tipc: honor msg2addr return value

The UDP msg2addr function tipc_udp_msg2addr() can return -EINVAL which
prior to this patch was unhanded in the caller.

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 1 deletions

diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index ad9d477cc242..6b109a808d4c 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -135,9 +135,12 @@ void tipc_disc_rcv(struct net *net, struct sk_buff *skb,
         u16 caps = msg_node_capabilities(hdr);
         bool respond = false;
         bool dupl_addr = false;
+        int err;
 
-        bearer->media->msg2addr(bearer, &maddr, msg_media_addr(hdr));
+        err = bearer->media->msg2addr(bearer, &maddr, msg_media_addr(hdr));
         kfree_skb(skb);
+        if (err)
+                return;
 
         /* Ensure message from node is valid and communication is permitted */
         if (net_id != tn->net_id)