netdev - [PATCH 11/11] openvswitch: Add skb_clone NULL check for the sampling action.

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Message-Id: <1405296848-3939-1-git-send-email-pshelar@nicira.com>
Date:	Sun, 13 Jul 2014 17:14:08 -0700
From:	Pravin B Shelar <pshelar@...ira.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, Andy Zhou <azhou@...ira.com>,
	Pravin B Shelar <pshelar@...ira.com>
Subject: [PATCH 11/11] openvswitch: Add skb_clone NULL check for the sampling action.

From: Andy Zhou <azhou@...ira.com>

Fix a bug where skb_clone() NULL check is missing in sample action
implementation.

Signed-off-by: Andy Zhou <azhou@...ira.com>
Signed-off-by: Pravin B Shelar <pshelar@...ira.com>
---
 net/openvswitch/actions.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 5920512..09ccbb8 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -477,6 +477,8 @@ static int sample(struct datapath *dp, struct sk_buff *skb,
 		skb_get(skb);
 	} else {
 		sample_skb = skb_clone(skb, GFP_ATOMIC);
+		if (!sample_skb) /* Skip sample action when out of memory. */
+			return 0;
 	}
 
 	/* Note that do_execute_actions() never consumes skb.
-- 
1.9.3

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