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

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Message-Id: <1405459868-15089-69-git-send-email-kamal@canonical.com>
Date:	Tue, 15 Jul 2014 14:28:58 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Felix Fietkau <nbd@...nwrt.org>,
	Johannes Berg <johannes.berg@...el.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13 068/198] mac80211: fix a memory leak on sta rate selection table

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

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

From: Felix Fietkau <nbd@...nwrt.org>

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@...nwrt.org>
Reported-by: Christophe Prévotaux <cprevotaux@...inc.com>
Fixes: 0d528d85c519 ("mac80211: improve the rate control API")
[add commit log entry, remove pointless NULL check]
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 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));
 	kfree(sta);
 }
 
-- 
1.9.1

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