futex: Fix bug in WARN_ON for NULL q.pi_state

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 <[email protected]> Cc: Dave Jones <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/1c85d97f6e5f79ec389a4ead3e367363c74bd09a.1342809673.git.dvhart@linux.intel.com Signed-off-by: Thomas Gleixner <[email protected]>
rtvt123 · Jul 24, 2012 · f27071c · f27071c
1 parent b6070a8
commit f27071c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git 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);