[ 2174.115447][T19538] netdevsim netdevsim287 eni287np1: renamed from eth0
[ 2174.119784][T19539] netdevsim netdevsim533 eni533np1: renamed from eth1
[ 2174.826098][T19554] 8021q: adding VLAN 0 to HW filter on device eni287np1
[ 2174.876562][T19555] 8021q: adding VLAN 0 to HW filter on device eni533np1
[ 2176.270044][T19531] ------------[ cut here ]------------
[ 2176.270350][T19531] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x780 [netdevsim], CPU#2: busy_poll_test./19531
[ 2176.270853][T19531] Modules linked in: netdevsim unix_diag sch_fq ipt_rpfilter act_mirred cls_matchall vxcan can_dev xfrm_interface macsec act_gact cls_flower sch_ingress nft_chain_nat xt_nat ipvtap ipvlan xt_bpf xt_length geneve ip6_gre ip_gre gre vxlan openvswitch psample nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nsh xfrm_user xt_policy ip6t_REJECT nf_reject_ipv6 nft_compat nf_tables
[ 2176.272090][T19531] CPU: 2 UID: 0 PID: 19531 Comm: busy_poll_test. Not tainted 7.0.0-rc2-virtme #1 PREEMPT(full) 
[ 2176.272451][T19531] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2176.272793][T19531] RIP: 0010:nsim_destroy+0x128/0x780 [netdevsim]
[ 2176.273051][T19531] 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 13 69 d3 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 6e a7 d2
[ 2176.273658][T19531] RSP: 0018:ffa000000034f9b8 EFLAGS: 00010293
[ 2176.273909][T19531] RAX: 0000000000000000 RBX: ff11000019712d40 RCX: ff11000019713488
[ 2176.274197][T19531] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000
[ 2176.274480][T19531] RBP: ff11000019713488 R08: ff11000019713488 R09: 0000000000000000
[ 2176.274775][T19531] R10: 1fe22000032e2691 R11: ffa000000034f890 R12: ff11000015e45498
[ 2176.275054][T19531] R13: dffffc0000000000 R14: ff11000015e45000 R15: ffffffffc07ca380
[ 2176.275342][T19531] FS:  00007fcab09b6bc0(0000) GS:ff110000d52d5000(0000) knlGS:0000000000000000
[ 2176.275666][T19531] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2176.275912][T19531] CR2: 0000564384b20c20 CR3: 0000000009cdf001 CR4: 0000000000771ef0
[ 2176.276203][T19531] PKRU: 55555554
[ 2176.276399][T19531] Call Trace:
[ 2176.276566][T19531]  <TASK>
[ 2176.276708][T19531]  ? rcu_is_watching+0x15/0xd0
[ 2176.276920][T19531]  __nsim_dev_port_del+0x17c/0x2c0 [netdevsim]
[ 2176.277250][T19531]  ? devl_lock_is_held+0x1a/0x20
[ 2176.277452][T19531]  nsim_dev_reload_destroy+0xd0/0x470 [netdevsim]
[ 2176.277704][T19531]  nsim_drv_remove+0x4e/0x1e0 [netdevsim]
[ 2176.277917][T19531]  device_release_driver_internal+0x3b6/0x570
[ 2176.278168][T19531]  ? sysfs_file_ops+0x140/0x140
[ 2176.278369][T19531]  bus_remove_device+0x1ec/0x3f0
[ 2176.278584][T19531]  ? sysfs_file_ops+0x140/0x140
[ 2176.278788][T19531]  device_del+0x324/0x8c0
[ 2176.278956][T19531]  ? __device_link_del+0x500/0x500
[ 2176.279168][T19531]  ? sysfs_file_ops+0x140/0x140
[ 2176.279370][T19531]  device_unregister+0x17/0xb0
[ 2176.279583][T19531]  del_device_store+0x2fb/0x580 [netdevsim]
[ 2176.279830][T19531]  ? sysfs_file_kobj+0xb3/0x1e0
[ 2176.280031][T19531]  ? nsim_bus_dev_numvfs_show+0x80/0x80 [netdevsim]
[ 2176.280281][T19531]  ? sysfs_file_kobj+0xbd/0x1e0
[ 2176.280482][T19531]  ? sysfs_kf_write+0x65/0x160
[ 2176.280694][T19531]  kernfs_fop_write_iter+0x335/0x510
[ 2176.280910][T19531]  ? kernfs_ops+0xf0/0xf0
[ 2176.281074][T19531]  new_sync_write+0x308/0x6f0
[ 2176.281287][T19531]  ? new_sync_read+0x6f0/0x6f0
[ 2176.281490][T19531]  ? lock_acquire.part.0+0xbc/0x260
[ 2176.281699][T19531]  ? ksys_write+0xff/0x200
[ 2176.281911][T19531]  vfs_write+0x65e/0xbb0
[ 2176.282080][T19531]  ksys_write+0xff/0x200
[ 2176.282252][T19531]  ? __ia32_sys_read+0xc0/0xc0
[ 2176.282454][T19531]  ? do_raw_spin_unlock+0x59/0x250
[ 2176.282667][T19531]  ? rcu_is_watching+0x15/0xd0
[ 2176.282874][T19531]  do_syscall_64+0x117/0xfc0
[ 2176.283074][T19531]  ? exc_page_fault+0xaf/0xd0
[ 2176.283283][T19531]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 2176.283522][T19531] RIP: 0033:0x7fcab0a26c5e
[ 2176.283743][T19531] 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
[ 2176.284353][T19531] RSP: 002b:00007ffeb7a00230 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2176.284653][T19531] RAX: ffffffffffffffda RBX: 00007fcab0ba25c0 RCX: 00007fcab0a26c5e
[ 2176.284936][T19531] RDX: 0000000000000004 RSI: 0000564384b20c20 RDI: 0000000000000001
[ 2176.285219][T19531] RBP: 00007ffeb7a00240 R08: 0000000000000000 R09: 0000000000000000
[ 2176.285495][T19531] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
[ 2176.285792][T19531] R13: 0000000000000004 R14: 0000564384b20c20 R15: 0000564384ae5690
[ 2176.286080][T19531]  </TASK>
[ 2176.286248][T19531] irq event stamp: 153753
[ 2176.286411][T19531] hardirqs last  enabled at (153763): [<ffffffff92527efa>] __up_console_sem+0x5a/0x70
[ 2176.286734][T19531] hardirqs last disabled at (153774): [<ffffffff92527edf>] __up_console_sem+0x3f/0x70
[ 2176.287052][T19531] softirqs last  enabled at (153688): [<ffffffff9239da5c>] handle_softirqs+0x60c/0x920
[ 2176.287368][T19531] softirqs last disabled at (153681): [<ffffffff9239e1f2>] irq_exit_rcu+0xa2/0xf0
[ 2176.287690][T19531] ---[ end trace 0000000000000000 ]---