From: stephen hemminger <shemming@brocade.com>
Date: Tue, 17 Nov 2015 22:24:27 +0000 (-0800)
Subject: fm10k: fix memory leak
X-Git-Tag: v4.4-rc4~13^2~73
X-Git-Url: http://git.cascardo.eti.br/?p=cascardo%2Flinux.git;a=commitdiff_plain;h=6f97532ef05e49f1998a09f8359b83d00a7b3229

fm10k: fix memory leak

This was detected by Coverity.
The function skb_cow_head leaves skb alone on failure, so caller needs
to free.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
index 639263d5e833..7781e80896a6 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
@@ -627,8 +627,10 @@ static netdev_tx_t fm10k_xmit_frame(struct sk_buff *skb, struct net_device *dev)
 
 		/* verify the skb head is not shared */
 		err = skb_cow_head(skb, 0);
-		if (err)
+		if (err) {
+			dev_kfree_skb(skb);
 			return NETDEV_TX_OK;
+		}
 
 		/* locate vlan header */
 		vhdr = (struct vlan_hdr *)(skb->data + ETH_HLEN);