netdev - Re: KASAN: use-after-free Read in __lock

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Date:   Wed, 10 Apr 2019 04:33:00 -0700
From:   syzbot <syzbot+9276d76e83e3bcde6c99@...kaller.appspotmail.com>
To:     davem@...emloft.net, dvyukov@...gle.com, glider@...gle.com,
        linux-kernel@...r.kernel.org, linux-sctp@...r.kernel.org,
        lucien.xin@...il.com, marcelo.leitner@...il.com,
        netdev@...r.kernel.org, nhorman@...driver.com,
        syzkaller-bugs@...glegroups.com, vyasevich@...il.com
Subject: Re: KASAN: use-after-free Read in __lock_sock

syzbot has bisected this bug to:

commit 8f840e47f190cbe61a96945c13e9551048d42cef
Author: Xin Long <lucien.xin@...il.com>
Date:   Thu Apr 14 07:35:33 2016 +0000

     sctp: add the sctp_diag.c file

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1719585b200000
start commit:   0072a0c1 Merge tag 'media/v4.20-4' of git://git.kernel.org..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=1499585b200000
console output: https://syzkaller.appspot.com/x/log.txt?x=1099585b200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b9cc5a440391cbfd
dashboard link: https://syzkaller.appspot.com/bug?extid=9276d76e83e3bcde6c99
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12b80cfb400000

Reported-by: syzbot+9276d76e83e3bcde6c99@...kaller.appspotmail.com
Fixes: 8f840e47f190 ("sctp: add the sctp_diag.c file")

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