linux-kernel - Re: [patch] afs: potential null dereference

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Date:	Mon, 22 Mar 2010 12:05:20 +0000
From:	David Howells <dhowells@...hat.com>
To:	Dan Carpenter <error27@...il.com>
Cc:	dhowells@...hat.com, kernel-janitors@...r.kernel.org,
	linux-afs@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [patch] afs: potential null dereference

Dan Carpenter <error27@...il.com> wrote:

> It seems clear from the surrounding code that xpermits is allowed to be 
> NULL here.

Interesting.  The memcpy() won't oops due to this because if it is given a
NULL pointer, it will also be given a zero count.  I wonder if this means the
if-statement your patch adds is actually unnecessary...

David
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