linux-kernel - WARNING: Detected a wedged cx25840 chip; the device will not work.

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Message-ID: <00000000000048aa750587c052ef@google.com>
Date:   Tue, 30 Apr 2019 07:36:07 -0700
From:   syzbot <syzbot+170a86bf206dd2c6217e@...kaller.appspotmail.com>
To:     andreyknvl@...gle.com, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: WARNING: Detected a wedged cx25840 chip; the device will not work.

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@...kaller.appspotmail.com

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

---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.

syzbot will keep track of this bug report. See:
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syzbot can test patches for this bug, for details see:
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