ipv4: fix a memory leak in ic_bootp_send_if

when dev_hard_header() failed, the newly allocated skb should be freed.

Signed-off-by: RongQing.Li <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 0da2afc..7f17ba8 100644 (file)
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -822,8 +822,13 @@ static void __init ic_bootp_send_if(struct ic_device *d, unsigned long jiffies_d
        skb->dev = dev;
        skb->protocol = htons(ETH_P_IP);
        if (dev_hard_header(skb, dev, ntohs(skb->protocol),
-                           dev->broadcast, dev->dev_addr, skb->len) < 0 ||
-           dev_queue_xmit(skb) < 0)
+                           dev->broadcast, dev->dev_addr, skb->len) < 0) {
+               kfree_skb(skb);
+               printk("E");
+               return;
+       }
+
+       if (dev_queue_xmit(skb) < 0)
                printk("E");
 }