From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: WARNING: at net/ipv4/tcp.c:1610 tcp_recvmsg+0xb1b/0xc70()
Date: Mon, 28 May 2012 02:25:27 +0200
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Cc: davem@davemloft.net, netdev@vger.kernel.org,
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To: Jack Stone <jwjstone@fastmail.fm>
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On Sun, 2012-05-27 at 20:13 +0100, Jack Stone wrote:

> Could it be something to do with my staging network driver?

drivers/staging/rtl8712/rtl8712_recv.c

line 1096

precvframe->u.hdr.pkt = skb_clone(pskb, GFP_ATOMIC);

This looks very wrong.
Make sure you never _never_ hit this path.