From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id AD5BC7CE3; Fri, 2 Jun 2017 02:13:57 +0200 (CEST) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Jun 2017 17:13:56 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.39,281,1493708400"; d="scan'208";a="94594242" Received: from yliu-dev.sh.intel.com ([10.239.67.162]) by orsmga002.jf.intel.com with ESMTP; 01 Jun 2017 17:13:55 -0700 From: Yuanhan Liu To: dev@dpdk.org Cc: Maxime Coquelin , Yuanhan Liu , stable@dpdk.org Date: Fri, 2 Jun 2017 08:14:46 +0800 Message-Id: <1496362486-1741-1-git-send-email-yuanhan.liu@linux.intel.com> X-Mailer: git-send-email 1.9.0 Subject: [dpdk-dev] [PATCH] vhost: fix crash on NUMA X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Jun 2017 00:13:58 -0000 The queue allocation was changed, from allocating one queue-pair at a time to one queue at a time. Most of the changes have been done, but just with one being missed: the size of coping the old queue is still based on queue-pair at numa_realloc(), which leads to overwritten issue. As a result, crash may happen. Fix it by specifying the right copy size. Also, the net queue macros are not used any more. Remove them. Fixes: ab4d7b9f1afc ("vhost: turn queue pair to vring") Cc: stable@dpdk.org Reported-by: Ciara Loftus Signed-off-by: Yuanhan Liu --- lib/librte_vhost/vhost_user.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c index 5c8058b..e486b78 100644 --- a/lib/librte_vhost/vhost_user.c +++ b/lib/librte_vhost/vhost_user.c @@ -238,8 +238,6 @@ numa_realloc(struct virtio_net *dev, int index) struct vhost_virtqueue *old_vq, *vq; int ret; - enum {VIRTIO_RXQ, VIRTIO_TXQ, VIRTIO_QNUM}; - old_dev = dev; vq = old_vq = dev->virtqueue[index]; @@ -261,7 +259,7 @@ numa_realloc(struct virtio_net *dev, int index) if (!vq) return dev; - memcpy(vq, old_vq, sizeof(*vq) * VIRTIO_QNUM); + memcpy(vq, old_vq, sizeof(*vq)); rte_free(old_vq); } -- 2.8.1