netdev - [PATCH -next] mptcp/pm_netlink.c : add check for nla_put_in6

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Date:   Wed, 22 Apr 2020 00:18:40 +0800
From:   Bo YU <tsu.yubo@...il.com>
To:     matthieu.baerts@...sares.net, davem@...emloft.net, kuba@...nel.org,
        pabeni@...hat.com, mathew.j.martineau@...ux.intel.com
Cc:     netdev@...r.kernel.org, mptcp@...ts.01.org, tsu.yubo@...il.com
Subject: [PATCH -next] mptcp/pm_netlink.c : add check for nla_put_in6_addr

Normal there should be checked for nla_put_in6_addr like other
usage in net.

Detected by CoverityScan, CID# 1461639

Fixes: 01cacb00b35c("mptcp: add netlink-based PM")
Signed-off-by: Bo YU <tsu.yubo@...il.com>
---
BWT, I am not sure nla_put_in_addr whether or not to do such that
---
 net/mptcp/pm_netlink.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 86d61ab34c7c..f340b00672e1 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -603,8 +603,9 @@ static int mptcp_nl_fill_addr(struct sk_buff *skb,
 		nla_put_in_addr(skb, MPTCP_PM_ADDR_ATTR_ADDR4,
 				addr->addr.s_addr);
 #if IS_ENABLED(CONFIG_MPTCP_IPV6)
-	else if (addr->family == AF_INET6)
-		nla_put_in6_addr(skb, MPTCP_PM_ADDR_ATTR_ADDR6, &addr->addr6);
+	else if (addr->family == AF_INET6 &&
+		nla_put_in6_addr(skb, MPTCP_PM_ADDR_ATTR_ADDR6, &addr->addr6))
+		goto nla_put_failure;
 #endif
 	nla_nest_end(skb, attr);
 	return 0;
-- 
2.11.0