------------[ cut here ]------------ workqueue: work disable count underflowed WARNING: kernel/workqueue.c:4353 at work_offqd_enable kernel/workqueue.c:4353 [inline], CPU#0: kworker/0:2/130 WARNING: kernel/workqueue.c:4353 at enable_work+0x2b1/0x2c0 kernel/workqueue.c:4524, CPU#0: kworker/0:2/130 Modules linked in: CPU: 0 UID: 0 PID: 130 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: usb_hub_wq hub_event RIP: 0010:work_offqd_enable kernel/workqueue.c:4353 [inline] RIP: 0010:enable_work+0x2b1/0x2c0 kernel/workqueue.c:4524 Code: 41 5e 41 5f 5d c3 cc cc cc cc cc e8 d9 f4 d9 09 e8 24 ae 36 00 c6 05 50 27 1e 0e 01 90 48 c7 c7 40 00 8a 8b e8 e0 cc f8 ff 90 <0f> 0b 90 90 e9 69 ff ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 RSP: 0018:ffffc90002e96a80 EFLAGS: 00010046 RAX: 36ca6904f9f80100 RBX: ffff888052cf7118 RCX: 0000000000100000 RDX: ffffc900166cc000 RSI: 000000000003233d RDI: 000000000003233e RBP: ffffc90002e96b30 R08: ffff8880b86247d3 R09: 1ffff110170c48fa R10: dffffc0000000000 R11: ffffed10170c48fb R12: 1ffff920005d2d54 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000800001 FS: 0000000000000000(0000) GS:ffff888125a6f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c37511c CR3: 000000000e138000 CR4: 00000000003526f0 Call Trace: __cancel_work_sync+0xf7/0x110 kernel/workqueue.c:4394 smsusb_stop_streaming drivers/media/usb/siano/smsusb.c:183 [inline] smsusb_term_device+0xe2/0x3e0 drivers/media/usb/siano/smsusb.c:345 smsusb_init_device drivers/media/usb/siano/smsusb.c:497 [inline] smsusb_probe+0x1a20/0x21f0 drivers/media/usb/siano/smsusb.c:575 usb_probe_interface+0x668/0xc90 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x26d/0xad0 drivers/base/dd.c:659 __driver_probe_device+0x18c/0x320 drivers/base/dd.c:801 driver_probe_device+0x4f/0x240 drivers/base/dd.c:831 __device_attach_driver+0x279/0x430 drivers/base/dd.c:959 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:500 __device_attach+0x2b8/0x430 drivers/base/dd.c:1031 bus_probe_device+0x185/0x260 drivers/base/bus.c:575 device_add+0x7b6/0xb80 drivers/base/core.c:3745 usb_set_configuration+0x1a87/0x2110 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250 usb_probe_device+0x1c4/0x3c0 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x26d/0xad0 drivers/base/dd.c:659 __driver_probe_device+0x18c/0x320 drivers/base/dd.c:801 driver_probe_device+0x4f/0x240 drivers/base/dd.c:831 __device_attach_driver+0x279/0x430 drivers/base/dd.c:959 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:500 __device_attach+0x2b8/0x430 drivers/base/dd.c:1031 bus_probe_device+0x185/0x260 drivers/base/bus.c:575 device_add+0x7b6/0xb80 drivers/base/core.c:3745 usb_new_device+0xa39/0x1720 drivers/usb/core/hub.c:2695 hub_port_connect drivers/usb/core/hub.c:5567 [inline] hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] port_event drivers/usb/core/hub.c:5871 [inline] hub_event+0x29b1/0x4ef0 drivers/usb/core/hub.c:5953 process_one_work+0x93a/0x15e0 kernel/workqueue.c:3261 process_scheduled_works kernel/workqueue.c:3344 [inline] worker_thread+0x9b0/0xee0 kernel/workqueue.c:3425 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246