linux-kernel - [PATCH 2/2] ath9k: index out of bounds

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Date:	Sun, 10 Apr 2011 21:09:55 +0200
From:	roel <roel.kluin@...il.com>
To:	"Luis R. Rodriguez" <lrodriguez@...eros.com>,
	Jouni Malinen <jmalinen@...eros.com>,
	Vasanthakumar Thiagarajan <vasanth@...eros.com>,
	Senthil Balasubramanian <senthilkumar@...eros.com>,
	linux-wireless@...r.kernel.org, ath9k-devel@...ts.ath9k.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] ath9k: index out of bounds

Check whether index is within bounds before testing the element

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
 drivers/net/wireless/ath/ath9k/rc.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c
index 4c0d36a..1809409 100644
--- a/drivers/net/wireless/ath/ath9k/rc.c
+++ b/drivers/net/wireless/ath/ath9k/rc.c
@@ -1092,8 +1092,7 @@ static int ath_rc_get_rateindex(const struct ath_rate_table *rate_table,
 	if (!(rate->flags & IEEE80211_TX_RC_MCS))
 		return rate->idx;
 
-	while (rate->idx > mcs_rix_off[i] &&
-	       i < ARRAY_SIZE(mcs_rix_off)) {
+	while (i < ARRAY_SIZE(mcs_rix_off) && rate->idx > mcs_rix_off[i]) {
 		rix++; i++;
 	}
 
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