======================================
| xx__-> [   13.281007][  T193] ------------[ cut here ]------------
| [   13.281327][  T193] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: ip/193
| [   13.281796][  T193] Modules linked in:
| [   13.282344][  T193] Tainted: [W]=WARN
[   13.282452][  T193] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.282625][  T193] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   13.282832][  T193] 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
[   13.283312][  T193] RSP: 0018:ffa0000000937a80 EFLAGS: 00010286
[   13.283489][  T193] RAX: 00000000ffffffa6 RBX: ff110000020dc740 RCX: 1ff4000000126f16
[   13.283719][  T193] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000020dc7fc
[   13.283959][  T193] RBP: ff1100000933c000 R08: 1fe220000041b901 R09: ff1100000f408b80
[   13.284160][  T193] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   13.284358][  T193] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000933c000
[   13.284575][  T193] FS:  00007fbefabef840(0000) GS:ff110000c9e47000(0000) knlGS:0000000000000000
[   13.284847][  T193] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.285186][  T193] CR2: 0000000000479648 CR3: 0000000004b28003 CR4: 0000000000771ef0
[   13.285388][  T193] PKRU: 55555554
[   13.285524][  T193] Call Trace:
[   13.285678][  T193]  <TASK>
[   13.285769][  T193]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   13.285907][  T193]  ? notifier_call_chain (kernel/notifier.c:85)
[   13.286070][  T193]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   13.286185][  T193]  register_netdevice (net/core/dev.c:11488)
[   13.286324][  T193]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   13.286502][  T193]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   13.286644][  T193]  register_netdev (net/core/dev.c:11552)
[   13.286776][  T193]  loopback_net_init (drivers/net/loopback.c:218)
[   13.286911][  T193]  ops_init (net/core/net_namespace.c:137)
[   13.287037][  T193]  setup_net (net/core/net_namespace.c:446)
[   13.287149][  T193]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   13.287280][  T193]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   13.287415][  T193]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   13.287575][  T193]  copy_net_ns (net/core/net_namespace.c:579)
[   13.287715][  T193]  create_new_namespaces (kernel/nsproxy.c:132)
[   13.287853][  T193]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   13.288014][  T193]  ksys_unshare (kernel/fork.c:3243)
[   13.288236][  T193]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   13.288452][  T193]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   13.288897][  T193]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   13.289059][  T193]  ? __ia32_sys_open (fs/open.c:1374)
[   13.289193][  T193]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   13.289327][  T193]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   13.289470][  T193]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   13.289602][  T193]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   13.289759][  T193]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   13.289891][  T193]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.290125][  T193] RIP: 0033:0x7fbefaeb1bcb
[   13.290339][  T193] 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
[   13.291290][  T193] RSP: 002b:00007ffecc7d38d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[   13.291528][  T193] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbefaeb1bcb
[   13.291757][  T193] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[   13.291956][  T193] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[   13.292168][  T193] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffecc7d5b00
[   13.292372][  T193] R13: 0000000000000001 R14: 00007fbefabef6f8 R15: 00007ffecc7d6870
| [   13.297916][  T193] ------------[ cut here ]------------
| [   13.298074][  T193] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: ip/193
| [   13.298355][  T193] Modules linked in:
| [   13.298858][  T193] Tainted: [W]=WARN
[   13.298959][  T193] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.299138][  T193] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   13.299325][  T193] 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
[   13.299927][  T193] RSP: 0018:ffa0000000937918 EFLAGS: 00010286
[   13.300100][  T193] RAX: 00000000ffffffa6 RBX: ff1100000c196900 RCX: 1ff4000000126ee9
[   13.300310][  T193] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c1969bc
[   13.300522][  T193] RBP: ff11000008b8c000 R08: 1fe2200001832d39 R09: ff1100000f408b80
[   13.300745][  T193] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   13.300942][  T193] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000008b8c000
[   13.301251][  T193] FS:  00007fbefabef840(0000) GS:ff110000c9e47000(0000) knlGS:0000000000000000
[   13.301524][  T193] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.301790][  T193] CR2: 0000000000479648 CR3: 0000000004b28003 CR4: 0000000000771ef0
[   13.301992][  T193] PKRU: 55555554
[   13.302093][  T193] Call Trace:
[   13.302214][  T193]  <TASK>
[   13.302293][  T193]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   13.302527][  T193]  ? notifier_call_chain (kernel/notifier.c:85)
[   13.302677][  T193]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   13.303055][  T193]  register_netdevice (net/core/dev.c:11488)
[   13.303196][  T193]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   13.303466][  T193]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   13.303610][  T193]  __ip_tunnel_create (net/ipv4/ip_tunnel.c:268)
[   13.303749][  T193]  ? ip_tunnel_encap_del_ops (net/ipv4/ip_tunnel.c:479 (discriminator 1))
[   13.303887][  T193]  ? net_generic (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2))
[   13.304115][  T193]  ip_tunnel_init_net (net/ipv4/ip_tunnel.c:1147)
[   13.304246][  T193]  ? ip_tunnel_ctl (net/ipv4/ip_tunnel.c:952)
[   13.304385][  T193]  ? __kmalloc_noprof (mm/slub.c:5296 mm/slub.c:5307)
[   13.304526][  T193]  ops_init (net/core/net_namespace.c:137)
[   13.304722][  T193]  setup_net (net/core/net_namespace.c:446)
[   13.304825][  T193]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   13.304962][  T193]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   13.305126][  T193]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   13.305350][  T193]  copy_net_ns (net/core/net_namespace.c:579)
[   13.305495][  T193]  create_new_namespaces (kernel/nsproxy.c:132)
[   13.305643][  T193]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   13.305776][  T193]  ksys_unshare (kernel/fork.c:3243)
[   13.306012][  T193]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   13.306170][  T193]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   13.306363][  T193]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   13.306576][  T193]  ? __ia32_sys_open (fs/open.c:1374)
