======================================
| [  947.771608][    C0] bond_xfrm_update_stats: eth0 doesn't support xdo_dev_state_update_stats
| [  949.449314][T16868] ------------[ cut here ]------------
| [  949.449595][T16868] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x780 [netdevsim], CPU#3: 2/16868
| [  949.449939][T16868] Modules linked in: xfrm_user netconsole netdevsim cls_matchall 8021q
[  949.450715][T16868] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  949.450913][T16868] Workqueue: netns cleanup_net
[  949.451071][T16868] RIP: 0010:nsim_destroy (drivers/net/netdevsim/netdev.c:1234 (discriminator 2)) netdevsim
[  949.451274][T16868] Code: 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 0f 85 dd 05 00 00 48 8b 3b e8 b4 7f 35 ee 31 c0 48 8d ab 48 07 00 00 eb 07 90 <0f> 0b 90 83 c0 01 0f b7 d0 be 00 10 00 00 48 89 ef e8 52 c3 6f ed
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 fc                	add    %bh,%ah
   6:	ff                   	lcall  (bad)
   7:	df 48 c1             	fisttps -0x3f(%rax)
   a:	e9 03 80 3c 01       	jmp    0x13c8012
   f:	00 0f                	add    %cl,(%rdi)
  11:	85 dd                	test   %ebx,%ebp
  13:	05 00 00 48 8b       	add    $0x8b480000,%eax
  18:	3b e8                	cmp    %eax,%ebp
  1a:	b4 7f                	mov    $0x7f,%ah
  1c:	35 ee 31 c0 48       	xor    $0x48c031ee,%eax
  21:	8d ab 48 07 00 00    	lea    0x748(%rbx),%ebp
  27:	eb 07                	jmp    0x30
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	83 c0 01             	add    $0x1,%eax
  30:	0f b7 d0             	movzwl %ax,%edx
  33:	be 00 10 00 00       	mov    $0x1000,%esi
  38:	48 89 ef             	mov    %rbp,%rdi
  3b:	e8 52 c3 6f ed       	call   0xffffffffed6fc392

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	83 c0 01             	add    $0x1,%eax
   6:	0f b7 d0             	movzwl %ax,%edx
   9:	be 00 10 00 00       	mov    $0x1000,%esi
   e:	48 89 ef             	mov    %rbp,%rdi
  11:	e8 52 c3 6f ed       	call   0xffffffffed6fc368
[  949.451798][T16868] RSP: 0018:ffa0000005487830 EFLAGS: 00010293
[  949.451981][T16868] RAX: 0000000000000000 RBX: ff11000009edad00 RCX: ff11000009edb448
[  949.452201][T16868] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000
[  949.452423][T16868] RBP: ff11000009edb448 R08: ff11000009edb448 R09: 0000000000000000
[  949.452643][T16868] R10: 1fe22000013db689 R11: 0000000000000001 R12: ff1100000c4c6c98
[  949.453030][T16868] R13: dffffc0000000000 R14: ff1100000c4c6800 R15: ff1100000c4c6800
[  949.453264][T16868] FS:  0000000000000000(0000) GS:ff1100007e19e000(0000) knlGS:0000000000000000
[  949.453521][T16868] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  949.453706][T16868] CR2: 000055f52ea3762c CR3: 0000000005742003 CR4: 0000000000771ef0
[  949.453925][T16868] PKRU: 55555554
[  949.454036][T16868] Call Trace:
[  949.454150][T16868]  <TASK>
[  949.454242][T16868]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1))
[  949.454396][T16868] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:444 drivers/net/netdevsim/dev.c:1529) netdevsim
[  949.454577][T16868]  ? devl_lock_is_held (net/devlink/core.c:285 (discriminator 1))
[  949.454721][T16868] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1538 (discriminator 4) drivers/net/netdevsim/dev.c:1764 (discriminator 4)) netdevsim
[  949.454907][T16868] nsim_dev_reload_down (drivers/net/netdevsim/dev.c:1039) netdevsim
[  949.455085][T16868]  devlink_reload (net/devlink/dev.c:463)
[  949.455235][T16868]  ? xas_find_conflict (lib/xarray.c:218 lib/xarray.c:1568)
[  949.455381][T16868]  ? devlink_notify_unregister (net/devlink/dev.c:446)
[  949.455526][T16868]  ? __devlinks_xa_find_get (./include/linux/rcupdate.h:322 (discriminator 1) ./include/linux/rcupdate.h:881 (discriminator 1) net/devlink/core.c:364 (discriminator 1))
[  949.455674][T16868]  devlink_pernet_pre_exit (net/devlink/core.c:304 net/devlink/devl_internal.h:130 net/devlink/core.c:562)
[  949.455819][T16868]  ? fqdir_free_fn (net/ipv4/inet_fragment.c:222)
[  949.455964][T16868]  ? devlink_free (net/devlink/core.c:545)
[  949.456109][T16868]  ? kernfs_remove_by_name_ns (fs/kernfs/dir.c:1729)
[  949.456263][T16868]  ops_undo_list (net/core/net_namespace.c:160 (discriminator 4) net/core/net_namespace.c:234 (discriminator 4))
[  949.456411][T16868]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:223)
[  949.456558][T16868]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  949.456707][T16868]  cleanup_net (net/core/net_namespace.c:706)
[  949.456853][T16868]  ? net_passive_dec (net/core/net_namespace.c:665)
[  949.456997][T16868]  ? process_one_work (kernel/workqueue.c:3251 (discriminator 1))
[  949.457150][T16868]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 33) kernel/locking/lockdep.c:5831 (discriminator 33))
[  949.457301][T16868]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1))
[  949.457446][T16868]  process_one_work (kernel/workqueue.c:3280)
[  949.457596][T16868]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3177)
[  949.457746][T16868]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  949.457899][T16868]  worker_thread (kernel/workqueue.c:3352 (discriminator 2) kernel/workqueue.c:3439 (discriminator 2))
[  949.458045][T16868]  ? rescuer_thread (kernel/workqueue.c:3385)
[  949.458192][T16868]  ? __kthread_parkme (./arch/x86/include/asm/bitops.h:202 (discriminator 1) ./arch/x86/include/asm/bitops.h:232 (discriminator 1) ./include/asm-generic/bitops/instrumented-non-atomic.h:142 (discriminator 1) kernel/kthread.c:272 (discriminator 1))
[  949.458340][T16868]  ? rescuer_thread (kernel/workqueue.c:3385)
[  949.458484][T16868]  kthread (kernel/kthread.c:436)
[  949.458591][T16868]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 33))
[  949.458777][T16868]  ? kthread_affine_node (kernel/kthread.c:381)
[  949.458920][T16868]  ret_from_fork (arch/x86/kernel/process.c:164)
[  949.459066][T16868]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  949.459256][T16868]  ? __switch_to (./arch/x86/include/asm/cpufeature.h:101 arch/x86/kernel/process_64.c:377 arch/x86/kernel/process_64.c:665)
[  949.459401][T16868]  ? kthread_affine_node (kernel/kthread.c:381)


Finger prints:
nsim_destroy:__nsim_dev_port_del:nsim_dev_reload_destroy:nsim_dev_reload_down:devlink_reload