======================================
| xx__-> [    9.703563][  T198] ------------[ cut here ]------------
| [    9.703840][  T198] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: ip/198
| [    9.704130][  T198] Modules linked in:
| [    9.704666][  T198] Tainted: [W]=WARN
[    9.704818][  T198] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.705039][  T198] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.705348][  T198] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.705902][  T198] RSP: 0018:ffa0000000927a80 EFLAGS: 00010286
[    9.706122][  T198] RAX: 00000000ffffffa6 RBX: ff1100000529fa80 RCX: 1ff4000000124f16
[    9.706386][  T198] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000529fb3c
[    9.706642][  T198] RBP: ff11000008e6c000 R08: 1fe2200000a53f69 R09: ff110000102e8b80
[    9.706892][  T198] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[    9.707139][  T198] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000008e6c000
[    9.707470][  T198] FS:  00007fbcac49e840(0000) GS:ff110000ce7c7000(0000) knlGS:0000000000000000
[    9.707765][  T198] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.707986][  T198] CR2: 0000000000479648 CR3: 000000000ef50001 CR4: 0000000000771ef0
[    9.708248][  T198] PKRU: 55555554
[    9.708399][  T198] Call Trace:
[    9.708548][  T198]  <TASK>
[    9.708674][  T198]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.708862][  T198]  ? notifier_call_chain (kernel/notifier.c:85)
[    9.709047][  T198]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.709211][  T198]  register_netdevice (net/core/dev.c:11488)
[    9.709405][  T198]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.709632][  T198]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[    9.709817][  T198]  register_netdev (net/core/dev.c:11552)
[    9.710002][  T198]  loopback_net_init (drivers/net/loopback.c:218)
[    9.710200][  T198]  ops_init (net/core/net_namespace.c:137)
[    9.710354][  T198]  setup_net (net/core/net_namespace.c:446)
[    9.710504][  T198]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[    9.710699][  T198]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[    9.710885][  T198]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[    9.711074][  T198]  copy_net_ns (net/core/net_namespace.c:579)
[    9.711273][  T198]  create_new_namespaces (kernel/nsproxy.c:132)
[    9.711460][  T198]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    9.711648][  T198]  ksys_unshare (kernel/fork.c:3243)
[    9.711834][  T198]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[    9.712022][  T198]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[    9.712221][  T198]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[    9.712409][  T198]  ? __ia32_sys_open (fs/open.c:1374)
[    9.712601][  T198]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    9.712786][  T198]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[    9.712970][  T198]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.713153][  T198]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.713352][  T198]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.713539][  T198]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.713765][  T198] RIP: 0033:0x7fbcac760bcb
[    9.713955][  T198] 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
[    9.714496][  T198] RSP: 002b:00007ffe29f782e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[    9.714755][  T198] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbcac760bcb
[    9.715002][  T198] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    9.715262][  T198] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[    9.715513][  T198] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe29f7a510
[    9.715768][  T198] R13: 0000000000000001 R14: 00007fbcac49e6f8 R15: 00007ffe29f7a890
| [    9.726187][  T198] ------------[ cut here ]------------
| [    9.726388][  T198] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: ip/198
| [    9.726677][  T198] Modules linked in:
| [    9.727226][  T198] Tainted: [W]=WARN
[    9.727375][  T198] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.727692][  T198] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.727921][  T198] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.729093][  T198] RSP: 0018:ffa0000000927918 EFLAGS: 00010286
[    9.729383][  T198] RAX: 00000000ffffffa6 RBX: ff1100000d502900 RCX: 1ff4000000124ee9
[    9.729691][  T198] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000d5029bc
[    9.729993][  T198] RBP: ff1100000f344000 R08: 1fe2200001aa0539 R09: ff110000102e8b80
[    9.730304][  T198] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[    9.730673][  T198] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000f344000
[    9.730977][  T198] FS:  00007fbcac49e840(0000) GS:ff110000ce7c7000(0000) knlGS:0000000000000000
[    9.731327][  T198] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.731603][  T198] CR2: 0000000000479648 CR3: 000000000ef50001 CR4: 0000000000771ef0
[    9.731906][  T198] PKRU: 55555554
[    9.732108][  T198] Call Trace:
[    9.732322][  T198]  <TASK>
[    9.732492][  T198]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.732735][  T198]  ? notifier_call_chain (kernel/notifier.c:85)
[    9.732973][  T198]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.733191][  T198]  register_netdevice (net/core/dev.c:11488)
[    9.733424][  T198]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.733694][  T198]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[    9.733931][  T198]  __ip_tunnel_create (net/ipv4/ip_tunnel.c:268)
[    9.734166][  T198]  ? ip_tunnel_encap_del_ops (net/ipv4/ip_tunnel.c:479 (discriminator 1))
[    9.734457][  T198]  ? net_generic (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2))
[    9.734702][  T198]  ip_tunnel_init_net (net/ipv4/ip_tunnel.c:1147)
[    9.734934][  T198]  ? ip_tunnel_ctl (net/ipv4/ip_tunnel.c:952)
[    9.735204][  T198]  ? __kmalloc_noprof (mm/slub.c:5296 mm/slub.c:5307)
[    9.735386][  T198]  ops_init (net/core/net_namespace.c:137)
[    9.735538][  T198]  setup_net (net/core/net_namespace.c:446)
[    9.735692][  T198]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[    9.735872][  T198]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[    9.736055][  T198]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[    9.736255][  T198]  copy_net_ns (net/core/net_namespace.c:579)
[    9.736438][  T198]  create_new_namespaces (kernel/nsproxy.c:132)
[    9.736629][  T198]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    9.736811][  T198]  ksys_unshare (kernel/fork.c:3243)
[    9.736992][  T198]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[    9.737186][  T198]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[    9.737370][  T198]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[    9.737552][  T198]  ? __ia32_sys_open (fs/open.c:1374)
[    9.737741][  T198]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    9.737921][  T198]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[    9.738102][  T198]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.738293][  T198]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.738475][  T198]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.738663][  T198]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.738881][  T198] RIP: 0033:0x7fbcac760bcb
[    9.739067][  T198] 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
[    9.739602][  T198] RSP: 002b:00007ffe29f782e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[    9.739852][  T198] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbcac760bcb
[    9.740100][  T198] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    9.740356][  T198] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[    9.740609][  T198] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe29f7a510
[    9.740855][  T198] R13: 0000000000000001 R14: 00007fbcac49e6f8 R15: 00007ffe29f7a890
| [    9.745457][  T198] ------------[ cut here ]------------
| [    9.745649][  T198] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: ip/198
| [    9.745936][  T198] Modules linked in:
| [    9.746423][  T198] Tainted: [W]=WARN
[    9.746580][  T198] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.746796][  T198] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.747021][  T198] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.748113][  T198] RSP: 0018:ffa00000009278f8 EFLAGS: 00010286
[    9.748407][  T198] RAX: 00000000ffffffa6 RBX: ff1100000b879700 RCX: 1ff4000000124ee5
[    9.748716][  T198] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b8797bc
[    9.749023][  T198] RBP: ff1100000952c000 R08: 1fe220000170f2f9 R09: ff110000102e8b80
[    9.749338][  T198] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[    9.749656][  T198] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000952c000
[    9.749963][  T198] FS:  00007fbcac49e840(0000) GS:ff110000ce7c7000(0000) knlGS:0000000000000000
[    9.750314][  T198] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.750592][  T198] CR2: 0000000000479648 CR3: 000000000ef50001 CR4: 0000000000771ef0
[    9.750900][  T198] PKRU: 55555554
[    9.751104][  T198] Call Trace:
[    9.751316][  T198]  <TASK>
[    9.751488][  T198]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.751735][  T198]  ? notifier_call_chain (kernel/notifier.c:85)
[    9.751978][  T198]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.752196][  T198]  register_netdevice (net/core/dev.c:11488)
[    9.752433][  T198]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.752715][  T198]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[    9.752953][  T198]  __ip_tunnel_create (net/ipv4/ip_tunnel.c:268)
[    9.753204][  T198]  ? ip_tunnel_encap_del_ops (net/ipv4/ip_tunnel.c:479 (discriminator 1))