[   13.306934][  T193]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   13.307098][  T193]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   13.307250][  T193]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   13.307452][  T193]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   13.307820][  T193]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   13.308039][  T193]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.308294][  T193] RIP: 0033:0x7fbefaeb1bcb
[   13.308512][  T193] 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
[   13.309129][  T193] RSP: 002b:00007ffecc7d38d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[   13.309424][  T193] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbefaeb1bcb
[   13.309637][  T193] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[   13.309855][  T193] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[   13.310143][  T193] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffecc7d5b00
[   13.310364][  T193] R13: 0000000000000001 R14: 00007fbefabef6f8 R15: 00007ffecc7d6870
| [   13.316518][  T193] ------------[ cut here ]------------
| [   13.316756][  T193] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: ip/193
| [   13.317289][  T193] Modules linked in:
| [   13.318307][  T193] Tainted: [W]=WARN
[   13.318459][  T193] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.318703][  T193] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   13.318888][  T193] 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
[   13.319587][  T193] RSP: 0018:ffa00000009378f8 EFLAGS: 00010286
[   13.319771][  T193] RAX: 00000000ffffffa6 RBX: ff1100000a36dc40 RCX: 1ff4000000126ee5
[   13.319976][  T193] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000a36dcfc
[   13.320186][  T193] RBP: ff1100000a93c000 R08: 1fe220000146dba1 R09: ff1100000f408b80
[   13.320406][  T193] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   13.320620][  T193] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000a93c000
[   13.320830][  T193] FS:  00007fbefabef840(0000) GS:ff110000c9e47000(0000) knlGS:0000000000000000
[   13.321094][  T193] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.321309][  T193] CR2: 0000000000479648 CR3: 0000000004b28003 CR4: 0000000000771ef0
[   13.321562][  T193] PKRU: 55555554
[   13.321678][  T193] Call Trace:
[   13.321781][  T193]  <TASK>
[   13.321853][  T193]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   13.321992][  T193]  ? notifier_call_chain (kernel/notifier.c:85)
[   13.322128][  T193]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   13.322232][  T193]  register_netdevice (net/core/dev.c:11488)
[   13.322375][  T193]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   13.322666][  T193]  ? alloc_netdev_mqs (net/core/dev.c:12133)
[   13.322806][  T193]  __ip_tunnel_create (net/ipv4/ip_tunnel.c:268)
[   13.322954][  T193]  ? ip_tunnel_encap_del_ops (net/ipv4/ip_tunnel.c:479 (discriminator 1))
[   13.323088][  T193]  ? net_generic (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2))
[   13.323315][  T193]  ip_tunnel_init_net (net/ipv4/ip_tunnel.c:1147)
[   13.323474][  T193]  ? ip_tunnel_ctl (net/ipv4/ip_tunnel.c:952)
[   13.323629][  T193]  ? trace_kmalloc (./include/trace/events/kmem.h:57 (discriminator 22))
[   13.323767][  T193]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   13.324011][  T193]  vti_init_net (net/ipv4/ip_vti.c:517)
[   13.324172][  T193]  ops_init (net/core/net_namespace.c:137)
[   13.324276][  T193]  setup_net (net/core/net_namespace.c:446)
[   13.324379][  T193]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   13.324621][  T193]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   13.324769][  T193]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   13.324908][  T193]  copy_net_ns (net/core/net_namespace.c:579)
[   13.325041][  T193]  create_new_namespaces (kernel/nsproxy.c:132)
[   13.325194][  T193]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   13.325428][  T193]  ksys_unshare (kernel/fork.c:3243)
[   13.325573][  T193]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   13.325757][  T193]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   13.325932][  T193]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   13.326263][  T193]  ? __ia32_sys_open (fs/open.c:1374)
[   13.326448][  T193]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   13.326626][  T193]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   13.326805][  T193]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   13.327220][  T193]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   13.327396][  T193]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   13.327579][  T193]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.327919][  T193] RIP: 0033:0x7fbefaeb1bcb
[   13.328104][  T193] 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
[   13.328846][  T193] RSP: 002b:00007ffecc7d38d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[   13.329135][  T193] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbefaeb1bcb
[   13.329333][  T193] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[   13.329636][  T193] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[   13.329869][  T193] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffecc7d5b00
[   13.330165][  T193] R13: 0000000000000001 R14: 00007fbefabef6f8 R15: 00007ffecc7d6870
| [   13.335688][  T193] ------------[ cut here ]------------
| [   13.335842][  T193] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: ip/193
| [   13.336172][  T193] Modules linked in:
| [   13.337121][  T193] Tainted: [W]=WARN
[   13.337223][  T193] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.337413][  T193] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   13.337653][  T193] 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
[   13.338144][  T193] RSP: 0018:ffa0000000937a78 EFLAGS: 00010286
[   13.338318][  T193] RAX: 00000000ffffffa6 RBX: ff1100000a36d000 RCX: 1ff4000000126f15
[   13.338929][  T193] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000a36d0bc
[   13.339235][  T193] RBP: ff110000095d1000 R08: 1fe220000146da19 R09: ff1100000f408b80
[   13.339600][  T193] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   13.339921][  T193] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000095d1000
[   13.340218][  T193] FS:  00007fbefabef840(0000) GS:ff110000c9e47000(0000) knlGS:0000000000000000
[   13.340544][  T193] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.340721][  T193] CR2: 0000000000479648 CR3: 0000000004b28003 CR4: 0000000000771ef0
[   13.340926][  T193] PKRU: 55555554
[   13.341026][  T193] Call Trace:
[   13.341125][  T193]  <TASK>
