======================================
| xx__-> [    9.587433][  T165] ------------[ cut here ]------------
| [    9.587764][  T165] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: psample.sh/165
| [    9.588154][  T165] Modules linked in: netdevsim
| [    9.588815][  T165] Tainted: [W]=WARN
[    9.588949][  T165] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.589173][  T165] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.589401][  T165] 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 a8 cc 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 a8 cc f0 ff       	call   0xfffffffffff0cce4
  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 a8 cc f0 ff       	call   0xfffffffffff0ccba
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.590025][  T165] RSP: 0018:ffa00000007d74f8 EFLAGS: 00010286
[    9.590251][  T165] RAX: 00000000ffffffa6 RBX: ff1100000aea5840 RCX: 1ff40000000fae65
[    9.590510][  T165] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000aea58f0
[    9.590774][  T165] RBP: ff1100000212a000 R08: 1fe22000015d4b1f R09: ff11000004c52f48
[    9.591026][  T165] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[    9.591283][  T165] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000212a000
[    9.591544][  T165] FS:  00007f05c63b9b80(0000) GS:ff110000a5185000(0000) knlGS:0000000000000000
[    9.591847][  T165] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.592060][  T165] CR2: 0000562eb0b8f850 CR3: 000000000ade6002 CR4: 0000000000771ef0
[    9.592315][  T165] PKRU: 55555554
[    9.592446][  T165] Call Trace:
[    9.592581][  T165]  <TASK>
[    9.592669][  T165]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.592841][  T165]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.592969][  T165]  register_netdevice (net/core/dev.c:11488)
[    9.593144][  T165]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.593354][  T165]  ? __debugfs_create_file (fs/debugfs/inode.c:412 fs/debugfs/inode.c:452)
[    9.593532][  T165] nsim_init_netdevsim (drivers/net/netdevsim/netdev.c:1069) netdevsim
[    9.593747][  T165] nsim_create (drivers/net/netdevsim/netdev.c:1151) netdevsim
[    9.593916][  T165] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1509) netdevsim
[    9.594129][  T165]  ? add_timer_on (kernel/time/timer.c:925 (discriminator 5))
[    9.594305][  T165]  ? nsim_dev_get_vfs (drivers/net/netdevsim/dev.c:65) netdevsim
[    9.594523][  T165]  ? is_module_address (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) kernel/module/main.c:3876 (discriminator 2))
[    9.594697][  T165]  ? static_obj (kernel/locking/lockdep.c:858)
[    9.594826][  T165]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[    9.594998][  T165]  ? nsim_dev_hwstats_init (./include/linux/workqueue.h:713 ./include/linux/workqueue.h:855 drivers/net/netdevsim/hwstats.c:439) netdevsim
[    9.595216][  T165] nsim_drv_probe (drivers/net/netdevsim/dev.c:1570 drivers/net/netdevsim/dev.c:1731) netdevsim
[    9.595386][  T165]  ? driver_sysfs_add (drivers/base/dd.c:495)
[    9.595561][  T165]  call_driver_probe (drivers/base/dd.c:629)
[    9.595730][  T165]  really_probe (drivers/base/dd.c:709)
[    9.595898][  T165]  ? driver_probe_device (drivers/base/dd.c:135)
[    9.596063][  T165]  __driver_probe_device (drivers/base/dd.c:871)
[    9.596234][  T165]  driver_probe_device (drivers/base/dd.c:901)
[    9.596402][  T165]  __device_attach_driver (drivers/base/dd.c:1029)
[    9.596578][  T165]  bus_for_each_drv (drivers/base/bus.c:500)
[    9.596748][  T165]  ? bus_find_device_reverse (drivers/base/bus.c:442)
[    9.596919][  T165]  __device_attach (drivers/base/dd.c:1101)
[    9.597085][  T165]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.597255][  T165]  ? __driver_attach_async_helper (drivers/base/dd.c:1172 (discriminator 1))
[    9.597463][  T165]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    9.597637][  T165]  ? _raw_spin_unlock (./include/linux/spinlock_api_smp.h:169 (discriminator 1) kernel/locking/spinlock.c:190 (discriminator 1))
[    9.597808][  T165]  device_initial_probe (drivers/base/dd.c:1156)
[    9.597977][  T165]  bus_probe_device (drivers/base/bus.c:613)
[    9.598149][  T165]  device_add (drivers/base/core.c:3706)
[    9.598319][  T165]  ? __fw_devlink_link_to_consumers.isra.0 (./include/linux/property.h:226 (discriminator 3))
[    9.598563][  T165]  ? __init_waitqueue_head (kernel/sched/wait.c:12)
[    9.598740][  T165]  ? pm_runtime_init (drivers/base/power/runtime.c:1859)
[    9.598916][  T165] new_device_store (drivers/net/netdevsim/bus.c:471 drivers/net/netdevsim/bus.c:191) netdevsim
[    9.599132][  T165]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[    9.599309][  T165]  ? new_port_store (drivers/net/netdevsim/bus.c:99) netdevsim
[    9.599529][  T165]  ? sysfs_file_kobj (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) fs/sysfs/file.c:24 (discriminator 2))
[    9.599701][  T165]  ? sysfs_file_kobj (./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1181 fs/sysfs/file.c:24)
[    9.599873][  T165]  ? sysfs_file_ops (fs/sysfs/file.c:38 (discriminator 1))
[    9.600045][  T165]  kernfs_fop_write_iter (fs/kernfs/file.c:352)
[    9.600222][  T165]  ? kernfs_ops (fs/kernfs/file.c:128)
[    9.600355][  T165]  new_sync_write (fs/read_write.c:595)
[    9.600531][  T165]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[    9.600700][  T165]  ? new_sync_read (./include/linux/ioprio.h:41)
[    9.600867][  T165]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[    9.601034][  T165]  ? ksys_write (fs/read_write.c:740)
[    9.601210][  T165]  vfs_write (fs/read_write.c:688)
