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From:   Aleksandr Nogikh <nogikh@google.com>
Date:   Wed, 2 Aug 2023 16:26:54 +0200
Message-ID: <CANp29Y4RFKPWBv+=ExNtud=CR2sAPR29H-KxV7R+HSiwjh3GvA@mail.gmail.com>
Subject: Re: [syzbot] [f2fs?] general protection fault in f2fs_drop_extent_tree
To:     syzbot <syzbot+f4649be1be739e030111@syzkaller.appspotmail.com>
Cc:     chao@kernel.org, jaegeuk@kernel.org,
        linux-f2fs-devel@lists.sourceforge.net,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        syzkaller-bugs@googlegroups.com
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On Wed, Aug 2, 2023 at 2:41=E2=80=AFAM syzbot
<syzbot+f4649be1be739e030111@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 458c15dfbce62c35fefd9ca637b20a051309c9f1
> Author: Chao Yu <chao@kernel.org>
> Date:   Tue May 23 03:58:22 2023 +0000
>
>     f2fs: don't reset unchangable mount option in f2fs_remount()
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=3D12461d31a8=
0000
> start commit:   a92b7d26c743 Merge tag 'drm-fixes-2023-06-23' of git://an=
o..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=3D2cbd298d0aff1=
140
> dashboard link: https://syzkaller.appspot.com/bug?extid=3Df4649be1be739e0=
30111
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=3D1564afb0a80=
000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=3D166928c728000=
0
>
> If the result looks correct, please mark the issue as fixed by replying w=
ith:
>
> #syz fix: f2fs: don't reset unchangable mount option in f2fs_remount()

Looks reasonable.
#syz fix: f2fs: don't reset unchangable mount option in f2fs_remount()

>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisect=
ion
>