futex: refresh patch for stable backport of c74aef2d06a

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/patches/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch b/patches/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch
index 70e3601..6fe021d 100644
--- a/patches/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch
+++ b/patches/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch
@@ -1,6 +1,8 @@
+From 04915f95519eedd70dd247794358b3136a4000f3 Mon Sep 17 00:00:00 2001
 From: Thomas Gleixner <tglx@linutronix.de>
 Date: Fri, 1 Mar 2013 11:17:42 +0100
-Subject: futex: Ensure lock/unlock symetry versus pi_lock and hash bucket lock
+Subject: [PATCH] futex: Ensure lock/unlock symetry versus pi_lock and hash
+ bucket lock
 
 In exit_pi_state_list() we have the following locking construct:
 
@@ -24,19 +26,21 @@
 Reported-by: Yong Zhang <yong.zhang@windriver.com>
 Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- kernel/futex.c |    2 ++
- 1 file changed, 2 insertions(+)
 
+diff --git a/kernel/futex.c b/kernel/futex.c
+index bebcc1a0dcf7..8633f667560e 100644
 --- a/kernel/futex.c
 +++ b/kernel/futex.c
-@@ -911,7 +911,9 @@ void exit_pi_state_list(struct task_stru
- 		 * task still owns the PI-state:
+@@ -917,7 +917,9 @@ void exit_pi_state_list(struct task_struct *curr)
  		 */
  		if (head->next != next) {
+ 			raw_spin_unlock(&pi_state->pi_mutex.wait_lock);
 +			raw_spin_unlock_irq(&curr->pi_lock);
  			spin_unlock(&hb->lock);
 +			raw_spin_lock_irq(&curr->pi_lock);
  			continue;
  		}
  
+-- 
+2.15.0
+