[PATCH 2/5] nl80211: always check nla_put* return values

[Johannes Berg <johannes@sipsolutions.net>]

From: Johannes Berg <johannes.berg@intel.com>

A few instances were found where we didn't check them, add the
missing checks even though they'll probably never trigger as
the message should be large enough here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/wireless/nl80211.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 4c8cc743ae7d..ec024cb90faa 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -9444,8 +9444,10 @@ static int nl80211_send_wowlan_nd(struct sk_buff *msg,
 	if (!freqs)
 		return -ENOBUFS;
 
-	for (i = 0; i < req->n_channels; i++)
-		nla_put_u32(msg, i, req->channels[i]->center_freq);
+	for (i = 0; i < req->n_channels; i++) {
+		if (nla_put_u32(msg, i, req->channels[i]->center_freq))
+			return -ENOBUFS;
+	}
 
 	nla_nest_end(msg, freqs);
 
@@ -9459,9 +9461,10 @@ static int nl80211_send_wowlan_nd(struct sk_buff *msg,
 			if (!match)
 				return -ENOBUFS;
 
-			nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
-				req->match_sets[i].ssid.ssid_len,
-				req->match_sets[i].ssid.ssid);
+			if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
+				    req->match_sets[i].ssid.ssid_len,
+				    req->match_sets[i].ssid.ssid))
+				return -ENOBUFS;
 			nla_nest_end(msg, match);
 		}
 		nla_nest_end(msg, matches);
-- 
2.8.1