[PATCH 2/3] futex: Fix bug in WARN_ON for NULL q.pi_state

[Darren Hart <dvhart@linux.intel.com>]

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 <dvhart@linux.intel.com>
CC: Dave Jones <davej@redhat.com>
CC: Thomas Gleixner <tglx@linutronix.de>
---
 kernel/futex.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/futex.c b/kernel/futex.c
index 05018bf..5551ada 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2343,7 +2343,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
 		 * 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);
-- 
1.7.10.4