------------[ cut here ]------------ workqueue: work disable count underflowed WARNING: kernel/workqueue.c:4409 at work_offqd_enable kernel/workqueue.c:4409 [inline], CPU#0: kworker/0:6/5913 WARNING: kernel/workqueue.c:4409 at enable_work+0x1c7/0x230 kernel/workqueue.c:4580, CPU#0: kworker/0:6/5913 Modules linked in: CPU: 0 UID: 0 PID: 5913 Comm: kworker/0:6 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:work_offqd_enable kernel/workqueue.c:4409 [inline] RIP: 0010:enable_work+0x1c7/0x230 kernel/workqueue.c:4580 Code: 3f ca 37 00 4d 85 f6 75 48 e8 35 ca 37 00 eb 47 e8 2e ca 37 00 90 0f 0b 90 e9 bc fe ff ff e8 20 ca 37 00 48 8d 3d c9 b8 86 0e <67> 48 0f b9 3a e9 d2 fe ff ff e8 0a ca 37 00 90 0f 0b 90 e9 1d ff RSP: 0018:ffffc900048cf160 EFLAGS: 00010083 RAX: ffffffff818dc190 RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9001baa9000 RSI: 00000000000096d2 RDI: ffffffff90147a60 RBP: 0000000000000000 R08: ffff88807a4b173f R09: 1ffff1100f4962e7 R10: dffffc0000000000 R11: ffffed100f4962e8 R12: 1ffff1100f4962e7 R13: 001fffffffc00001 R14: ffff88807a4b1738 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125464000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30b04ff8 CR3: 000000007b30e000 CR4: 00000000003526f0 Call Trace: __cancel_work_sync+0xf7/0x110 kernel/workqueue.c:4450 thermal_zone_device_unregister+0x23e/0x3f0 drivers/thermal/thermal_core.c:1723 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:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ca 37 00 lret $0x37 3: 4d 85 f6 test %r14,%r14 6: 75 48 jne 0x50 8: e8 35 ca 37 00 call 0x37ca42 d: eb 47 jmp 0x56 f: e8 2e ca 37 00 call 0x37ca42 14: 90 nop 15: 0f 0b ud2 17: 90 nop 18: e9 bc fe ff ff jmp 0xfffffed9 1d: e8 20 ca 37 00 call 0x37ca42 22: 48 8d 3d c9 b8 86 0e lea 0xe86b8c9(%rip),%rdi # 0xe86b8f2 * 29: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2e: e9 d2 fe ff ff jmp 0xffffff05 33: e8 0a ca 37 00 call 0x37ca42 38: 90 nop 39: 0f 0b ud2 3b: 90 nop 3c: e9 .byte 0xe9 3d: 1d .byte 0x1d 3e: ff .byte 0xff