------------[ cut here ]------------
workqueue: work disable count underflowed
WARNING: kernel/workqueue.c:4359 at work_offqd_enable kernel/workqueue.c:4359 [inline], CPU#0: kworker/0:1/10
WARNING: kernel/workqueue.c:4359 at enable_work+0x2d1/0x320 kernel/workqueue.c:4530, CPU#0: kworker/0:1/10
Modules linked in:
CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
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+0x2d1/0x320 kernel/workqueue.c:4530
Code: ff e8 b3 78 38 00 e8 6e 4b a8 09 e9 61 ff ff ff e8 a4 78 38 00 90 0f 0b 90 e9 17 fe ff ff e8 96 78 38 00 48 8d 3d 0f c0 eb 0e <67> 48 0f b9 3a 45 31 f6 e9 36 fe ff ff 48 89 ef e8 0a cc a2 00 e9
RSP: 0018:ffffc900000d7348 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81ce8520
RDX: ffff88801dae0000 RSI: ffffffff81ce86ea RDI: ffffffff90ba4700
RBP: ffff88802687f738 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 1ffff9200001ae6a R14: ffff88802687f698 R15: 000000007fffffff
FS:  0000000000000000(0000) GS:ffff8880d65d9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4a2e74da08 CR3: 0000000057ab1000 CR4: 0000000000352ef0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __cancel_work_sync kernel/workqueue.c:4400 [inline]
 cancel_delayed_work_sync+0x96/0xf0 kernel/workqueue.c:4471
 thermal_zone_device_unregister drivers/thermal/thermal_core.c:1719 [inline]
 thermal_zone_device_unregister+0x28e/0x4e0 drivers/thermal/thermal_core.c:1709
 psy_unregister_thermal drivers/power/supply/power_supply_core.c:1551 [inline]
 power_supply_unregister+0x10a/0x150 drivers/power/supply/power_supply_core.c:1767
 thunderstrike_destroy drivers/hid/hid-nvidia-shield.c:927 [inline]
 shield_remove+0x75/0x130 drivers/hid/hid-nvidia-shield.c:1104
 hid_device_remove+0xd1/0x270 drivers/hid/hid-core.c:2831
 device_remove+0xcb/0x180 drivers/base/dd.c:571
 __device_release_driver drivers/base/dd.c:1284 [inline]
 device_release_driver_internal+0x42e/0x600 drivers/base/dd.c:1307
 bus_remove_device+0x22f/0x440 drivers/base/bus.c:616
 device_del+0x376/0x9b0 drivers/base/core.c:3878
 hid_remove_device drivers/hid/hid-core.c:3008 [inline]
 hid_destroy_device+0x19c/0x240 drivers/hid/hid-core.c:3030
 usbhid_disconnect+0xa0/0xe0 drivers/hid/usbhid/hid-core.c:1477
 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:573 [inline]
 device_remove+0x12a/0x180 drivers/base/dd.c:565
 __device_release_driver drivers/base/dd.c:1284 [inline]
 device_release_driver_internal+0x42e/0x600 drivers/base/dd.c:1307
 bus_remove_device+0x22f/0x440 drivers/base/bus.c:616
 device_del+0x376/0x9b0 drivers/base/core.c:3878
 usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1418
 usb_disconnect+0x2e2/0x9a0 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+0x1d0c/0x4af0 drivers/usb/core/hub.c:5953
 process_one_work+0x9c2/0x1840 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3421
 kthread+0x3b3/0x730 kernel/kthread.c:463
 ret_from_fork+0x754/0xaf0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
----------------
Code disassembly (best guess):
   0:	ff                   	ljmp   (bad)
   1:	e8 b3 78 38 00       	call   0x3878b9
   6:	e8 6e 4b a8 09       	call   0x9a84b79
   b:	e9 61 ff ff ff       	jmp    0xffffff71
  10:	e8 a4 78 38 00       	call   0x3878b9
  15:	90                   	nop
  16:	0f 0b                	ud2
  18:	90                   	nop
  19:	e9 17 fe ff ff       	jmp    0xfffffe35
  1e:	e8 96 78 38 00       	call   0x3878b9
  23:	48 8d 3d 0f c0 eb 0e 	lea    0xeebc00f(%rip),%rdi        # 0xeebc039
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	45 31 f6             	xor    %r14d,%r14d
  32:	e9 36 fe ff ff       	jmp    0xfffffe6d
  37:	48 89 ef             	mov    %rbp,%rdi
  3a:	e8 0a cc a2 00       	call   0xa2cc49
  3f:	e9                   	.byte 0xe9