------------[ cut here ]------------ workqueue: work disable count underflowed WARNING: kernel/workqueue.c:4359 at work_offqd_enable kernel/workqueue.c:4359 [inline], CPU#0: kworker/0:6/5979 WARNING: kernel/workqueue.c:4359 at enable_work+0x1b3/0x220 kernel/workqueue.c:4530, CPU#0: kworker/0:6/5979 Modules linked in: CPU: 0 UID: 0 PID: 5979 Comm: kworker/0:6 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)} Tainted: [L]=SOFTLOCKUP 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+0x1b3/0x220 kernel/workqueue.c:4530 Code: f3 11 35 00 4d 85 f6 75 48 e8 e9 11 35 00 eb 47 e8 e2 11 35 00 90 0f 0b 90 e9 d0 fe ff ff e8 d4 11 35 00 48 8d 3d 1d 5a 53 0d <67> 48 0f b9 3a e9 e6 fe ff ff e8 be 11 35 00 90 0f 0b 90 e9 1a ff RSP: 0018:ffffc90004f9f0e0 EFLAGS: 00010087 RAX: ffffffff818a984c RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9001c9bf000 RSI: 00000000000071c4 RDI: ffffffff8eddf270 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed100c196d04 R12: 1ffff1100c196d03 R13: 001fffffffc00001 R14: ffff888060cb6818 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888126cef000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c38fc47 CR3: 000000000d3a8000 CR4: 00000000003526f0 Call Trace: __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+0x22b/0x370 drivers/hid/hid-core.c:-1 device_remove drivers/base/dd.c:569 [inline] __device_release_driver drivers/base/dd.c:1282 [inline] device_release_driver_internal+0x46f/0x800 drivers/base/dd.c:1305 bus_remove_device+0x355/0x450 drivers/base/bus.c:616 device_del+0x515/0x8e0 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:1462 usb_unbind_interface+0x26e/0x910 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:571 [inline] __device_release_driver drivers/base/dd.c:1282 [inline] device_release_driver_internal+0x4d9/0x800 drivers/base/dd.c:1305 bus_remove_device+0x355/0x450 drivers/base/bus.c:616 device_del+0x515/0x8e0 drivers/base/core.c:3878 usb_disable_device+0x3d4/0x8e0 drivers/usb/core/message.c:1418 usb_disconnect+0x315/0x970 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+0x1cd9/0x4f30 drivers/usb/core/hub.c:5953 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 ---------------- Code disassembly (best guess): 0: f3 11 35 00 4d 85 f6 repz adc %esi,-0x97ab300(%rip) # 0xf6854d07 7: 75 48 jne 0x51 9: e8 e9 11 35 00 call 0x3511f7 e: eb 47 jmp 0x57 10: e8 e2 11 35 00 call 0x3511f7 15: 90 nop 16: 0f 0b ud2 18: 90 nop 19: e9 d0 fe ff ff jmp 0xfffffeee 1e: e8 d4 11 35 00 call 0x3511f7 23: 48 8d 3d 1d 5a 53 0d lea 0xd535a1d(%rip),%rdi # 0xd535a47 * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 e6 fe ff ff jmp 0xffffff1a 34: e8 be 11 35 00 call 0x3511f7 39: 90 nop 3a: 0f 0b ud2 3c: 90 nop 3d: e9 .byte 0xe9 3e: 1a ff sbb %bh,%bh