[    9.601338][  T165]  ksys_write (fs/read_write.c:740)
[    9.601468][  T165]  ? __ia32_sys_read (fs/read_write.c:724)
[    9.601656][  T165]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.601823][  T165]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.601993][  T165]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.602167][  T165]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.602333][  T165]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.602500][  T165]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.602712][  T165] RIP: 0033:0x7f05c642b08e
[    9.602888][  T165] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 94 bd 00 00       	call   0xbd9c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[    9.603477][  T165] RSP: 002b:00007ffed52822f0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[    9.603735][  T165] RAX: ffffffffffffffda RBX: 00007f05c65ad580 RCX: 00007f05c642b08e
[    9.603987][  T165] RDX: 0000000000000007 RSI: 0000556fd9037bb0 RDI: 0000000000000001
[    9.604238][  T165] RBP: 00007ffed5282300 R08: 0000000000000000 R09: 0000000000000000
[    9.604485][  T165] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000007
[    9.604738][  T165] R13: 0000000000000007 R14: 0000556fd9037bb0 R15: 0000000000000000
| [    9.646029][  T187] ------------[ cut here ]------------
| [    9.646264][  T187] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: ip/187
| [    9.646512][  T187] Modules linked in: netdevsim
| [    9.647181][  T187] Tainted: [W]=WARN
[    9.647288][  T187] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.647464][  T187] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.647730][  T187] 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 a8 cc 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 a8 cc f0 ff       	call   0xfffffffffff0cce4
  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 a8 cc f0 ff       	call   0xfffffffffff0ccba
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.648219][  T187] RSP: 0018:ffa0000000647aa8 EFLAGS: 00010286
[    9.648388][  T187] RAX: 00000000ffffffa6 RBX: ff1100000aea47c0 RCX: 1ff40000000c8f1b
[    9.648594][  T187] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000aea4870
[    9.648796][  T187] RBP: ff110000058bc000 R08: 1fe22000015d490f R09: ff1100000d635180
[    9.648996][  T187] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[    9.649201][  T187] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000058bc000
[    9.649408][  T187] FS:  00007fdaac861840(0000) GS:ff110000a5305000(0000) knlGS:0000000000000000
[    9.649659][  T187] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.649834][  T187] CR2: 0000000000479648 CR3: 000000000973f004 CR4: 0000000000771ef0
[    9.650035][  T187] PKRU: 55555554
[    9.650136][  T187] Call Trace:
[    9.650243][  T187]  <TASK>
[    9.650316][  T187]  ? ip6_route_dev_notify (net/ipv6/route.c:6484)
[    9.650452][  T187]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.650596][  T187]  ? notifier_call_chain (kernel/notifier.c:85)
[    9.650733][  T187]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.650835][  T187]  register_netdevice (net/core/dev.c:11488)
[    9.650972][  T187]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.651148][  T187]  register_netdev (net/core/dev.c:11552)
[    9.651281][  T187]  loopback_net_init (drivers/net/loopback.c:218)
[    9.651415][  T187]  ops_init (net/core/net_namespace.c:137)
[    9.651522][  T187]  setup_net (net/core/net_namespace.c:446)
[    9.651624][  T187]  ? unregister_pernet_device (net/core/net_namespace.c:1503)
[    9.651757][  T187]  ? lockdep_init_map_type (kernel/locking/lockdep.c:4973)
[    9.651893][  T187]  ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185)
[    9.652029][  T187]  copy_net_ns (net/core/net_namespace.c:579)
[    9.652167][  T187]  create_new_namespaces (kernel/nsproxy.c:132)
[    9.652304][  T187]  unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4))
[    9.652438][  T187]  ksys_unshare (kernel/fork.c:3243)
[    9.652584][  T187]  ? walk_process_tree (kernel/fork.c:3036 (discriminator 19))
[    9.652718][  T187]  ? __ia32_sys_open (fs/open.c:1374)
[    9.652855][  T187]  __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315)
[    9.652988][  T187]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[    9.653120][  T187]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.653257][  T187]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.653392][  T187]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.653563][  T187]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.653732][  T187] RIP: 0033:0x7fdaacb23bcb
[    9.653877][  T187] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 2d 82 0f 00 	mov    0xf822d(%rip),%rcx        # 0xf8237
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf8237
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d fd 81 0f 00 	mov    0xf81fd(%rip),%rcx        # 0xf820d
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[    9.654386][  T187] RSP: 002b:00007fff83d17a38 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
[    9.654597][  T187] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fdaacb23bcb
[    9.654798][  T187] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    9.654999][  T187] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[    9.655204][  T187] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff83d19c60
[    9.655406][  T187] R13: 0000000000000001 R14: 00007fdaac8616f8 R15: 00007fff83d1b846
| [    9.696813][  T188] ------------[ cut here ]------------
| [    9.697113][  T188] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: devlink/188
