From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH net-next] netlink: allow large data transfers from
 user-space
Date: Mon, 03 Jun 2013 08:25:52 -0700
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References: <1370272203-25062-1-git-send-email-pablo@netfilter.org>
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Cc: netdev@vger.kernel.org, davem@davemloft.net, kaber@trash.net
To: Pablo Neira Ayuso <pablo@netfilter.org>
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On Mon, 2013-06-03 at 17:10 +0200, Pablo Neira Ayuso wrote:

> +	if (size <= PAGE_SIZE)
> +		return alloc_skb(size, GFP_KERNEL);
> +

That would be

 	if (size < SKB_WITH_OVERHEAD(PAGE_SIZE))

or

	if (size < SKB_MAX_HEAD(0))