From patchwork Wed May 27 16:00:46 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Iremonger, Bernard" X-Patchwork-Id: 4919 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id E9D84E72; Wed, 27 May 2015 18:00:57 +0200 (CEST) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id 3E35FDE0 for ; Wed, 27 May 2015 18:00:54 +0200 (CEST) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga103.fm.intel.com with ESMTP; 27 May 2015 09:00:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,506,1427785200"; d="scan'208";a="701070504" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga001.jf.intel.com with ESMTP; 27 May 2015 09:00:49 -0700 Received: from sivswdev01.ir.intel.com (sivswdev01.ir.intel.com [10.237.217.45]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id t4RG0nAg002500; Wed, 27 May 2015 17:00:49 +0100 Received: from sivswdev01.ir.intel.com (localhost [127.0.0.1]) by sivswdev01.ir.intel.com with ESMTP id t4RG0nR4011691; Wed, 27 May 2015 17:00:49 +0100 Received: (from bairemon@localhost) by sivswdev01.ir.intel.com with id t4RG0mUG011687; Wed, 27 May 2015 17:00:48 +0100 From: Bernard Iremonger To: dev@dpdk.org Date: Wed, 27 May 2015 17:00:46 +0100 Message-Id: <1432742446-11646-1-git-send-email-bernard.iremonger@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: References: Subject: [dpdk-dev] [RFC PATCH V2 2/2] drivers/net/virtio: check vq parameter X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" If vq is NULL, there is a segmentation fault. Signed-off-by: Bernard Acked-by: Changchun Ouyang --- drivers/net/virtio/virtqueue.c | 14 ++++++++------ 1 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/net/virtio/virtqueue.c b/drivers/net/virtio/virtqueue.c index 8a3005f..7f60e3e 100644 --- a/drivers/net/virtio/virtqueue.c +++ b/drivers/net/virtio/virtqueue.c @@ -1,7 +1,7 @@ /*- * BSD LICENSE * - * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * Copyright(c) 2010-2015 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -60,11 +60,13 @@ virtqueue_detatch_unused(struct virtqueue *vq) struct rte_mbuf *cookie; int idx; - for (idx = 0; idx < vq->vq_nentries; idx++) { - if ((cookie = vq->vq_descx[idx].cookie) != NULL) { - vq->vq_descx[idx].cookie = NULL; - return cookie; + if (vq != NULL) + for (idx = 0; idx < vq->vq_nentries; idx++) { + cookie = vq->vq_descx[idx].cookie; + if (cookie != NULL) { + vq->vq_descx[idx].cookie = NULL; + return cookie; + } } - } return NULL; }