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From: Chenbo Xia <chenbo.xia@intel.com>
To: dev@dpdk.org
Cc: maxime.coquelin@redhat.com, stable@dpdk.org
Subject: [dpdk-stable] [PATCH] examples/vhost: fix unchecked return value
Date: Fri, 19 Feb 2021 10:40:11 +0800	[thread overview]
Message-ID: <20210219024011.77233-1-chenbo.xia@intel.com> (raw)

This patch fixes unchecked return value for rte_vhost_get_mem_table(),
which is reported by coverity.

Coverity issue: 364233
Fixes: ca059fa5e290 ("examples/vhost: demonstrate the new generic APIs")
Cc: stable@dpdk.org

Signed-off-by: Chenbo Xia <chenbo.xia@intel.com>
---
 examples/vhost/virtio_net.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/examples/vhost/virtio_net.c b/examples/vhost/virtio_net.c
index 64bf3d19ff..9064fc3a82 100644
--- a/examples/vhost/virtio_net.c
+++ b/examples/vhost/virtio_net.c
@@ -23,6 +23,7 @@ vs_vhost_net_setup(struct vhost_dev *dev)
 	uint16_t i;
 	int vid = dev->vid;
 	struct vhost_queue *queue;
+	int ret;
 
 	RTE_LOG(INFO, VHOST_CONFIG,
 		"setting builtin vhost-user net driver\n");
@@ -33,7 +34,12 @@ vs_vhost_net_setup(struct vhost_dev *dev)
 	else
 		dev->hdr_len = sizeof(struct virtio_net_hdr);
 
-	rte_vhost_get_mem_table(vid, &dev->mem);
+	ret = rte_vhost_get_mem_table(vid, &dev->mem);
+	if (ret < 0) {
+		RTE_LOG(ERR, VHOST_CONFIG, "Failed to get "
+			"VM memory layout for device(%d)\n", vid);
+		return;
+	}
 
 	dev->nr_vrings = rte_vhost_get_vring_num(vid);
 	for (i = 0; i < dev->nr_vrings; i++) {
-- 
2.17.1


             reply	other threads:[~2021-02-19  2:49 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-19  2:40 Chenbo Xia [this message]
2021-03-19  9:50 ` Maxime Coquelin
2021-03-31  6:56 ` [dpdk-stable] [dpdk-dev] " Xia, Chenbo

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