diff mbox

[dpdk-dev,3/3] vhost: protect user_get_vring_base from unknown devices

Message ID 1444986530-20893-4-git-send-email-jerome.jutteau@outscale.com (mailing list archive)
State Superseded, archived
Headers

Commit Message

Jerome Jutteau Oct. 16, 2015, 9:08 a.m. UTC 
  get_device return is not checked and may cause segfault when device is
not found. This patch fix this.

Signed-off-by: Jerome Jutteau <jerome.jutteau@outscale.com>
---
 lib/librte_vhost/vhost_user/virtio-net-user.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/lib/librte_vhost/vhost_user/virtio-net-user.c b/lib/librte_vhost/vhost_user/virtio-net-user.c
index 4689927..e0bc2a4 100644
--- a/lib/librte_vhost/vhost_user/virtio-net-user.c
+++ b/lib/librte_vhost/vhost_user/virtio-net-user.c
@@ -276,6 +276,8 @@  user_get_vring_base(struct vhost_device_ctx ctx,
 {
 	struct virtio_net *dev = get_device(ctx);
 
+	if (dev == NULL)
+		return -1;
 	/* We have to stop the queue (virtio) if it is running. */
 	if (dev->flags & VIRTIO_DEV_RUNNING)
 		notify_ops->destroy_device(dev);