[   13.341194][  T193]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   13.341335][  T193]  ? notifier_call_chain (kernel/notifier.c:85)
[   13.341542][  T193]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   13.341649][  T193]  register_netdevice (net/core/dev.c:11488)
[   13.341792][  T193]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   13.341959][  T193]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   13.342102][  T193]  register_netdev (net/core/dev.c:11552)
[   13.342234][  T193]  vti6_init_net (net/ipv6/ip6_vti.c:1167)
[   13.342373][  T193]  ops_init (net/core/net_namespace.c:137)
[   13.342534][  T193]  setup_net (net/core/net_namespace.c:446)
[   13.342643][  T193]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   13.342778][  T193]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   13.342918][  T193]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   13.343051][  T193]  copy_net_ns (net/core/net_namespace.c:579)
[   13.343184][  T193]  create_new_namespaces (kernel/nsproxy.c:132)
[   13.343348][  T193]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   13.343543][  T193]  ksys_unshare (kernel/fork.c:3243)
[   13.343679][  T193]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   13.343818][  T193]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   13.343952][  T193]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   13.344083][  T193]  ? __ia32_sys_open (fs/open.c:1374)
[   13.344221][  T193]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   13.344500][  T193]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   13.344647][  T193]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   13.344776][  T193]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   13.344906][  T193]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   13.345050][  T193]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.345258][  T193] RIP: 0033:0x7fbefaeb1bcb
[   13.345509][  T193] 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
[   13.345987][  T193] RSP: 002b:00007ffecc7d38d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[   13.346189][  T193] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbefaeb1bcb
[   13.346391][  T193] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[   13.346778][  T193] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[   13.346978][  T193] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffecc7d5b00
[   13.347171][  T193] R13: 0000000000000001 R14: 00007fbefabef6f8 R15: 00007ffecc7d6870
| [   13.358853][  T193] ------------[ cut here ]------------
| [   13.359080][  T193] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: ip/193
| [   13.359369][  T193] Modules linked in:
| [   13.359893][  T193] Tainted: [W]=WARN
[   13.360043][  T193] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.360259][  T193] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   13.360499][  T193] 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
[   13.361051][  T193] RSP: 0018:ffa0000000937a68 EFLAGS: 00010286
[   13.361271][  T193] RAX: 00000000ffffffa6 RBX: ff1100000c364580 RCX: 1ff4000000126f13
[   13.361532][  T193] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c36463c
[   13.361835][  T193] RBP: ff110000061b1000 R08: 1fe220000186c8c9 R09: ff1100000f408b80
[   13.362081][  T193] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   13.362326][  T193] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000061b1000
[   13.362611][  T193] FS:  00007fbefabef840(0000) GS:ff110000c9dc7000(0000) knlGS:0000000000000000
[   13.362905][  T193] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.363132][  T193] CR2: 00007fbefb075000 CR3: 0000000004b28005 CR4: 0000000000771ef0
[   13.363381][  T193] PKRU: 55555554
[   13.363545][  T193] Call Trace:
[   13.363729][  T193]  <TASK>
[   13.363848][  T193]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   13.364030][  T193]  ? notifier_call_chain (kernel/notifier.c:85)
[   13.364217][  T193]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   13.364368][  T193]  register_netdevice (net/core/dev.c:11488)
[   13.364631][  T193]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   13.364939][  T193]  register_netdev (net/core/dev.c:11552)
[   13.365202][  T193]  sit_init_net (net/ipv6/sit.c:1860)
[   13.365474][  T193]  ops_init (net/core/net_namespace.c:137)
[   13.365658][  T193]  setup_net (net/core/net_namespace.c:446)
[   13.365808][  T193]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   13.366006][  T193]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   13.366223][  T193]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   13.366408][  T193]  copy_net_ns (net/core/net_namespace.c:579)
[   13.366692][  T193]  create_new_namespaces (kernel/nsproxy.c:132)
[   13.366904][  T193]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   13.367085][  T193]  ksys_unshare (kernel/fork.c:3243)
[   13.367267][  T193]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   13.367476][  T193]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   13.367676][  T193]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   13.367861][  T193]  ? __ia32_sys_open (fs/open.c:1374)
[   13.368044][  T193]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   13.368223][  T193]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   13.368404][  T193]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   13.368598][  T193]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   13.368805][  T193]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   13.368986][  T193]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.369229][  T193] RIP: 0033:0x7fbefaeb1bcb
[   13.369419][  T193] 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
[   13.369969][  T193] RSP: 002b:00007ffecc7d38d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[   13.370222][  T193] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbefaeb1bcb
[   13.370483][  T193] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[   13.370755][  T193] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[   13.371034][  T193] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffecc7d5b00
[   13.371312][  T193] R13: 0000000000000001 R14: 00007fbefabef6f8 R15: 00007ffecc7d6870
| [   13.378103][  T193] ------------[ cut here ]------------
| [   13.378289][  T193] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: ip/193
| [   13.379127][  T193] Modules linked in:
| [   13.379781][  T193] Tainted: [W]=WARN
[   13.379986][  T193] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.380260][  T193] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   13.380537][  T193] 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
[   13.381102][  T193] RSP: 0018:ffa0000000937a78 EFLAGS: 00010286
[   13.381321][  T193] RAX: 00000000ffffffa6 RBX: ff1100000c9fbe00 RCX: 1ff4000000126f15
