[PATCH net-next 1/2] tipc: honor msg2addr return value

[Richard Alpe <richard.alpe@ericsson.com>]

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>
---
 net/tipc/discover.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index ad9d477..6b109a8 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)
-- 
2.1.4


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