usb 3-1: USB disconnect, device number 97 ------------[ cut here ]------------ workqueue: work disable count underflowed WARNING: kernel/workqueue.c:4410 at work_offqd_enable kernel/workqueue.c:4410 [inline], CPU#0: kworker/0:1/11565 WARNING: kernel/workqueue.c:4410 at enable_work+0x1c7/0x230 kernel/workqueue.c:4581, CPU#0: kworker/0:1/11565 Modules linked in: CPU: 0 UID: 0 PID: 11565 Comm: kworker/0:1 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:work_offqd_enable kernel/workqueue.c:4410 [inline] RIP: 0010:enable_work+0x1c7/0x230 kernel/workqueue.c:4581 Code: 4f ed 37 00 4d 85 f6 75 48 e8 45 ed 37 00 eb 47 e8 3e ed 37 00 90 0f 0b 90 e9 bc fe ff ff e8 30 ed 37 00 48 8d 3d 29 01 87 0e <67> 48 0f b9 3a e9 d2 fe ff ff e8 1a ed 37 00 90 0f 0b 90 e9 1d ff RSP: 0000:ffffc900045c7018 EFLAGS: 00010083 RAX: ffffffff818dc7a0 RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc900199f9000 RSI: 000000000000722b RDI: ffffffff9014c8d0 RBP: 0000000000000000 R08: ffff8880463d6787 R09: 1ffff11008c7acf0 R10: dffffc0000000000 R11: ffffed1008c7acf1 R12: 1ffff11008c7acf0 R13: 001fffffffc00001 R14: ffff8880463d6780 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125457000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000000c0 CR3: 00000000912a0000 CR4: 00000000003526f0 Call Trace: __cancel_work_sync+0xf7/0x110 kernel/workqueue.c:4451 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:631 [inline] __device_release_driver drivers/base/dd.c:1344 [inline] device_release_driver_internal+0x46f/0x870 drivers/base/dd.c:1367 bus_remove_device+0x455/0x570 drivers/base/bus.c:657 device_del+0x527/0x8f0 drivers/base/core.c:3880 hid_remove_device drivers/hid/hid-core.c:3009 [inline] hid_destroy_device+0x6b/0x1b0 drivers/hid/hid-core.c:3031 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:633 [inline] __device_release_driver drivers/base/dd.c:1344 [inline] device_release_driver_internal+0x4d9/0x870 drivers/base/dd.c:1367 bus_remove_device+0x455/0x570 drivers/base/bus.c:657 device_del+0x527/0x8f0 drivers/base/core.c:3880 usb_disable_device+0x3d4/0x8d0 drivers/usb/core/message.c:1476 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:3276 [inline] process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440 kthread+0x388/0x470 kernel/kthread.c:436 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), 3 bytes skipped: 0: 00 4d 85 add %cl,-0x7b(%rbp) 3: f6 75 48 divb 0x48(%rbp) 6: e8 45 ed 37 00 call 0x37ed50 b: eb 47 jmp 0x54 d: e8 3e ed 37 00 call 0x37ed50 12: 90 nop 13: 0f 0b ud2 15: 90 nop 16: e9 bc fe ff ff jmp 0xfffffed7 1b: e8 30 ed 37 00 call 0x37ed50 20: 48 8d 3d 29 01 87 0e lea 0xe870129(%rip),%rdi # 0xe870150 * 27: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2c: e9 d2 fe ff ff jmp 0xffffff03 31: e8 1a ed 37 00 call 0x37ed50 36: 90 nop 37: 0f 0b ud2 39: 90 nop 3a: e9 .byte 0xe9 3b: 1d .byte 0x1d 3c: ff .byte 0xff