netdev - Re: [PATCH][net-next v2] gianfar: Fix alloc_skb

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Date:	Fri, 09 Nov 2012 17:08:12 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	claudiu.manoil@...escale.com
Cc:	netdev@...r.kernel.org, paul.gortmaker@...driver.com
Subject: Re: [PATCH][net-next v2] gianfar: Fix alloc_skb_resources on
 -ENOMEM cleanup path

From: Claudiu Manoil <claudiu.manoil@...escale.com>
Date: Fri, 9 Nov 2012 10:11:41 +0200

> Should gfar_init_bds() return with -ENOMEM inside gfar_alloc_skb_resources(),
> free_skb_resources() will be called twice in a row on the "cleanup" path,
> leading to duplicate kfree() calls for rx_|tx_queue->rx_|tx_skbuff resulting
> in segmentation fault.
> This patch prevents the segmentation fault to happen in the future
> (rx_|tx_sbkbuff set to NULL), and corrects the error path handling
> for gfar_init_bds().
> 
> Cc: Paul Gortmaker <paul.gortmaker@...driver.com>
> 
> Signed-off-by: Claudiu Manoil <claudiu.manoil@...escale.com>

Applied.
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