linux-kernel - Re: [PATCH v2] Broadcom CNIC core network driver: fix mem leak on allocation failures in cnic_alloc_uio

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Message-ID: <alpine.LNX.2.00.1101021952400.11481@swampdragon.chaosbits.net>
Date:	Sun, 2 Jan 2011 19:54:31 +0100 (CET)
From:	Jesper Juhl <jj@...osbits.net>
To:	David Miller <davem@...emloft.net>
cc:	joe@...ches.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, zongxi@...adcom.com,
	mchan@...adcom.com
Subject: Re: [PATCH v2] Broadcom CNIC core network driver: fix mem leak on
 allocation failures in cnic_alloc_uio_rings() 

On Fri, 31 Dec 2010, David Miller wrote:

> From: Jesper Juhl <jj@...osbits.net>
> Date: Sun, 26 Dec 2010 21:57:39 +0100 (CET)
> 
> > We are leaking memory in drivers/net/cnic.c::cnic_alloc_uio_rings() if 
> > either of the calls to dma_alloc_coherent() fail. This patch fixes it by 
> > freeing both the memory allocated with kzalloc() and memory allocated with 
> > previous calls to dma_alloc_coherent() when there's a failure.
> > 
> > Thanks to  Joe Perches <joe@...ches.com>  for suggesting a better 
> > implementation than my initial version.
> > 
> > 
> > Signed-off-by: Jesper Juhl <jj@...osbits.net>
> 
>  ...
> > + err_dma:
> > +	dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
> > +       			  udev->l2_ring, udev->l2_ring_map);
> 
> Space before tab in indentation, improperly positioned third argument
> indentation.
> 
Whoops.

> I fixed all of this up, but please do not skimp on making sure these
> details are taken care of when updating your patch in response to feedback.
> 
I usually try to take care that such things are in order. I often even 
point these details out to other people. It slipped past me this time. 
That was a mistake. Sorry.


-- 
Jesper Juhl <jj@...osbits.net>            http://www.chaosbits.net/
Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
Plain text mails only, please.

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