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hamradio: avoid null deref v3

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This should address the problems in version 1 (lazy) and version 2 (ugly).

Bump the stats on orig_dev not on the newly assigned NULL dev variable.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2009-12-28 06:54:55 +00:00 committed by David S. Miller
parent c064efca92
commit f65d1f082c
1 changed files with 3 additions and 1 deletions
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4
drivers/net/hamradio/bpqether.c
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@ -248,6 +248,7 @@ static netdev_tx_t bpq_xmit(struct sk_buff *skb, struct net_device *dev)
{
unsigned char *ptr;
struct bpqdev *bpq;
struct net_device *orig_dev;
int size;
/*
@ -282,8 +283,9 @@ static netdev_tx_t bpq_xmit(struct sk_buff *skb, struct net_device *dev)
bpq = netdev_priv(dev);
orig_dev = dev;
if ((dev = bpq_get_ether_dev(dev)) == NULL) {
dev->stats.tx_dropped++;
orig_dev->stats.tx_dropped++;
kfree_skb(skb);
return NETDEV_TX_OK;
}