From: Dan Carpenter <error27@gmail.com>
To: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: "David S. Miller" <davem@davemloft.net>,
Jiri Pirko <jpirko@redhat.com>,
Denis Kirjanov <kirjanov@gmail.com>,
Saeed Bishara <saeed@marvell.com>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch -next] mv643xx_eth: potential null dereference
Date: Fri, 23 Jul 2010 10:15:28 +0000 [thread overview]
Message-ID: <20100723101528.GF26313@bicker> (raw)
We assume that "pd" can be null on the previous line, and throughout the
function so we should check it here as well. This was introduced by
9b2c2ff7a1c0 "mv643xx_eth: use sw csum for big packets"
Signed-off-by: Dan Carpenter <error27@gmail.com>
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index 2fcdb1e..9166f55 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -2675,7 +2675,8 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
* Detect hardware parameters.
*/
msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
- msp->tx_csum_limit = pd->tx_csum_limit ? pd->tx_csum_limit : 9 * 1024;
+ msp->tx_csum_limit = (pd && pd->tx_csum_limit) ?
+ pd->tx_csum_limit : 9 * 1024;
infer_hw_params(msp);
platform_set_drvdata(pdev, msp);
next reply other threads:[~2010-07-23 10:15 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-23 10:15 Dan Carpenter [this message]
2010-07-23 10:32 ` [patch -next] mv643xx_eth: potential null dereference Joe Perches
2010-07-23 11:05 ` [patch -next v2] " Dan Carpenter
2010-07-23 11:18 ` Lennert Buytenhek
2010-07-23 20:05 ` David Miller
2010-07-23 16:30 ` walter harms
2010-07-23 22:15 ` Dan Carpenter
2010-07-24 8:59 ` walter harms
2010-07-24 19:00 ` Lennert Buytenhek
2010-07-25 14:47 ` walter harms
2010-07-25 15:54 ` Lennert Buytenhek
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