linux-kernel - Re: WARNING: refcount bug in l2cap_global_chan_by

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Message-ID: <00000000000035d35105ac23ed6d@google.com>
Date:   Wed, 05 Aug 2020 09:33:07 -0700
From:   syzbot <syzbot+39ad9f042519082fcec9@...kaller.appspotmail.com>
To:     coreteam@...filter.org, davem@...emloft.net, edubezval@...il.com,
        johan.hedberg@...il.com, kaber@...sh.net, kadlec@...ckhole.kfki.hu,
        kuba@...nel.org, linux-bluetooth@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        marcel@...tmann.org, mchehab@...nel.org, mchehab@...pensource.com,
        netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        pablo@...filter.org, syzkaller-bugs@...glegroups.com
Subject: Re: WARNING: refcount bug in l2cap_global_chan_by_psm

syzbot has bisected this issue to:

commit 3c1e300966d7edc380e405b3ab70b6e3c813a121
Author: Mauro Carvalho Chehab <mchehab@...pensource.com>
Date:   Tue Oct 18 19:44:12 2016 +0000

    [media] si4713: don't break long lines

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=108f4002900000
start commit:   c0842fbc random32: move the pseudo-random 32-bit definitio..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=128f4002900000
console output: https://syzkaller.appspot.com/x/log.txt?x=148f4002900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=76cacb0fe58c4a1e
dashboard link: https://syzkaller.appspot.com/bug?extid=39ad9f042519082fcec9
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14491b04900000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1188e392900000

Reported-by: syzbot+39ad9f042519082fcec9@...kaller.appspotmail.com
Fixes: 3c1e300966d7 ("[media] si4713: don't break long lines")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection