linux-kernel - Re: [PATCH 1/7] drivers/isdn/mISDN/stack.c: remove invalid reference to list iterator variable

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Message-Id: <20120709.152449.1208146051989927045.davem@davemloft.net>
Date:	Mon, 09 Jul 2012 15:24:49 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	Julia.Lawall@...6.fr
Cc:	isdn@...ux-pingi.de, kernel-janitors@...r.kernel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/7] drivers/isdn/mISDN/stack.c: remove invalid
 reference to list iterator variable

From: Julia Lawall <Julia.Lawall@...6.fr>
Date: Sun,  8 Jul 2012 13:37:38 +0200

> 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 dereferences are just deleted from the
> debugging statement.
> 
> This problem was found using Coccinelle (http://coccinelle.lip6.fr/).
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

Applied.
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