linux-kernel - Re: [PATCH] ocfs2: Fix NULL pointer dereferrence in __ocfs2_change_file

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Message-ID: <CALjC5hbVph_XvRPNFdz-7DNGwMBnSnbh1eznMAUcYOCbXjNrNw@mail.gmail.com>
Date:	Wed, 20 Jun 2012 21:39:38 -0700
From:	Bret Towe <magnade@...il.com>
To:	Luis Henriques <luis.henriques@...onical.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, ocfs2-devel@....oracle.com,
	mfasheh@...e.com, jlbec@...lplan.org, sunil.mushran@...cle.com
Subject: Re: [PATCH] ocfs2: Fix NULL pointer dereferrence in __ocfs2_change_file_space

On Wed, Jun 20, 2012 at 3:34 PM, Luis Henriques
<luis.henriques@...onical.com> wrote:
> As ocfs2_fallocate() will invoke __ocfs2_change_file_space() with a NULL
> as the first parameter (file), it may trigger a NULL pointer dereferrence
> due to a missing check.  See http://bugs.launchpad.net/bugs/1006012.
>
> Signed-off-by: Luis Henriques <luis.henriques@...onical.com>

ran the patch for a while no crashes I see if the other patch isn't used
i did notice the following in dmesg  not sure exactly what i was up to
at that point tho
never seen the message before

[ 4704.352332] (pool,1731,0):ocfs2_unlink:951 ERROR: status = -39
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