[    9.753443][  T198]  ? net_generic (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2))
[    9.753692][  T198]  ip_tunnel_init_net (net/ipv4/ip_tunnel.c:1147)
[    9.753931][  T198]  ? ip_tunnel_ctl (net/ipv4/ip_tunnel.c:952)
[    9.754212][  T198]  ? trace_kmalloc (./include/trace/events/kmem.h:57 (discriminator 22))
[    9.754396][  T198]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[    9.754590][  T198]  vti_init_net (net/ipv4/ip_vti.c:517)
[    9.754777][  T198]  ops_init (net/core/net_namespace.c:137)
[    9.754929][  T198]  setup_net (net/core/net_namespace.c:446)
[    9.755078][  T198]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[    9.755274][  T198]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[    9.755459][  T198]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[    9.755648][  T198]  copy_net_ns (net/core/net_namespace.c:579)
[    9.755833][  T198]  create_new_namespaces (kernel/nsproxy.c:132)
[    9.756020][  T198]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    9.756220][  T198]  ksys_unshare (kernel/fork.c:3243)
[    9.756407][  T198]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[    9.756597][  T198]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[    9.756781][  T198]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[    9.756967][  T198]  ? __ia32_sys_open (fs/open.c:1374)
[    9.757154][  T198]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    9.757350][  T198]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[    9.757532][  T198]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.757718][  T198]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.757905][  T198]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.758089][  T198]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.758318][  T198] RIP: 0033:0x7fbcac760bcb
[    9.758507][  T198] 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
[    9.759044][  T198] RSP: 002b:00007ffe29f782e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[    9.759308][  T198] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbcac760bcb
[    9.759557][  T198] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    9.759812][  T198] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[    9.760063][  T198] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe29f7a510
[    9.760325][  T198] R13: 0000000000000001 R14: 00007fbcac49e6f8 R15: 00007ffe29f7a890
| [    9.765237][  T198] ------------[ cut here ]------------
| [    9.765428][  T198] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: ip/198
| [    9.765717][  T198] Modules linked in:
| [    9.766200][  T198] Tainted: [W]=WARN
[    9.766353][  T198] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.766565][  T198] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.766889][  T198] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.768072][  T198] RSP: 0018:ffa0000000927a78 EFLAGS: 00010286
[    9.768366][  T198] RAX: 00000000ffffffa6 RBX: ff1100000b878c80 RCX: 1ff4000000124f15
[    9.768671][  T198] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b878d3c
[    9.768990][  T198] RBP: ff1100000f2a4000 R08: 1fe220000170f1a9 R09: ff110000102e8b80
[    9.769301][  T198] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[    9.769621][  T198] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000f2a4000
[    9.769924][  T198] FS:  00007fbcac49e840(0000) GS:ff110000ce7c7000(0000) knlGS:0000000000000000
[    9.770291][  T198] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.770560][  T198] CR2: 0000000000479648 CR3: 000000000ef50001 CR4: 0000000000771ef0
[    9.770873][  T198] PKRU: 55555554
[    9.771074][  T198] Call Trace:
[    9.771288][  T198]  <TASK>
[    9.771458][  T198]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.771700][  T198]  ? notifier_call_chain (kernel/notifier.c:85)
[    9.771954][  T198]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.772158][  T198]  register_netdevice (net/core/dev.c:11488)
[    9.772407][  T198]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.772686][  T198]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[    9.772927][  T198]  register_netdev (net/core/dev.c:11552)
[    9.773165][  T198]  vti6_init_net (net/ipv6/ip6_vti.c:1167)
[    9.773467][  T198]  ops_init (net/core/net_namespace.c:137)
[    9.773699][  T198]  setup_net (net/core/net_namespace.c:446)
[    9.773904][  T198]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[    9.774122][  T198]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[    9.774313][  T198]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[    9.774500][  T198]  copy_net_ns (net/core/net_namespace.c:579)
[    9.774694][  T198]  create_new_namespaces (kernel/nsproxy.c:132)
[    9.774880][  T198]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    9.775078][  T198]  ksys_unshare (kernel/fork.c:3243)
[    9.775272][  T198]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[    9.775453][  T198]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[    9.775645][  T198]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[    9.775828][  T198]  ? __ia32_sys_open (fs/open.c:1374)
[    9.776010][  T198]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    9.776222][  T198]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[    9.776404][  T198]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.776593][  T198]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.776775][  T198]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.776962][  T198]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.777191][  T198] RIP: 0033:0x7fbcac760bcb
[    9.777397][  T198] 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
[    9.777919][  T198] RSP: 002b:00007ffe29f782e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[    9.778166][  T198] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbcac760bcb
[    9.778444][  T198] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    9.778696][  T198] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[    9.778940][  T198] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe29f7a510
[    9.779197][  T198] R13: 0000000000000001 R14: 00007fbcac49e6f8 R15: 00007ffe29f7a890
| [    9.784219][  T198] ------------[ cut here ]------------
| [    9.784402][  T198] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: ip/198
| [    9.784691][  T198] Modules linked in:
| [    9.785153][  T198] Tainted: [W]=WARN
[    9.785314][  T198] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.785546][  T198] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.785774][  T198] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.786839][  T198] RSP: 0018:ffa0000000927a68 EFLAGS: 00010286
[    9.787133][  T198] RAX: 00000000ffffffa6 RBX: ff1100000d503540 RCX: 1ff4000000124f13
[    9.787441][  T198] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000d5035fc
[    9.787752][  T198] RBP: ff1100000f3c9000 R08: 1fe2200001aa06c1 R09: ff110000102e8b80
[    9.788046][  T198] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[    9.788384][  T198] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000f3c9000
[    9.788689][  T198] FS:  00007fbcac49e840(0000) GS:ff110000ce7c7000(0000) knlGS:0000000000000000
[    9.789024][  T198] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.789302][  T198] CR2: 0000000000479648 CR3: 000000000ef50001 CR4: 0000000000771ef0
[    9.789606][  T198] PKRU: 55555554
[    9.789821][  T198] Call Trace:
[    9.790019][  T198]  <TASK>
[    9.790202][  T198]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.790438][  T198]  ? notifier_call_chain (kernel/notifier.c:85)
[    9.790683][  T198]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.790886][  T198]  register_netdevice (net/core/dev.c:11488)
[    9.791121][  T198]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.791419][  T198]  register_netdev (net/core/dev.c:11552)
[    9.791659][  T198]  sit_init_net (net/ipv6/sit.c:1860)
[    9.791896][  T198]  ops_init (net/core/net_namespace.c:137)
[    9.792100][  T198]  setup_net (net/core/net_namespace.c:446)
[    9.792316][  T198]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[    9.792503][  T198]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[    9.792693][  T198]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[    9.792899][  T198]  copy_net_ns (net/core/net_namespace.c:579)
[    9.793082][  T198]  create_new_namespaces (kernel/nsproxy.c:132)
[    9.793280][  T198]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    9.793461][  T198]  ksys_unshare (kernel/fork.c:3243)
[    9.793654][  T198]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[    9.793839][  T198]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[    9.794019][  T198]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[    9.794233][  T198]  ? __ia32_sys_open (fs/open.c:1374)
[    9.794416][  T198]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    9.794603][  T198]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[    9.794785][  T198]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.794969][  T198]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.795152][  T198]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.795367][  T198]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.795586][  T198] RIP: 0033:0x7fbcac760bcb
[    9.795773][  T198] 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
[    9.796307][  T198] RSP: 002b:00007ffe29f782e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[    9.796577][  T198] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbcac760bcb
[    9.796824][  T198] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    9.797068][  T198] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[    9.797330][  T198] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe29f7a510
