smsusb:smsusb_init_device: smscore_start_device(...) failed
------------[ cut here ]------------
workqueue: work disable count underflowed
WARNING: kernel/workqueue.c:4359 at work_offqd_enable kernel/workqueue.c:4359 [inline], CPU#1: kworker/1:6/5930
WARNING: kernel/workqueue.c:4359 at enable_work+0x2ca/0x310 kernel/workqueue.c:4530, CPU#1: kworker/1:6/5930
Modules linked in:
CPU: 1 UID: 0 PID: 5930 Comm: kworker/1:6 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:4359 [inline]
RIP: 0010:enable_work+0x2ca/0x310 kernel/workqueue.c:4530
Code: ff e8 ba 0f 3a 00 90 0f 0b 90 e9 b4 fe ff ff e8 ac 0f 3a 00 e8 17 d9 f1 09 e9 49 ff ff ff e8 9d 0f 3a 00 48 8d 3d 36 09 07 0f <67> 48 0f b9 3a e9 33 fe ff ff 48 89 ef e8 44 f0 a2 00 e9 f7 fd ff
RSP: 0018:ffffc90004c9ec20 EFLAGS: 00010087
RAX: 00000000000bfee7 RBX: 0000000000000000 RCX: ffffc9001b39d000
RDX: 0000000000100000 RSI: ffffffff8184d8b3 RDI: ffffffff908be1f0
RBP: ffff88803529a3b8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88803170c830 R12: 1ffff92000993d85
R13: dffffc0000000000 R14: ffff88803529a000 R15: ffff88802facb180
FS:  0000000000000000(0000) GS:ffff8881249f5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556e733808 CR3: 000000000e184000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __cancel_work_sync kernel/workqueue.c:4400 [inline]
 cancel_work_sync+0x96/0xf0 kernel/workqueue.c:4434
 smsusb_stop_streaming+0xaa/0x210 drivers/media/usb/siano/smsusb.c:183
 smsusb_term_device+0x8f/0x210 drivers/media/usb/siano/smsusb.c:345
 smsusb_init_device+0xac5/0xe70 drivers/media/usb/siano/smsusb.c:497
 smsusb_probe+0x5f8/0x1180 drivers/media/usb/siano/smsusb.c:575
 usb_probe_interface+0x303/0xa80 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:581 [inline]
 really_probe+0x241/0xb20 drivers/base/dd.c:659
 __driver_probe_device+0x1de/0x470 drivers/base/dd.c:801
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831
 __device_attach_driver+0x1df/0x350 drivers/base/dd.c:959
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4e0 drivers/base/dd.c:1031
 device_initial_probe+0xaa/0xc0 drivers/base/dd.c:1086
 bus_probe_device+0x64/0x150 drivers/base/bus.c:574
 device_add+0x116e/0x1980 drivers/base/core.c:3689
 usb_set_configuration+0x1187/0x1e50 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250
 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:581 [inline]
 really_probe+0x241/0xb20 drivers/base/dd.c:659
 __driver_probe_device+0x1de/0x470 drivers/base/dd.c:801
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831
 __device_attach_driver+0x1df/0x350 drivers/base/dd.c:959
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4e0 drivers/base/dd.c:1031
 device_initial_probe+0xaa/0xc0 drivers/base/dd.c:1086
 bus_probe_device+0x64/0x150 drivers/base/bus.c:574
 device_add+0x116e/0x1980 drivers/base/core.c:3689
 usb_new_device+0xd07/0x1a90 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+0x313a/0x52f0 drivers/usb/core/hub.c:5953
 process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	e8 ba 0f 3a 00       	call   0x3a0fbf
   5:	90                   	nop
   6:	0f 0b                	ud2
   8:	90                   	nop
   9:	e9 b4 fe ff ff       	jmp    0xfffffec2
   e:	e8 ac 0f 3a 00       	call   0x3a0fbf
  13:	e8 17 d9 f1 09       	call   0x9f1d92f
  18:	e9 49 ff ff ff       	jmp    0xffffff66
  1d:	e8 9d 0f 3a 00       	call   0x3a0fbf
  22:	48 8d 3d 36 09 07 0f 	lea    0xf070936(%rip),%rdi        # 0xf07095f
* 29:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2e:	e9 33 fe ff ff       	jmp    0xfffffe66
  33:	48 89 ef             	mov    %rbp,%rdi
  36:	e8 44 f0 a2 00       	call   0xa2f07f
  3b:	e9                   	.byte 0xe9
  3c:	f7 fd                	idiv   %ebp
  3e:	ff                   	.byte 0xff