| [    9.697646][  T188] Modules linked in: netdevsim
| [    9.698151][  T188] Tainted: [W]=WARN
[    9.698273][  T188] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.698473][  T188] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.698686][  T188] 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 a8 cc 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 a8 cc f0 ff       	call   0xfffffffffff0cce4
  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 a8 cc f0 ff       	call   0xfffffffffff0ccba
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.699240][  T188] RSP: 0018:ffa00000005b7310 EFLAGS: 00010286
[    9.699434][  T188] RAX: 00000000ffffffa6 RBX: ff11000008df70c0 RCX: 1ff40000000b6e28
[    9.699671][  T188] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff11000008df7170
[    9.699903][  T188] RBP: ff1100000212a000 R08: 1fe22000011bee2f R09: ff11000004db8bd0
[    9.700133][  T188] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[    9.700367][  T188] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[    9.700606][  T188] FS:  00007f43cfeb7840(0000) GS:ff110000a5305000(0000) knlGS:0000000000000000
[    9.700879][  T188] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.701070][  T188] CR2: 00007f43d00c17d0 CR3: 000000000c27d006 CR4: 0000000000771ef0
[    9.701307][  T188] PKRU: 55555554
[    9.701421][  T188] Call Trace:
[    9.701544][  T188]  <TASK>
[    9.701623][  T188]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[    9.701819][  T188]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[    9.702007][  T188]  ? nsim_destroy (drivers/net/netdevsim/netdev.c:1188) netdevsim
[    9.702167][  T188]  ? netdev_run_todo (net/core/dev.c:11703)
[    9.702319][  T188]  ? 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)
[    9.702473][  T188]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[    9.702634][  T188]  ? rtnl_net_dev_lock (./include/linux/rtnetlink.h:130 net/core/dev.c:2162)
[    9.702785][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.702937][  T188]  ? unregister_netdevice_many (net/core/dev.c:12497)
[    9.703091][  T188] nsim_destroy (./include/linux/netdevice.h:3455 drivers/net/netdevsim/netdev.c:1193) netdevsim
[    9.703247][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.703401][  T188] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:1547) netdevsim
[    9.703598][  T188] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1561 drivers/net/netdevsim/dev.c:1785) netdevsim
[    9.703794][  T188] nsim_dev_reload_down (drivers/net/netdevsim/dev.c:1038) netdevsim
[    9.703990][  T188]  devlink_reload (net/devlink/dev.c:462)
[    9.704149][  T188]  ? devlink_notify_unregister (net/devlink/dev.c:308)
[    9.704306][  T188]  ? fdget (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:49 fs/file.c:1196 fs/file.c:1210)
[    9.704423][  T188]  ? ns_capable (./include/linux/security.h:701 kernel/capability.c:342 kernel/capability.c:363)
[    9.704544][  T188]  devlink_nl_reload_doit (net/devlink/dev.c:585)
[    9.704698][  T188]  ? devlink_get_from_attrs_lock (net/devlink/devl_internal.h:112 net/devlink/devl_internal.h:118 net/devlink/netlink.c:235)
[    9.704887][  T188]  ? __nla_validate_parse (lib/nlattr.c:635)
[    9.705039][  T188]  ? devlink_reload (./include/net/net_namespace.h:412 (discriminator 8))
[    9.705195][  T188]  ? __nla_parse (lib/nlattr.c:732)
[    9.705348][  T188]  genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114)
[    9.705500][  T188]  ? genl_family_rcv_msg_attrs_parse.isra.0 (./include/net/netlink.h:785 (discriminator 2))
[    9.705694][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.705848][  T188]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.706006][  T188]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[    9.706169][  T188]  genl_family_rcv_msg (net/netlink/genetlink.c:1194)
[    9.706325][  T188]  ? genl_family_rcv_msg_dumpit (net/netlink/genetlink.c:1079)
[    9.706535][  T188]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[    9.706731][  T188]  ? devlink_nl_pre_doit_port (net/devlink/netlink.c:262)
[    9.706890][  T188]  ? devlink_reload (./include/net/net_namespace.h:412 (discriminator 8))
[    9.707064][  T188]  ? devlink_nl_post_doit (net/devlink/netlink.c:307)
[    9.707224][  T188]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[    9.707400][  T188]  genl_rcv_msg (net/netlink/genetlink.c:1209)
[    9.707644][  T188]  netlink_rcv_skb (net/netlink/af_netlink.c:2551)
[    9.707864][  T188]  ? genl_family_rcv_msg (net/netlink/genetlink.c:1136 (discriminator 2))
[    9.708016][  T188]  ? netlink_ack (./include/linux/skbuff.h:2718)
[    9.708177][  T188]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[    9.708332][  T188]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[    9.708485][  T188]  genl_rcv (net/netlink/genetlink.c:1218)
[    9.708690][  T188]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[    9.708843][  T188]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[    9.708992][  T188]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[    9.709152][  T188]  netlink_sendmsg (net/netlink/af_netlink.c:1895)
[    9.709305][  T188]  ? netlink_unicast (./include/net/net_namespace.h:419 (discriminator 7))
[    9.709458][  T188]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[    9.709680][  T188]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[    9.709834][  T188]  __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[    9.709991][  T188]  ? __ia32_sys_getpeername (net/socket.c:2219)
[    9.710148][  T188]  ? build_open_flags (fs/open.c:1212)
