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

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Date:   Thu, 21 Mar 2019 02:33:00 -0700
From:   syzbot <syzbot+e736399a2c4054612307@...kaller.appspotmail.com>
To:     Jason@...c4.com, ard.biesheuvel@...aro.org, aviadye@...lanox.com,
        borisp@...lanox.com, daniel@...earbox.net, davejwatson@...com,
        davem@...emloft.net, dhowells@...hat.com, ebiggers3@...il.com,
        herbert@...dor.apana.org.au, jason@...c4.com,
        john.fastabend@...il.com, k.marinushkin@...il.com,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, security@...nel.org,
        steffen.klassert@...unet.com, syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Read in crypto_gcm_init_common

syzbot has bisected this bug to:

commit 428490e38b2e352812e0b765d8bceafab0ec441d
Author: Jason A. Donenfeld <Jason@...c4.com>
Date:   Wed Sep 20 14:58:39 2017 +0000

     security/keys: rewrite all of big_key crypto

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=160eabcf200000
start commit:   428490e3 security/keys: rewrite all of big_key crypto
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=150eabcf200000
console output: https://syzkaller.appspot.com/x/log.txt?x=110eabcf200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9384ecb1c973baed
dashboard link: https://syzkaller.appspot.com/bug?extid=e736399a2c4054612307
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17902f5b400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=111377e5400000

Reported-by: syzbot+e736399a2c4054612307@...kaller.appspotmail.com
Fixes: 428490e38b2e ("security/keys: rewrite all of big_key crypto")