[PATCH] orinoco: possible null pointer dereference in orinoco_rx_monitor()

If the skb allocation fails, the current error path calls
dev_kfree_skb_irq() with a NULL argument.  Also, 'err' is not being used.

Coverity CID: 275.

Signed-off-by: Florin Malita <fmalita@gmail.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c
index 06523e2a8471..c2d0b09e0418 100644
--- a/drivers/net/wireless/orinoco.c
+++ b/drivers/net/wireless/orinoco.c
@@ -812,7 +812,6 @@ static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid,
         if (datalen > IEEE80211_DATA_LEN + 12) {
                 printk(KERN_DEBUG "%s: oversized monitor frame, "
                        "data length = %d\n", dev->name, datalen);
-                err = -EIO;
                 stats->rx_length_errors++;
                 goto update_stats;
         }
@@ -821,8 +820,7 @@ static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid,
         if (!skb) {
                 printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n",
                        dev->name);
-                err = -ENOMEM;
-                goto drop;
+                goto update_stats;
         }
 
         /* Copy the 802.11 header to the skb */