linux-kernel - Re: KASAN: slab-out-of-bounds Write in xfrm_attr

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Date:   Sun, 01 Nov 2020 23:23:07 -0800
From:   syzbot <syzbot+c43831072e7df506a646@...kaller.appspotmail.com>
To:     0x7f454c46@...il.com, andriin@...com, ast@...nel.org,
        bpf@...r.kernel.org, daniel@...earbox.net, davem@...emloft.net,
        dima@...sta.com, hdanton@...a.com, herbert@...dor.apana.org.au,
        john.fastabend@...il.com, kafai@...com, kpsingh@...omium.org,
        kuba@...nel.org, linux-kernel@...r.kernel.org, mkubecek@...e.cz,
        netdev@...r.kernel.org, songliubraving@...com,
        steffen.klassert@...unet.com, syzkaller-bugs@...glegroups.com,
        yhs@...com
Subject: Re: KASAN: slab-out-of-bounds Write in xfrm_attr_cpy32

syzbot has bisected this issue to:

commit 5106f4a8acff480e244300bc5097c0ad7048c3a2
Author: Dmitry Safonov <dima@...sta.com>
Date:   Mon Sep 21 14:36:55 2020 +0000

    xfrm/compat: Add 32=>64-bit messages translator

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16cefa8a500000
start commit:   3cea11cd Linux 5.10-rc2
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=15cefa8a500000
console output: https://syzkaller.appspot.com/x/log.txt?x=11cefa8a500000
kernel config:  https://syzkaller.appspot.com/x/.config?x=61033507391c77ff
dashboard link: https://syzkaller.appspot.com/bug?extid=c43831072e7df506a646
userspace arch: i386
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1388676c500000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=158f642c500000

Reported-by: syzbot+c43831072e7df506a646@...kaller.appspotmail.com
Fixes: 5106f4a8acff ("xfrm/compat: Add 32=>64-bit messages translator")

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