smsmdtv:smscore_set_device_mode: mode detect failed -71
smsmdtv:smscore_start_device: set device mode failed , rc -71
smsusb:smsusb_init_device: smscore_start_device(...) failed
------------[ cut here ]------------
workqueue: work disable count underflowed
WARNING: kernel/workqueue.c:4456 at work_offqd_enable kernel/workqueue.c:4456 [inline], CPU#1: kworker/1:1/29
WARNING: kernel/workqueue.c:4456 at enable_work+0x1c7/0x230 kernel/workqueue.c:4627, CPU#1: kworker/1:1/29
Modules linked in:
CPU: 1 UID: 0 PID: 29 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:work_offqd_enable kernel/workqueue.c:4456 [inline]
RIP: 0010:enable_work+0x1c7/0x230 kernel/workqueue.c:4627
Code: 1f c4 38 00 4d 85 f6 75 48 e8 15 c4 38 00 eb 47 e8 0e c4 38 00 90 0f 0b 90 e9 bc fe ff ff e8 00 c4 38 00 48 8d 3d 79 7d cc 0e <67> 48 0f b9 3a e9 d2 fe ff ff e8 ea c3 38 00 90 0f 0b 90 e9 1d ff
RSP: 0018:ffffc90000a46ba0 EFLAGS: 00010093
RAX: ffffffff818e4e70 RBX: 0000000000000000 RCX: ffff88801e680000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff905acbf0
RBP: 0000000000000000 R08: ffff8880b873a883 R09: 1ffff110170e7510
R10: dffffc0000000000 R11: ffffed10170e7511 R12: 1ffff1100fc92c5b
R13: 0000000001800001 R14: ffff88807e4962d8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88812504b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e863fff CR3: 000000000e946000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __cancel_work_sync+0xf7/0x110 kernel/workqueue.c:4497
 smsusb_stop_streaming drivers/media/usb/siano/smsusb.c:183 [inline]
 smsusb_term_device+0xdd/0x3d0 drivers/media/usb/siano/smsusb.c:345
 smsusb_init_device drivers/media/usb/siano/smsusb.c:497 [inline]
 smsusb_probe+0x1aba/0x2280 drivers/media/usb/siano/smsusb.c:575
 usb_probe_interface+0x653/0xc60 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x254/0xae0 drivers/base/dd.c:706
 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898
 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026
 bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500
 __device_attach+0x2c4/0x450 drivers/base/dd.c:1098
 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x12a/0x220 drivers/base/bus.c:620
 device_add+0x7d7/0xb80 drivers/base/core.c:3772
 usb_set_configuration+0x1ad8/0x2180 drivers/usb/core/message.c:2268
 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
 usb_probe_device+0x1c3/0x3b0 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x254/0xae0 drivers/base/dd.c:706
 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898
 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026
 bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500
 __device_attach+0x2c4/0x450 drivers/base/dd.c:1098
 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x12a/0x220 drivers/base/bus.c:620
 device_add+0x7d7/0xb80 drivers/base/core.c:3772
 usb_new_device+0x99d/0x1620 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+0x28e8/0x4d30 drivers/usb/core/hub.c:5953
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	38 00                	cmp    %al,(%rax)
   2:	4d 85 f6             	test   %r14,%r14
   5:	75 48                	jne    0x4f
   7:	e8 15 c4 38 00       	call   0x38c421
   c:	eb 47                	jmp    0x55
   e:	e8 0e c4 38 00       	call   0x38c421
  13:	90                   	nop
  14:	0f 0b                	ud2
  16:	90                   	nop
  17:	e9 bc fe ff ff       	jmp    0xfffffed8
  1c:	e8 00 c4 38 00       	call   0x38c421
  21:	48 8d 3d 79 7d cc 0e 	lea    0xecc7d79(%rip),%rdi        # 0xecc7da1
* 28:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2d:	e9 d2 fe ff ff       	jmp    0xffffff04
  32:	e8 ea c3 38 00       	call   0x38c421
  37:	90                   	nop
  38:	0f 0b                	ud2
  3a:	90                   	nop
  3b:	e9                   	.byte 0xe9
  3c:	1d                   	.byte 0x1d
  3d:	ff                   	.byte 0xff