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-rw-r--r--net/hsr/hsr_framereg.c4
-rw-r--r--net/hsr/hsr_main.c15
2 files changed, 15 insertions, 4 deletions
diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c
index 0b0199878..e44a039e3 100644
--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -235,6 +235,10 @@ struct hsr_node *hsr_get_node(struct hsr_port *port, struct list_head *node_db,
*/
if (ethhdr->h_proto == htons(ETH_P_PRP) ||
ethhdr->h_proto == htons(ETH_P_HSR)) {
+ /* Check if skb contains hsr_ethhdr */
+ if (skb->mac_len < sizeof(struct hsr_ethhdr))
+ return NULL;
+
/* Use the existing sequence_nr from the tag as starting point
* for filtering duplicate frames.
*/
diff --git a/net/hsr/hsr_main.c b/net/hsr/hsr_main.c
index b099c3150..257b50124 100644
--- a/net/hsr/hsr_main.c
+++ b/net/hsr/hsr_main.c
@@ -148,14 +148,21 @@ static struct notifier_block hsr_nb = {
static int __init hsr_init(void)
{
- int res;
+ int err;
BUILD_BUG_ON(sizeof(struct hsr_tag) != HSR_HLEN);
- register_netdevice_notifier(&hsr_nb);
- res = hsr_netlink_init();
+ err = register_netdevice_notifier(&hsr_nb);
+ if (err)
+ return err;
+
+ err = hsr_netlink_init();
+ if (err) {
+ unregister_netdevice_notifier(&hsr_nb);
+ return err;
+ }
- return res;
+ return 0;
}
static void __exit hsr_exit(void)