[    9.710305][  T188]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    9.710460][  T188]  ? __ia32_sys_open (fs/open.c:1374)
[    9.710679][  T188]  __x64_sys_sendto (net/socket.c:2272 net/socket.c:2268 net/socket.c:2268)
[    9.710829][  T188]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.711022][  T188]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[    9.711187][  T188]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[    9.711349][  T188]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.711508][  T188]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.711744][  T188]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.711910][  T188]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.712115][  T188] RIP: 0033:0x7f43d00f108e
[    9.712285][  T188] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 94 bd 00 00       	call   0xbd9c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[    9.712930][  T188] RSP: 002b:00007ffc41e29ca0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[    9.713178][  T188] RAX: ffffffffffffffda RBX: 0000000026614980 RCX: 00007f43d00f108e
[    9.713422][  T188] RDX: 0000000000000040 RSI: 0000000026614ba0 RDI: 0000000000000005
[    9.713736][  T188] RBP: 00007ffc41e29cb0 R08: 00007f43d03a5980 R09: 000000000000000c
[    9.713971][  T188] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000040cd80
[    9.714218][  T188] R13: 0000000026614980 R14: 0000000000000000 R15: 0000000000000001
| [    9.776186][  T188] ------------[ cut here ]------------
| [    9.776393][  T188] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: devlink/188
| [    9.777809][  T188] Modules linked in: netdevsim
| [    9.778485][  T188] Tainted: [W]=WARN
[    9.778619][  T188] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.778817][  T188] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    9.779037][  T188] 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 a8 cc 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 a8 cc f0 ff       	call   0xfffffffffff0cce4
  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 a8 cc f0 ff       	call   0xfffffffffff0ccba
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    9.779609][  T188] RSP: 0018:ffa00000005b7268 EFLAGS: 00010286
[    9.779814][  T188] RAX: 00000000ffffffa6 RBX: ff1100000b6c6940 RCX: 1ff40000000b6e13
[    9.780050][  T188] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000b6c69f0
[    9.780302][  T188] RBP: ff11000004f5a000 R08: 1fe22000016d8d3f R09: ff11000004db8bd0
[    9.780548][  T188] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[    9.780783][  T188] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000004f5a000
[    9.781022][  T188] FS:  00007f43cfeb7840(0000) GS:ff110000a5205000(0000) knlGS:0000000000000000
[    9.781311][  T188] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.781509][  T188] CR2: 0000562ecd898a38 CR3: 000000000c27d004 CR4: 0000000000771ef0
[    9.781750][  T188] PKRU: 55555554
[    9.781868][  T188] Call Trace:
[    9.781986][  T188]  <TASK>
[    9.782069][  T188]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[    9.782232][  T188]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[    9.782355][  T188]  register_netdevice (net/core/dev.c:11488)
[    9.782512][  T188]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[    9.782714][  T188]  ? __debugfs_create_file (fs/debugfs/inode.c:412 fs/debugfs/inode.c:452)
[    9.782875][  T188] nsim_init_netdevsim (drivers/net/netdevsim/netdev.c:1069) netdevsim
[    9.783081][  T188] nsim_create (drivers/net/netdevsim/netdev.c:1151) netdevsim
[    9.783245][  T188] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1509) netdevsim
[    9.783443][  T188]  ? add_timer_on (kernel/time/timer.c:925 (discriminator 5))
[    9.783608][  T188]  ? nsim_dev_get_vfs (drivers/net/netdevsim/dev.c:65) netdevsim
[    9.783804][  T188]  ? is_module_address (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) kernel/module/main.c:3876 (discriminator 2))
[    9.783959][  T188]  ? static_obj (kernel/locking/lockdep.c:858)
[    9.784077][  T188]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[    9.784242][  T188]  ? nsim_dev_hwstats_init (./include/linux/workqueue.h:713 ./include/linux/workqueue.h:855 drivers/net/netdevsim/hwstats.c:439) netdevsim
[    9.784464][  T188] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1570 drivers/net/netdevsim/dev.c:1622) netdevsim
[    9.784766][  T188]  ? devlink_reload_reinit_sanity_check (net/devlink/dev.c:437 (discriminator 1))
[    9.784970][  T188]  devlink_reload (net/devlink/dev.c:475)
[    9.785127][  T188]  ? devlink_notify_unregister (net/devlink/dev.c:308)
[    9.785291][  T188]  ? fdget (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:49 fs/file.c:1196 fs/file.c:1210)
[    9.785411][  T188]  ? ns_capable (./include/linux/security.h:701 kernel/capability.c:342 kernel/capability.c:363)
[    9.785538][  T188]  devlink_nl_reload_doit (net/devlink/dev.c:585)
[    9.785694][  T188]  ? devlink_get_from_attrs_lock (net/devlink/devl_internal.h:112 net/devlink/devl_internal.h:118 net/devlink/netlink.c:235)
[    9.785891][  T188]  ? __nla_validate_parse (lib/nlattr.c:635)
[    9.786048][  T188]  ? devlink_reload (./include/net/net_namespace.h:412 (discriminator 8))
[    9.786212][  T188]  ? __nla_parse (lib/nlattr.c:732)
[    9.786406][  T188]  genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114)
[    9.786609][  T188]  ? genl_family_rcv_msg_attrs_parse.isra.0 (./include/net/netlink.h:785 (discriminator 2))
