[PATCH net-next v1] virtio/vsock: check transport before skb allocation

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Pointer to transport could be checked before allocation of skbuff, thus
there is no need to free skbuff when this pointer is NULL.

Signed-off-by: Arseniy Krasnov <AVKrasnov@xxxxxxxxxxxxxx>
Reviewed-by: Bobby Eshleman <bobby.eshleman@xxxxxxxxxxxxx>
Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
---
 net/vmw_vsock/virtio_transport_common.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index cda587196475..607149259e8b 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -867,6 +867,9 @@ static int virtio_transport_reset_no_sock(const struct virtio_transport *t,
 	if (le16_to_cpu(hdr->op) == VIRTIO_VSOCK_OP_RST)
 		return 0;
 
+	if (!t)
+		return -ENOTCONN;
+
 	reply = virtio_transport_alloc_skb(&info, 0,
 					   le64_to_cpu(hdr->dst_cid),
 					   le32_to_cpu(hdr->dst_port),
@@ -875,11 +878,6 @@ static int virtio_transport_reset_no_sock(const struct virtio_transport *t,
 	if (!reply)
 		return -ENOMEM;
 
-	if (!t) {
-		kfree_skb(reply);
-		return -ENOTCONN;
-	}
-
 	return t->send_pkt(reply);
 }
 
-- 
2.25.1



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