Patch "ath9k_htc: memory corruption calling set_bit()" has been added to the 4.1-stable tree

Patch "ath9k_htc: memory corruption calling set_bit()" has been added to the 4.1-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ath9k_htc: memory corruption calling set_bit()

to the 4.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ath9k_htc-memory-corruption-calling-set_bit.patch
and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 191f1aeeb93bb58e56f4d1868294ae22f3f67d4e Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 14 May 2015 11:34:48 +0300
Subject: ath9k_htc: memory corruption calling set_bit()

From: Dan Carpenter <dan.carpenter@oracle.com>

commit 191f1aeeb93bb58e56f4d1868294ae22f3f67d4e upstream.

In d8a2c51cdcae ('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: d8a2c51cdcae ('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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/wireless/ath/ath9k/htc.h |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -440,9 +440,9 @@ static inline void ath9k_htc_stop_btcoex
 }
 #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,


Patches currently in stable-queue which might be from dan.carpenter@oracle.com are

queue-4.1/asoc-imx-wm8962-add-a-missing-error-check.patch
queue-4.1/ath9k_htc-memory-corruption-calling-set_bit.patch