smsmdtv:smscore_start_device: set device mode failed , rc -22 smsusb:smsusb_init_device: smscore_start_device(...) failed ------------[ cut here ]------------ workqueue: work disable count underflowed WARNING: CPU: 0 PID: 1539 at kernel/workqueue.c:4355 work_offqd_enable kernel/workqueue.c:4355 [inline] WARNING: CPU: 0 PID: 1539 at kernel/workqueue.c:4355 enable_work+0x2f8/0x340 kernel/workqueue.c:4526 Modules linked in: CPU: 0 UID: 0 PID: 1539 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: usb_hub_wq hub_event RIP: 0010:work_offqd_enable kernel/workqueue.c:4355 [inline] RIP: 0010:enable_work+0x2f8/0x340 kernel/workqueue.c:4526 Code: 89 ee e8 eb b9 38 00 45 84 ed 0f 85 29 fe ff ff e8 fd be 38 00 c6 05 67 29 e6 0e 01 90 48 c7 c7 20 29 8c 8b e8 a9 f0 f6 ff 90 <0f> 0b 90 90 e9 06 fe ff ff 48 89 ef e8 77 4c a1 00 e9 aa fe ff ff RSP: 0018:ffffc9000429ecc8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90019f79000 RDX: 0000000000100000 RSI: ffffffff817b3ef5 RDI: 0000000000000001 RBP: ffff8880256972d8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff92000853d9a R13: 0000000000000000 R14: ffff888025697000 R15: ffff888034ce7200 FS: 0000000000000000(0000) GS:ffff888124a0a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32f05ff8 CR3: 0000000032d7f000 CR4: 00000000003526f0 Call Trace: __cancel_work_sync+0xe7/0x130 kernel/workqueue.c:4396 smsusb_stop_streaming+0xaa/0x210 drivers/media/usb/siano/smsusb.c:183 smsusb_term_device+0x8f/0x1e0 drivers/media/usb/siano/smsusb.c:345 smsusb_init_device+0xaa0/0xe00 drivers/media/usb/siano/smsusb.c:497 smsusb_probe+0x5d3/0x1090 drivers/media/usb/siano/smsusb.c:575 usb_probe_interface+0x303/0xa40 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:581 [inline] really_probe+0x241/0xa90 drivers/base/dd.c:659 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:801 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:959 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:462 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1031 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537 device_add+0x1148/0x1aa0 drivers/base/core.c:3689 usb_set_configuration+0x1187/0x1e20 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250 usb_probe_device+0xef/0x3e0 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:581 [inline] really_probe+0x241/0xa90 drivers/base/dd.c:659 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:801 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:959 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:462 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1031 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537 device_add+0x1148/0x1aa0 drivers/base/core.c:3689 usb_new_device+0xd07/0x1a60 drivers/usb/core/hub.c:2694 hub_port_connect drivers/usb/core/hub.c:5566 [inline] hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] port_event drivers/usb/core/hub.c:5870 [inline] hub_event+0x2f34/0x4fe0 drivers/usb/core/hub.c:5952 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427 kthread+0x3c5/0x780 kernel/kthread.c:463 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245