netdev - Re: [PATCH] ppp: fix BUG on non-linear SKB (multilink receive)

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Date:	Fri, 13 Nov 2009 19:46:50 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	ben@...servers.co.uk
Cc:	paulus@...ba.org, netdev@...r.kernel.org, linux-ppp@...r.kernel.org
Subject: Re: [PATCH] ppp: fix BUG on non-linear SKB (multilink receive)

From: Ben McKeegan <ben@...servers.co.uk>
Date: Thu, 12 Nov 2009 13:09:57 +0000 (GMT)

> @@ -1944,7 +1944,13 @@ ppp_receive_mp_frame(struct ppp *ppp, st
> 
>  	/* Pull completed packets off the queue and receive them. */
>  	while ((skb = ppp_mp_reconstruct(ppp)))
> -		ppp_receive_nonmp_frame(ppp, skb);
> +	  	if (pskb_may_pull(skb, 2))
> +			ppp_receive_nonmp_frame(ppp, skb);
> +		else {
> +			++ppp->dev->stats.rx_length_errors;
> +			kfree_skb(skb);
> +			ppp_receive_error(ppp);
> +		}
> 
>  	return;

This fix looks correct, but could you please enclose the while()
loop in braces, that dangling else and the subsequent "return;"
statement look confusing otherwise.

Thanks.
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