From 91fda076fb6ae70874d458cdbb7c5c213d821c54 Mon Sep 17 00:00:00 2001
From: davidxu <davidxu@FreeBSD.org>
Date: Mon, 20 Feb 2006 09:02:40 +0000
Subject: [PATCH] Read cycle count before sending signal, this fixes a userland
 thread suspension bug.

MFC after: 3 days
---
 lib/libthr/thread/thr_suspend_np.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/libthr/thread/thr_suspend_np.c b/lib/libthr/thread/thr_suspend_np.c
index cc424f91c202..7dbe539330f7 100644
--- a/lib/libthr/thread/thr_suspend_np.c
+++ b/lib/libthr/thread/thr_suspend_np.c
@@ -126,10 +126,10 @@ suspend_common(struct pthread *curthread, struct pthread *thread,
 	while (thread->state != PS_DEAD &&
 	      !(thread->flags & THR_FLAGS_SUSPENDED)) {
 		thread->flags |= THR_FLAGS_NEED_SUSPEND;
+		tmp = thread->cycle;
 		THR_THREAD_UNLOCK(curthread, thread);
 		_thr_send_sig(thread, SIGCANCEL);
 		if (waitok) {
-			tmp = thread->cycle;
 			_thr_umtx_wait(&thread->cycle, tmp, NULL);
 			THR_THREAD_LOCK(curthread, thread);
 		} else {