usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 1-1: config 0 descriptor?? INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 1 PID: 3264 Comm: kworker/1:3 Not tainted 5.4.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 assign_lock_key kernel/locking/lockdep.c:881 [inline] register_lock_class+0x1022/0x11d0 kernel/locking/lockdep.c:1190 __lock_acquire+0xfc/0x3b60 kernel/locking/lockdep.c:3837 lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4487 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 ida_destroy+0xb0/0x3a0 lib/idr.c:551 media_device_cleanup+0x15/0x70 drivers/media/mc/mc-device.c:722 uvc_delete+0x8e/0x2f0 drivers/media/usb/uvc/uvc_driver.c:1872 kref_put include/linux/kref.h:65 [inline] uvc_probe+0xf95/0x64e4 drivers/media/usb/uvc/uvc_driver.c:2223 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0xae6/0x16f0 drivers/base/core.c:2202 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x6d0 drivers/base/dd.c:548 driver_probe_device+0x104/0x210 drivers/base/dd.c:721 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x360 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0xae6/0x16f0 drivers/base/core.c:2202 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2537 hub_port_connect drivers/usb/core/hub.c:5184 [inline] hub_port_connect_change drivers/usb/core/hub.c:5324 [inline] port_event drivers/usb/core/hub.c:5470 [inline] hub_event+0x1df8/0x3800 drivers/usb/core/hub.c:5552 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 usb 1-1: USB disconnect, device number 28 usb 1-1: new high-speed USB device number 29 using dummy_hcd usb 1-1: config 0 has an invalid descriptor of length 176, skipping remainder of the config usb 1-1: New USB device found, idVendor=046d, idProduct=08c2, bcdDevice=95.7e usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 1-1: config 0 descriptor?? usb 1-1: USB disconnect, device number 29 usb 2-1: new high-speed USB device number 30 using dummy_hcd usb 2-1: Using ep0 maxpacket: 32 usb 2-1: device descriptor read/all, error -71 usb 2-1: new high-speed USB device number 31 using dummy_hcd usb 2-1: device descriptor read/64, error 18 usb 2-1: device descriptor read/64, error 18 usb usb2-port1: attempt power cycle usb 2-1: new high-speed USB device number 32 using dummy_hcd usb 2-1: device descriptor read/64, error 18 usb 2-1: device descriptor read/64, error 18 usb 2-1: new high-speed USB device number 33 using dummy_hcd usb 2-1: device descriptor read/64, error 18 usb 2-1: config 0 has an invalid descriptor of length 120, skipping remainder of the config usb 2-1: New USB device found, idVendor=18cd, idProduct=cafe, bcdDevice= 3.bb usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 2-1: config 0 descriptor?? uvcvideo: Found UVC 0.00 device (18cd:cafe) uvcvideo: No valid video chain found. usb 6-1: USB disconnect, device number 23