linux-kernel - [PATCH] Fix memory leak in cm.c

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Date:	Sun, 15 Jun 2014 22:26:19 -0400
From:	Nick <xerofoify@...il.com>
To:	swise@...lsio.com
Cc:	roland@...nel.org, sean.hefty@...el.com, hal.rosenstock@...il.com,
	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Fix memory leak in cm.c

This patch fixes memory by checking in function,
*get_skuff if it is be passing a Null skb
struct.
Cheers Nick 
Signed-off-by: Nick <xerofoify@...il.com>
---
 drivers/infiniband/hw/cxgb4/cm.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 5e153f6..f9477e2 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -340,7 +340,11 @@ static int status2errno(int status)
  */
 static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp)
 {
-	if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) {
+	if (!skb) {
+		return NULL;
+	}
+
+	else if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) {
 		skb_trim(skb, 0);
 		skb_get(skb);
 		skb_reset_transport_header(skb);
-- 
1.9.1

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