__linkwatch_run_queue+0x233/0x690 net/core/link_watch.c:234 linkwatch_event+0x8f/0xc0 net/core/link_watch.c:277 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5246 at lib/ref_tracker.c:255 ref_tracker_free+0x61e/0x820 lib/ref_tracker.c:255 Modules linked in: CPU: 1 UID: 0 PID: 5246 Comm: kworker/1:5 Not tainted 6.12.0-rc4-syzkaller-00052-gc6d9e43954bf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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 ad 23 f1 fe 45 85 ed 0f 85 a6 00 00 00 e8 5f 21 f1 fe 48 8b 34 24 48 89 ef e8 03 05 8c 04 90 <0f> 0b 90 bb ea ff ff ff e9 4e fd ff ff e8 40 21 f1 fe 4c 8d 6d 44 RSP: 0018:ffffc90002717210 EFLAGS: 00010202 RAX: 0000000000000201 RBX: ffff888111d1f200 RCX: 0000000000000000 RDX: 0000000000000202 RSI: ffffffff8727f220 RDI: 0000000000000001 RBP: ffff888109f0c5e0 R08: 0000000000000001 R09: fffffbfff1f561c6 R10: ffffffff8fab0e37 R11: 0000000000000001 R12: 1ffff920004e2e44 R13: 00000000045002b0 R14: ffff888111d1f218 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005593963027d8 CR3: 0000000110346000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netdev_tracker_free include/linux/netdevice.h:4070 [inline] netdev_put include/linux/netdevice.h:4087 [inline] netdev_put include/linux/netdevice.h:4083 [inline] dev_watchdog_down net/sched/sch_generic.c:570 [inline] dev_deactivate_many+0x215/0xb20 net/sched/sch_generic.c:1363 __dev_close_many+0x145/0x310 net/core/dev.c:1547 dev_close_many+0x24c/0x6a0 net/core/dev.c:1585 unregister_netdevice_many_notify+0x489/0x1e50 net/core/dev.c:11377 unregister_netdevice_many net/core/dev.c:11465 [inline] unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11339 unregister_netdevice include/linux/netdevice.h:3118 [inline] unregister_netdev+0x1c/0x30 net/core/dev.c:11483 usbnet_disconnect+0x109/0x500 drivers/net/usb/usbnet.c:1637 usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461 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:576 device_del+0x396/0x9f0 drivers/base/core.c:3864 usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418 usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304 hub_port_connect drivers/usb/core/hub.c:5361 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5903 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244