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From:   Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Date:   Mon, 2 Jul 2018 10:41:27 +0300
Message-ID: <CAE5jQCfP1ZteOhBD3-inASWtp1i-0NuFhZCSKyEy=wx+eQ=bbw@mail.gmail.com>
Subject: Re: Mounting corrupted HFS+ causes kernel NULL pointer dereference
To:     "Ernesto A. Fernandez" <ernesto.mnd.fernandez@gmail.com>
Cc:     pavel@ucw.cz, linux-kernel@vger.kernel.org,
        linux-fsdevel@vger.kernel.org,
        Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
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Thank you, now (with just this patch applied on top of v4.18-rc2) it
just (asynchronously?) writes `hfsplus: b-tree write err: -5, ino: 3`
to dmesg and does not segfaults.
=D0=BF=D1=82, 29 =D0=B8=D1=8E=D0=BD. 2018 =D0=B3. =D0=B2 21:45, Ernesto A. =
Fern=C3=A1ndez
<ernesto.mnd.fernandez@gmail.com>:
>
> Hi again:
>
> A patch for your original report has already been added to the -mm tree.
>
> On Tue, Jun 12, 2018 at 09:43:26PM +0300, Anatoly Trosinenko wrote:
> > Now, when mounting the attached hfsplus_16mb_segv to /mnt and
> > performing `dd if=3D/dev/zero of=3D/mnt/xyz bs=3D567879 count=3D1` I ge=
t
> >
> > [    1.646451] BUG: unable to handle kernel NULL pointer dereference
> > at 0000000000000043
>
> I just sent you a patch for this second report. It's really simple, so
> it would be great if you could take a look at it and review it yourself.
> Otherwise it's not very likely to get picked up.
>
> Thanks,
> Ernest


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e-mail: anatoly.trosinenko@gmail.com