From 8f630cca5c36941db1cb48726016bbed80ec1041 Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Wed, 30 Apr 2014 15:46:18 +0530 Subject: 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") --- nptl/pthread_cond_broadcast.c | 1 + 1 file changed, 1 insertion(+) (limited to 'nptl/pthread_cond_broadcast.c') diff --git a/nptl/pthread_cond_broadcast.c b/nptl/pthread_cond_broadcast.c index ed30e7c60b..7c6c9ea9a2 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. */ -- cgit 1.4.1