linux-kernel - Re: [syzbot] general protection fault in legacy_parse

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Date:   Fri, 27 Aug 2021 19:11:18 -0700
From:   syzbot <syzbot+d1e3b1d92d25abf97943@...kaller.appspotmail.com>
To:     andriin@...com, ast@...nel.org, bpf@...r.kernel.org,
        casey@...aufler-ca.com, christian.brauner@...ntu.com,
        daniel@...earbox.net, dhowells@...hat.com, dvyukov@...gle.com,
        jmorris@...ei.org, kafai@...com, kpsingh@...gle.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org, netdev@...r.kernel.org,
        paul@...l-moore.com, selinux@...r.kernel.org,
        songliubraving@...com, stephen.smalley.work@...il.com,
        syzkaller-bugs@...glegroups.com, tonymarislogistics@...dex.com,
        viro@...iv.linux.org.uk, yhs@...com
Subject: Re: [syzbot] general protection fault in legacy_parse_param

syzbot has bisected this issue to:

commit 54261af473be4c5481f6196064445d2945f2bdab
Author: KP Singh <kpsingh@...gle.com>
Date:   Thu Apr 30 15:52:40 2020 +0000

    security: Fix the default value of fs_context_parse_param hook

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=160c5d75300000
start commit:   77dd11439b86 Merge tag 'drm-fixes-2021-08-27' of git://ano..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=150c5d75300000
console output: https://syzkaller.appspot.com/x/log.txt?x=110c5d75300000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2fd902af77ff1e56
dashboard link: https://syzkaller.appspot.com/bug?extid=d1e3b1d92d25abf97943
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=126d084d300000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16216eb1300000

Reported-by: syzbot+d1e3b1d92d25abf97943@...kaller.appspotmail.com
Fixes: 54261af473be ("security: Fix the default value of fs_context_parse_param hook")

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