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

[Jerome Jutteau]

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 at outscale.com>
---
 lib/librte_vhost/vhost_user/virtio-net-user.c | 2 ++
 1 file changed, 2 insertions(+)

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);
-- 
jerome