From 6b3f9d3d1ada3217b7401925bb86b3399defb235 Mon Sep 17 00:00:00 2001
From: David Holmes <dholmes@openjdk.org>
Date: Thu, 13 Aug 2015 22:08:40 -0400
Subject: [PATCH] 8029453:
 java/util/concurrent/locks/ReentrantLock/TimeoutLockLoops.java failed by
 timeout

Reviewed-by: bdelsart, ddmitriev, dcubed
---
 hotspot/src/os/linux/vm/os_linux.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hotspot/src/os/linux/vm/os_linux.cpp b/hotspot/src/os/linux/vm/os_linux.cpp
index bd4aa14b32f..769665642d9 100644
--- a/hotspot/src/os/linux/vm/os_linux.cpp
+++ b/hotspot/src/os/linux/vm/os_linux.cpp
@@ -5785,9 +5785,11 @@ void Parker::unpark() {
         status = pthread_mutex_unlock(_mutex);
         assert(status == 0, "invariant");
       } else {
+        // must capture correct index before unlocking
+        int index = _cur_index;
         status = pthread_mutex_unlock(_mutex);
         assert(status == 0, "invariant");
-        status = pthread_cond_signal(&_cond[_cur_index]);
+        status = pthread_cond_signal(&_cond[index]);
         assert(status == 0, "invariant");
       }
     } else {