[ 1965.758227][ T9918] 8021q: adding VLAN 0 to HW filter on device eth0
[ 1965.915012][ T9925] drop_monitor: Initializing network drop monitor service
[ 1976.611950][ T9936] ------------[ cut here ]------------
[ 1976.612373][ T9936] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x780 [netdevsim], CPU#3: echo/9936
[ 1976.613164][ T9936] Modules linked in: drop_monitor cls_bpf netdevsim psample xfrm_user chacha libchacha chacha20poly1305 libpoly1305 tls sch_prio xt_mark nft_compat nf_tables act_mirred sch_fq_codel cls_basic act_gact cls_flower sch_ingress vxlan
[ 1976.613876][ T9936] CPU: 3 UID: 0 PID: 9936 Comm: echo Not tainted 7.0.0-rc2-virtme #1 PREEMPT(full) 
[ 1976.614150][ T9936] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1976.614344][ T9936] RIP: 0010:nsim_destroy+0x128/0x780 [netdevsim]
[ 1976.614553][ T9936] Code: 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 0f 85 e5 05 00 00 48 8b 3b e8 94 f3 39 ed 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 b2 4e 78 ec
[ 1976.615120][ T9936] RSP: 0018:ffa00000005179b8 EFLAGS: 00010293
[ 1976.615325][ T9936] RAX: 0000000000000000 RBX: ff11000015042d40 RCX: ff11000015043488
[ 1976.615557][ T9936] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000
[ 1976.615808][ T9936] RBP: ff11000015043488 R08: ff11000015043488 R09: 0000000000000000
[ 1976.616044][ T9936] R10: 1fe2200002a08691 R11: 0000000000000001 R12: ff110000184f2498
[ 1976.616271][ T9936] R13: dffffc0000000000 R14: ff110000184f2000 R15: ffffffffc0845380
[ 1976.616500][ T9936] FS:  00007ff254f1d780(0000) GS:ff110000bb755000(0000) knlGS:0000000000000000
[ 1976.616789][ T9936] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1976.616982][ T9936] CR2: 000055dcb0fab5d8 CR3: 0000000017eb1005 CR4: 0000000000771ef0
[ 1976.617207][ T9936] PKRU: 55555554
[ 1976.617324][ T9936] Call Trace:
[ 1976.617444][ T9936]  <TASK>
[ 1976.617523][ T9936]  ? rcu_is_watching+0x15/0xd0
[ 1976.617698][ T9936]  __nsim_dev_port_del+0x17c/0x2c0 [netdevsim]
[ 1976.617889][ T9936]  ? devl_lock_is_held+0x1a/0x20
[ 1976.618045][ T9936]  nsim_dev_reload_destroy+0xd0/0x470 [netdevsim]
[ 1976.618232][ T9936]  nsim_drv_remove+0x4e/0x1e0 [netdevsim]
[ 1976.618382][ T9936]  device_release_driver_internal+0x3b6/0x570
[ 1976.618576][ T9936]  ? sysfs_file_ops+0x140/0x140
[ 1976.618742][ T9936]  bus_remove_device+0x1ec/0x3f0
[ 1976.618889][ T9936]  ? sysfs_file_ops+0x140/0x140
[ 1976.619044][ T9936]  device_del+0x324/0x8c0
[ 1976.619158][ T9936]  ? __device_link_del+0x500/0x500
[ 1976.619308][ T9936]  ? sysfs_file_ops+0x140/0x140
[ 1976.619462][ T9936]  device_unregister+0x17/0xb0
[ 1976.619613][ T9936]  del_device_store+0x2fb/0x580 [netdevsim]
[ 1976.619815][ T9936]  ? sysfs_file_kobj+0xb3/0x1e0
[ 1976.619963][ T9936]  ? nsim_bus_dev_numvfs_show+0x80/0x80 [netdevsim]
[ 1976.620155][ T9936]  ? sysfs_file_kobj+0xbd/0x1e0
[ 1976.620301][ T9936]  ? sysfs_kf_write+0x65/0x160
[ 1976.620453][ T9936]  kernfs_fop_write_iter+0x335/0x510
[ 1976.620604][ T9936]  ? kernfs_ops+0xf0/0xf0
[ 1976.620734][ T9936]  new_sync_write+0x308/0x6f0
[ 1976.620886][ T9936]  ? new_sync_read+0x6f0/0x6f0
[ 1976.621043][ T9936]  ? lock_acquire.part.0+0xbc/0x260
[ 1976.621192][ T9936]  ? ksys_write+0xff/0x200
[ 1976.621346][ T9936]  vfs_write+0x65e/0xbb0
[ 1976.621467][ T9936]  ksys_write+0xff/0x200
[ 1976.621579][ T9936]  ? __ia32_sys_read+0xc0/0xc0
[ 1976.621745][ T9936]  ? do_user_addr_fault+0x799/0xdb0
[ 1976.621893][ T9936]  ? rcu_is_watching+0x15/0xd0
[ 1976.622047][ T9936]  ? rcu_is_watching+0x15/0xd0
[ 1976.622196][ T9936]  do_syscall_64+0x117/0xfc0
[ 1976.622346][ T9936]  ? exc_page_fault+0xaf/0xd0
[ 1976.622503][ T9936]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1976.622706][ T9936] RIP: 0033:0x7ff254f8ec5e
[ 1976.622866][ T9936] 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
[ 1976.623396][ T9936] RSP: 002b:00007ffc59f05360 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1976.623632][ T9936] RAX: ffffffffffffffda RBX: 00007ff25510a5c0 RCX: 00007ff254f8ec5e
[ 1976.623868][ T9936] RDX: 0000000000000005 RSI: 000055dcb0faa5d0 RDI: 0000000000000001
[ 1976.624093][ T9936] RBP: 00007ffc59f05370 R08: 0000000000000000 R09: 0000000000000000
[ 1976.624316][ T9936] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000005
[ 1976.624546][ T9936] R13: 0000000000000005 R14: 000055dcb0faa5d0 R15: 00007ffc59f05670
[ 1976.624796][ T9936]  </TASK>
[ 1976.624911][ T9936] irq event stamp: 33155
[ 1976.625029][ T9936] hardirqs last  enabled at (33163): [<ffffffffac127efa>] __up_console_sem+0x5a/0x70
[ 1976.625290][ T9936] hardirqs last disabled at (33170): [<ffffffffac127edf>] __up_console_sem+0x3f/0x70
[ 1976.625555][ T9936] softirqs last  enabled at (32512): [<ffffffffabf9da5c>] handle_softirqs+0x60c/0x920
[ 1976.625833][ T9936] softirqs last disabled at (31761): [<ffffffffabf9e1f2>] irq_exit_rcu+0xa2/0xf0
[ 1976.626094][ T9936] ---[ end trace 0000000000000000 ]---
[ 1977.271743][ T9957] 8021q: adding VLAN 0 to HW filter on device eth0