[   13.381585][  T193] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c9fbebc
[   13.381840][  T193] RBP: ff1100001003c000 R08: 1fe220000193f7d9 R09: ff1100000f408b80
[   13.382178][  T193] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[   13.382424][  T193] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100001003c000
[   13.382701][  T193] FS:  00007fbefabef840(0000) GS:ff110000c9dc7000(0000) knlGS:0000000000000000
[   13.382983][  T193] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.383209][  T193] CR2: 00007fbefb075000 CR3: 0000000004b28005 CR4: 0000000000771ef0
[   13.383479][  T193] PKRU: 55555554
[   13.383634][  T193] Call Trace:
[   13.383784][  T193]  <TASK>
[   13.383910][  T193]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   13.384093][  T193]  ? notifier_call_chain (kernel/notifier.c:85)
[   13.384277][  T193]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   13.384453][  T193]  register_netdevice (net/core/dev.c:11488)
[   13.384645][  T193]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   13.384858][  T193]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   13.385049][  T193]  register_netdev (net/core/dev.c:11552)
[   13.385230][  T193]  ip6_tnl_init_net (net/ipv6/ip6_tunnel.c:2346)
[   13.385469][  T193]  ops_init (net/core/net_namespace.c:137)
[   13.385629][  T193]  setup_net (net/core/net_namespace.c:446)
[   13.385778][  T193]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[   13.385978][  T193]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[   13.386162][  T193]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[   13.386345][  T193]  copy_net_ns (net/core/net_namespace.c:579)
[   13.386544][  T193]  create_new_namespaces (kernel/nsproxy.c:132)
[   13.386754][  T193]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[   13.386949][  T193]  ksys_unshare (kernel/fork.c:3243)
[   13.387183][  T193]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   13.387368][  T193]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[   13.387596][  T193]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   13.387796][  T193]  ? __ia32_sys_open (fs/open.c:1374)
[   13.388045][  T193]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[   13.388302][  T193]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   13.388578][  T193]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   13.388843][  T193]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   13.389099][  T193]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   13.389323][  T193]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.389553][  T193] RIP: 0033:0x7fbefaeb1bcb
[   13.389751][  T193] 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
[   13.390274][  T193] RSP: 002b:00007ffecc7d38d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[   13.390540][  T193] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fbefaeb1bcb
[   13.390801][  T193] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[   13.391045][  T193] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[   13.391287][  T193] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffecc7d5b00
[   13.391550][  T193] R13: 0000000000000001 R14: 00007fbefabef6f8 R15: 00007ffecc7d6870
| [   13.435590][  T194] ------------[ cut here ]------------
| [   13.435793][  T194] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: ip/194
| [   13.436037][  T194] Modules linked in:
| [   13.436425][  T194] Tainted: [W]=WARN
[   13.437004][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.437189][  T194] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   13.437374][  T194] 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
[   13.437862][  T194] RSP: 0018:ffa0000000947020 EFLAGS: 00010286
[   13.438031][  T194] RAX: 00000000ffffffa6 RBX: ff1100000a36d700 RCX: 1ff4000000128dca
[   13.438228][  T194] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000a36d7bc
[   13.438430][  T194] RBP: ff1100000933c000 R08: 1fe220000146daf9 R09: ff1100000f40ae58
[   13.438643][  T194] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000001
[   13.438842][  T194] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
[   13.439045][  T194] FS:  00007f7575a80840(0000) GS:ff110000c9e47000(0000) knlGS:0000000000000000
[   13.439284][  T194] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.439462][  T194] CR2: 00007f7575d501a0 CR3: 00000000105a0006 CR4: 0000000000771ef0
[   13.439715][  T194] PKRU: 55555554
[   13.439825][  T194] Call Trace:
[   13.439927][  T194]  <TASK>
[   13.439996][  T194]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   13.440138][  T194]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   13.440239][  T194]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   13.440374][  T194]  __dev_notify_flags (net/core/dev.c:9787)
[   13.440516][  T194]  ? netif_change_name (net/core/dev.c:1495)
[   13.440655][  T194]  ? __dev_change_flags (net/core/dev.c:9752)
[   13.440790][  T194]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   13.440922][  T194]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   13.441059][  T194]  ? 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))
[   13.441196][  T194]  netif_change_flags (net/core/dev.c:9820)
[   13.441331][  T194]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   13.441473][  T194]  do_setlink.isra.0 (net/core/rtnetlink.c:3206 (discriminator 1))
[   13.441617][  T194]  ? rtnl_link_get_size (net/core/rtnetlink.c:716)
[   13.441756][  T194]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[   13.441925][  T194]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.442062][  T194]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   13.442197][  T194]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.442335][  T194]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.442478][  T194]  ? __kernel_text_address (kernel/extable.c:79)
[   13.442621][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   13.442758][  T194]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   13.442891][  T194]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:341 net/core/rtnetlink.c:4149)
[   13.443028][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   13.443161][  T194]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   13.443293][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   13.443426][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   13.443568][  T194]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 22))
[   13.443710][  T194]  ? __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)
[   13.443848][  T194]  ? __mutex_lock (kernel/locking/mutex.c:798 (discriminator 1) kernel/locking/mutex.c:820 (discriminator 1))
[   13.444000][  T194]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:341 net/core/rtnetlink.c:4149)
