From: Greg KH <gre...@linuxfoundation.org>

3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Darren Hart <dvh...@linux.intel.com>

commit f27071cb7fe3e1d37a9dbe6c0dfc5395cd40fa43 upstream.

The WARN_ON in futex_wait_requeue_pi() for a NULL q.pi_state was testing
the address (&q.pi_state) of the pointer instead of the value
(q.pi_state) of the pointer. Correct it accordingly.

Signed-off-by: Darren Hart <dvh...@linux.intel.com>
Cc: Dave Jones <da...@redhat.com>
Link: 
http://lkml.kernel.org/r/1c85d97f6e5f79ec389a4ead3e367363c74bd09a.1342809673.git.dvh...@linux.intel.com
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 kernel/futex.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2343,7 +2343,7 @@ static int futex_wait_requeue_pi(u32 __u
                 * signal.  futex_unlock_pi() will not destroy the lock_ptr nor
                 * the pi_state.
                 */
-               WARN_ON(!&q.pi_state);
+               WARN_ON(!q.pi_state);
                pi_mutex = &q.pi_state->pi_mutex;
                ret = rt_mutex_finish_proxy_lock(pi_mutex, to, &rt_waiter, 1);
                debug_rt_mutex_free_waiter(&rt_waiter);


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