Commit 03e9f8a0 authored Dec 04, 2017 by Yunjian Wang Committed by Michael S. Tsirkin Dec 07, 2017

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: Yunjian Wang <wangyunjian@huawei.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

parent 25f32223

drivers/net/virtio_net.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -714,7 +714,7 @@ static struct sk_buff receive_mergeable(struct net_device dev,
		int num_skb_frags;

		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",
		dev->name, num_buf,
		virtio16_to_cpu(vi->vdev,