[   13.444141][  T194]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   13.444277][  T194]  ? __rtnl_newlink (net/core/rtnetlink.c:4000)
[   13.444413][  T194]  rtnl_newlink (net/core/rtnetlink.c:4150)
[   13.444559][  T194]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   13.444700][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   13.444833][  T194]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[   13.444967][  T194]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   13.445099][  T194]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   13.445238][  T194]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   13.445371][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   13.445513][  T194]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[   13.445651][  T194]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   13.445787][  T194]  ? __rtnl_newlink (net/core/rtnetlink.c:4027 (discriminator 1))
[   13.445924][  T194]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7061)
[   13.446059][  T194]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   13.446198][  T194]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.446334][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   13.446477][  T194]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   13.446618][  T194]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   13.446752][  T194]  netlink_rcv_skb (net/netlink/af_netlink.c:2551)
[   13.446889][  T194]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.447026][  T194]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.447165][  T194]  ? 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))
[   13.447301][  T194]  ? 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))
[   13.447442][  T194]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.447580][  T194]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.447747][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   13.447883][  T194]  netlink_sendmsg (net/netlink/af_netlink.c:1895)
[   13.448018][  T194]  ? netlink_unicast (./include/net/net_namespace.h:419 (discriminator 7))
[   13.448151][  T194]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   13.448289][  T194]  ____sys_sendmsg (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2698 (discriminator 4))
[   13.448422][  T194]  ? copy_msghdr_from_user (net/socket.c:2635)
[   13.448561][  T194]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5349)
[   13.448731][  T194]  ? move_addr_to_kernel (net/socket.c:258)
[   13.448864][  T194]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.448998][  T194]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   13.449133][  T194]  ___sys_sendmsg (net/socket.c:2752)
[   13.449269][  T194]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3131)
[   13.449442][  T194]  ? copy_msghdr_from_user (net/socket.c:2603)
[   13.449591][  T194]  __sys_sendmsg (net/socket.c:2784)
[   13.449733][  T194]  ? __sys_sendmsg_sock (net/socket.c:2765)
[   13.449866][  T194]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3156 (discriminator 6))
[   13.450036][  T194]  ? 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)
[   13.450171][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   13.450310][  T194]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   13.450450][  T194]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   13.450588][  T194]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   13.450727][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.450894][  T194] RIP: 0033:0x7f7575cba08e
[   13.451036][  T194] 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
[   13.451522][  T194] RSP: 002b:00007ffc2a1161d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.451732][  T194] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f7575cba08e
[   13.451931][  T194] RDX: 0000000000000000 RSI: 00007ffc2a116280 RDI: 0000000000000005
[   13.452131][  T194] RBP: 00007ffc2a1161e0 R08: 0000000000000000 R09: 0000000000000000
[   13.452335][  T194] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a10caa2
[   13.452542][  T194] R13: 000000000049f620 R14: 0000000000000000 R15: 00007ffc2a116950
| [  254.407755][   T12] ------------[ cut here ]------------
| [  254.408027][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: 0/12
| [  254.408335][   T12] Modules linked in:
| [  254.408914][   T12] Tainted: [W]=WARN
[  254.409147][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  254.409371][   T12] Workqueue: netns cleanup_net
[  254.409605][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  254.409819][   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
[  254.410415][   T12] RSP: 0018:ffa00000000c7938 EFLAGS: 00010286
[  254.410657][   T12] RAX: 00000000ffffffa6 RBX: ff110000106bec80 RCX: 1ff4000000018eed
[  254.410896][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff110000106bed3c
[  254.411140][   T12] RBP: ff1100001003c000 R08: 1fe22000020d7da9 R09: ff11000001aed1d0
[  254.411397][   T12] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[  254.411660][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  254.411910][   T12] FS:  0000000000000000(0000) GS:ff110000c9dc7000(0000) knlGS:0000000000000000
[  254.412185][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  254.412511][   T12] CR2: 000055dd3c51cd5c CR3: 000000007b54d006 CR4: 0000000000771ef0
[  254.412745][   T12] PKRU: 55555554
[  254.412886][   T12] Call Trace:
[  254.413025][   T12]  <TASK>
[  254.413144][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  254.413352][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  254.413590][   T12]  ? queue_rcu_work (./include/linux/rcupdate.h:125 kernel/workqueue.c:2686)
[  254.413767][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[  254.413939][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[  254.414117][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[  254.414316][   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)
[  254.414526][   T12]  ops_undo_list (net/core/net_namespace.c:187 net/core/net_namespace.c:248)
[  254.414698][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[  254.414878][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  254.415054][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  254.415234][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  254.415403][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  254.415592][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  254.415776][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  254.415951][   T12]  process_one_work (kernel/workqueue.c:3314)
[  254.416146][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  254.416324][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  254.416530][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  254.416716][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  254.416888][   T12]  kthread (kernel/kthread.c:436)
