linux-kernel - Re: [PATCH v6 4/4] net: moxa: continue loop on skb allocation failure

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Message-Id: <20140825.172615.1598002278628891621.davem@davemloft.net>
Date:	Mon, 25 Aug 2014 17:26:15 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jonas.jensen@...il.com
Cc:	netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, f.fainelli@...il.com,
	eric.dumazet@...il.com, mirqus@...il.com
Subject: Re: [PATCH v6 4/4] net: moxa: continue loop on skb allocation
 failure

From: Jonas Jensen <jonas.jensen@...il.com>
Date: Mon, 25 Aug 2014 16:22:40 +0200

> If netdev_alloc_skb_ip_align() fails, subsequent code will
> try to dereference an invalid pointer.
> 
> Continue to next descriptor on error.
> 
> While we're at it,
> 
> 1. eliminate the chance of an endless loop, replace the main
>    loop with while(rx < budget)
> 
> 2. use napi_complete() and remove the explicit napi_gro_flush()
> 
> Signed-off-by: Jonas Jensen <jonas.jensen@...il.com>

Applied.
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