usb 1-1: Using ep0 maxpacket: 8
usb 1-1: config 0 has an invalid interface number: 250 but max is 0
usb 1-1: config 0 has no interface number 0
usb 1-1: New USB device found, idVendor=05a9, idProduct=2640, bcdDevice=5b.bf
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
usb 1-1: string descriptor 0 read error: -71
WARNING: CPU: 1 PID: 21 at kernel/workqueue.c:3030 __flush_work+0x93f/0xa80 kernel/workqueue.c:3030
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.2.0-rc1+ #10
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
 panic+0x292/0x6c9 kernel/panic.c:218
 __warn.cold+0x20/0x4b kernel/panic.c:575
 report_bug+0x262/0x2a0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986
RIP: 0010:__flush_work+0x93f/0xa80 kernel/workqueue.c:3030
Code: e8 56 45 23 00 48 c7 c2 89 86 19 81 be 01 00 00 00 45 31 e4 48 c7 c7 20 82 ef 86 e8 6b 4d 0b 00 e9 d9 fb ff ff e8 31 45 23 00 <0f> 0b 45 31 e4 e9 ca fb ff ff e8 22 45 23 00 e8 9d 07 12 00 31 ff
RSP: 0018:ffff8881d9efed98 EFLAGS: 00010293
RAX: ffff8881d9e36000 RBX: ffff8881cfcb05b0 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff811986bf RDI: 0000000000000001
RBP: ffff8881d9efef00 R08: ffff8881d9e36000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000293 R15: ffff8881cfcb05c8
 __cancel_work_timer+0x312/0x440 kernel/workqueue.c:3126
 uvc_ctrl_cleanup_device+0x22/0x483 drivers/media/usb/uvc/uvc_ctrl.c:2353
 uvc_delete+0x29/0x2f0 drivers/media/usb/uvc/uvc_driver.c:1871
 kref_put include/linux/kref.h:67 [inline]
 uvc_probe+0xf95/0x64e4 drivers/media/usb/uvc/uvc_driver.c:2228
 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
 really_probe+0x281/0x660 drivers/base/dd.c:509
 driver_probe_device+0x104/0x210 drivers/base/dd.c:670
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777
 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
 __device_attach+0x217/0x360 drivers/base/dd.c:843
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
 device_add+0xae6/0x16f0 drivers/base/core.c:2111
 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+0x281/0x660 drivers/base/dd.c:509
 driver_probe_device+0x104/0x210 drivers/base/dd.c:670
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777
 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
 __device_attach+0x217/0x360 drivers/base/dd.c:843
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
 device_add+0xae6/0x16f0 drivers/base/core.c:2111
 usb_new_device.cold+0x8c1/0x1016 drivers/usb/core/hub.c:2534
 hub_port_connect drivers/usb/core/hub.c:5089 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
 port_event drivers/usb/core/hub.c:5350 [inline]
 hub_event+0x1ada/0x3590 drivers/usb/core/hub.c:5432
 process_one_work+0x905/0x1570 kernel/workqueue.c:2268
 worker_thread+0x96/0xe20 kernel/workqueue.c:2414
 kthread+0x30b/0x410 kernel/kthread.c:254
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..