commit b15ca182ed136087f6a2cb9ffe880c923f36a56e
author Thomas Graf <tgraf@suug.ch> Wed Oct 26 10:53:16 2016 +0200
committer David S. Miller <davem@davemloft.net> Sat Oct 29 14:57:42 2016 -0400
tree 9f5b9829fdeb6491eae3c19d92a1a3a80e19f31d
parent f8da977989c5d5d2f38e025d4ac1e18243723dbb

netlink: Add nla_memdup() to wrap kmemdup() use on nlattr

Wrap several common instances of:
	kmemdup(nla_data(attr), nla_len(attr), GFP_KERNEL);

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/wireless/nl80211.c

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 271707d..0d3ab4b 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -10625,8 +10625,7 @@ static int handle_nan_filter(struct nlattr *attr_filter,
 
 	i = 0;
 	nla_for_each_nested(attr, attr_filter, rem) {
-		filter[i].filter = kmemdup(nla_data(attr), nla_len(attr),
-					   GFP_KERNEL);
+		filter[i].filter = nla_memdup(attr, GFP_KERNEL);
 		filter[i].len = nla_len(attr);
 		i++;
 	}