[  254.417029][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  254.417245][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.417415][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  254.417638][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  254.417927][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  254.418171][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.418405][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  254.422191][   T12] ------------[ cut here ]------------
| [  254.422383][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: 0/12
| [  254.422689][   T12] Modules linked in:
| [  254.423278][   T12] Tainted: [W]=WARN
[  254.423418][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  254.423649][   T12] Workqueue: netns cleanup_net
[  254.423829][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  254.424044][   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
[  254.424764][   T12] RSP: 0018:ffa00000000c7938 EFLAGS: 00010286
[  254.424967][   T12] RAX: 00000000ffffffa6 RBX: ff1100000b62b540 RCX: 1ff4000000018eed
[  254.425290][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b62b5fc
[  254.425537][   T12] RBP: ff110000061b1000 R08: 1fe22000016c56c1 R09: ff11000001aed1d0
[  254.425778][   T12] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[  254.426004][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  254.426400][   T12] FS:  0000000000000000(0000) GS:ff110000c9dc7000(0000) knlGS:0000000000000000
[  254.426678][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  254.426974][   T12] CR2: 000055dd3c51cd5c CR3: 000000007b54d006 CR4: 0000000000771ef0
[  254.427225][   T12] PKRU: 55555554
[  254.427364][   T12] Call Trace:
[  254.427591][   T12]  <TASK>
[  254.427707][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  254.427949][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  254.428162][   T12]  ? queue_rcu_work (./include/linux/rcupdate.h:125 kernel/workqueue.c:2686)
[  254.428346][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[  254.428544][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[  254.428714][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[  254.428891][   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)
[  254.429077][   T12]  ops_undo_list (net/core/net_namespace.c:187 net/core/net_namespace.c:248)
[  254.429254][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[  254.429457][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  254.429637][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  254.429819][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  254.430072][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  254.430251][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  254.430597][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  254.430827][   T12]  process_one_work (kernel/workqueue.c:3314)
[  254.431008][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  254.431187][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  254.431372][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  254.431572][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  254.431754][   T12]  kthread (kernel/kthread.c:436)
[  254.431944][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  254.432220][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.432394][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  254.432579][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  254.432777][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  254.432952][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.433131][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  254.437914][   T12] ------------[ cut here ]------------
| [  254.438109][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: 0/12
| [  254.438397][   T12] Modules linked in:
| [  254.439836][   T12] Tainted: [W]=WARN
[  254.440027][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  254.440283][   T12] Workqueue: netns cleanup_net
[  254.440524][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  254.440781][   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
[  254.441322][   T12] RSP: 0018:ffa00000000c7938 EFLAGS: 00010286
[  254.441586][   T12] RAX: 00000000ffffffa6 RBX: ff11000009486e40 RCX: 1ff4000000018eed
[  254.441881][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000009486efc
[  254.442172][   T12] RBP: ff110000095d1000 R08: 1fe2200001290de1 R09: ff11000001aed1d0
[  254.442477][   T12] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[  254.442781][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  254.443076][   T12] FS:  0000000000000000(0000) GS:ff110000c9dc7000(0000) knlGS:0000000000000000
[  254.443382][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  254.443644][   T12] CR2: 000055dd3c51cd5c CR3: 000000007b54d006 CR4: 0000000000771ef0
[  254.443929][   T12] PKRU: 55555554
[  254.444139][   T12] Call Trace:
[  254.444411][   T12]  <TASK>
[  254.444597][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  254.444935][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  254.445197][   T12]  ? queue_rcu_work (./include/linux/rcupdate.h:125 kernel/workqueue.c:2686)
[  254.445493][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[  254.445734][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[  254.446010][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[  254.446265][   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)
[  254.446512][   T12]  ops_undo_list (net/core/net_namespace.c:187 net/core/net_namespace.c:248)
[  254.446732][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[  254.446981][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  254.447263][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  254.447468][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  254.447649][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  254.447822][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  254.447990][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  254.448179][   T12]  process_one_work (kernel/workqueue.c:3314)
[  254.448357][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  254.448541][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  254.448715][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  254.448905][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  254.449081][   T12]  kthread (kernel/kthread.c:436)
[  254.449223][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  254.449426][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.449620][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  254.449805][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  254.450008][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  254.450189][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.450362][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  254.453682][   T12] ------------[ cut here ]------------
