netdev - Re: [PATCH] net: xgene: fix possible NULL dereference in xgene_enet_free_desc

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Message-Id: <20140822.112541.279712306018396613.davem@davemloft.net>
Date:	Fri, 22 Aug 2014 11:25:41 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	isubramanian@....com
Cc:	netdev@...r.kernel.org, dan.carpenter@...cle.com
Subject: Re: [PATCH] net: xgene: fix possible NULL dereference in
 xgene_enet_free_desc_rings()

From: Iyappan Subramanian <isubramanian@....com>
Date: Thu, 21 Aug 2014 13:44:48 -0700

> A NULL pointer dereference is possible for the argument ring->buf_pool
> which is passed to xgene_enet_free_desc_ring(), as ring could be NULL.
> 
> And now since NULL pointers are being checked for before the calls to
> xgene_enet_free_desc_ring(), might as well take advantage of them and
> not call the function if the argument would be NULL.
> 
> Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
> Signed-off-by: Iyappan Subramanian <isubramanian@....com>

Applied, thanks.
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