[    9.797600][  T198] R13: 0000000000000001 R14: 00007fbcac49e6f8 R15: 00007ffe29f7a890
| [    9.803132][  T198] ------------[ cut here ]------------
| [    9.803321][  T198] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: ip/198
| [    9.803623][  T198] Modules linked in:
| [    9.804088][  T198] Tainted: [W]=WARN
[    9.804762][  T198] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.805032][  T198] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.805339][  T198] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.805926][  T198] RSP: 0018:ffa0000000927a78 EFLAGS: 00010286
[    9.806212][  T198] RAX: 00000000ffffffa6 RBX: ff1100000bd06ac0 RCX: 1ff4000000124f15
[    9.806528][  T198] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000bd06b7c
[    9.806836][  T198] RBP: ff1100000f3ec000 R08: 1fe22000017a0d71 R09: ff110000102e8b80
[    9.807134][  T198] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[    9.807446][  T198] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000f3ec000
[    9.807756][  T198] FS:  00007fbcac49e840(0000) GS:ff110000ce7c7000(0000) knlGS:0000000000000000
[    9.808109][  T198] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.808391][  T198] CR2: 0000000000479648 CR3: 000000000ef50001 CR4: 0000000000771ef0
[    9.808701][  T198] PKRU: 55555554
[    9.808904][  T198] Call Trace:
[    9.809103][  T198]  <TASK>
[    9.809285][  T198]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.809538][  T198]  ? notifier_call_chain (kernel/notifier.c:85)
[    9.809780][  T198]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.809984][  T198]  register_netdevice (net/core/dev.c:11488)
[    9.810235][  T198]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.810502][  T198]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[    9.810745][  T198]  register_netdev (net/core/dev.c:11552)
[    9.810952][  T198]  ip6_tnl_init_net (net/ipv6/ip6_tunnel.c:2346)
[    9.811136][  T198]  ops_init (net/core/net_namespace.c:137)
[    9.811296][  T198]  setup_net (net/core/net_namespace.c:446)
[    9.811445][  T198]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[    9.811634][  T198]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[    9.811818][  T198]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[    9.812007][  T198]  copy_net_ns (net/core/net_namespace.c:579)
[    9.812219][  T198]  create_new_namespaces (kernel/nsproxy.c:132)
[    9.812403][  T198]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    9.812596][  T198]  ksys_unshare (kernel/fork.c:3243)
[    9.812778][  T198]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[    9.812958][  T198]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[    9.813140][  T198]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[    9.813338][  T198]  ? __ia32_sys_open (fs/open.c:1374)
[    9.813538][  T198]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    9.813724][  T198]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[    9.813905][  T198]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.814087][  T198]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.814281][  T198]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.814463][  T198]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.814696][  T198] RIP: 0033:0x7fbcac760bcb
[    9.814886][  T198] 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
[    9.815415][  T198] RSP: 002b:00007ffe29f782e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[    9.815671][  T198] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbcac760bcb
[    9.815938][  T198] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    9.816197][  T198] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[    9.816444][  T198] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe29f7a510
[    9.816696][  T198] R13: 0000000000000001 R14: 00007fbcac49e6f8 R15: 00007ffe29f7a890
| [    9.848657][  T199] ------------[ cut here ]------------
| [    9.848824][  T199] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: ip/199
| [    9.849060][  T199] Modules linked in:
| [    9.849801][  T199] Tainted: [W]=WARN
[    9.849905][  T199] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.850075][  T199] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.850256][  T199] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.850738][  T199] RSP: 0018:ffa0000000937020 EFLAGS: 00010286
[    9.850908][  T199] RAX: 00000000ffffffa6 RBX: ff1100000cf0be00 RCX: 1ff4000000126dca
[    9.851109][  T199] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000cf0bebc
[    9.851316][  T199] RBP: ff11000008e6c000 R08: 1fe22000019e17d9 R09: ff110000102eae58
[    9.851520][  T199] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000001
[    9.851727][  T199] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
[    9.851929][  T199] FS:  00007ffa18792840(0000) GS:ff110000ce847000(0000) knlGS:0000000000000000
[    9.852163][  T199] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.852336][  T199] CR2: 00007ffa18a621a0 CR3: 000000000dd3f003 CR4: 0000000000771ef0
[    9.852540][  T199] PKRU: 55555554
[    9.852644][  T199] Call Trace:
[    9.852745][  T199]  <TASK>
[    9.852816][  T199]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.852955][  T199]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.853058][  T199]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[    9.853199][  T199]  __dev_notify_flags (net/core/dev.c:9787)
[    9.853339][  T199]  ? netif_change_name (net/core/dev.c:1495)
[    9.853476][  T199]  ? __dev_change_flags (net/core/dev.c:9752)
[    9.853617][  T199]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[    9.853752][  T199]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[    9.853889][  T199]  ? is_bpf_text_address (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/bpf/core.c:749 (discriminator 2))
[    9.854027][  T199]  netif_change_flags (net/core/dev.c:9820)
[    9.854163][  T199]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[    9.854303][  T199]  do_setlink.isra.0 (net/core/rtnetlink.c:3206 (discriminator 1))
[    9.854443][  T199]  ? rtnl_link_get_size (net/core/rtnetlink.c:716)
[    9.854585][  T199]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[    9.854845][  T199]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[    9.854979][  T199]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[    9.855117][  T199]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[    9.855341][  T199]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[    9.855480][  T199]  ? __kernel_text_address (kernel/extable.c:79)
[    9.855619][  T199]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[    9.855756][  T199]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[    9.855891][  T199]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:341 net/core/rtnetlink.c:4149)
[    9.856113][  T199]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.856252][  T199]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[    9.856386][  T199]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.856521][  T199]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.856748][  T199]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[    9.856885][  T199]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:820)
[    9.857023][  T199]  ? __mutex_lock (kernel/locking/mutex.c:798 (discriminator 1) kernel/locking/mutex.c:820 (discriminator 1))
[    9.857159][  T199]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:341 net/core/rtnetlink.c:4149)
[    9.857301][  T199]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[    9.857439][  T199]  ? __rtnl_newlink (net/core/rtnetlink.c:4000)
[    9.857582][  T199]  rtnl_newlink (net/core/rtnetlink.c:4150)
[    9.857719][  T199]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[    9.857941][  T199]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[    9.858077][  T199]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[    9.858216][  T199]  ? mark_usage (kernel/locking/lockdep.c:4674)
[    9.858351][  T199]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[    9.858575][  T199]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[    9.858709][  T199]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[    9.858845][  T199]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[    9.858983][  T199]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[    9.859212][  T199]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[    9.859348][  T199]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7061)
[    9.859484][  T199]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[    9.859624][  T199]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[    9.859845][  T199]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[    9.859982][  T199]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[    9.860117][  T199]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[    9.860343][  T199]  netlink_rcv_skb (net/netlink/af_netlink.c:2551)
[    9.860480][  T199]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[    9.860619][  T199]  ? netlink_ack (./include/linux/skbuff.h:2718)
[    9.860757][  T199]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[    9.860892][  T199]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[    9.861114][  T199]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[    9.861255][  T199]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[    9.861394][  T199]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[    9.861531][  T199]  netlink_sendmsg (net/netlink/af_netlink.c:1895)
[    9.861758][  T199]  ? netlink_unicast (./include/net/net_namespace.h:419 (discriminator 7))
