linux-kernel - Re: general protection fault in jffs2_parse

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Message-ID: <0000000000001b4eeb05b91ae518@google.com>
Date:   Sun, 17 Jan 2021 08:14:07 -0800
From:   syzbot <syzbot+9765367bb86a19d38732@...kaller.appspotmail.com>
To:     anmol.karan123@...il.com, dhowells@...hat.com, dwmw2@...radead.org,
        jamie@...iainc.com, linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
        lizhe67@...wei.com, richard@....at, sandeen@...deen.net,
        syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: Re: general protection fault in jffs2_parse_param

syzbot suspects this issue was fixed by commit:

commit a61df3c413e49b0042f9caf774c58512d1cc71b7
Author: Jamie Iles <jamie@...iainc.com>
Date:   Mon Oct 12 13:12:04 2020 +0000

    jffs2: Fix NULL pointer dereference in rp_size fs option parsing

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15cb91e7500000
start commit:   bf3e7628 Merge branch 'mtd/fixes' of git://git.kernel.org/..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=61033507391c77ff
dashboard link: https://syzkaller.appspot.com/bug?extid=9765367bb86a19d38732
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13d81f32500000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13516852500000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: jffs2: Fix NULL pointer dereference in rp_size fs option parsing

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