syzbot

usb 5-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config
usb 5-1: New USB device found, idVendor=0bd3, idProduct=0555, bcdDevice=69.6a
usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 5-1: config 0 descriptor??
usb 5-1: string descriptor 0 read error: -71
usb 5-1: Found UVC 0.00 device <unnamed> (0bd3:0555)
uvcvideo 5-1:0.0: Entity type for entity Output 255 was not initialized!
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WARNING: CPU: 1 PID: 4582 at drivers/media/mc/mc-entity.c:1092 media_create_pad_link+0x500/0x650 drivers/media/mc/mc-entity.c:1092
Modules linked in:
CPU: 1 PID: 4582 Comm: kworker/1:2 Not tainted 6.4.0-rc4-syzkaller-00051-g48b1320a674e #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: usb_hub_wq hub_event
RIP: 0010:media_create_pad_link+0x500/0x650 drivers/media/mc/mc-entity.c:1092
Code: bc ea ff ff ff eb da e8 0e 7c d6 fa 0f 0b 41 bc ea ff ff ff eb cb e8 ff 7b d6 fa 0f 0b 41 bc ea ff ff ff eb bc e8 f0 7b d6 fa <0f> 0b 41 bc ea ff ff ff eb ad e8 e1 7b d6 fa 0f 0b 41 bc ea ff ff
RSP: 0018:ffffc900016e6ef8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888023c4d080 RCX: 0000000000000000
RDX: ffff888023ef8a80 RSI: ffffffff86ace950 RDI: 0000000000000007
RBP: ffff8880254cf880 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88806b700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe6a8ecff8 CR3: 000000000c571000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 uvc_mc_create_links drivers/media/usb/uvc/uvc_entity.c:50 [inline]
 uvc_mc_register_entities+0x629/0xaa0 drivers/media/usb/uvc/uvc_entity.c:151
 uvc_register_chains drivers/media/usb/uvc/uvc_driver.c:2047 [inline]
 uvc_probe+0x2616/0x80a0 drivers/media/usb/uvc/uvc_driver.c:2184
 usb_probe_interface+0x30f/0x960 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x240/0xca0 drivers/base/dd.c:658
 __driver_probe_device+0x1df/0x4b0 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830
 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:958
 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457
 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
 device_add+0x112d/0x1a40 drivers/base/core.c:3625
 usb_set_configuration+0x1196/0x1bc0 drivers/usb/core/message.c:2211
 usb_generic_driver_probe+0xcf/0x130 drivers/usb/core/generic.c:238
 usb_probe_device+0xd8/0x2c0 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x240/0xca0 drivers/base/dd.c:658
 __driver_probe_device+0x1df/0x4b0 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830
 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:958
 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457
 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
 device_add+0x112d/0x1a40 drivers/base/core.c:3625
 usb_new_device+0xcb2/0x19d0 drivers/usb/core/hub.c:2575
 hub_port_connect drivers/usb/core/hub.c:5407 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
 port_event drivers/usb/core/hub.c:5711 [inline]
 hub_event+0x2d9e/0x4e40 drivers/usb/core/hub.c:5793
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>