]  netlink_sendmsg (net/netlink/af_netlink.c:1895)
[    2.471540]  ____sys_sendmsg (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2698 (discriminator 4))
[    2.471563]  ___sys_sendmsg (net/socket.c:2752)
[    2.471586]  __sys_sendmsg (net/socket.c:2784)
[    2.471611]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.471633]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    2.471657]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.471684] RIP: 0033:0x7f33fc93808e
[    2.471707] 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
[    2.471811] RSP: 002b:00007ffebd26dce0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[    2.471851] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f33fc93808e
[    2.471899] RDX: 0000000000000000 RSI: 00007ffebd26dd90 RDI: 0000000000000005
[    2.471941] RBP: 00007ffebd26dcf0 R08: 0000000000000000 R09: 0000000000000000
[    2.471984] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a10d37c
[    2.472024] R13: 000000000049f620 R14: 0000000000000000 R15: 00007ffebd26e460
| [    2.484249] ------------[ cut here ]------------
| [    2.484284] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: ip/184
| [    2.484327] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
| [    2.484427] Tainted: [W]=WARN
[    2.484448] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.484485] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.484514] 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
[    2.484609] RSP: 0018:ff7ae526403cfcc0 EFLAGS: 00010286
[    2.484641] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.484684] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2011e401e67100
[    2.484727] RBP: 0000000000000000 R08: ff2011e4030d4fd0 R09: ff2011e407a5102c
[    2.484769] R10: ff2011e404d84120 R11: fefefefefefefeff R12: 0000000000000000
[    2.484803] R13: 0000000000000010 R14: ff2011e404d84000 R15: ff2011e401e67100
[    2.484850] FS:  00007f9e86600840(0000) GS:ff2011e4ad28c000(0000) knlGS:0000000000000000
[    2.484884] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.484917] CR2: 00007f9e86807430 CR3: 00000000033e2003 CR4: 0000000000771ef0
[    2.484961] PKRU: 55555554
[    2.484975] Call Trace:
[    2.484992]  <TASK>
[    2.485007]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.485027]  register_netdevice (net/core/dev.c:11488)
[    2.485049]  register_netdev (net/core/dev.c:11552)
[    2.485071]  loopback_net_init (drivers/net/loopback.c:218)
[    2.485100]  ops_init (net/core/net_namespace.c:137)
[    2.485124]  setup_net (net/core/net_namespace.c:446)
[    2.485147]  copy_net_ns (net/core/net_namespace.c:579)
[    2.485171]  create_new_namespaces (kernel/nsproxy.c:132)
[    2.485198]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    2.485231]  ksys_unshare (kernel/fork.c:3243)
[    2.485255]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    2.485277]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.485300]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    2.485322]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.485350] RIP: 0033:0x7f9e868c2bcb
[    2.485377] 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
[    2.485476] RSP: 002b:00007ffdb28fdc38 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
[    2.485516] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f9e868c2bcb
[    2.485557] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    2.485596] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
[    2.485639] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffdb28ffe60
[    2.485685] R13: 0000000000000001 R14: 0000000000000003 R15: 00007ffdb290187c
| [    2.488917] ------------[ cut here ]------------
| [    2.488960] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: ip/185
| [    2.489012] Modules linked in: nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
| [    2.489123] Tainted: [W]=WARN
[    2.489148] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.489189] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.489217] 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
[    2.489315] RSP: 0018:ff7ae5264046f720 EFLAGS: 00010286
[    2.489345] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.489387] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2011e4018f2c00
[    2.489430] RBP: 0000000000000000 R08: ff2011e4030d4fd0 R09: ff2011e4032bf02c
[    2.489474] R10: ff2011e404d84120 R11: fefefefefefefeff R12: 0000000000000000
[    2.489513] R13: 0000000000000010 R14: ff2011e404d84000 R15: ff2011e4018f2c00
[    2.489559] FS:  00007f1839fdf840(0000) GS:ff2011e4ad40c000(0000) knlGS:0000000000000000
[    2.489605] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.489642] CR2: 0000000005071988 CR3: 0000000007a12002 CR4: 0000000000771ef0
[    2.489687] PKRU: 55555554
[    2.489704] Call Trace:
[    2.489718]  <TASK>
[    2.489731]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.489753]  __dev_notify_flags (net/core/dev.c:9787)
[    2.489780]  ? rtnl_getlink (./include/linux/skbuff.h:1323 ./include/linux/skbuff.h:1332 net/core/rtnetlink.c:4288)
[    2.489803]  netif_change_flags (net/core/dev.c:9820)
