diff options
| -rw-r--r-- | drivers/virtio/virtio_balloon.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 0d3531005a17..ab3e3d887e00 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -446,6 +446,7 @@ static void stats_handle_request(struct virtio_balloon *vb) struct virtqueue *vq; struct scatterlist sg; unsigned int len, num_stats; + int err; num_stats = update_balloon_stats(vb); @@ -453,7 +454,9 @@ static void stats_handle_request(struct virtio_balloon *vb) if (!virtqueue_get_buf(vq, &len)) return; sg_init_one(&sg, vb->stats, sizeof(vb->stats[0]) * num_stats); - virtqueue_add_outbuf(vq, &sg, 1, vb, GFP_KERNEL); + err = virtqueue_add_outbuf(vq, &sg, 1, vb, GFP_KERNEL); + if (WARN_ON_ONCE(err)) + return; virtqueue_kick(vq); } |