Commit 03e9f8a0 authored by Yunjian Wang's avatar Yunjian Wang Committed by Michael S. Tsirkin

virtio_net: fix return value check in receive_mergeable()

The function virtqueue_get_buf_ctx() could return NULL, the return
value 'buf' need to be checked with NULL, not value 'ctx'.
Signed-off-by: default avatarYunjian Wang <>
Signed-off-by: default avatarMichael S. Tsirkin <>
parent 25f32223
...@@ -714,7 +714,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev, ...@@ -714,7 +714,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
int num_skb_frags; int num_skb_frags;
buf = virtqueue_get_buf_ctx(rq->vq, &len, &ctx); buf = virtqueue_get_buf_ctx(rq->vq, &len, &ctx);
if (unlikely(!ctx)) { if (unlikely(!buf)) {
pr_debug("%s: rx error: %d buffers out of %d missing\n", pr_debug("%s: rx error: %d buffers out of %d missing\n",
dev->name, num_buf, dev->name, num_buf,
virtio16_to_cpu(vi->vdev, virtio16_to_cpu(vi->vdev,
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