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| author | Jiri Slaby <jslaby@suse.cz> | 2010-06-22 01:41:36 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-06-26 22:12:02 -0700 |
| commit | d41de3c10047d5f0b661593a8f4610a19f87621f (patch) | |
| tree | bb5384b0601f5afa5aff283e9824cc5893c8ec5d | |
| parent | cc413d9097dfc6237f37dcaf52346db1061a6119 (diff) | |
| download | linux-3.10-d41de3c10047d5f0b661593a8f4610a19f87621f.tar.gz linux-3.10-d41de3c10047d5f0b661593a8f4610a19f87621f.tar.bz2 linux-3.10-d41de3c10047d5f0b661593a8f4610a19f87621f.zip | |
ISDN: hysdn, fix potential NULL dereference
Stanse found that lp is dereferenced earlier than checked for being
NULL in hysdn_rx_netpkt. Move the initialization below the test.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | 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 72eb92647c1..feec8d89d71 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); |