commit 8f630cca5c36941db1cb48726016bbed80ec1041
Author: Yang Yingliang <yangyingliang@huawei.com>
Date:   Wed Apr 30 15:46:18 2014 +0530

    Fix lll_unlock twice in pthread_cond_broadcast
    
    lll_unlock() will be called again if it goes to "wake_all" in
    pthread_cond_broadcast(). This may make another thread which is
    waiting for lock in pthread_cond_timedwait() unlock.  So there are
    more than one threads get the lock, it will break the shared data.
    
    It's introduced by commit 8313cb997d2d("FUTEX_*_REQUEUE_PI support for
    non-x86 code")

diff --git a/nptl/pthread_cond_broadcast.c b/nptl/pthread_cond_broadcast.c
index ed30e7c..7c6c9ea 100644
--- a/nptl/pthread_cond_broadcast.c
+++ b/nptl/pthread_cond_broadcast.c
@@ -81,6 +81,7 @@ __pthread_cond_broadcast (cond)
 
 wake_all:
       lll_futex_wake (&cond->__data.__futex, INT_MAX, pshared);
+      return 0;
     }
 
   /* We are done.  */