usb 5-1: New USB device found, idVendor=0bd3, idProduct=0d55, bcdDevice=69.6a usb 5-1: New USB device strings: Mfr=64, Product=0, SerialNumber=0 usb 5-1: Manufacturer: syz usb 5-1: config 0 descriptor?? usb 5-1: Found UVC 0.00 device (0bd3:0d55) uvcvideo 5-1:0.0: Entity type for entity Output 255 was not initialized! ------------[ cut here ]------------ WARNING: CPU: 3 PID: 815 at drivers/media/mc/mc-entity.c:1138 media_create_pad_link+0x5c1/0x760 drivers/media/mc/mc-entity.c:1138 Modules linked in: CPU: 3 PID: 815 Comm: kworker/3:2 Not tainted 6.9.0-rc5-syzkaller-00238-ge6ebf0117218 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Workqueue: usb_hub_wq hub_event RIP: 0010:media_create_pad_link+0x5c1/0x760 drivers/media/mc/mc-entity.c:1138 Code: d8 48 83 c4 28 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc e8 90 64 4e fa 90 0f 0b 90 bb ea ff ff ff eb d6 e8 80 64 4e fa 90 <0f> 0b 90 eb ee e8 75 64 4e fa 90 0f 0b 90 eb e3 e8 6a 64 4e fa 90 RSP: 0018:ffffc90004ba6f88 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88802ccbe880 RCX: ffffffff873f58b0 RDX: ffff88801fab8000 RSI: ffffffff873f5dd0 RDI: 0000000000000002 RBP: ffff8880276dc080 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff934b2758 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806b500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bbe2574048 CR3: 000000000d57a000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: uvc_mc_create_links drivers/media/usb/uvc/uvc_entity.c:50 [inline] uvc_mc_register_entities+0x3a8/0xaa0 drivers/media/usb/uvc/uvc_entity.c:151 uvc_register_chains drivers/media/usb/uvc/uvc_driver.c:2072 [inline] uvc_probe+0x281d/0x47e0 drivers/media/usb/uvc/uvc_driver.c:2209 usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:656 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:828 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:956 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1028 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x1188/0x1ab0 drivers/base/core.c:3720 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:656 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:828 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:956 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1028 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x1188/0x1ab0 drivers/base/core.c:3720 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2652 hub_port_connect drivers/usb/core/hub.c:5521 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x2db0/0x4e20 drivers/usb/core/hub.c:5903 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416 kthread+0x2c1/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244