[    2.489854]  do_setlink.isra.0 (net/core/rtnetlink.c:3206 (discriminator 1))
[    2.489879]  ? __nla_validate_parse (lib/nlattr.c:620)
[    2.489910]  rtnl_newlink (net/core/rtnetlink.c:3840 (discriminator 1) net/core/rtnetlink.c:4013 (discriminator 1) net/core/rtnetlink.c:4150 (discriminator 1))
[    2.489933]  ? kmalloc_reserve (net/core/skbuff.c:613 (discriminator 7))
[    2.489958]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3455)
[    2.489987]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7061)
[    2.490006]  ? netlink_unicast (net/netlink/af_netlink.c:1270 net/netlink/af_netlink.c:1360)
[    2.490028]  ? rtnl_calcit.isra.0 (./include/net/netlink.h:1734 (discriminator 1))
[    2.490055]  netlink_rcv_skb (net/netlink/af_netlink.c:2551)
[    2.490079]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[    2.490100]  netlink_sendmsg (net/netlink/af_netlink.c:1895)
[    2.490122]  ____sys_sendmsg (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2698 (discriminator 4))
[    2.490145]  ___sys_sendmsg (net/socket.c:2752)
[    2.490169]  __sys_sendmsg (net/socket.c:2784)
[    2.490190]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.490214]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    2.490235]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.490263] RIP: 0033:0x7f183a21908e
[    2.490286] 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
[    2.490379] RSP: 002b:00007fff34fb0290 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[    2.490424] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f183a21908e
[    2.490468] RDX: 0000000000000000 RSI: 00007fff34fb0340 RDI: 0000000000000005
[    2.490510] RBP: 00007fff34fb02a0 R08: 0000000000000000 R09: 0000000000000000
[    2.490550] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a10d37c
[    2.490588] R13: 000000000049f620 R14: 0000000000000000 R15: 00007fff34fb0a10
| [   43.982027] ------------[ cut here ]------------
| [   43.982077] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/66
| [   43.982148] Modules linked in: nf_conntrack_netlink nft_ct nf_tables nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
| [   43.982275] Tainted: [W]=WARN
[   43.982299] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   43.982335] Workqueue: netns cleanup_net
[   43.982361] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   43.982392] 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
[   43.982490] RSP: 0018:ff7ae52640247c08 EFLAGS: 00010286
[   43.982520] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   43.982561] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2011e4018e7800
[   43.982602] RBP: 0000000000000000 R08: ff2011e403321390 R09: ff2011e407a5702c
[   43.982646] R10: ff2011e404d77120 R11: fefefefefefefeff R12: 0000000000000000
[   43.982687] R13: 0000000000000010 R14: ff2011e404d77000 R15: ff2011e4018e7800
[   43.982732] FS:  0000000000000000(0000) GS:ff2011e4ad28c000(0000) knlGS:0000000000000000
[   43.982783] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   43.982820] CR2: 00007f513da96430 CR3: 000000000aeb2002 CR4: 0000000000771ef0
[   43.982865] PKRU: 55555554
[   43.982879] Call Trace:
[   43.982896]  <TASK>
[   43.982911]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   43.982936]  netif_close_many (net/core/dev.c:1804)
[   43.982957]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   43.982988]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   43.983018]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   43.983039]  cleanup_net (net/core/net_namespace.c:702)
[   43.983062]  process_one_work (kernel/workqueue.c:3314)
[   43.983088]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   43.983109]  ? rescuer_thread (kernel/workqueue.c:3672)
[   43.983134]  kthread (kernel/kthread.c:436)
[   43.983162]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   43.983192]  ret_from_fork (arch/x86/kernel/process.c:158)
[   43.983218]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   43.983242]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   43.983469] ------------[ cut here ]------------
| [   43.983498] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/66
| [   43.983546] Modules linked in: nf_conntrack_netlink nft_ct nf_tables nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
| [   43.983667] Tainted: [W]=WARN
[   43.983689] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   43.983727] Workqueue: netns cleanup_net
[   43.983752] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   43.983780] 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
[   43.983880] RSP: 0018:ff7ae52640247c78 EFLAGS: 00010286
[   43.983910] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   43.983958] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2011e4018e7800
[   43.984000] RBP: 0000000000000000 R08: ff2011e403321390 R09: ff2011e404d7982c
[   43.984044] R10: ff2011e404d77120 R11: fefefefefefefeff R12: 0000000000000000
[   43.984090] R13: 0000000000000011 R14: ff2011e404d77000 R15: ff2011e4018e7800
[   43.984137] FS:  0000000000000000(0000) GS:ff2011e4ad28c000(0000) knlGS:0000000000000000
