linux-kernel - Re: Mounting corrupted HFS+ causes kernel NULL pointer dereference

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Message-ID: <20180629184542.jwxhruxgp5xv2abt@eaf>
Date:   Fri, 29 Jun 2018 15:45:43 -0300
From:   Ernesto A. Fernández 
        <ernesto.mnd.fernandez@...il.com>
To:     Anatoly Trosinenko <anatoly.trosinenko@...il.com>
Cc:     pavel@....cz, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org,
        Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>
Subject: Re: Mounting corrupted HFS+ causes kernel NULL pointer dereference

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=/dev/zero of=/mnt/xyz bs=567879 count=1` I get
> 
> [    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