[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <1262828921-29517-3-git-send-email-a.beregalov@gmail.com>
Date: Thu, 7 Jan 2010 04:48:40 +0300
From: Alexander Beregalov <a.beregalov@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Alexander Beregalov <a.beregalov@...il.com>,
Armin Schindler <mac@...ware.de>
Subject: [PATCH 3/4] ISDN: hysdn: avoid NULL pointer dereference
Assign dev only if lp is not NULL.
Cc: Armin Schindler <mac@...ware.de>
Signed-off-by: Alexander Beregalov <a.beregalov@...il.com>
---
drivers/isdn/hysdn/hysdn_net.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/isdn/hysdn/hysdn_net.c b/drivers/isdn/hysdn/hysdn_net.c
index 72eb926..feec8d8 100644
--- a/drivers/isdn/hysdn/hysdn_net.c
+++ b/drivers/isdn/hysdn/hysdn_net.c
@@ -187,12 +187,13 @@ void
hysdn_rx_netpkt(hysdn_card * card, unsigned char *buf, unsigned short len)
{
struct net_local *lp = card->netif;
- struct net_device *dev = lp->dev;
+ struct net_device *dev;
struct sk_buff *skb;
if (!lp)
return; /* non existing device */
+ dev = lp->dev;
dev->stats.rx_bytes += len;
skb = dev_alloc_skb(len);
--
1.6.6
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists