On Tue, Apr 30, 2019 at 05:35:16PM +0200, Greg KH wrote: > On Tue, Apr 30, 2019 at 07:36:07AM -0700, syzbot wrote: > > 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 > > As the driver said, power cycle your device, it crashed :) > > Seriously, I think your script detection failed here, sorry. Ah, same issue as the other "WARNING" message, sorry for the noise.
