WARNING: Support for this device (Terratec Grabster AV400) is experimental.

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit:    9a33b369 usb-fuzzer: main usb gadget fuzzer driver
git tree:       https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=141ca62d200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=23e37f59d94ddd15
dashboard link: https://syzkaller.appspot.com/bug?extid=af8f8d2ac0d39b0ed3a0
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1405bedd200000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13ce3bbb200000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+af8f8d2ac0d39b0ed3a0@xxxxxxxxxxxxxxxxxxxxxxxxx

usb 1-1: New USB device found, idVendor=0ccd, idProduct=0039, bcdDevice=  
d.3c
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
pvrusb2: Hardware description: Terratec Grabster AV400
pvrusb2: **********
pvrusb2: WARNING: Support for this device (Terratec Grabster AV400) is  
experimental.
pvrusb2: Important functionality might not be entirely working.
pvrusb2: Please consider contacting the driver author to help with further  
stabilization of the driver.
pvrusb2: **********


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