linux-kernel - [PATCH 4.4 072/137] rtnl: fix msg size calculation in if_nlmsg

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Date:	Mon, 18 Apr 2016 11:28:54 +0900
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, David Ahern <dsahern@...il.com>,
	Nicolas Dichtel <nicolas.dichtel@...nd.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.4 072/137] rtnl: fix msg size calculation in if_nlmsg_size()

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nicolas Dichtel <nicolas.dichtel@...nd.com>

[ Upstream commit c57c7a95da842807b475b823ed2e5435c42cb3b0 ]

Size of the attribute IFLA_PHYS_PORT_NAME was missing.

Fixes: db24a9044ee1 ("net: add support for phys_port_name")
CC: David Ahern <dsahern@...il.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
Acked-by: David Ahern <dsahern@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/core/rtnetlink.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -905,6 +905,7 @@ static noinline size_t if_nlmsg_size(con
 	       + rtnl_link_get_af_size(dev, ext_filter_mask) /* IFLA_AF_SPEC */
 	       + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */
 	       + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_SWITCH_ID */
+	       + nla_total_size(IFNAMSIZ) /* IFLA_PHYS_PORT_NAME */
 	       + nla_total_size(1); /* IFLA_PROTO_DOWN */
 
 }