usb 5-1: USB disconnect, device number 2
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workqueue: work disable count underflowed
WARNING: kernel/workqueue.c:4359 at work_offqd_enable kernel/workqueue.c:4359 [inline], CPU#0: kworker/0:4/5309
WARNING: kernel/workqueue.c:4359 at enable_work+0x1c7/0x230 kernel/workqueue.c:4530, CPU#0: kworker/0:4/5309
Modules linked in:
CPU: 0 UID: 0 PID: 5309 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: usb_hub_wq hub_event
RIP: 0010:work_offqd_enable kernel/workqueue.c:4359 [inline]
RIP: 0010:enable_work+0x1c7/0x230 kernel/workqueue.c:4530
Code: df dd 37 00 4d 85 f6 75 48 e8 d5 dd 37 00 eb 47 e8 ce dd 37 00 90 0f 0b 90 e9 bc fe ff ff e8 c0 dd 37 00 48 8d 3d 79 81 65 0e <67> 48 0f b9 3a e9 d2 fe ff ff e8 aa dd 37 00 90 0f 0b 90 e9 1d ff
RSP: 0018:ffffc9000ac4f0e0 EFLAGS: 00010093
RAX: ffffffff818ca930 RBX: 0000000000000000 RCX: ffff8880126b8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8ff22ab0
RBP: 0000000000000000 R08: ffff88803341873f R09: 1ffff110066830e7
R10: dffffc0000000000 R11: ffffed10066830e8 R12: 1ffff110066830e7
R13: 001fffffffc00001 R14: ffff888033418738 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88808ccea000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005614a36e2a70 CR3: 000000003b9f6000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __cancel_work_sync+0xf7/0x110 kernel/workqueue.c:4400
 thermal_zone_device_unregister+0x23e/0x3f0 drivers/thermal/thermal_core.c:1719
 psy_unregister_thermal drivers/power/supply/power_supply_core.c:1551 [inline]
 power_supply_unregister+0xf9/0x140 drivers/power/supply/power_supply_core.c:1767
 thunderstrike_destroy drivers/hid/hid-nvidia-shield.c:927 [inline]
 shield_remove+0x72/0x120 drivers/hid/hid-nvidia-shield.c:1104
 hid_device_remove+0x228/0x370 drivers/hid/hid-core.c:-1
 device_remove drivers/base/dd.c:571 [inline]
 __device_release_driver drivers/base/dd.c:1284 [inline]
 device_release_driver_internal+0x46f/0x860 drivers/base/dd.c:1307
 bus_remove_device+0x34d/0x440 drivers/base/bus.c:616
 device_del+0x527/0x8f0 drivers/base/core.c:3878
 hid_remove_device drivers/hid/hid-core.c:3008 [inline]
 hid_destroy_device+0x6b/0x1b0 drivers/hid/hid-core.c:3030
 usbhid_disconnect+0x9f/0xc0 drivers/hid/usbhid/hid-core.c:1477
 usb_unbind_interface+0x26e/0x910 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:573 [inline]
 __device_release_driver drivers/base/dd.c:1284 [inline]
 device_release_driver_internal+0x4d9/0x860 drivers/base/dd.c:1307
 bus_remove_device+0x34d/0x440 drivers/base/bus.c:616
 device_del+0x527/0x8f0 drivers/base/core.c:3878
 usb_disable_device+0x3d4/0x8d0 drivers/usb/core/message.c:1418
 usb_disconnect+0x32f/0x990 drivers/usb/core/hub.c:2345
 hub_port_connect drivers/usb/core/hub.c:5407 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x1cc9/0x4f30 drivers/usb/core/hub.c:5953
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
 worker_thread+0xda6/0x1360 kernel/workqueue.c:3421
 kthread+0x726/0x8b0 kernel/kthread.c:463
 ret_from_fork+0x51b/0xa40 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:	dd 37                	fnsave (%rdi)
   2:	00 4d 85             	add    %cl,-0x7b(%rbp)
   5:	f6 75 48             	divb   0x48(%rbp)
   8:	e8 d5 dd 37 00       	call   0x37dde2
   d:	eb 47                	jmp    0x56
   f:	e8 ce dd 37 00       	call   0x37dde2
  14:	90                   	nop
  15:	0f 0b                	ud2
  17:	90                   	nop
  18:	e9 bc fe ff ff       	jmp    0xfffffed9
  1d:	e8 c0 dd 37 00       	call   0x37dde2
  22:	48 8d 3d 79 81 65 0e 	lea    0xe658179(%rip),%rdi        # 0xe6581a2
* 29:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2e:	e9 d2 fe ff ff       	jmp    0xffffff05
  33:	e8 aa dd 37 00       	call   0x37dde2
  38:	90                   	nop
  39:	0f 0b                	ud2
  3b:	90                   	nop
  3c:	e9                   	.byte 0xe9
  3d:	1d                   	.byte 0x1d
  3e:	ff                   	.byte 0xff