linux-kernel - Re: [PATCH 3/7] mm/slub.c: remove invalid reference to list iterator variable

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Message-ID: <alpine.DEB.2.00.1207090853010.27519@router.home>
Date:	Mon, 9 Jul 2012 08:53:13 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Julia Lawall <Julia.Lawall@...6.fr>
cc:	kernel-janitors@...r.kernel.org, Pekka Enberg <penberg@...nel.org>,
	Matt Mackall <mpm@...enic.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/7] mm/slub.c: remove invalid reference to list iterator
 variable

On Sun, 8 Jul 2012, Julia Lawall wrote:

> From: Julia Lawall <Julia.Lawall@...6.fr>
>
> If list_for_each_entry, etc complete a traversal of the list, the iterator
> variable ends up pointing to an address at an offset from the list head,
> and not a meaningful structure.  Thus this value should not be used after
> the end of the iterator.  The patch replaces s->name by al->name, which is
> referenced nearby.

Acked-by: Christoph Lameter <cl@...ux.com>
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