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From:   Dmitry Vyukov <dvyukov@google.com>
Date:   Wed, 14 Jun 2023 10:50:03 +0200
Message-ID: <CACT4Y+ZGEucU4yhooRGDia5jxjEb7BhSVh9y9s8UfRzrZapusA@mail.gmail.com>
Subject: Re: [syzbot] [gfs2?] general protection fault in gfs2_evict_inode (2)
To:     syzbot <syzbot+8a5fc6416c175cecea34@syzkaller.appspotmail.com>
Cc:     agruenba@redhat.com, cluster-devel@redhat.com,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        rpeterso@redhat.com, syzkaller-bugs@googlegroups.com
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On Mon, 12 Jun 2023 at 23:05, syzbot
<syzbot+8a5fc6416c175cecea34@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 504a10d9e46bc37b23d0a1ae2f28973c8516e636
> Author: Bob Peterson <rpeterso@redhat.com>
> Date:   Fri Apr 28 16:07:46 2023 +0000
>
>     gfs2: Don't deref jdesc in evict
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1544372d280000
> start commit:   7df047b3f0aa Merge tag 'vfio-v6.4-rc1' of https://github.c..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=474780ac1e194316
> dashboard link: https://syzkaller.appspot.com/bug?extid=8a5fc6416c175cecea34
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1294d2d2280000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=104a7508280000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: gfs2: Don't deref jdesc in evict

Looks reasonable:

#syz fix: gfs2: Don't deref jdesc in evict