linux-kernel - Re: KASAN: use-after-free Read in generic_gcmaes

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Date:   Thu, 28 Mar 2019 10:08:00 -0700
From:   syzbot <syzbot+6d3612ba5e254e387153@...kaller.appspotmail.com>
To:     ard.biesheuvel@...aro.org, aviadye@...lanox.com,
        borisp@...lanox.com, bp@...en8.de, davejwatson@...com,
        davem@...emloft.net, herbert@...dor.apana.org.au, hpa@...or.com,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        mingo@...hat.com, netdev@...r.kernel.org,
        steffen.klassert@...unet.com, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de, vakul.garg@....com, x86@...nel.org
Subject: Re: KASAN: use-after-free Read in generic_gcmaes_encrypt

syzbot has bisected this bug to:

commit a42055e8d2c30d4decfc13ce943d09c7b9dad221
Author: Vakul Garg <vakul.garg@....com>
Date:   Fri Sep 21 04:16:13 2018 +0000

     net/tls: Add support for async encryption of records for performance

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15e6797d200000
start commit:   5694cecd Merge tag 'arm64-upstream' of git://git.kernel.or..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=17e6797d200000
console output: https://syzkaller.appspot.com/x/log.txt?x=13e6797d200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=91a256823ef17263
dashboard link: https://syzkaller.appspot.com/bug?extid=6d3612ba5e254e387153
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=110db3c7400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=113fa5ed400000

Reported-by: syzbot+6d3612ba5e254e387153@...kaller.appspotmail.com
Fixes: a42055e8d2c3 ("net/tls: Add support for async encryption of records  
for performance")

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