[    9.786808][  T188]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[    9.786965][  T188]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.787124][  T188]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[    9.787291][  T188]  genl_family_rcv_msg (net/netlink/genetlink.c:1194)
[    9.787447][  T188]  ? genl_family_rcv_msg_dumpit (net/netlink/genetlink.c:1079)
[    9.787647][  T188]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[    9.787841][  T188]  ? devlink_nl_pre_doit_port (net/devlink/netlink.c:262)
[    9.787997][  T188]  ? devlink_reload (./include/net/net_namespace.h:412 (discriminator 8))
[    9.788157][  T188]  ? devlink_nl_post_doit (net/devlink/netlink.c:307)
[    9.788314][  T188]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[    9.788490][  T188]  genl_rcv_msg (net/netlink/genetlink.c:1209)
[    9.788651][  T188]  netlink_rcv_skb (net/netlink/af_netlink.c:2551)
[    9.788807][  T188]  ? genl_family_rcv_msg (net/netlink/genetlink.c:1136 (discriminator 2))
[    9.788963][  T188]  ? netlink_ack (./include/linux/skbuff.h:2718)
[    9.789122][  T188]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[    9.789283][  T188]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[    9.789442][  T188]  genl_rcv (net/netlink/genetlink.c:1218)
[    9.789566][  T188]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[    9.789726][  T188]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[    9.789881][  T188]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[    9.790039][  T188]  netlink_sendmsg (net/netlink/af_netlink.c:1895)
[    9.790202][  T188]  ? netlink_unicast (./include/net/net_namespace.h:419 (discriminator 7))
[    9.790360][  T188]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[    9.790524][  T188]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[    9.790683][  T188]  __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[    9.790841][  T188]  ? __ia32_sys_getpeername (net/socket.c:2219)
[    9.791000][  T188]  ? build_open_flags (fs/open.c:1212)
[    9.791168][  T188]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[    9.791325][  T188]  ? __ia32_sys_open (fs/open.c:1374)
[    9.791484][  T188]  __x64_sys_sendto (net/socket.c:2272 net/socket.c:2268 net/socket.c:2268)
[    9.791646][  T188]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.791852][  T188]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[    9.792077][  T188]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[    9.792236][  T188]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    9.792394][  T188]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[    9.792557][  T188]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[    9.792713][  T188]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.792909][  T188] RIP: 0033:0x7f43d00f108e
[    9.793074][  T188] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 94 bd 00 00       	call   0xbd9c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[    9.793640][  T188] RSP: 002b:00007ffc41e29ca0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[    9.793879][  T188] RAX: ffffffffffffffda RBX: 0000000026614980 RCX: 00007f43d00f108e
[    9.794112][  T188] RDX: 0000000000000040 RSI: 0000000026614ba0 RDI: 0000000000000005
[    9.794348][  T188] RBP: 00007ffc41e29cb0 R08: 00007f43d03a5980 R09: 000000000000000c
[    9.794584][  T188] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000040cd80
[    9.794816][  T188] R13: 0000000026614980 R14: 0000000000000000 R15: 0000000000000001
| [   34.624329][   T12] ------------[ cut here ]------------
| [   34.624756][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12
| [   34.625058][   T12] Modules linked in: netdevsim
| [   34.625713][   T12] Tainted: [W]=WARN
[   34.625828][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.626016][   T12] Workqueue: netns cleanup_net
[   34.626184][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   34.626389][   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 a8 cc 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 a8 cc f0 ff       	call   0xfffffffffff0cce4
  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 a8 cc f0 ff       	call   0xfffffffffff0ccba
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   34.626922][   T12] RSP: 0018:ffa00000000c7610 EFLAGS: 00010286
[   34.627113][   T12] RAX: 00000000ffffffa6 RBX: ff1100000c2af840 RCX: 1ff4000000018e88
[   34.627341][   T12] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000c2af8f0
[   34.627643][   T12] RBP: ff11000004f5a000 R08: 1fe2200001855f1f R09: ff11000001b05220
[   34.627865][   T12] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   34.628083][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   34.628314][   T12] FS:  0000000000000000(0000) GS:ff110000a5185000(0000) knlGS:0000000000000000
[   34.628606][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.628804][   T12] CR2: 0000556fb6c35d5c CR3: 000000000ade6006 CR4: 0000000000771ef0
[   34.629041][   T12] PKRU: 55555554
[   34.629162][   T12] Call Trace:
[   34.629283][   T12]  <TASK>
[   34.629364][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   34.629566][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   34.629755][   T12]  ? nsim_destroy (drivers/net/netdevsim/netdev.c:1188) netdevsim
[   34.629918][   T12]  ? netdev_run_todo (net/core/dev.c:11703)
[   34.630084][   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)
[   34.630258][   T12]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   34.630412][   T12]  ? rtnl_net_dev_lock (./include/linux/rtnetlink.h:130 net/core/dev.c:2162)
[   34.630582][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   34.630746][   T12]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   34.630904][   T12] nsim_destroy (./include/linux/netdevice.h:3455 drivers/net/netdevsim/netdev.c:1193) netdevsim
