linux-kernel - Re: [syzbot] [gfs2?] kernel BUG in gfs2_quota

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Message-ID: <0000000000004ae32c060b8da1dc@google.com>
Date:   Sat, 02 Dec 2023 13:33:04 -0800
From:   syzbot <syzbot+3b6e67ac2b646da57862@...kaller.appspotmail.com>
To:     agruenba@...hat.com, eadavis@...com, gfs2@...ts.linux.dev,
        juntong.deng@...look.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, rpeterso@...hat.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [gfs2?] kernel BUG in gfs2_quota_cleanup

syzbot has bisected this issue to:

commit bdcb8aa434c6d36b5c215d02a9ef07551be25a37
Author: Juntong Deng <juntong.deng@...look.com>
Date:   Sun Oct 29 21:10:06 2023 +0000

    gfs2: Fix slab-use-after-free in gfs2_qd_dealloc

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=169c7b52e80000
start commit:   994d5c58e50e Merge tag 'hardening-v6.7-rc4' of git://git.k..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=159c7b52e80000
console output: https://syzkaller.appspot.com/x/log.txt?x=119c7b52e80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c2c74446ab4f0028
dashboard link: https://syzkaller.appspot.com/bug?extid=3b6e67ac2b646da57862
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1268c086e80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=164b3faae80000

Reported-by: syzbot+3b6e67ac2b646da57862@...kaller.appspotmail.com
Fixes: bdcb8aa434c6 ("gfs2: Fix slab-use-after-free in gfs2_qd_dealloc")

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