Messages in this thread Patch in this message | | | From | wangyunjian <> | Subject | [PATCH net] virtio_net: fix return value check in receive_mergeable() | Date | Mon, 4 Dec 2017 14:02:19 +0800 |
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From: Yunjian Wang <wangyunjian@huawei.com>
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> --- drivers/net/virtio_net.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 19a985e..559b215 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -756,7 +756,7 @@ 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, -- 1.8.3.1
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