net1080 1-1:0.166 usb0: register 'net1080' at usb-dummy_hcd.0-1, NetChip TurboCONNECT, fe:28:ad:f9:33:43
usb 1-1: USB disconnect, device number 52
net1080 1-1:0.166 usb0: unregister 'net1080' usb-dummy_hcd.0-1, NetChip TurboCONNECT
------------[ cut here ]------------
timer_pending(&dev->watchdog_timer)
WARNING: net/sched/sch_generic.c:1467 at dev_shutdown+0x3c8/0x440 net/sched/sch_generic.c:1467, CPU#1: kworker/1:5/32660
Modules linked in:
CPU: 1 UID: 0 PID: 32660 Comm: kworker/1:5 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:dev_shutdown+0x3c8/0x440 net/sched/sch_generic.c:1467
Code: 48 c7 c2 e0 f6 f5 8c be a3 00 00 00 48 c7 c7 c0 fc f5 8c c6 05 d8 9e 3f 07 01 e8 e3 f2 61 f8 e9 8a fd ff ff e8 39 33 86 f8 90 <0f> 0b 90 e9 5a fe ff ff 4c 89 f7 e8 98 cb f1 f8 e9 65 fc ff ff 4c
RSP: 0018:ffffc9000f4df3f8 EFLAGS: 00010287
RAX: 000000000000fb2d RBX: ffff88808328c4d8 RCX: ffffc90020bfa000
RDX: 0000000000100000 RSI: ffffffff8982a387 RDI: ffff88808328c5b8
RBP: ffff88808328c000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88808328c488
R13: ffffed1010651803 R14: ffff88808328c4d0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88812443c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bfb1bb3660 CR3: 000000002cfb0000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 unregister_netdevice_many_notify+0xd56/0x2580 net/core/dev.c:12414
 unregister_netdevice_many net/core/dev.c:12489 [inline]
 unregister_netdevice_queue net/core/dev.c:12303 [inline]
 unregister_netdevice_queue+0x30b/0x3c0 net/core/dev.c:12293
 unregister_netdevice include/linux/netdevice.h:3409 [inline]
 unregister_netdev+0x1f/0x60 net/core/dev.c:12507
 usbnet_disconnect+0x10a/0x300 drivers/net/usb/usbnet.c:1685
 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:633 [inline]
 device_remove+0x12a/0x180 drivers/base/dd.c:625
 __device_release_driver drivers/base/dd.c:1344 [inline]
 device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1367
 bus_remove_device+0x2bc/0x560 drivers/base/bus.c:657
 device_del+0x376/0x9b0 drivers/base/core.c:3880
 usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1476
 usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2345
 hub_port_connect drivers/usb/core/hub.c:5407 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x1d0c/0x4af0 drivers/usb/core/hub.c:5953
 process_one_work+0xa23/0x19a0 kernel/workqueue.c:3276
 process_scheduled_works kernel/workqueue.c:3359 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3440
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>