cdc_ether 6-1:1.0 usb0: unregister 'cdc_ether' usb-dummy_hcd.5-1, CDC Ethernet Device
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timer_pending(&dev->watchdog_timer)
WARNING: net/sched/sch_generic.c:1494 at dev_shutdown+0x3c1/0x440 net/sched/sch_generic.c:1494, CPU#1: kworker/1:1/28
Modules linked in:
CPU: 1 UID: 0 PID: 28 Comm: kworker/1:1 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+0x3c1/0x440 net/sched/sch_generic.c:1494
Code: 48 c7 c2 60 88 6f 88 be a3 00 00 00 48 c7 c7 40 8e 6f 88 c6 05 98 70 78 04 01 e8 aa d8 24 fb e9 8a fd ff ff e8 40 33 48 fb 90 <0f> 0b 90 e9 5a fe ff ff 4c 89 f7 e8 7f 03 ac fb e9 6c fc ff ff 4c
RSP: 0018:ffffc900001e7470 EFLAGS: 00010283
RAX: 00000000000265f8 RBX: ffff888115930490 RCX: ffffc900105f6000
RDX: 0000000000100000 RSI: ffffffff866986c0 RDI: ffff888115930570
RBP: ffff888115930000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 000000000000594b R12: ffff888115930440
R13: ffffed1022b26003 R14: ffff888115930488 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8882687d3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffec4d0518 CR3: 0000000140cea000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 unregister_netdevice_many_notify+0xd00/0x23e0 net/core/dev.c:12389
 unregister_netdevice_many net/core/dev.c:12464 [inline]
 unregister_netdevice_queue net/core/dev.c:12278 [inline]
 unregister_netdevice_queue+0x30b/0x3c0 net/core/dev.c:12268
 unregister_netdevice include/linux/netdevice.h:3408 [inline]
 unregister_netdev+0x1f/0x60 net/core/dev.c:12482
 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:573 [inline]
 device_remove+0x12a/0x180 drivers/base/dd.c:565
 __device_release_driver drivers/base/dd.c:1284 [inline]
 device_release_driver_internal+0x42e/0x600 drivers/base/dd.c:1307
 bus_remove_device+0x22f/0x440 drivers/base/bus.c:616
 device_del+0x376/0x9b0 drivers/base/core.c:3878
 usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1418
 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+0x9d7/0x1920 kernel/workqueue.c:3275
 process_scheduled_works kernel/workqueue.c:3358 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3439
 kthread+0x370/0x450 kernel/kthread.c:467
 ret_from_fork+0x6c3/0xcb0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>