netdev - [PATCH net 1/3] caif: Fix memory leakage in the chnl

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Date:	Thu, 12 Apr 2012 20:18:07 +0200
From:	Sjur Brændeland <sjur.brandeland@...ricsson.com>
To:	netdev@...r.kernel.org, davem@...emloft.net
Cc:	sjurbren@...il.com
Subject: [PATCH net 1/3] caif: Fix memory leakage in the chnl_net.c.

From: Tomasz Gregorek <tomasz.gregorek@...ricsson.com>

Added kfree_skb() calls in the chnk_net.c file on
the error paths.

Signed-off-by: Sjur Brændeland <sjur.brandeland@...ricsson.com>
---
 net/caif/chnl_net.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/net/caif/chnl_net.c b/net/caif/chnl_net.c
index 93e9c6d..69771c0 100644
--- a/net/caif/chnl_net.c
+++ b/net/caif/chnl_net.c
@@ -103,6 +103,7 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt)
 		skb->protocol = htons(ETH_P_IPV6);
 		break;
 	default:
+		kfree_skb(skb);
 		priv->netdev->stats.rx_errors++;
 		return -EINVAL;
 	}
@@ -220,14 +221,16 @@ static int chnl_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	if (skb->len > priv->netdev->mtu) {
 		pr_warn("Size of skb exceeded MTU\n");
+		kfree_skb(skb);
 		dev->stats.tx_errors++;
-		return -ENOSPC;
+		return NETDEV_TX_OK;
 	}
 
 	if (!priv->flowenabled) {
 		pr_debug("dropping packets flow off\n");
+		kfree_skb(skb);
 		dev->stats.tx_dropped++;
-		return NETDEV_TX_BUSY;
+		return NETDEV_TX_OK;
 	}
 
 	if (priv->conn_req.protocol == CAIFPROTO_DATAGRAM_LOOP)
@@ -242,7 +245,7 @@ static int chnl_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	result = priv->chnl.dn->transmit(priv->chnl.dn, pkt);
 	if (result) {
 		dev->stats.tx_dropped++;
-		return result;
+		return NETDEV_TX_OK;
 	}
 
 	/* Update statistics. */
-- 
1.7.5.4

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