[   34.631070][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   34.631247][   T12] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:1547) netdevsim
[   34.631442][   T12] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1561 drivers/net/netdevsim/dev.c:1785) netdevsim
[   34.631649][   T12] nsim_dev_reload_down (drivers/net/netdevsim/dev.c:1038) netdevsim
[   34.631853][   T12]  devlink_reload (net/devlink/dev.c:462)
[   34.632013][   T12]  ? xas_find_conflict (lib/xarray.c:207 lib/xarray.c:1568)
[   34.632178][   T12]  ? devlink_notify_unregister (net/devlink/dev.c:308)
[   34.632344][   T12]  ? __devlinks_xa_find_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/devlink/core.c:364 (discriminator 2))
[   34.632499][   T12]  devlink_pernet_pre_exit (net/devlink/core.c:558)
[   34.632660][   T12]  ? devlink_free (./include/linux/list.h:404 (discriminator 3))
[   34.632829][   T12]  ops_undo_list (net/core/net_namespace.c:161 net/core/net_namespace.c:234)
[   34.633002][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   34.633167][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   34.633350][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   34.633513][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   34.633777][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   34.633950][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   34.634107][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   34.634270][   T12]  process_one_work (kernel/workqueue.c:3314)
[   34.634427][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   34.634587][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   34.634752][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   34.634913][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   34.635062][   T12]  kthread (kernel/kthread.c:436)
[   34.635175][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   34.635372][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   34.635533][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   34.635694][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   34.635891][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   34.636041][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   34.636193][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   34.696176][   T12] ------------[ cut here ]------------
| [   34.696405][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12
| [   34.696742][   T12] Modules linked in: netdevsim
| [   34.697272][   T12] Tainted: [W]=WARN
[   34.697393][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.697595][   T12] Workqueue: netns cleanup_net
[   34.697756][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   34.697959][   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 a8 cc 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 a8 cc f0 ff       	call   0xfffffffffff0cce4
  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 a8 cc f0 ff       	call   0xfffffffffff0ccba
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   34.698498][   T12] RSP: 0018:ffa00000000c7568 EFLAGS: 00010286
[   34.698699][   T12] RAX: 00000000ffffffa6 RBX: ff1100000c2aedc0 RCX: 1ff4000000018e73
[   34.698931][   T12] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000c2aee70
[   34.699168][   T12] RBP: ff11000004ba2000 R08: 1fe2200001855dcf R09: ff11000001b05220
[   34.699409][   T12] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   34.699651][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000004ba2000
[   34.699881][   T12] FS:  0000000000000000(0000) GS:ff110000a5185000(0000) knlGS:0000000000000000
[   34.700153][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.700380][   T12] CR2: 0000556fb6c35d5c CR3: 000000000ade6006 CR4: 0000000000771ef0
[   34.700632][   T12] PKRU: 55555554
[   34.700750][   T12] Call Trace:
[   34.700864][   T12]  <TASK>
[   34.700946][   T12]  rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551)
[   34.701104][   T12]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560)
[   34.701229][   T12]  register_netdevice (net/core/dev.c:11488)
[   34.701390][   T12]  ? unregister_netdevice_queue (./include/linux/list.h:162)
[   34.701598][   T12]  ? __debugfs_create_file (fs/debugfs/inode.c:412 fs/debugfs/inode.c:452)
[   34.701766][   T12] nsim_init_netdevsim (drivers/net/netdevsim/netdev.c:1069) netdevsim
[   34.701966][   T12] nsim_create (drivers/net/netdevsim/netdev.c:1151) netdevsim
[   34.702124][   T12] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1509) netdevsim
[   34.702322][   T12]  ? add_timer_on (kernel/time/timer.c:925 (discriminator 5))
[   34.702596][   T12]  ? nsim_dev_get_vfs (drivers/net/netdevsim/dev.c:65) netdevsim
[   34.702796][   T12]  ? is_module_address (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) kernel/module/main.c:3876 (discriminator 2))
[   34.702947][   T12]  ? static_obj (kernel/locking/lockdep.c:858)
[   34.703061][   T12]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   34.703228][   T12]  ? nsim_dev_hwstats_init (./include/linux/workqueue.h:713 ./include/linux/workqueue.h:855 drivers/net/netdevsim/hwstats.c:439) netdevsim
[   34.703445][   T12] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1570 drivers/net/netdevsim/dev.c:1622) netdevsim
[   34.703659][   T12]  ? devlink_reload_reinit_sanity_check (net/devlink/dev.c:437 (discriminator 1))
[   34.703848][   T12]  devlink_reload (net/devlink/dev.c:475)
[   34.704093][   T12]  ? xas_find_conflict (lib/xarray.c:207 lib/xarray.c:1568)
