[   18.826529][  T207] netdevsim netdevsim328 eni328np1: renamed from eth0
[   18.840798][  T209] netdevsim netdevsim523 eni523np1: renamed from eth1
[   19.293430][  T223] 8021q: adding VLAN 0 to HW filter on device eni328np1
[   19.328473][  T224] 8021q: adding VLAN 0 to HW filter on device eni523np1
[   19.414183][  T195] Could not find device with ifindex 2000 in netnsfd 11
[   19.415325][  T195] Could not find netns with fd: 2000
[   19.415674][  T195] Cannot link a netdevsim to itself
[   19.416091][  T195] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).
[   19.698737][  T236] 8021q: adding VLAN 0 to HW filter on device eni328np1
[   19.967992][  T246] 8021q: adding VLAN 0 to HW filter on device eni328np1
[   20.789848][  T195] ------------[ cut here ]------------
[   20.790111][  T195] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x7b0 [netdevsim], CPU#2: peer.sh/195
[   20.790544][  T195] Modules linked in: netdevsim
[   20.790791][  T195] CPU: 2 UID: 0 PID: 195 Comm: peer.sh Not tainted 7.0.0-rc2-virtme #1 PREEMPT(full) 
[   20.791111][  T195] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.791345][  T195] RIP: 0010:nsim_destroy+0x128/0x7b0 [netdevsim]
[   20.791589][  T195] 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 4c e5 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 90 e4
[   20.792361][  T195] RSP: 0018:ffa00000008d79b8 EFLAGS: 00010293
[   20.792591][  T195] RAX: 0000000000000000 RBX: ff1100000ce42d00 RCX: ff1100000ce43448
[   20.792879][  T195] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000
[   20.793147][  T195] RBP: ff1100000ce43448 R08: ff1100000ce43448 R09: 0000000000000000
[   20.793413][  T195] R10: 1fe22000019c8689 R11: ffa00000008d7890 R12: ff1100000cbfbc98
[   20.793687][  T195] R13: dffffc0000000000 R14: ff1100000cbfb800 R15: ffffffffc0398380
[   20.793981][  T195] FS:  00007f1c564dcbc0(0000) GS:ff1100008d185000(0000) knlGS:0000000000000000
[   20.794290][  T195] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.794524][  T195] CR2: 0000559850ca6810 CR3: 000000000c602003 CR4: 0000000000771ef0
[   20.794801][  T195] PKRU: 55555554
[   20.794976][  T195] Call Trace:
[   20.795136][  T195]  <TASK>
[   20.795260][  T195]  ? rcu_is_watching+0x15/0xd0
[   20.795462][  T195]  __nsim_dev_port_del+0x17c/0x2c0 [netdevsim]
[   20.795703][  T195]  ? devl_lock_is_held+0x1a/0x20
[   20.795912][  T195]  nsim_dev_reload_destroy+0xd0/0x470 [netdevsim]
[   20.796147][  T195]  nsim_drv_remove+0x4e/0x1e0 [netdevsim]
[   20.796345][  T195]  device_release_driver_internal+0x3b6/0x570
[   20.796579][  T195]  ? sysfs_file_ops+0x140/0x140
[   20.796777][  T195]  bus_remove_device+0x1ec/0x3f0
[   20.796988][  T195]  ? sysfs_file_ops+0x140/0x140
[   20.797181][  T195]  device_del+0x324/0x8c0
[   20.797342][  T195]  ? __device_link_del+0x500/0x500
[   20.797539][  T195]  ? sysfs_file_ops+0x140/0x140
[   20.797737][  T195]  device_unregister+0x17/0xb0
[   20.797944][  T195]  del_device_store+0x2fb/0x580 [netdevsim]
[   20.798178][  T195]  ? sysfs_file_kobj+0xb3/0x1e0
[   20.798371][  T195]  ? nsim_bus_dev_numvfs_show+0x80/0x80 [netdevsim]
[   20.798605][  T195]  ? sysfs_file_kobj+0xbd/0x1e0
[   20.798805][  T195]  ? sysfs_kf_write+0x65/0x160
[   20.799013][  T195]  kernfs_fop_write_iter+0x335/0x510
[   20.799210][  T195]  ? kernfs_ops+0xf0/0xf0
[   20.799370][  T195]  new_sync_write+0x308/0x6f0
[   20.799570][  T195]  ? new_sync_read+0x6f0/0x6f0
[   20.799773][  T195]  ? lock_acquire.part.0+0xbc/0x260
[   20.799980][  T195]  ? ksys_write+0xff/0x200
[   20.800178][  T195]  vfs_write+0x65e/0xbb0
[   20.800341][  T195]  ksys_write+0xff/0x200
[   20.800501][  T195]  ? __ia32_sys_read+0xc0/0xc0
[   20.800701][  T195]  ? do_raw_spin_unlock+0x59/0x250
[   20.800908][  T195]  ? rcu_is_watching+0x15/0xd0
[   20.801106][  T195]  do_syscall_64+0x117/0xfc0
[   20.801303][  T195]  ? exc_page_fault+0xaf/0xd0
[   20.801499][  T195]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   20.801738][  T195] RIP: 0033:0x7f1c5654cc5e
[   20.801952][  T195] 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
[   20.802525][  T195] RSP: 002b:00007fff6f7cade0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   20.802802][  T195] RAX: ffffffffffffffda RBX: 00007f1c566c85c0 RCX: 00007f1c5654cc5e
[   20.803083][  T195] RDX: 0000000000000004 RSI: 0000559850ca6810 RDI: 0000000000000001
[   20.803350][  T195] RBP: 00007fff6f7cadf0 R08: 0000000000000000 R09: 0000000000000000
[   20.803624][  T195] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
[   20.803904][  T195] R13: 0000000000000004 R14: 0000559850ca6810 R15: 0000559850c85620
[   20.804184][  T195]  </TASK>
[   20.804340][  T195] irq event stamp: 127009
[   20.804498][  T195] hardirqs last  enabled at (127019): [<ffffffffa3f16daa>] __up_console_sem+0x5a/0x70
[   20.804807][  T195] hardirqs last disabled at (127028): [<ffffffffa3f16d8f>] __up_console_sem+0x3f/0x70
[   20.805125][  T195] softirqs last  enabled at (126552): [<ffffffffa3d8e93c>] handle_softirqs+0x60c/0x920
[   20.805426][  T195] softirqs last disabled at (126539): [<ffffffffa3d8f0d2>] irq_exit_rcu+0xa2/0xf0
[   20.805736][  T195] ---[ end trace 0000000000000000 ]---