[    9.861894][  T199]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[    9.862031][  T199]  ____sys_sendmsg (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2698 (discriminator 4))
[    9.862166][  T199]  ? copy_msghdr_from_user (net/socket.c:2635)
[    9.862306][  T199]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5349)
[    9.862471][  T199]  ? move_addr_to_kernel (net/socket.c:258)
[    9.862611][  T199]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[    9.862843][  T199]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[    9.862978][  T199]  ___sys_sendmsg (net/socket.c:2752)
[    9.863110][  T199]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3131)
[    9.863281][  T199]  ? copy_msghdr_from_user (net/socket.c:2603)
[    9.863511][  T199]  __sys_sendmsg (net/socket.c:2784)
[    9.863649][  T199]  ? __sys_sendmsg_sock (net/socket.c:2765)
[    9.863788][  T199]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3156 (discriminator 6))
[    9.863954][  T199]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    9.864177][  T199]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.864312][  T199]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.864445][  T199]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.864579][  T199]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.864803][  T199]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.864968][  T199] RIP: 0033:0x7ffa189cc08e
[    9.865109][  T199] 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
[    9.865683][  T199] RSP: 002b:00007ffe97292340 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[    9.865890][  T199] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ffa189cc08e
[    9.866181][  T199] RDX: 0000000000000000 RSI: 00007ffe972923f0 RDI: 0000000000000005
[    9.866381][  T199] RBP: 00007ffe97292350 R08: 0000000000000000 R09: 0000000000000000
[    9.866671][  T199] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a10eb02
[    9.866875][  T199] R13: 000000000049f620 R14: 0000000000000000 R15: 00007ffe97292ac0
| [   10.004735][  T203] ------------[ cut here ]------------
| [   10.004959][  T203] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: ip/203
| [   10.005274][  T203] Modules linked in:
| [   10.005706][  T203] Tainted: [W]=WARN
[   10.005814][  T203] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.005992][  T203] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   10.006184][  T203] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   10.006690][  T203] RSP: 0018:ffa00000009771b0 EFLAGS: 00010286
[   10.006867][  T203] RAX: 00000000ffffffa6 RBX: ff1100000cf0bc40 RCX: 1ff400000012edfc
[   10.007077][  T203] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000cf0bcfc
[   10.007291][  T203] RBP: ff11000009519000 R08: 1fe22000019e17a1 R09: ff1100000f118ba8
[   10.007502][  T203] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   10.007717][  T203] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
[   10.007983][  T203] FS:  00007f3eac7d3840(0000) GS:ff110000ce847000(0000) knlGS:0000000000000000
[   10.008241][  T203] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.008419][  T203] CR2: 00000000004a77b8 CR3: 00000000095cc001 CR4: 0000000000771ef0
[   10.008634][  T203] PKRU: 55555554
[   10.008740][  T203] Call Trace:
[   10.008846][  T203]  <TASK>
[   10.008920][  T203]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   10.009066][  T203]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   10.009215][  T203]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[   10.009357][  T203]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   10.009464][  T203]  ? rtnl_newlink_create (./include/linux/netdevice.h:2830 ./include/net/netdev_lock.h:42 ./include/net/netdev_lock.h:39 net/core/rtnetlink.c:3912)
[   10.009611][  T203]  __dev_notify_flags (net/core/dev.c:9787)
[   10.009753][  T203]  ? netif_change_name (net/core/dev.c:1495)
[   10.009897][  T203]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   10.010072][  T203]  rtnl_configure_link (net/core/rtnetlink.c:3670)
[   10.010220][  T203]  rtnl_newlink_create (net/core/rtnetlink.c:3914)
[   10.010361][  T203]  ? rtnl_create_link (net/core/rtnetlink.c:3691)
[   10.010502][  T203]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[   10.010647][  T203]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:820)
[   10.010791][  T203]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   10.010931][  T203]  ? rtnl_link_ops_get (./include/linux/srcu.h:187 (discriminator 2) ./include/linux/srcu.h:294 (discriminator 2) net/core/rtnetlink.c:574 (discriminator 2))
[   10.011074][  T203]  __rtnl_newlink (net/core/rtnetlink.c:4035)
[   10.011225][  T203]  rtnl_newlink (net/core/rtnetlink.c:4150)
[   10.011366][  T203]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   10.011529][  T203]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   10.011671][  T203]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[   10.011810][  T203]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   10.011948][  T203]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   10.012091][  T203]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   10.012237][  T203]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[   10.012375][  T203]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7061)
[   10.012514][  T203]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   10.012655][  T203]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.012794][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   10.012934][  T203]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   10.013071][  T203]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   10.013215][  T203]  netlink_rcv_skb (net/netlink/af_netlink.c:2551)
[   10.013355][  T203]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.013492][  T203]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.013638][  T203]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   10.013777][  T203]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   10.013918][  T203]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.014059][  T203]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.014201][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   10.014341][  T203]  netlink_sendmsg (net/netlink/af_netlink.c:1895)
[   10.014481][  T203]  ? netlink_unicast (./include/net/net_namespace.h:419 (discriminator 7))
[   10.014625][  T203]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   10.014767][  T203]  ____sys_sendmsg (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2698 (discriminator 4))
[   10.014908][  T203]  ? copy_msghdr_from_user (net/socket.c:2635)
[   10.015047][  T203]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5349)
[   10.015223][  T203]  ? move_addr_to_kernel (net/socket.c:258)
[   10.015364][  T203]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   10.015505][  T203]  ? rcu_read_unlock (./include/linux/rcupdate.h:867 (discriminator 5))
[   10.015649][  T203]  ___sys_sendmsg (net/socket.c:2752)
[   10.015788][  T203]  ? wp_page_copy (./include/linux/pgtable.h:117 mm/memory.c:3976)
[   10.015926][  T203]  ? copy_msghdr_from_user (net/socket.c:2603)
[   10.016068][  T203]  ? do_wp_page (./include/linux/pgtable.h:117 mm/memory.c:4331)
[   10.016216][  T203]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   10.016362][  T203]  __sys_sendmsg (net/socket.c:2784)
[   10.016500][  T203]  ? __sys_sendmsg_sock (net/socket.c:2765)
[   10.016644][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   10.016783][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   10.016919][  T203]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   10.017054][  T203]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   10.017205][  T203]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   10.017341][  T203]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.017513][  T203] RIP: 0033:0x7f3eaca0d08e
[   10.017665][  T203] 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
[   10.018155][  T203] RSP: 002b:00007ffd738700b0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.018368][  T203] RAX: ffffffffffffffda RBX: 00007ffd73870850 RCX: 00007f3eaca0d08e
[   10.018576][  T203] RDX: 0000000000000000 RSI: 00007ffd73870160 RDI: 0000000000000005
[   10.018779][  T203] RBP: 00007ffd738700c0 R08: 0000000000000000 R09: 0000000000000000
[   10.018986][  T203] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a10eb02
[   10.019193][  T203] R13: 000000000049f620 R14: 0000000000000000 R15: 00007ffd73870830
| [   10.067874][  T204] ------------[ cut here ]------------
| [   10.068240][  T204] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: ip/204
| [   10.068489][  T204] Modules linked in:
| [   10.068947][  T204] Tainted: [W]=WARN
[   10.069052][  T204] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.069269][  T204] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   10.069449][  T204] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   10.069938][  T204] RSP: 0018:ffa0000000987020 EFLAGS: 00010286
[   10.070117][  T204] RAX: 00000000ffffffa6 RBX: ff1100000b65e040 RCX: 1ff4000000130dca
[   10.070327][  T204] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b65e0fc
[   10.070531][  T204] RBP: ff11000009519000 R08: 1fe22000016cbc21 R09: ff1100000f11d180
[   10.070737][  T204] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
[   10.070940][  T204] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
[   10.071149][  T204] FS:  00007f160d35c840(0000) GS:ff110000ce6c7000(0000) knlGS:0000000000000000
[   10.071392][  T204] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.071565][  T204] CR2: 000000000e92b988 CR3: 000000000f137005 CR4: 0000000000771ef0
[   10.071775][  T204] PKRU: 55555554
[   10.071878][  T204] Call Trace:
[   10.071983][  T204]  <TASK>
