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authorRalf Baechle <ralf@linux-mips.org>2006-07-03 19:29:15 -0700
committerDavid S. Miller <davem@davemloft.net>2006-07-03 19:29:15 -0700
commit8dc22d2b642f8a6f14ef8878777a05311e5d1d7e (patch)
treefb6ec490d0318cf7c267668f6d06391b2033b2fb /net
parent518d1c9679f644811adaa22d853f43a83fbdae84 (diff)
[ROSE]: Fix dereference of skb pointer after free.
If rose_route_frame return success we'll dereference a stale pointer. Likely this is only going to result in bad statistics for the ROSE interface. This fixes coverity 946. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/rose/rose_dev.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/rose/rose_dev.c b/net/rose/rose_dev.c
index 9d0bf2a1ea3f..7c279e2659ec 100644
--- a/net/rose/rose_dev.c
+++ b/net/rose/rose_dev.c
@@ -59,6 +59,7 @@ static int rose_rebuild_header(struct sk_buff *skb)
struct net_device_stats *stats = netdev_priv(dev);
unsigned char *bp = (unsigned char *)skb->data;
struct sk_buff *skbn;
+ unsigned int len;
#ifdef CONFIG_INET
if (arp_find(bp + 7, skb)) {
@@ -75,6 +76,8 @@ static int rose_rebuild_header(struct sk_buff *skb)
kfree_skb(skb);
+ len = skbn->len;
+
if (!rose_route_frame(skbn, NULL)) {
kfree_skb(skbn);
stats->tx_errors++;
@@ -82,7 +85,7 @@ static int rose_rebuild_header(struct sk_buff *skb)
}
stats->tx_packets++;
- stats->tx_bytes += skbn->len;
+ stats->tx_bytes += len;
#endif
return 1;
}

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