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?? INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 3279 Comm: kworker/0:3 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 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 usb 2-1: USB disconnect, device number 21 usb 1-1: USB disconnect, device number 96 usb 1-1: USB disconnect, device number 98 usb 4-1: new high-speed USB device number 48 using dummy_hcd usb 4-1: New USB device found, idVendor=1b3d, idProduct=015c, bcdDevice=97.9b usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 4-1: config 0 descriptor?? ftdi_sio 4-1:0.0: FTDI USB Serial Device converter detected usb 4-1: Detected FT-X ftdi_sio ttyUSB0: Unable to read latency timer: -71 ftdi_sio ttyUSB0: Unable to write latency timer: -71 ftdi_sio 4-1:0.0: GPIO initialisation failed: -71 usb 4-1: FTDI USB Serial Device converter now attached to ttyUSB0 usb 4-1: USB disconnect, device number 48 ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0 ftdi_sio 4-1:0.0: device disconnected usb 4-1: new high-speed USB device number 49 using dummy_hcd usb 4-1: New USB device found, idVendor=1b3d, idProduct=015c, bcdDevice=97.9b usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 4-1: config 0 descriptor?? ftdi_sio 4-1:0.0: FTDI USB Serial Device converter detected usb 4-1: Detected FT-X ftdi_sio ttyUSB0: Unable to read latency timer: -71 ftdi_sio ttyUSB0: Unable to write latency timer: -71 ftdi_sio 4-1:0.0: GPIO initialisation failed: -71 usb 4-1: FTDI USB Serial Device converter now attached to ttyUSB0 usb 4-1: USB disconnect, device number 49 ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0 ftdi_sio 4-1:0.0: device disconnected usb 4-1: new high-speed USB device number 50 using dummy_hcd usb 4-1: Using ep0 maxpacket: 16 usb 4-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 usb 4-1: config 0 interface 0 altsetting 0 endpoint 0x81 has wMaxPacketSize 0, skipping usb 4-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 9 usb 4-1: New USB device found, idVendor=0d8c, idProduct=0022, bcdDevice= 0.00 usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 4-1: config 0 descriptor?? cm6533_jd 0003:0D8C:0022.00CE: unknown main item tag 0x0 cm6533_jd 0003:0D8C:0022.00CE: unknown main item tag 0x0 cm6533_jd 0003:0D8C:0022.00CE: No inputs registered, leaving cm6533_jd 0003:0D8C:0022.00CE: hiddev0,hidraw0: USB HID v0.00 Device [HID 0d8c:0022] on usb-dummy_hcd.3-1/input0