[   10.072056][  T204]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   10.072202][  T204]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   10.072306][  T204]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   10.072442][  T204]  __dev_notify_flags (net/core/dev.c:9787)
[   10.072584][  T204]  ? netif_change_name (net/core/dev.c:1495)
[   10.072720][  T204]  ? __dev_change_flags (net/core/dev.c:9752)
[   10.072856][  T204]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   10.072994][  T204]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   10.073130][  T204]  ? is_bpf_text_address (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/bpf/core.c:749 (discriminator 2))
[   10.073357][  T204]  netif_change_flags (net/core/dev.c:9820)
[   10.073495][  T204]  do_setlink.isra.0 (net/core/rtnetlink.c:3206 (discriminator 1))
[   10.073638][  T204]  ? rtnl_link_get_size (net/core/rtnetlink.c:716)
[   10.073775][  T204]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[   10.073950][  T204]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.074084][  T204]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   10.074281][  T204]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   10.074416][  T204]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.074553][  T204]  ? __kernel_text_address (kernel/extable.c:79)
[   10.074696][  T204]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   10.074832][  T204]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   10.074970][  T204]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:341 net/core/rtnetlink.c:4149)
[   10.075106][  T204]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   10.075249][  T204]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   10.075386][  T204]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   10.075520][  T204]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   10.075661][  T204]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[   10.075798][  T204]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:820)
[   10.075935][  T204]  ? __mutex_lock (kernel/locking/mutex.c:798 (discriminator 1) kernel/locking/mutex.c:820 (discriminator 1))
[   10.076076][  T204]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:341 net/core/rtnetlink.c:4149)
[   10.076221][  T204]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   10.076360][  T204]  ? __rtnl_newlink (net/core/rtnetlink.c:4000)
[   10.076499][  T204]  rtnl_newlink (net/core/rtnetlink.c:4150)
[   10.076642][  T204]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   10.076777][  T204]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   10.076912][  T204]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[   10.077047][  T204]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   10.077191][  T204]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   10.077330][  T204]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   10.077464][  T204]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   10.077603][  T204]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[   10.077738][  T204]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   10.077874][  T204]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[   10.078010][  T204]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7061)
[   10.078149][  T204]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   10.078288][  T204]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.078422][  T204]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   10.078557][  T204]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   10.078696][  T204]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   10.078831][  T204]  netlink_rcv_skb (net/netlink/af_netlink.c:2551)
[   10.078967][  T204]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.079116][  T204]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.079268][  T204]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   10.079403][  T204]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   10.079540][  T204]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.079681][  T204]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.079818][  T204]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   10.079955][  T204]  netlink_sendmsg (net/netlink/af_netlink.c:1895)
[   10.080095][  T204]  ? netlink_unicast (./include/net/net_namespace.h:419 (discriminator 7))
[   10.080243][  T204]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   10.080382][  T204]  ____sys_sendmsg (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2698 (discriminator 4))
[   10.080522][  T204]  ? copy_msghdr_from_user (net/socket.c:2635)
[   10.080662][  T204]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5349)
[   10.080828][  T204]  ? move_addr_to_kernel (net/socket.c:258)
[   10.080963][  T204]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.081099][  T204]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   10.081247][  T204]  ___sys_sendmsg (net/socket.c:2752)
[   10.081382][  T204]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3131)
[   10.081589][  T204]  ? copy_msghdr_from_user (net/socket.c:2603)
[   10.081737][  T204]  __sys_sendmsg (net/socket.c:2784)
[   10.081874][  T204]  ? __sys_sendmsg_sock (net/socket.c:2765)
[   10.082009][  T204]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3156 (discriminator 6))
[   10.082185][  T204]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.082326][  T204]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   10.082463][  T204]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   10.082602][  T204]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   10.082738][  T204]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   10.082873][  T204]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.083042][  T204] RIP: 0033:0x7f160d59608e
[   10.083190][  T204] 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
[   10.083680][  T204] RSP: 002b:00007ffce2069050 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.083885][  T204] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f160d59608e
[   10.084088][  T204] RDX: 0000000000000000 RSI: 00007ffce2069100 RDI: 0000000000000005
[   10.084301][  T204] RBP: 00007ffce2069060 R08: 0000000000000000 R09: 0000000000000000
[   10.084502][  T204] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a10eb02
[   10.084711][  T204] R13: 000000000049f620 R14: 0000000000000000 R15: 00007ffce20697d0
| [   32.366724][   T12] ------------[ cut here ]------------
| [   32.366929][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 0/12
| [   32.367238][   T12] Modules linked in:
| [   32.367656][   T12] Tainted: [W]=WARN
[   32.367751][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.367908][   T12] Workqueue: netns cleanup_net
[   32.368045][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.368238][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.368727][   T12] RSP: 0018:ffa00000000c7938 EFLAGS: 00010286
[   32.368885][   T12] RAX: 00000000ffffffa6 RBX: ff110000095ac200 RCX: 1ff4000000018eed
[   32.369070][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000095ac2bc
[   32.369265][   T12] RBP: ff1100000f3ec000 R08: 1fe22000012b5859 R09: ff11000001aed1d0
[   32.369454][   T12] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   32.369646][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   32.369838][   T12] FS:  0000000000000000(0000) GS:ff110000ce847000(0000) knlGS:0000000000000000
[   32.370053][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.370214][   T12] CR2: 00005599abe62d5c CR3: 000000000bdee003 CR4: 0000000000771ef0
[   32.370401][   T12] PKRU: 55555554
[   32.370495][   T12] Call Trace:
[   32.370589][   T12]  <TASK>
[   32.370664][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   32.370824][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   32.370977][   T12]  ? queue_rcu_work (./include/linux/rcupdate.h:125 kernel/workqueue.c:2686)
[   32.371111][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   32.371241][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.371363][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   32.371486][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.371610][   T12]  ops_undo_list (net/core/net_namespace.c:187 net/core/net_namespace.c:248)
[   32.371738][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[   32.371859][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   32.371983][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   32.372108][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   32.372234][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   32.372358][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   32.372478][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   32.372604][   T12]  process_one_work (kernel/workqueue.c:3314)
[   32.372733][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   32.372853][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   32.372981][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   32.373107][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   32.373235][   T12]  kthread (kernel/kthread.c:436)
[   32.373327][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.373481][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.373602][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.373732][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   32.373886][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.374007][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.374130][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   32.376747][   T12] ------------[ cut here ]------------
| [   32.376881][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 0/12
| [   32.377122][   T12] Modules linked in:
