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