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=12df67c3200000
kernel config: https://syzkaller.appspot.com/x/.config?x=23e37f59d94ddd15
dashboard link: https://syzkaller.appspot.com/bug?extid=170a86bf206dd2c6217e
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=108a28f3200000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=145d8a2d200000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+170a86bf206dd2c6217e@xxxxxxxxxxxxxxxxxxxxxxxxx
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
pvrusb2: Hardware description: Gotview USB 2.0 DVD 2
pvrusb2: Invalid write control endpoint
usb 1-1: USB disconnect, device number 2
pvrusb2: Invalid write control endpoint
pvrusb2: WARNING: Detected a wedged cx25840 chip; the device will not work.
pvrusb2: WARNING: Try power cycling the pvrusb2 device.
pvrusb2: WARNING: Disabling further access to the device to prevent other
foul-ups.
pvrusb2: Device being rendered inoperable
cx25840 0-0044: Unable to detect h/w, assuming cx23887
cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a)
pvrusb2: Attached sub-driver cx25840
pvrusb2: Attempted to execute control transfer when device not ok
pvrusb2: Attempted to execute control transfer when device not ok
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