netdev - [PATCH net-next] tipc: fix error handling in tipc_udp

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Message-ID: <1522074764-22678-1-git-send-email-weiyongjun1@huawei.com>
Date:   Mon, 26 Mar 2018 14:32:44 +0000
From:   Wei Yongjun <weiyongjun1@...wei.com>
To:     Jon Maloy <jon.maloy@...csson.com>,
        Ying Xue <ying.xue@...driver.com>
CC:     Wei Yongjun <weiyongjun1@...wei.com>, <netdev@...r.kernel.org>,
        <tipc-discussion@...ts.sourceforge.net>,
        <kernel-janitors@...r.kernel.org>
Subject: [PATCH net-next] tipc: fix error handling in tipc_udp_enable()

Release alloced resource before return from the error handling
case in tipc_udp_enable(), otherwise will cause memory leak.

Fixes: 52dfae5c85a4 ("tipc: obtain node identity from interface by default")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 net/tipc/udp_media.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index 2c13b18..e7d91f5 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -687,7 +687,8 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b,
 	}
 	if (!tipc_own_id(net)) {
 		pr_warn("Failed to set node id, please configure manually\n");
-		return -EINVAL;
+		err = -EINVAL;
+		goto err;
 	}
 
 	b->bcast_addr.media_id = TIPC_MEDIA_TYPE_UDP;