[   34.704252][   T12]  ? devlink_notify_unregister (net/devlink/dev.c:308)
[   34.704402][   T12]  ? __devlinks_xa_find_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/devlink/core.c:364 (discriminator 2))
[   34.704561][   T12]  devlink_pernet_pre_exit (net/devlink/core.c:558)
[   34.704709][   T12]  ? devlink_free (./include/linux/list.h:404 (discriminator 3))
[   34.704867][   T12]  ops_undo_list (net/core/net_namespace.c:161 net/core/net_namespace.c:234)
[   34.705023][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   34.705172][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   34.705426][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   34.705581][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   34.705746][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   34.705999][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   34.706149][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   34.706306][   T12]  process_one_work (kernel/workqueue.c:3314)
[   34.706461][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   34.706616][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   34.706770][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   34.706927][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   34.707077][   T12]  kthread (kernel/kthread.c:436)
[   34.707189][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   34.707378][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   34.707728][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   34.707882][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   34.708066][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   34.708316][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   34.708464][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   34.711943][   T12] ------------[ cut here ]------------
| [   34.712129][   T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12
| [   34.712449][   T12] Modules linked in: netdevsim
| [   34.712959][   T12] Tainted: [W]=WARN
[   34.713055][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.713263][   T12] Workqueue: netns cleanup_net
[   34.713396][   T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   34.713564][   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 a8 cc 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 a8 cc f0 ff       	call   0xfffffffffff0cce4
  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 a8 cc f0 ff       	call   0xfffffffffff0ccba
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   34.714013][   T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[   34.714172][   T12] RAX: 00000000ffffffa6 RBX: ff1100000c2ae1c0 RCX: 1ff4000000018ed5
[   34.714365][   T12] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000c2ae270
[   34.714559][   T12] RBP: ff110000058bc000 R08: 1fe2200001855c4f R09: ff11000001b051d0
[   34.714747][   T12] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[   34.714934][   T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   34.715122][   T12] FS:  0000000000000000(0000) GS:ff110000a5185000(0000) knlGS:0000000000000000
[   34.715350][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.715510][   T12] CR2: 0000556fb6c35d5c CR3: 000000000ade6006 CR4: 0000000000771ef0
[   34.715703][   T12] PKRU: 55555554
[   34.715797][   T12] Call Trace:
[   34.715890][   T12]  <TASK>
[   34.715956][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   34.716116][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   34.716277][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   34.716408][   T12]  default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089)
[   34.716541][   T12]  ? generic_xdp_install (./include/linux/netdevice.h:5659)
[   34.716665][   T12]  ? ipmr_free_table (net/ipv4/ipmr.c:453)
[   34.716792][   T12]  ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7))
[   34.716918][   T12]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   34.717043][   T12]  ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1))
[   34.717168][   T12]  ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252)
[   34.717305][   T12]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094)
[   34.717429][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   34.717565][   T12]  cleanup_net (net/core/net_namespace.c:702)
[   34.717690][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   34.717816][   T12]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[   34.717944][   T12]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   34.718068][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   34.718195][   T12]  process_one_work (kernel/workqueue.c:3314)
[   34.718331][   T12]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[   34.718455][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   34.718591][   T12]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[   34.718720][   T12]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[   34.718844][   T12]  kthread (kernel/kthread.c:436)
[   34.718939][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   34.719093][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   34.719226][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   34.719353][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   34.719509][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   34.719639][   T12]  ? kthread_affine_node (kernel/kthread.c:378)
[   34.719762][   T12]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   34.732672][  T165] ------------[ cut here ]------------
| [   34.732988][  T165] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: psample.sh/165