| [   32.377594][   T12] Tainted: [W]=WARN
[   32.377691][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.377847][   T12] Workqueue: netns cleanup_net
[   32.378055][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.378218][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.378742][   T12] RSP: 0018:ffa00000000c7938 EFLAGS: 00010286
[   32.378898][   T12] RAX: 00000000ffffffa6 RBX: ff110000095acc80 RCX: 1ff4000000018eed
[   32.379156][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000095acd3c
[   32.379349][   T12] RBP: ff1100000f3c9000 R08: 1fe22000012b59a9 R09: ff11000001aed1d0
[   32.379537][   T12] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   32.379797][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   32.379980][   T12] FS:  0000000000000000(0000) GS:ff110000ce847000(0000) knlGS:0000000000000000
[   32.380202][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.380432][   T12] CR2: 00005599abe62d5c CR3: 000000007b14d002 CR4: 0000000000771ef0
[   32.380622][   T12] PKRU: 55555554
[   32.380719][   T12] Call Trace:
[   32.380815][   T12]  <TASK>
[   32.380952][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   32.381109][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   32.381266][   T12]  ? queue_rcu_work (./include/linux/rcupdate.h:125 kernel/workqueue.c:2686)
[   32.381392][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   32.381590][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.381713][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   32.381837][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.381961][   T12]  ops_undo_list (net/core/net_namespace.c:187 net/core/net_namespace.c:248)
[   32.382156][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[   32.382288][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   32.382417][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   32.382541][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   32.382740][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   32.382862][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   32.382982][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   32.383106][   T12]  process_one_work (kernel/workqueue.c:3314)
[   32.383308][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   32.383431][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   32.383557][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   32.383689][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   32.383881][   T12]  kthread (kernel/kthread.c:436)
[   32.383973][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.384126][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.384324][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.384449][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   32.384601][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.384732][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.384925][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   32.387556][   T12] ------------[ cut here ]------------
| [   32.387694][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 0/12
| [   32.387936][   T12] Modules linked in:
| [   32.388785][   T12] Tainted: [W]=WARN
[   32.388881][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.389035][   T12] Workqueue: netns cleanup_net
[   32.389160][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.389369][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.389806][   T12] RSP: 0018:ffa00000000c7938 EFLAGS: 00010286
[   32.389962][   T12] RAX: 00000000ffffffa6 RBX: ff110000095ac3c0 RCX: 1ff4000000018eed
[   32.390144][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000095ac47c
[   32.390371][   T12] RBP: ff1100000f2a4000 R08: 1fe22000012b5891 R09: ff11000001aed1d0
[   32.390551][   T12] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   32.390742][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   32.390969][   T12] FS:  0000000000000000(0000) GS:ff110000ce847000(0000) knlGS:0000000000000000
[   32.391227][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.391379][   T12] CR2: 00005599abe62d5c CR3: 000000007b14d002 CR4: 0000000000771ef0
[   32.391562][   T12] PKRU: 55555554
[   32.391657][   T12] Call Trace:
[   32.391749][   T12]  <TASK>
[   32.391812][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   32.391967][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   32.392119][   T12]  ? queue_rcu_work (./include/linux/rcupdate.h:125 kernel/workqueue.c:2686)
[   32.392286][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   32.392410][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.392532][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   32.392659][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.392784][   T12]  ops_undo_list (net/core/net_namespace.c:187 net/core/net_namespace.c:248)
[   32.392907][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[   32.393028][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   32.393154][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   32.393324][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   32.393446][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   32.393571][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   32.393697][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   32.393820][   T12]  process_one_work (kernel/workqueue.c:3314)
[   32.393946][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   32.394067][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   32.394239][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   32.394366][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   32.394488][   T12]  kthread (kernel/kthread.c:436)
[   32.394582][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.394739][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.394862][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.394986][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   32.395138][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.395306][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.395427][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   32.397716][   T12] ------------[ cut here ]------------
| [   32.397853][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12
| [   32.398093][   T12] Modules linked in:
| [   32.398475][   T12] Tainted: [W]=WARN
[   32.398567][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.398725][   T12] Workqueue: netns cleanup_net
[   32.398856][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.399022][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.399460][   T12] RSP: 0018:ffa00000000c7938 EFLAGS: 00010286
[   32.399614][   T12] RAX: 00000000ffffffa6 RBX: ff110000095ac040 RCX: 1ff4000000018eed
[   32.399800][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000095ac0fc
[   32.399981][   T12] RBP: ff1100000952c000 R08: 1fe22000012b5821 R09: ff11000001aed1d0
[   32.400161][   T12] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   32.400348][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   32.400531][   T12] FS:  0000000000000000(0000) GS:ff110000ce6c7000(0000) knlGS:0000000000000000
[   32.400748][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.400900][   T12] CR2: 00005599abe62d5c CR3: 000000000f8ce006 CR4: 0000000000771ef0
[   32.401081][   T12] PKRU: 55555554
[   32.401178][   T12] Call Trace:
[   32.401269][   T12]  <TASK>
[   32.401337][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   32.401493][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   32.401646][   T12]  ? queue_rcu_work (./include/linux/rcupdate.h:125 kernel/workqueue.c:2686)
[   32.401768][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   32.401891][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.402012][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   32.402133][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.402262][   T12]  ops_undo_list (net/core/net_namespace.c:187 net/core/net_namespace.c:248)
[   32.402385][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[   32.402504][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   32.402627][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   32.402758][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   32.402878][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   32.403001][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   32.403122][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   32.403249][   T12]  process_one_work (kernel/workqueue.c:3314)
[   32.403374][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   32.403495][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   32.403619][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   32.403747][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   32.403868][   T12]  kthread (kernel/kthread.c:436)
[   32.403958][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.404109][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.404237][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.404359][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   32.404511][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.404630][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.404756][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   32.406772][   T12] ------------[ cut here ]------------
| [   32.406899][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12
| [   32.407134][   T12] Modules linked in:
| [   32.407514][   T12] Tainted: [W]=WARN
[   32.407604][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.407758][   T12] Workqueue: netns cleanup_net
[   32.407882][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.408038][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.408471][   T12] RSP: 0018:ffa00000000c7938 EFLAGS: 00010286
