diff options
| author | Krzysztof Halasa <khc@pm.waw.pl> | 2008-09-03 18:21:56 +0200 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-09-24 18:49:02 -0400 |
| commit | 54069511633ca9d5b4e5d45cf32ffea06697c88b (patch) | |
| tree | 801af1e3c1a79599740d219fbb4f90986f18de81 /drivers | |
| parent | 2d1ea19da0e84117d3ebbad981e4664bef03152e (diff) | |
wan/hdlc_x25.c: fix a NULL dereference
WAN: fixes a NULL dereference in hdlc_x25.
Reported-by: Adrian Bunk <bunk@kernel.org>.
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wan/hdlc_x25.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/wan/hdlc_x25.c b/drivers/net/wan/hdlc_x25.c index 8b7e5d2e2ac..cbcbf6f0414 100644 --- a/drivers/net/wan/hdlc_x25.c +++ b/drivers/net/wan/hdlc_x25.c @@ -163,15 +163,17 @@ static void x25_close(struct net_device *dev) static int x25_rx(struct sk_buff *skb) { + struct net_device *dev = skb->dev; + if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) { - skb->dev->stats.rx_dropped++; + dev->stats.rx_dropped++; return NET_RX_DROP; } - if (lapb_data_received(skb->dev, skb) == LAPB_OK) + if (lapb_data_received(dev, skb) == LAPB_OK) return NET_RX_SUCCESS; - skb->dev->stats.rx_errors++; + dev->stats.rx_errors++; dev_kfree_skb_any(skb); return NET_RX_DROP; } |