| [  254.453895][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12
| [  254.454244][   T12] Modules linked in:
| [  254.454805][   T12] Tainted: [W]=WARN
[  254.454938][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  254.455154][   T12] Workqueue: netns cleanup_net
[  254.455325][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  254.455565][   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
[  254.456211][   T12] RSP: 0018:ffa00000000c7938 EFLAGS: 00010286
[  254.456454][   T12] RAX: 00000000ffffffa6 RBX: ff1100000c364740 RCX: 1ff4000000018eed
[  254.456728][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000c3647fc
[  254.456989][   T12] RBP: ff1100000a93c000 R08: 1fe220000186c901 R09: ff11000001aed1d0
[  254.457267][   T12] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[  254.457557][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  254.457814][   T12] FS:  0000000000000000(0000) GS:ff110000c9cc7000(0000) knlGS:0000000000000000
[  254.458113][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  254.458319][   T12] CR2: 00007f840281b680 CR3: 000000007b54d005 CR4: 0000000000771ef0
[  254.458693][   T12] PKRU: 55555554
[  254.458816][   T12] Call Trace:
[  254.458941][   T12]  <TASK>
[  254.459029][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  254.459250][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  254.459539][   T12]  ? queue_rcu_work (./include/linux/rcupdate.h:125 kernel/workqueue.c:2686)
[  254.459712][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[  254.459879][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[  254.460117][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[  254.460283][   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)
[  254.460530][   T12]  ops_undo_list (net/core/net_namespace.c:187 net/core/net_namespace.c:248)
[  254.460705][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[  254.460865][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  254.461033][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  254.461206][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  254.461379][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  254.461697][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  254.461868][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  254.462049][   T12]  process_one_work (kernel/workqueue.c:3314)
[  254.462238][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  254.462416][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  254.462708][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  254.462892][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  254.463077][   T12]  kthread (kernel/kthread.c:436)
[  254.463219][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  254.463560][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.463724][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  254.463903][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  254.464112][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  254.464420][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.466048][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  254.471383][   T12] ------------[ cut here ]------------
| [  254.471554][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 0/12
| [  254.471817][   T12] Modules linked in:
| [  254.472214][   T12] Tainted: [W]=WARN
[  254.472312][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  254.472478][   T12] Workqueue: netns cleanup_net
[  254.472619][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  254.472788][   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
[  254.473353][   T12] RSP: 0018:ffa00000000c7938 EFLAGS: 00010286
[  254.473521][   T12] RAX: 00000000ffffffa6 RBX: ff11000009486c80 RCX: 1ff4000000018eed
[  254.473725][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff11000009486d3c
[  254.473906][   T12] RBP: ff11000008b8c000 R08: 1fe2200001290da9 R09: ff11000001aed1d0
[  254.474090][   T12] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[  254.474269][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  254.474459][   T12] FS:  0000000000000000(0000) GS:ff110000c9e47000(0000) knlGS:0000000000000000
[  254.474675][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  254.474830][   T12] CR2: 00007f0b245efc40 CR3: 000000007b54d006 CR4: 0000000000771ef0
[  254.475026][   T12] PKRU: 55555554
[  254.475144][   T12] Call Trace:
[  254.475238][   T12]  <TASK>
[  254.475313][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  254.475478][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  254.475659][   T12]  ? queue_rcu_work (./include/linux/rcupdate.h:125 kernel/workqueue.c:2686)
[  254.475785][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[  254.475912][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[  254.476043][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[  254.476178][   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)
[  254.476302][   T12]  ops_undo_list (net/core/net_namespace.c:187 net/core/net_namespace.c:248)
[  254.476429][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[  254.476554][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  254.476678][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  254.476815][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  254.476939][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  254.477070][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  254.477191][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  254.477317][   T12]  process_one_work (kernel/workqueue.c:3314)
[  254.477447][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  254.477569][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  254.477694][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  254.477821][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  254.477945][   T12]  kthread (kernel/kthread.c:436)
[  254.478039][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  254.478198][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.478318][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  254.478594][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  254.478744][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  254.478865][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.478984][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  254.497268][   T12] ------------[ cut here ]------------
| [  254.497451][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 0/12
| [  254.497705][   T12] Modules linked in:
| [  254.498109][   T12] Tainted: [W]=WARN
[  254.498208][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  254.498368][   T12] Workqueue: netns cleanup_net