| [   34.733363][  T165] Modules linked in: netdevsim
| [   34.733988][  T165] Tainted: [W]=WARN
[   34.734114][  T165] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.734327][  T165] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[   34.734573][  T165] 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 a8 cc 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 a8 cc f0 ff       	call   0xfffffffffff0cce4
  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 a8 cc f0 ff       	call   0xfffffffffff0ccba
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[   34.735167][  T165] RSP: 0018:ffa00000007d7728 EFLAGS: 00010286
[   34.735384][  T165] RAX: 00000000ffffffa6 RBX: ff1100000b6c67c0 RCX: 1ff40000000faeab
[   34.735638][  T165] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000b6c6870
[   34.735877][  T165] RBP: ff11000004ba2000 R08: 1fe22000016d8d0f R09: ff11000004c52f48
[   34.736114][  T165] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[   34.736355][  T165] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[   34.736601][  T165] FS:  00007f05c63b9b80(0000) GS:ff110000a5305000(0000) knlGS:0000000000000000
[   34.736880][  T165] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.737082][  T165] CR2: 0000562ecd894020 CR3: 000000000ade6002 CR4: 0000000000771ef0
[   34.737325][  T165] PKRU: 55555554
[   34.737445][  T165] Call Trace:
[   34.737638][  T165]  <TASK>
[   34.737721][  T165]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[   34.737927][  T165]  ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3))
[   34.738124][  T165]  ? __rtnl_unlock (net/core/rtnetlink.c:143)
[   34.738291][  T165]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   34.738450][  T165]  ? netdev_run_todo (net/core/dev.c:11703)
[   34.738673][  T165]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   34.738829][  T165]  ? 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)
[   34.738993][  T165]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299)
[   34.739155][  T165]  ? unregister_netdevice_many (net/core/dev.c:12497)
[   34.739322][  T165] nsim_destroy (./include/linux/netdevice.h:3455 drivers/net/netdevsim/netdev.c:1193) netdevsim
[   34.739483][  T165]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   34.739713][  T165] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:1547) netdevsim
[   34.739914][  T165] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1561 drivers/net/netdevsim/dev.c:1785) netdevsim
[   34.740115][  T165] nsim_drv_remove (drivers/net/netdevsim/dev.c:1800) netdevsim
[   34.740283][  T165]  device_release_driver_internal (drivers/base/dd.c:1352 drivers/base/dd.c:1375)
[   34.740482][  T165]  bus_remove_device (drivers/base/bus.c:657)
[   34.740708][  T165]  ? bus_probe_device (drivers/base/bus.c:616 (discriminator 1))
[   34.740866][  T165]  ? device_remove_file (drivers/base/core.c:3073)
[   34.741030][  T165]  device_del (drivers/base/core.c:3895)
[   34.741149][  T165]  ? __device_link_del (./include/linux/kobject.h:89)
[   34.741314][  T165]  ? sysfs_file_ops (fs/sysfs/file.c:38 (discriminator 1))
[   34.741474][  T165]  device_unregister (drivers/base/core.c:3936)
[   34.741701][  T165] del_device_store (drivers/net/netdevsim/bus.c:491 drivers/net/netdevsim/bus.c:244) netdevsim
[   34.741902][  T165]  ? sysfs_file_kobj (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) fs/sysfs/file.c:24 (discriminator 2))
[   34.742062][  T165]  ? nsim_bus_dev_numvfs_show (drivers/net/netdevsim/bus.c:57) netdevsim
[   34.742268][  T165]  ? sysfs_file_kobj (./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1181 fs/sysfs/file.c:24)
[   34.742428][  T165]  ? sysfs_kf_write (fs/sysfs/file.c:137)
[   34.742655][  T165]  kernfs_fop_write_iter (fs/kernfs/file.c:352)
[   34.742814][  T165]  ? kernfs_ops (fs/kernfs/file.c:128)
[   34.742935][  T165]  new_sync_write (fs/read_write.c:595)
[   34.743097][  T165]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   34.743260][  T165]  ? new_sync_read (./include/linux/ioprio.h:41)
[   34.743419][  T165]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   34.743651][  T165]  ? ksys_write (fs/read_write.c:740)
[   34.743819][  T165]  vfs_write (fs/read_write.c:688)
[   34.743941][  T165]  ksys_write (fs/read_write.c:740)
[   34.744061][  T165]  ? __ia32_sys_read (fs/read_write.c:724)
[   34.744222][  T165]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   34.744380][  T165]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   34.744606][  T165]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   34.744763][  T165]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   34.744922][  T165]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   34.745081][  T165]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   34.745283][  T165] RIP: 0033:0x7f05c642b08e
[   34.745451][  T165] 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
[   34.746083][  T165] RSP: 002b:00007ffed5282580 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   34.746327][  T165] RAX: ffffffffffffffda RBX: 00007f05c65ad580 RCX: 00007f05c642b08e
[   34.746632][  T165] RDX: 0000000000000005 RSI: 0000556fd9037bb0 RDI: 0000000000000001
[   34.746870][  T165] RBP: 00007ffed5282590 R08: 0000000000000000 R09: 0000000000000000
[   34.747105][  T165] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000005


Finger prints:
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:nsim_init_netdevsim:nsim_create
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:register_netdev:loopback_net_init
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:unregister_netdevice_queue:nsim_destroy:__nsim_dev_port_del