[   32.408623][   T12] RAX: 00000000ffffffa6 RBX: ff110000095acac0 RCX: 1ff4000000018eed
[   32.408817][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000095acb7c
[   32.409001][   T12] RBP: ff1100000f344000 R08: 1fe22000012b5971 R09: ff11000001aed1d0
[   32.409185][   T12] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   32.409364][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   32.409546][   T12] FS:  0000000000000000(0000) GS:ff110000ce6c7000(0000) knlGS:0000000000000000
[   32.409762][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.409916][   T12] CR2: 00005599abe62d5c CR3: 000000000f8ce006 CR4: 0000000000771ef0
[   32.410098][   T12] PKRU: 55555554
[   32.410194][   T12] Call Trace:
[   32.410285][   T12]  <TASK>
[   32.410347][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   32.410502][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   32.410655][   T12]  ? queue_rcu_work (./include/linux/rcupdate.h:125 kernel/workqueue.c:2686)
[   32.410778][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   32.410901][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.411023][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   32.411144][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.411272][   T12]  ops_undo_list (net/core/net_namespace.c:187 net/core/net_namespace.c:248)
[   32.411393][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[   32.411512][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   32.411636][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   32.411765][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   32.411885][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   32.412009][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   32.412129][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   32.412259][   T12]  process_one_work (kernel/workqueue.c:3314)
[   32.412384][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   32.412505][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   32.412633][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   32.412762][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   32.412882][   T12]  kthread (kernel/kthread.c:436)
[   32.412974][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.413125][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.413253][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.413373][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   32.413526][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.413651][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.413772][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   32.427703][   T12] ------------[ cut here ]------------
| [   32.427885][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12
| [   32.428142][   T12] Modules linked in:
| [   32.428623][   T12] Tainted: [W]=WARN
[   32.428728][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.428922][   T12] Workqueue: netns cleanup_net
[   32.429059][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.429273][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.429748][   T12] RSP: 0018:ffa00000000c76f8 EFLAGS: 00010286
[   32.429912][   T12] RAX: 00000000ffffffa6 RBX: ff110000095ac580 RCX: 1ff4000000018ea5
[   32.430107][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000095ac63c
[   32.430363][   T12] RBP: ff11000009519000 R08: 1fe22000012b58c9 R09: ff11000001aed1f8
[   32.430561][   T12] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000041
[   32.430766][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: ffa00000000c77e0
[   32.430961][   T12] FS:  0000000000000000(0000) GS:ff110000ce6c7000(0000) knlGS:0000000000000000
[   32.431245][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.431412][   T12] CR2: 00007f4bde635f98 CR3: 000000007b14d005 CR4: 0000000000771ef0
[   32.431608][   T12] PKRU: 55555554
[   32.431711][   T12] Call Trace:
[   32.431808][   T12]  <TASK>
[   32.431877][   T12]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   32.432010][   T12]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   32.432112][   T12]  netif_close_many (net/core/dev.c:1804)
[   32.432297][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   32.432430][   T12]  ? default_device_exit_batch (net/core/dev.c:13075)
[   32.432562][   T12]  ? __dev_close_many (net/core/dev.c:1781)
[   32.432698][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   32.432832][   T12]  netif_close_many_and_unlock (net/core/dev.c:12330)
[   32.432965][   T12]  ? unregister_netdevice_many_notify (./include/linux/netdevice.h:2830 net/core/dev.c:12396)
[   32.433128][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12400)
[   32.433345][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.433477][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.433608][   T12]  ? default_device_exit_net (net/core/dev.c:13033 (discriminator 1))
[   32.433744][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   32.433907][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.434037][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.434167][   T12]  ? unregister_netdevice_queue (net/core/dev.c:12301 (discriminator 1))
[   32.434382][   T12]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   32.434514][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   32.434652][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   32.434786][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   32.434917][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   32.435048][   T12]  ? fou_exit_net (net/ipv4/fou_core.c:1228)
[   32.435232][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   32.435364][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[   32.435503][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   32.435637][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   32.435776][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   32.435907][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   32.436039][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   32.436224][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   32.436357][   T12]  process_one_work (kernel/workqueue.c:3314)
[   32.436492][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   32.436624][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   32.436764][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   32.436900][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   32.437030][   T12]  kthread (kernel/kthread.c:436)
[   32.437129][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.437346][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.437478][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.437611][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   32.437779][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.437910][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.438042][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   32.440979][   T12] ------------[ cut here ]------------
| [   32.441115][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12
| [   32.441667][   T12] Modules linked in:
| [   32.442106][   T12] Tainted: [W]=WARN
[   32.442259][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.442420][   T12] Workqueue: netns cleanup_net
[   32.442553][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.442721][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.443248][   T12] RSP: 0018:ffa00000000c7748 EFLAGS: 00010286
[   32.443408][   T12] RAX: 00000000ffffffa6 RBX: ff1100000c922ac0 RCX: 1ff4000000018eaf
[   32.443599][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c922b7c
[   32.443792][   T12] RBP: ff11000008e6c000 R08: 1fe2200001924571 R09: ff11000001aed1d0
[   32.443984][   T12] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000041
[   32.444225][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: ffa00000000c77e0
[   32.444417][   T12] FS:  0000000000000000(0000) GS:ff110000ce6c7000(0000) knlGS:0000000000000000
[   32.444643][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.444804][   T12] CR2: 00007f4bde635f98 CR3: 000000007b14d005 CR4: 0000000000771ef0
[   32.444995][   T12] PKRU: 55555554
[   32.445089][   T12] Call Trace:
[   32.445260][   T12]  <TASK>
[   32.445328][   T12]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   32.445457][   T12]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   32.445555][   T12]  netif_close_many (net/core/dev.c:1804)
[   32.445689][   T12]  ? __dev_close_many (net/core/dev.c:1781)
[   32.445818][   T12]  ? netif_close_many_and_unlock (./include/linux/netdevice.h:2835 net/core/dev.c:12334)
[   32.445977][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[   32.446139][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.446330][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.446457][   T12]  ? default_device_exit_net (net/core/dev.c:13033 (discriminator 1))
[   32.446583][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   32.446744][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.446872][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.446998][   T12]  ? unregister_netdevice_queue (net/core/dev.c:12301 (discriminator 1))
[   32.447156][   T12]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   32.447355][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   32.447484][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   32.447615][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   32.447750][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   32.447880][   T12]  ? fou_exit_net (net/ipv4/fou_core.c:1228)
