dev_deactivate+0xf9/0x1c0 net/sched/sch_generic.c:1398
 linkwatch_do_dev+0x11e/0x160 net/core/link_watch.c:184
 __linkwatch_run_queue+0x233/0x690 net/core/link_watch.c:243
 linkwatch_event+0x8f/0xc0 net/core/link_watch.c:286
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3400
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9 at lib/ref_tracker.c:255 ref_tracker_free+0x61e/0x820 lib/ref_tracker.c:255
Modules linked in:
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.14.0-rc6-syzkaller-g434da42d7173 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:ref_tracker_free+0x61e/0x820 lib/ref_tracker.c:255
Code: 00 44 8b 6b 18 31 ff 44 89 ee e8 4d e0 ee fe 45 85 ed 0f 85 a6 00 00 00 e8 3f e5 ee fe 48 8b 34 24 48 89 ef e8 d3 7e 8d 04 90 <0f> 0b 90 bb ea ff ff ff e9 4e fd ff ff e8 20 e5 ee fe 4c 8d 6d 44
RSP: 0018:ffffc9000009f138 EFLAGS: 00010202
RAX: 0000000000000201 RBX: ffff88811545e980 RCX: 0000000000000000
RDX: 0000000000000202 RSI: ffffffff87282620 RDI: 0000000000000001
RBP: ffff8881341e45c8 R08: 0000000000000001 R09: fffffbfff1f5d3d2
R10: ffffffff8fae9e97 R11: 000000000000000b R12: 1ffff92000013e29
R13: 000000000648033a R14: ffff88811545e998 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555c6ff25300 CR3: 000000011877c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 netdev_tracker_free include/linux/netdevice.h:4302 [inline]
 netdev_put include/linux/netdevice.h:4319 [inline]
 netdev_put include/linux/netdevice.h:4315 [inline]
 netdev_watchdog_down net/sched/sch_generic.c:571 [inline]
 dev_deactivate_many+0x287/0xc30 net/sched/sch_generic.c:1367
 __dev_close_many+0x145/0x360 net/core/dev.c:1706
 dev_close_many+0x24c/0x6a0 net/core/dev.c:1744
 unregister_netdevice_many_notify+0x48a/0x1f30 net/core/dev.c:11856
 unregister_netdevice_many net/core/dev.c:11948 [inline]
 unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11818
 unregister_netdevice include/linux/netdevice.h:3337 [inline]
 unregister_netdev+0x1f/0x60 net/core/dev.c:11966
 usbnet_disconnect+0x109/0x500 drivers/net/usb/usbnet.c:1637
 usb_unbind_interface+0x1da/0x9a0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:569 [inline]
 device_remove+0x122/0x170 drivers/base/dd.c:561
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579
 device_del+0x396/0x9f0 drivers/base/core.c:3855
 usb_disable_device+0x368/0x7e0 drivers/usb/core/message.c:1418
 usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2316
 hub_port_connect drivers/usb/core/hub.c:5371 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5671 [inline]
 port_event drivers/usb/core/hub.c:5831 [inline]
 hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5913
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3400
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>