From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754815Ab2JDWRj (ORCPT ); Thu, 4 Oct 2012 18:17:39 -0400 Received: from mail-pa0-f46.google.com ([209.85.220.46]:44231 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757743Ab2JDVRQ (ORCPT ); Thu, 4 Oct 2012 17:17:16 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg Kroah-Hartman , alan@lxorguk.ukuu.org.uk, Larry Finger Subject: [ 12/56] staging: r8712u: Do not queue cloned skb Date: Thu, 4 Oct 2012 14:15:33 -0700 Message-Id: <20121004211153.499282651@linuxfoundation.org> X-Mailer: git-send-email 1.7.12.2.421.g261b511 In-Reply-To: <20121004211152.101901246@linuxfoundation.org> References: <20121004211152.101901246@linuxfoundation.org> User-Agent: quilt/0.60-2.1.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Larry Finger commit fa16e5ea25d7dd83f663f333e70713aa2fa5dffe upstream. Some post-3.4 kernels have a problem when a cloned skb is used in the RX path. This patch handles one such case for r8712u. The patch was suggested by Eric Dumazet. Signed-off-by: Larry Finger Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8712/rtl8712_recv.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/staging/rtl8712/rtl8712_recv.c +++ b/drivers/staging/rtl8712/rtl8712_recv.c @@ -1127,6 +1127,9 @@ static void recv_tasklet(void *priv) recvbuf2recvframe(padapter, pskb); skb_reset_tail_pointer(pskb); pskb->len = 0; - skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb); + if (!skb_cloned(pskb)) + skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb); + else + consume_skb(pskb); } }