mac802154: fix destructon ordering for ieee802154 devices

mutex_destroy() must be called before wpan_phy_free(), because it puts the last
reference and frees memory. Catched as overwritten poison in kmalloc-2048.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: linux-zigbee-devel@lists.sourceforge.net
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/mac802154/ieee802154_dev.c b/net/mac802154/ieee802154_dev.c
index e748aed290aaedee649bf89274b1fe15e8946c35..b7c7f815deae81068b073636dc2a0978c1ab3c53 100644 (file)
--- a/net/mac802154/ieee802154_dev.c
+++ b/net/mac802154/ieee802154_dev.c
@@ -224,9 +224,9 @@ void ieee802154_free_device(struct ieee802154_dev *hw)
 
        BUG_ON(!list_empty(&priv->slaves));
 
-       wpan_phy_free(priv->phy);
-
        mutex_destroy(&priv->slaves_mtx);
+
+       wpan_phy_free(priv->phy);
 }
 EXPORT_SYMBOL(ieee802154_free_device);