[PATCH 3.13 068/198] mac80211: fix a memory leak on sta rate selection table

From: Kamal Mostafa
Date: Tue Jul 15 2014 - 17:43:12 EST -stable review patch. If anyone has any objections, please let me know.


From: Felix Fietkau <nbd@xxxxxxxxxxx>

commit 53d045258ee2e38b1e882617cb0799a04d05f5fa upstream.

If the rate control algorithm uses a selection table, it
is leaked when the station is destroyed - fix that.

Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Reported-by: Christophe PrÃvotaux <cprevotaux@xxxxxxxxxx>
Fixes: 0d528d85c519 ("mac80211: improve the rate control API")
[add commit log entry, remove pointless NULL check]
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
net/mac80211/sta_info.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index f92e221..ae0c132 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -271,6 +271,7 @@ void sta_info_free(struct ieee80211_local *local, struct sta_info *sta)

sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr);

+ kfree(rcu_dereference_raw(sta->sta.rates));


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