usb 1-1: New USB device found, idVendor=0bd3, idProduct=0555, bcdDevice=69.6a usb 1-1: New USB device strings: Mfr=64, Product=0, SerialNumber=0 usb 1-1: Manufacturer: syz usb 1-1: config 0 descriptor?? usb 1-1: Found UVC 0.00 device (0bd3:0555) uvcvideo 1-1:0.0: Entity type for entity ࠊ was not initialized! ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9608 at drivers/media/mc/mc-entity.c:666 media_create_pad_link+0x4de/0x650 drivers/media/mc/mc-entity.c:666 Modules linked in: CPU: 1 PID: 9608 Comm: kworker/1:4 Not tainted 5.12.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:media_create_pad_link+0x4de/0x650 drivers/media/mc/mc-entity.c:666 Code: 98 56 b6 fb 44 89 e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 81 56 b6 fb 0f 0b 41 bc ea ff ff ff eb da e8 72 56 b6 fb <0f> 0b 41 bc ea ff ff ff eb cb e8 63 56 b6 fb 0f 0b 41 bc ea ff ff RSP: 0018:ffffc90016c9ef68 EFLAGS: 00010212 RAX: 0000000000037f17 RBX: ffff888024a21880 RCX: ffffc90016721000 RDX: 0000000000040000 RSI: ffffffff85bd9b0e RDI: 0000000000000003 RBP: ffff88801242d080 R08: 0000000000000003 R09: 0000000000000000 R10: ffffffff85bd96a5 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88801242d080 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055dbf0ede160 CR3: 0000000012551000 CR4: 0000000000350ee0 Call Trace: uvc_mc_create_links drivers/media/usb/uvc/uvc_entity.c:50 [inline] uvc_mc_register_entities+0x5cd/0x910 drivers/media/usb/uvc/uvc_entity.c:151 uvc_register_chains drivers/media/usb/uvc/uvc_driver.c:2298 [inline] uvc_probe.cold+0x1f8e/0x33ad drivers/media/usb/uvc/uvc_driver.c:2435 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 really_probe+0x291/0xe60 drivers/base/dd.c:559 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:745 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:851 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:919 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbdb/0x1db0 drivers/base/core.c:3242 usb_set_configuration+0x113f/0x1910 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 really_probe+0x291/0xe60 drivers/base/dd.c:559 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:745 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:851 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:919 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbdb/0x1db0 drivers/base/core.c:3242 usb_new_device.cold+0x721/0x1058 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x2357/0x4320 drivers/usb/core/hub.c:5591 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294