linux-kernel - [PATCH] NET: mac80211 - fix inappropriate memory freeing

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Date:	Mon, 3 Dec 2007 22:22:49 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Michael Wu <flamingice@...rmilk.net>
Cc:	LKWL <linux-wireless@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] NET: mac80211 - fix inappropriate memory freeing

This patch does fix inappropriate memory freeing in case
of requested rate_control_ops was not found. In this case
the list head entity is going to be accidently wasted.

Signed-off-by: Cyrill Gorcunov <gorcunov@...il.com>
---
 net/mac80211/ieee80211_rate.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/mac80211/ieee80211_rate.c b/net/mac80211/ieee80211_rate.c
index 3260a4a..c3f2783 100644
--- a/net/mac80211/ieee80211_rate.c
+++ b/net/mac80211/ieee80211_rate.c
@@ -60,11 +60,11 @@ void ieee80211_rate_control_unregister(struct rate_control_ops *ops)
 	list_for_each_entry(alg, &rate_ctrl_algs, list) {
 		if (alg->ops == ops) {
 			list_del(&alg->list);
+			kfree(alg);
 			break;
 		}
 	}
 	mutex_unlock(&rate_ctrl_mutex);
-	kfree(alg);
 }
 EXPORT_SYMBOL(ieee80211_rate_control_unregister);
 
-- 
1.5.3.5

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