Patch "iwlwifi: mvm: fix accessing fw_id_to_mac_id" has been added to the 4.10-stable tree

Patch "iwlwifi: mvm: fix accessing fw_id_to_mac_id" has been added to the 4.10-stable tree

[gregkh]

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

    iwlwifi: mvm: fix accessing fw_id_to_mac_id

to the 4.10-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:
     iwlwifi-mvm-fix-accessing-fw_id_to_mac_id.patch
and it can be found in the queue-4.10 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 a95600294157ca7527ee7c70249fb53e09d8c566 Mon Sep 17 00:00:00 2001
From: Sara Sharon <sara.sharon@intel.com>
Date: Thu, 26 Jan 2017 14:43:32 +0200
Subject: iwlwifi: mvm: fix accessing fw_id_to_mac_id

From: Sara Sharon <sara.sharon@intel.com>

commit a95600294157ca7527ee7c70249fb53e09d8c566 upstream.

Access should be by rcu_dereference. Issue was found by sparse.

Fixes: 65e254821cee ("iwlwifi: mvm: use firmware station PM notification for AP_LINK_PS")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -2411,7 +2411,7 @@ void iwl_mvm_sta_pm_notif(struct iwl_mvm
 		return;
 
 	rcu_read_lock();
-	sta = mvm->fw_id_to_mac_id[notif->sta_id];
+	sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
 	if (WARN_ON(IS_ERR_OR_NULL(sta))) {
 		rcu_read_unlock();
 		return;


Patches currently in stable-queue which might be from sara.sharon@intel.com are

queue-4.10/iwlwifi-mvm-synchronize-firmware-dma-paging-memory.patch
queue-4.10/iwlwifi-mvm-fix-reorder-timer-re-arming.patch
queue-4.10/iwlwifi-pcie-fix-the-set-of-dma-memory-mask.patch
queue-4.10/iwlwifi-mvm-fix-pending-frame-counter-calculation.patch
queue-4.10/iwlwifi-pcie-trans-remove-unused-shift_param.patch
queue-4.10/iwlwifi-mvm-fix-accessing-fw_id_to_mac_id.patch
queue-4.10/iwlwifi-mvm-fix-references-to-first_agg_queue-in-dqa-mode.patch