[   32.448009][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   32.448138][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[   32.448328][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   32.448460][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   32.448587][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   32.448717][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   32.448847][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   32.448974][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   32.449103][   T12]  process_one_work (kernel/workqueue.c:3314)
[   32.449301][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   32.449429][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   32.449560][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   32.449696][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   32.449823][   T12]  kthread (kernel/kthread.c:436)
[   32.449921][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.450080][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.450269][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.450397][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   32.450558][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.450688][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.450818][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   32.453506][   T12] ------------[ cut here ]------------
| [   32.453651][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 0/12
| [   32.453900][   T12] Modules linked in:
| [   32.454282][   T12] Tainted: [W]=WARN
[   32.454376][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.454529][   T12] Workqueue: netns cleanup_net
[   32.454662][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.454827][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.455273][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   32.455428][   T12] RAX: 00000000ffffffa6 RBX: ff1100000c923c40 RCX: 1ff4000000018ed5
[   32.455615][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c923cfc
[   32.455803][   T12] RBP: ff11000009519000 R08: 1fe22000019247a1 R09: ff11000001aed1d0
[   32.455986][   T12] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   32.456180][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   32.456368][   T12] FS:  0000000000000000(0000) GS:ff110000ce847000(0000) knlGS:0000000000000000
[   32.456584][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.456742][   T12] CR2: 00005599abe62d5c CR3: 000000000991d002 CR4: 0000000000771ef0
[   32.456929][   T12] PKRU: 55555554
[   32.457022][   T12] Call Trace:
[   32.457115][   T12]  <TASK>
[   32.457185][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   32.457345][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   32.457502][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.457625][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.457754][   T12]  ? unregister_netdevice_queue (net/core/dev.c:12301 (discriminator 1))
[   32.457910][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   32.458036][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   32.458160][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   32.458297][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   32.458420][   T12]  ? fou_exit_net (net/ipv4/fou_core.c:1228)
[   32.458545][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   32.458674][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[   32.458797][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   32.458923][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   32.459048][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   32.459178][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   32.459303][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   32.459444][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   32.459569][   T12]  process_one_work (kernel/workqueue.c:3314)
[   32.459700][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   32.459823][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   32.459952][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   32.460078][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   32.460208][   T12]  kthread (kernel/kthread.c:436)
[   32.460302][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.460456][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.460580][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.460708][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   32.460864][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.460987][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.461112][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   32.463654][   T12] ------------[ cut here ]------------
| [   32.463794][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 0/12
| [   32.464043][   T12] Modules linked in:
| [   32.464430][   T12] Tainted: [W]=WARN
[   32.464523][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.464694][   T12] Workqueue: netns cleanup_net
[   32.464822][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   32.464984][   T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 e8 b2 f0 ff b9 a6 ff ff
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   a:	48 89 f8             	mov    %rdi,%rax
   d:	83 e0 07             	and    $0x7,%eax
  10:	83 c0 03             	add    $0x3,%eax
  13:	38 d0                	cmp    %dl,%al
  15:	7c 04                	jl     0x1b
  17:	84 d2                	test   %dl,%dl
  19:	75 79                	jne    0x94
  1b:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  20:	44 8b 48 08          	mov    0x8(%rax),%r9d
  24:	e9 42 ff ff ff       	jmp    0xffffffffffffff6b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	48 89 de             	mov    %rbx,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b324
  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:	48 89 de             	mov    %rbx,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 e8 b2 f0 ff       	call   0xfffffffffff0b2fa
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   32.465432][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   32.465587][   T12] RAX: 00000000ffffffa6 RBX: ff1100000f088900 RCX: 1ff4000000018ed5
[   32.465776][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000f0889bc
[   32.465961][   T12] RBP: ff11000008e6c000 R08: 1fe2200001e11139 R09: ff11000001aed1d0
[   32.466143][   T12] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   32.466333][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   32.466518][   T12] FS:  0000000000000000(0000) GS:ff110000ce847000(0000) knlGS:0000000000000000
[   32.466738][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.466894][   T12] CR2: 00005599abe62d5c CR3: 000000000991d002 CR4: 0000000000771ef0
[   32.467079][   T12] PKRU: 55555554
[   32.467178][   T12] Call Trace:
[   32.467271][   T12]  <TASK>
[   32.467339][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   32.467497][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   32.467656][   T12]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   32.467781][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   32.467904][   T12]  ? unregister_netdevice_queue (net/core/dev.c:12301 (discriminator 1))
[   32.468059][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   32.468188][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   32.468314][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   32.468438][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   32.468562][   T12]  ? fou_exit_net (net/ipv4/fou_core.c:1228)
[   32.468692][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   32.468818][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[   32.468940][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   32.469067][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   32.469198][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   32.469320][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   32.469445][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   32.469570][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   32.469701][   T12]  process_one_work (kernel/workqueue.c:3314)
[   32.469829][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   32.469953][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   32.470081][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   32.470214][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   32.470340][   T12]  kthread (kernel/kthread.c:436)
[   32.470434][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   32.470589][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   32.470717][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   32.470841][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   32.470995][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   32.471119][   T12]  ? kthread_affine_node (kernel/kthread.c:378)


Finger prints:
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:__dev_notify_flags:rtnl_configure_link:rtnl_newlink_create
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:register_netdev:sit_init_net
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:register_netdev:loopback_net_init
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:netif_close_many:netif_close_many_and_unlock:unregister_netdevice_many_notify
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:netif_close_many:unregister_netdevice_many_notify:default_device_exit_batch
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:ops_undo_list:cleanup_net:process_one_work
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:__dev_notify_flags:netif_change_flags:rtnl_newlink
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:register_netdev:ip6_tnl_init_net
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:register_netdev:vti6_init_net
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:default_device_exit_batch:ops_undo_list:cleanup_net
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:__ip_tunnel_create:ip_tunnel_init_net