[   43.984188] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   43.984222] CR2: 00007f513db1a2a0 CR3: 0000000030e42005 CR4: 0000000000771ef0
[   43.984272] PKRU: 55555554
[   43.984287] Call Trace:
[   43.984301]  <TASK>
[   43.984318]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   43.984348]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   43.984379]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   43.984402]  cleanup_net (net/core/net_namespace.c:702)
[   43.984426]  process_one_work (kernel/workqueue.c:3314)
[   43.984451]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   43.984471]  ? rescuer_thread (kernel/workqueue.c:3672)
[   43.984490]  kthread (kernel/kthread.c:436)
[   43.984512]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   43.984532]  ret_from_fork (arch/x86/kernel/process.c:158)
[   43.984556]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   43.984578]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   44.004201] ------------[ cut here ]------------
| [   44.004246] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/66
| [   44.004312] Modules linked in: nf_conntrack_netlink nft_ct nf_tables nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
| [   44.004436] Tainted: [W]=WARN
[   44.004459] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   44.004494] Workqueue: netns cleanup_net
[   44.004517] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   44.004548] 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
[   44.004645] RSP: 0018:ff7ae52640247c08 EFLAGS: 00010286
[   44.004677] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   44.004719] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2011e4018e7800
[   44.004768] RBP: 0000000000000000 R08: ff2011e4030d4fd0 R09: ff2011e402d3602c
[   44.004805] R10: ff2011e404d84120 R11: fefefefefefefeff R12: 0000000000000000
[   44.004845] R13: 0000000000000010 R14: ff2011e404d84000 R15: ff2011e4018e7800
[   44.004894] FS:  0000000000000000(0000) GS:ff2011e4ad28c000(0000) knlGS:0000000000000000
[   44.004937] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   44.004966] CR2: 00007fc6f0616668 CR3: 0000000009122003 CR4: 0000000000771ef0
[   44.005013] PKRU: 55555554
[   44.005026] Call Trace:
[   44.005037]  <TASK>
[   44.005052]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[   44.005076]  netif_close_many (net/core/dev.c:1804)
[   44.005098]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   44.005127]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   44.005162]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   44.005188]  cleanup_net (net/core/net_namespace.c:702)
[   44.005211]  process_one_work (kernel/workqueue.c:3314)
[   44.005233]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   44.005253]  ? rescuer_thread (kernel/workqueue.c:3672)
[   44.005278]  kthread (kernel/kthread.c:436)
[   44.005301]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   44.005325]  ret_from_fork (arch/x86/kernel/process.c:158)
[   44.005346]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   44.005369]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   44.005484] ------------[ cut here ]------------
| [   44.005517] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: 1/66
| [   44.005578] Modules linked in: nf_conntrack_netlink nft_ct nf_tables nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
| [   44.005703] Tainted: [W]=WARN
[   44.005730] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   44.005766] Workqueue: netns cleanup_net
[   44.005793] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   44.005823] 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
[   44.005915] RSP: 0018:ff7ae52640247c78 EFLAGS: 00010286
[   44.005945] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   44.005991] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2011e4018e7800
[   44.006034] RBP: 0000000000000000 R08: ff2011e4030d4fd0 R09: ff2011e404e2c02c
[   44.006076] R10: ff2011e404d84120 R11: fefefefefefefeff R12: 0000000000000000
[   44.006123] R13: 0000000000000011 R14: ff2011e404d84000 R15: ff2011e4018e7800
[   44.006172] FS:  0000000000000000(0000) GS:ff2011e4ad28c000(0000) knlGS:0000000000000000
[   44.006216] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   44.006254] CR2: 00007fc6f0616668 CR3: 0000000009122003 CR4: 0000000000771ef0
[   44.006300] PKRU: 55555554
[   44.006315] Call Trace:
[   44.006328]  <TASK>
[   44.006343]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   44.006369]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   44.006399]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   44.006420]  cleanup_net (net/core/net_namespace.c:702)
[   44.006443]  process_one_work (kernel/workqueue.c:3314)
[   44.006465]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   44.006484]  ? rescuer_thread (kernel/workqueue.c:3672)
[   44.006505]  kthread (kernel/kthread.c:436)
[   44.006525]  ? kthread_park (kernel/kthread.c:725 (discriminator 4))
[   44.006547]  ret_from_fork (arch/x86/kernel/process.c:158)
[   44.006570]  ? 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