1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 50c5f42d7a9f..0413157f3b49 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -44,8 +44,7 @@ static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES;
 module_param(oom_pages, int, S_IRUSR | S_IWUSR);
 MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
 
-struct virtio_balloon
-{
+struct virtio_balloon {
         struct virtio_device *vdev;
         struct virtqueue *inflate_vq, *deflate_vq, *stats_vq;
 
@@ -466,6 +465,12 @@ static int virtballoon_probe(struct virtio_device *vdev)
         struct virtio_balloon *vb;
         int err;
 
+        if (!vdev->config->get) {
+                dev_err(&vdev->dev, "%s failure: config access disabled\n",
+                        __func__);
+                return -EINVAL;
+        }
+
         vdev->priv = vb = kmalloc(sizeof(*vb), GFP_KERNEL);
         if (!vb) {
                 err = -ENOMEM;