Backmerge tag 'v4.9-rc8' into drm-next

Linux 4.9-rc8

Daniel requested this so we could apply some follow on fixes cleanly to -next.

1 files changed, 12 insertions, 7 deletions

diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 070e3290aa6e..7869b0651576 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -491,7 +491,13 @@ static int macvtap_newlink(struct net *src_net,
 	/* Don't put anything that may fail after macvlan_common_newlink
 	 * because we can't undo what it does.
 	 */
-	return macvlan_common_newlink(src_net, dev, tb, data);
+	err = macvlan_common_newlink(src_net, dev, tb, data);
+	if (err) {
+		netdev_rx_handler_unregister(dev);
+		return err;
+	}
+
+	return 0;
 }
 
 static void macvtap_dellink(struct net_device *dev,
@@ -736,13 +742,8 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
 
 	if (zerocopy)
 		err = zerocopy_sg_from_iter(skb, from);
-	else {
+	else
 		err = skb_copy_datagram_from_iter(skb, 0, from, len);
-		if (!err && m && m->msg_control) {
-			struct ubuf_info *uarg = m->msg_control;
-			uarg->callback(uarg, false);
-		}
-	}
 
 	if (err)
 		goto err_kfree;
@@ -773,7 +774,11 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
 		skb_shinfo(skb)->destructor_arg = m->msg_control;
 		skb_shinfo(skb)->tx_flags |= SKBTX_DEV_ZEROCOPY;
 		skb_shinfo(skb)->tx_flags |= SKBTX_SHARED_FRAG;
+	} else if (m && m->msg_control) {
+		struct ubuf_info *uarg = m->msg_control;
+		uarg->callback(uarg, false);
 	}
+
 	if (vlan) {
 		skb->dev = vlan->dev;
 		dev_queue_xmit(skb);