From mboxrd@z Thu Jan 1 00:00:00 1970 From: linas@austin.ibm.com (Linas Vepstas) Subject: [PATCH 6/14] Spidernet another skb mem leak Date: Wed, 13 Dec 2006 15:16:18 -0600 Message-ID: <20061213211618.GF1915@austin.ibm.com> References: <20061213210010.GR4329@austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, linuxppc-dev@ozlabs.org, jgarzik@pobox.com, Christoph Hellwig , Ishizaki Kou , Jens Osterkamp , James K Lewis , Arnd Bergmann Return-path: Received: from e31.co.us.ibm.com ([32.97.110.149]:46359 "EHLO e31.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751018AbWLMVQV (ORCPT ); Wed, 13 Dec 2006 16:16:21 -0500 Received: from westrelay02.boulder.ibm.com (westrelay02.boulder.ibm.com [9.17.195.11]) by e31.co.us.ibm.com (8.13.8/8.12.11) with ESMTP id kBDLGLuE021408 for ; Wed, 13 Dec 2006 16:16:21 -0500 Received: from d03av03.boulder.ibm.com (d03av03.boulder.ibm.com [9.17.195.169]) by westrelay02.boulder.ibm.com (8.13.6/8.13.6/NCO v8.1.1) with ESMTP id kBDLGKbT501728 for ; Wed, 13 Dec 2006 14:16:20 -0700 Received: from d03av03.boulder.ibm.com (loopback [127.0.0.1]) by d03av03.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id kBDLGJQF027771 for ; Wed, 13 Dec 2006 14:16:20 -0700 To: Andrew Morton Content-Disposition: inline In-Reply-To: <20061213210010.GR4329@austin.ibm.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Another skb leak in an error branch. Fix this by adding call to dev_kfree_skb_irq() after moving to a more appropriate spot. Signed-off-by: Linas Vepstas Cc: James K Lewis Cc: Arnd Bergmann ---- drivers/net/spider_net.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) Index: linux-2.6.19-git7/drivers/net/spider_net.c =================================================================== --- linux-2.6.19-git7.orig/drivers/net/spider_net.c 2006-12-13 14:24:16.000000000 -0600 +++ linux-2.6.19-git7/drivers/net/spider_net.c 2006-12-13 14:24:20.000000000 -0600 @@ -926,19 +926,8 @@ spider_net_pass_skb_up(struct spider_net data_status = descr->data_status; data_error = descr->data_error; - netdev = card->netdev; - /* the cases we'll throw away the packet immediately */ - if (data_error & SPIDER_NET_DESTROY_RX_FLAGS) { - if (netif_msg_rx_err(card)) - pr_err("error in received descriptor found, " - "data_status=x%08x, data_error=x%08x\n", - data_status, data_error); - card->spider_stats.rx_desc_error++; - return 0; - } - skb = descr->skb; skb->dev = netdev; skb_put(skb, descr->valid_size); @@ -1037,6 +1026,18 @@ spider_net_decode_one_descr(struct spide goto refill; } + /* The cases we'll throw away the packet immediately */ + if (descr->data_error & SPIDER_NET_DESTROY_RX_FLAGS) { + if (netif_msg_rx_err(card)) + pr_err("%s: error in received descriptor found, " + "data_status=x%08x, data_error=x%08x\n", + card->netdev->name, + descr->data_status, descr->data_error); + card->spider_stats.rx_desc_error++; + dev_kfree_skb_irq(descr->skb); + goto refill; + } + /* ok, we've got a packet in descr */ result = spider_net_pass_skb_up(descr, card); refill: