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From:   Aleksandr Nogikh <nogikh@google.com>
Date:   Mon, 15 May 2023 11:05:10 +0200
Message-ID: <CANp29Y6G_1hKheTLG9NeSWv4+GYK=zOsUuu_sKCWqEBwGeOYig@mail.gmail.com>
Subject: Re: [syzbot] [xfs?] KASAN: use-after-free Read in xfs_btree_lookup_get_block
To:     syzbot <syzbot+7e9494b8b399902e994e@syzkaller.appspotmail.com>
Cc:     david@fromorbit.com, dchinner@redhat.com, djwong@kernel.org,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-xfs@vger.kernel.org, syzkaller-bugs@googlegroups.com
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On Sat, May 13, 2023 at 7:29=E2=80=AFPM syzbot
<syzbot+7e9494b8b399902e994e@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 22ed903eee23a5b174e240f1cdfa9acf393a5210
> Author: Darrick J. Wong <djwong@kernel.org>
> Date:   Wed Apr 12 05:49:23 2023 +0000
>
>     xfs: verify buffer contents when we skip log replay
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=3D12710f7a28=
0000
> start commit:   1b929c02afd3 Linux 6.2-rc1
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=3D68e0be42c8ee4=
bb4
> dashboard link: https://syzkaller.appspot.com/bug?extid=3D7e9494b8b399902=
e994e
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=3D172ff2e4480=
000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=3D11715ea848000=
0
>
> If the result looks correct, please mark the issue as fixed by replying w=
ith:
>
> #syz fix: xfs: verify buffer contents when we skip log replay

#syz fix: xfs: verify buffer contents when we skip log replay

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