[  254.498531][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  254.498698][   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
[  254.499184][   T12] RSP: 0018:ffa00000000c7748 EFLAGS: 00010286
[  254.499349][   T12] RAX: 00000000ffffffa6 RBX: ff110000094878c0 RCX: 1ff4000000018eaf
[  254.499549][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000948797c
[  254.499741][   T12] RBP: ff1100000933c000 R08: 1fe2200001290f31 R09: ff11000001aed1d0
[  254.499929][   T12] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000041
[  254.500124][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: ffa00000000c77e0
[  254.500315][   T12] FS:  0000000000000000(0000) GS:ff110000c9e47000(0000) knlGS:0000000000000000
[  254.500550][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  254.500733][   T12] CR2: 00007f0b245efc40 CR3: 000000007b54d006 CR4: 0000000000771ef0
[  254.500928][   T12] PKRU: 55555554
[  254.501023][   T12] Call Trace:
[  254.501145][   T12]  <TASK>
[  254.501220][   T12]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[  254.501350][   T12]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[  254.501450][   T12]  netif_close_many (net/core/dev.c:1804)
[  254.501580][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  254.501707][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  254.501835][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  254.501962][   T12]  ? __dev_close_many (net/core/dev.c:1781)
[  254.502355][   T12]  ? netif_close_many_and_unlock (net/core/dev.c:12330)
[  254.502547][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12406)
[  254.502703][   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)
[  254.502830][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[  254.502955][   T12]  ? default_device_exit_net (net/core/dev.c:13033 (discriminator 1))
[  254.503113][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  254.503294][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[  254.503458][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  254.503609][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[  254.503757][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[  254.503902][   T12]  ? fou_exit_net (net/ipv4/fou_core.c:1228)
[  254.504050][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  254.504201][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[  254.504340][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  254.504493][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  254.504644][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  254.504798][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  254.504952][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  254.505109][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  254.505252][   T12]  process_one_work (kernel/workqueue.c:3314)
[  254.505393][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  254.505556][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  254.505705][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  254.505851][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  254.505997][   T12]  kthread (kernel/kthread.c:436)
[  254.506131][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  254.506310][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.506452][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  254.506587][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  254.506755][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  254.506889][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.507023][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [  254.518007][   T12] ------------[ cut here ]------------
| [  254.518243][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 0/12
| [  254.518578][   T12] Modules linked in:
| [  254.519029][   T12] Tainted: [W]=WARN
[  254.519149][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  254.519337][   T12] Workqueue: netns cleanup_net
[  254.519499][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[  254.519696][   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
[  254.520235][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[  254.520418][   T12] RAX: 00000000ffffffa6 RBX: ff1100000b9e0740 RCX: 1ff4000000018ed5
[  254.520662][   T12] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ff1100000b9e07fc
[  254.520890][   T12] RBP: ff1100000933c000 R08: 1fe220000173c101 R09: ff11000001aed1d0
[  254.521123][   T12] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[  254.521348][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[  254.521591][   T12] FS:  0000000000000000(0000) GS:ff110000c9e47000(0000) knlGS:0000000000000000
[  254.521851][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  254.522032][   T12] CR2: 00007f0b245efc40 CR3: 000000007b54d006 CR4: 0000000000771ef0
[  254.522245][   T12] PKRU: 55555554
[  254.522358][   T12] Call Trace:
[  254.522477][   T12]  <TASK>
[  254.522561][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[  254.522756][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[  254.522943][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[  254.523116][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[  254.523271][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[  254.523426][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[  254.523573][   T12]  ? fou_exit_net (net/ipv4/fou_core.c:1228)
[  254.523711][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[  254.523851][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[  254.523995][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  254.524144][   T12]  cleanup_net (net/core/net_namespace.c:702)
[  254.524281][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  254.524417][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  254.524580][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  254.524723][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  254.524865][   T12]  process_one_work (kernel/workqueue.c:3314)
[  254.525015][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  254.525174][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  254.525319][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  254.525475][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  254.525621][   T12]  kthread (kernel/kthread.c:436)
[  254.525726][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  254.525912][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[  254.526071][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  254.526247][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  254.526419][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  254.526557][   T12]  ? kthread_affine_node (kernel/kthread.c:378)


Finger prints:
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: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