[ 2258.904262][T28548] netdevsim netdevsim450 eni450np1: renamed from eth0
[ 2258.909646][T28549] netdevsim netdevsim603 eni603np1: renamed from eth1
[ 2259.419464][T28571] 8021q: adding VLAN 0 to HW filter on device eni450np1
[ 2259.461741][T28572] 8021q: adding VLAN 0 to HW filter on device eni603np1
[ 2260.565771][T28539] ------------[ cut here ]------------
[ 2260.566026][T28539] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x780 [netdevsim], CPU#1: busy_poll_test./28539
[ 2260.566377][T28539] Modules linked in: netdevsim psample sch_etf sch_fq act_mirred act_tunnel_key bareudp pktgen xt_conntrack nf_conntrack nf_defrag_ipv4 nf_defrag_ipv6 xfrm_user cls_matchall act_gact cls_flower sch_ingress chacha libchacha chacha20poly1305 libpoly1305 tls ip6t_rpfilter nft_compat nf_tables vxlan mpls_gso mpls_iptunnel mpls_router [last unloaded: ila]
[ 2260.567419][T28539] CPU: 1 UID: 0 PID: 28539 Comm: busy_poll_test. Not tainted 7.0.0-rc2-virtme #1 PREEMPT(full) 
[ 2260.567720][T28539] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2260.567959][T28539] RIP: 0010:nsim_destroy+0x128/0x780 [netdevsim]
[ 2260.568158][T28539] 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 73 d2 f4 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 ce 10 f4
[ 2260.568697][T28539] RSP: 0018:ffa0000000f879b8 EFLAGS: 00010293
[ 2260.568898][T28539] RAX: 0000000000000000 RBX: ff11000008ee2d40 RCX: ff11000008ee3488
[ 2260.569123][T28539] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000
[ 2260.569350][T28539] RBP: ff11000008ee3488 R08: ff11000008ee3488 R09: 0000000000000000
[ 2260.569573][T28539] R10: 1fe22000011dc691 R11: ffa0000000f87890 R12: ff11000012ae5498
[ 2260.569809][T28539] R13: dffffc0000000000 R14: ff11000012ae5000 R15: ffffffffc0956380
[ 2260.570033][T28539] FS:  00007f4906ed6bc0(0000) GS:ff110000b3a55000(0000) knlGS:0000000000000000
[ 2260.570298][T28539] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2260.570486][T28539] CR2: 00005631c7862c20 CR3: 000000001d38e005 CR4: 0000000000771ef0
[ 2260.570713][T28539] PKRU: 55555554
[ 2260.570834][T28539] Call Trace:
[ 2260.570946][T28539]  <TASK>
[ 2260.571026][T28539]  ? rcu_is_watching+0x15/0xd0
[ 2260.571185][T28539]  __nsim_dev_port_del+0x17c/0x2c0 [netdevsim]
[ 2260.571373][T28539]  ? devl_lock_is_held+0x1a/0x20
[ 2260.571522][T28539]  nsim_dev_reload_destroy+0xd0/0x470 [netdevsim]
[ 2260.571709][T28539]  nsim_drv_remove+0x4e/0x1e0 [netdevsim]
[ 2260.571866][T28539]  device_release_driver_internal+0x3b6/0x570
[ 2260.572058][T28539]  ? sysfs_file_ops+0x140/0x140
[ 2260.572207][T28539]  bus_remove_device+0x1ec/0x3f0
[ 2260.572365][T28539]  ? sysfs_file_ops+0x140/0x140
[ 2260.572515][T28539]  device_del+0x324/0x8c0
[ 2260.572628][T28539]  ? __device_link_del+0x500/0x500
[ 2260.572786][T28539]  ? sysfs_file_ops+0x140/0x140
[ 2260.572934][T28539]  device_unregister+0x17/0xb0
[ 2260.573081][T28539]  del_device_store+0x2fb/0x580 [netdevsim]
[ 2260.573266][T28539]  ? sysfs_file_kobj+0xb3/0x1e0
[ 2260.573417][T28539]  ? nsim_bus_dev_numvfs_show+0x80/0x80 [netdevsim]
[ 2260.573606][T28539]  ? sysfs_file_kobj+0xbd/0x1e0
[ 2260.573762][T28539]  ? sysfs_kf_write+0x65/0x160
[ 2260.573910][T28539]  kernfs_fop_write_iter+0x335/0x510
[ 2260.574057][T28539]  ? kernfs_ops+0xf0/0xf0
[ 2260.574169][T28539]  new_sync_write+0x308/0x6f0
[ 2260.574323][T28539]  ? new_sync_read+0x6f0/0x6f0
[ 2260.574471][T28539]  ? lock_acquire.part.0+0xbc/0x260
[ 2260.574622][T28539]  ? ksys_write+0xff/0x200
[ 2260.574780][T28539]  vfs_write+0x65e/0xbb0
[ 2260.574894][T28539]  ksys_write+0xff/0x200
[ 2260.575006][T28539]  ? __ia32_sys_read+0xc0/0xc0
[ 2260.575153][T28539]  ? do_raw_spin_unlock+0x59/0x250
[ 2260.575303][T28539]  ? rcu_is_watching+0x15/0xd0
[ 2260.575453][T28539]  do_syscall_64+0x117/0xfc0
[ 2260.575603][T28539]  ? exc_page_fault+0xaf/0xd0
[ 2260.575760][T28539]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 2260.575943][T28539] RIP: 0033:0x7f4906f46c5e
[ 2260.576099][T28539] 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
[ 2260.576631][T28539] RSP: 002b:00007ffecfb2c090 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2260.576862][T28539] RAX: ffffffffffffffda RBX: 00007f49070c25c0 RCX: 00007f4906f46c5e
[ 2260.577083][T28539] RDX: 0000000000000004 RSI: 00005631c7862c20 RDI: 0000000000000001
[ 2260.577309][T28539] RBP: 00007ffecfb2c0a0 R08: 0000000000000000 R09: 0000000000000000
[ 2260.577531][T28539] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
[ 2260.577761][T28539] R13: 0000000000000004 R14: 00005631c7862c20 R15: 00005631c7827690
[ 2260.577991][T28539]  </TASK>
[ 2260.578104][T28539] irq event stamp: 132497
[ 2260.578234][T28539] hardirqs last  enabled at (132505): [<ffffffffb3d27efa>] __up_console_sem+0x5a/0x70
[ 2260.578496][T28539] hardirqs last disabled at (132512): [<ffffffffb3d27edf>] __up_console_sem+0x3f/0x70
[ 2260.578759][T28539] softirqs last  enabled at (132054): [<ffffffffb3b9da5c>] handle_softirqs+0x60c/0x920
[ 2260.579021][T28539] softirqs last disabled at (132045): [<ffffffffb3b9e1f2>] irq_exit_rcu+0xa2/0xf0
[ 2260.579279][T28539] ---[ end trace 0000000000000000 ]---