[   21.381039][  T189] netconsole selftest: netcons_Hu5Uj
[   22.291167][  T189] netconsole selftest: netcons_Hu5Uj
[   22.844484][  T189] ------------[ cut here ]------------
[   22.844743][  T189] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x7b0 [netdevsim], CPU#3: bash/189
[   22.845072][  T189] Modules linked in: netdevsim [last unloaded: netconsole]
[   22.845351][  T189] CPU: 3 UID: 0 PID: 189 Comm: bash Not tainted 7.0.0-rc2-virtme #1 PREEMPT(full) 
[   22.845623][  T189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.845810][  T189] RIP: 0010:nsim_destroy+0x128/0x7b0 [netdevsim]
[   22.846011][  T189] Code: 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 0f 85 47 06 00 00 48 8b 3b e8 84 17 ec d5 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 e2 22 30 d5
[   22.846539][  T189] RSP: 0018:ffa00000009179b8 EFLAGS: 00010293
[   22.846731][  T189] RAX: 0000000000000000 RBX: ff1100000b642d00 RCX: ff1100000b643448
[   22.846953][  T189] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000
[   22.847174][  T189] RBP: ff1100000b643448 R08: ff1100000b643448 R09: 0000000000000000
[   22.847390][  T189] R10: 1fe22000016c8689 R11: 0000000000000001 R12: ff1100000d0a3c98
[   22.847612][  T189] R13: dffffc0000000000 R14: ff1100000d0a3800 R15: ffffffffc0272380
[   22.847829][  T189] FS:  00007ff461489bc0(0000) GS:ff11000096c05000(0000) knlGS:0000000000000000
[   22.848094][  T189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.848280][  T189] CR2: 000055bd199defc0 CR3: 000000000c860001 CR4: 0000000000771ef0
[   22.848546][  T189] PKRU: 55555554
[   22.848658][  T189] Call Trace:
[   22.848766][  T189]  <TASK>
[   22.848841][  T189]  ? rcu_is_watching+0x15/0xd0
[   22.848996][  T189]  __nsim_dev_port_del+0x17c/0x2c0 [netdevsim]
[   22.849185][  T189]  ? devl_lock_is_held+0x1a/0x20
[   22.849331][  T189]  nsim_dev_reload_destroy+0xd0/0x470 [netdevsim]
[   22.849511][  T189]  nsim_drv_remove+0x4e/0x1e0 [netdevsim]
[   22.849659][  T189]  device_release_driver_internal+0x3b6/0x570
[   22.849838][  T189]  ? sysfs_file_ops+0x140/0x140
[   22.849985][  T189]  bus_remove_device+0x1ec/0x3f0
[   22.850134][  T189]  ? sysfs_file_ops+0x140/0x140
[   22.850277][  T189]  device_del+0x324/0x8c0
[   22.850385][  T189]  ? __device_link_del+0x500/0x500
[   22.850530][  T189]  ? sysfs_file_ops+0x140/0x140
[   22.850678][  T189]  device_unregister+0x17/0xb0
[   22.850825][  T189]  del_device_store+0x2fb/0x580 [netdevsim]
[   22.851009][  T189]  ? sysfs_file_kobj+0xb3/0x1e0
[   22.851155][  T189]  ? nsim_bus_dev_numvfs_show+0x80/0x80 [netdevsim]
[   22.851333][  T189]  ? sysfs_file_kobj+0xbd/0x1e0
[   22.851475][  T189]  ? sysfs_kf_write+0x65/0x160
[   22.851623][  T189]  kernfs_fop_write_iter+0x335/0x510
[   22.851765][  T189]  ? kernfs_ops+0xf0/0xf0
[   22.851872][  T189]  new_sync_write+0x308/0x6f0
[   22.852024][  T189]  ? new_sync_read+0x6f0/0x6f0
[   22.852171][  T189]  ? lock_acquire.part.0+0xbc/0x260
[   22.852314][  T189]  ? ksys_write+0xff/0x200
[   22.852460][  T189]  vfs_write+0x65e/0xbb0
[   22.852572][  T189]  ksys_write+0xff/0x200
[   22.852686][  T189]  ? __ia32_sys_read+0xc0/0xc0
[   22.852827][  T189]  ? do_raw_spin_unlock+0x59/0x250
[   22.852978][  T189]  ? rcu_is_watching+0x15/0xd0
[   22.853128][  T189]  do_syscall_64+0x117/0xfc0
[   22.853276][  T189]  ? exc_page_fault+0xaf/0xd0
[   22.853419][  T189]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   22.853678][  T189] RIP: 0033:0x7ff4614f9c5e
[   22.853924][  T189] Code: 4d 89 d8 e8 34 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 13 ff ff ff 0f 1f 00 f3 0f 1e fa
[   22.854791][  T189] RSP: 002b:00007ffc75310090 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   22.855158][  T189] RAX: ffffffffffffffda RBX: 00007ff4616755c0 RCX: 00007ff4614f9c5e
[   22.855514][  T189] RDX: 0000000000000004 RSI: 000055bd23271360 RDI: 0000000000000001
[   22.855881][  T189] RBP: 00007ffc753100a0 R08: 0000000000000000 R09: 0000000000000000
[   22.856242][  T189] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
[   22.856603][  T189] R13: 0000000000000004 R14: 000055bd23271360 R15: 000055bd23273b90
[   22.856942][  T189]  </TASK>
[   22.857063][  T189] irq event stamp: 181709
[   22.857182][  T189] hardirqs last  enabled at (181717): [<ffffffff94916daa>] __up_console_sem+0x5a/0x70
[   22.857438][  T189] hardirqs last disabled at (181724): [<ffffffff94916d8f>] __up_console_sem+0x3f/0x70
[   22.857692][  T189] softirqs last  enabled at (181264): [<ffffffff9478e93c>] handle_softirqs+0x60c/0x920
[   22.857943][  T189] softirqs last disabled at (181259): [<ffffffff9478f0d2>] irq_exit_rcu+0xa2/0xf0
[   22.858204][  T189] ---[ end trace 0000000000000000 ]---