[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>
diff --git a/net/rose/rose_dev.c b/net/rose/rose_dev.c
index 9d0bf2a..7c279e2 100644
--- a/net/rose/rose_dev.c
+++ b/net/rose/rose_dev.c
@@ -59,6 +59,7 @@
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 @@
kfree_skb(skb);
+ len = skbn->len;
+
if (!rose_route_frame(skbn, NULL)) {
kfree_skb(skbn);
stats->tx_errors++;
@@ -82,7 +85,7 @@
}
stats->tx_packets++;
- stats->tx_bytes += skbn->len;
+ stats->tx_bytes += len;
#endif
return 1;
}