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ath9k_htc: memory corruption calling set_bit()

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In d8a2c51cdc ('ath9k_htc: Use atomic operations for op_flags') we
changed things like this:

-	if (priv->op_flags & OP_TSF_RESET) {
+	if (test_bit(OP_TSF_RESET, &priv->op_flags)) {

The problem is that test_bit() takes a bit number and not a mask.  It
means that when we do:

	set_bit(OP_TSF_RESET, &priv->op_flags);

Then it sets the (1 << 6) bit instead of the 6 bit so we are setting a
bit which is past the end of the unsigned long.

Fixes: d8a2c51cdc ('ath9k_htc: Use atomic operations for op_flags')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Dan Carpenter 2015-05-14 11:34:48 +03:00 committed by Kalle Valo
parent 22f44150aa
commit 191f1aeeb9
1 changed files with 3 additions and 3 deletions
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6
drivers/net/wireless/ath/ath9k/htc.h
View File

@ -440,9 +440,9 @@ static inline void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv)
}
#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
#define OP_BT_PRIORITY_DETECTED BIT(3)
#define OP_BT_SCAN BIT(4)
#define OP_TSF_RESET BIT(6)
#define OP_BT_PRIORITY_DETECTED 3
#define OP_BT_SCAN 4
#define OP_TSF_RESET 6
enum htc_op_flags {
HTC_FWFLAG_NO_RMW,