netdev - [patch] davinci_emac: off by one

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Message-ID: <20100303070724.GC5086@bicker>
Date:	Wed, 3 Mar 2010 10:07:24 +0300
From:	Dan Carpenter <error27@...il.com>
To:	netdev@...r.kernel.org
Cc:	Chaithrika U S <chaithrika@...com>, Sriramakrishnan <srk@...com>,
	"David S. Miller" <davem@...emloft.net>,
	Kevin Hilman <khilman@...prootsystems.com>,
	Anant Gole <anantgole@...com>, kernel-janitors@...r.kernel.org
Subject: [patch] davinci_emac: off by one

This off by one error was found by smatch.

drivers/net/davinci_emac.c +2390 emac_dev_open(13) error: buffer overflow 'priv->mac_addr' 6 <= 6

Signed-off-by: Dan Carpenter <error27@...il.com>
---
I don't have the hardware to test this.  If would be cool if someone
would verify that the hardware still works after the patch is applied.

diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 1605bc2..eab07cd 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -2386,7 +2386,7 @@ static int emac_dev_open(struct net_device *ndev)
 	struct emac_priv *priv = netdev_priv(ndev);
 
 	netif_carrier_off(ndev);
-	for (cnt = 0; cnt <= ETH_ALEN; cnt++)
+	for (cnt = 0; cnt < ETH_ALEN; cnt++)
 		ndev->dev_addr[cnt] = priv->mac_addr[cnt];
 
 	/* Configuration items */
--
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