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Message-ID: <000000000000fdd90c058f00daca@google.com>
Date:   Wed, 31 Jul 2019 14:32:00 -0700
From:   syzbot <syzbot+701728447042217b67c1@...kaller.appspotmail.com>
To:     davem@...emloft.net, dvyukov@...gle.com,
        linux-hams@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, ralf@...ux-mips.org,
        syzkaller-bugs@...glegroups.com, xiyou.wangcong@...il.com
Subject: Re: KASAN: use-after-free Read in nr_rx_frame (2)

syzbot has bisected this bug to:

commit c8c8218ec5af5d2598381883acbefbf604e56b5e
Author: Cong Wang <xiyou.wangcong@...il.com>
Date:   Thu Jun 27 21:30:58 2019 +0000

     netrom: fix a memory leak in nr_rx_frame()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=122ddaec600000
start commit:   629f8205 Merge tag 'for-linus-20190730' of git://git.kerne..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=112ddaec600000
console output: https://syzkaller.appspot.com/x/log.txt?x=162ddaec600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e397351d2615e10
dashboard link: https://syzkaller.appspot.com/bug?extid=701728447042217b67c1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14a6e008600000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11937d92600000

Reported-by: syzbot+701728447042217b67c1@...kaller.appspotmail.com
Fixes: c8c8218ec5af ("netrom: fix a memory leak in nr_rx_frame()")

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

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