diff options
| author | Nathan Chancellor <natechancellor@gmail.com> | 2018-04-09 18:21:47 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 19:50:23 +0200 |
| commit | db203ab2402dbb9b58b038b8f9097a997f4d8a76 (patch) | |
| tree | ed6cad33e066727ba9f372eb0107fbad73b5da7e | |
| parent | 2f483e77b0fd425d64e99095f497dbf3cf9f27fb (diff) | |
virtio_net: check return value of skb_to_sgvec in one more location
Kernels that do not have f6b10209b90d ("virtio-net: switch to use
build_skb() for small buffer") will have an extra call to skb_to_sgvec
that is not handled by e2fcad58fd23 ("virtio_net: check return value of
skb_to_sgvec always"). Since the former does not appear to be stable
material, just fix the call up directly.
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/virtio_net.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index bb2bae522f67..d01285250204 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -556,7 +556,12 @@ static int add_recvbuf_small(struct virtnet_info *vi, struct receive_queue *rq, hdr = skb_vnet_hdr(skb); sg_init_table(rq->sg, 2); sg_set_buf(rq->sg, hdr, vi->hdr_len); - skb_to_sgvec(skb, rq->sg + 1, 0, skb->len); + + err = skb_to_sgvec(skb, rq->sg + 1, 0, skb->len); + if (unlikely(err < 0)) { + dev_kfree_skb(skb); + return err; + } err = virtqueue_add_inbuf(rq->vq, rq->sg, 2, skb, gfp); if (err < 0) |