linux-kernel - Re: KASAN: use-after-free Write in __sco_sock

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Date:   Sun, 02 Aug 2020 17:49:04 -0700
From:   syzbot <syzbot+077eca30d3cb7c02b273@...kaller.appspotmail.com>
To:     coreteam@...filter.org, davem@...emloft.net,
        devel@...verdev.osuosl.org, gregkh@...uxfoundation.org,
        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: KASAN: use-after-free Write in __sco_sock_close

syzbot has bisected this issue to:

commit 43ea43b9d8b27b7acd443ec59319faa3cdb8a616
Author: Mauro Carvalho Chehab <mchehab@...pensource.com>
Date:   Wed Oct 12 11:21:43 2016 +0000

    [media] radio-bcm2048: don't ignore errors

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1036e6a4900000
start commit:   ac3a0c84 Merge git://git.kernel.org/pub/scm/linux/kernel/g..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1236e6a4900000
console output: https://syzkaller.appspot.com/x/log.txt?x=1436e6a4900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e59ee776d5aa8d55
dashboard link: https://syzkaller.appspot.com/bug?extid=077eca30d3cb7c02b273
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12cf1904900000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10d52e14900000

Reported-by: syzbot+077eca30d3cb7c02b273@...kaller.appspotmail.com
Fixes: 43ea43b9d8b2 ("[media] radio-bcm2048: don't ignore errors")

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