From 9c77bf04b03ff026bb37212a195070d8983f530d Mon Sep 17 00:00:00 2001
From: Hu Tao <hutao@cn.fujitsu.com>
Date: Fri, 22 Jun 2012 11:26:03 +0800
Subject: [PATCH] fix a bug of ref count in virnetserver.c

The test of ref count is not protected by lock, which is unsafe because
the ref count may have been changed by other threads during the test.

This patch fixes this.
---
 src/rpc/virnetserver.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/rpc/virnetserver.c b/src/rpc/virnetserver.c
index 9d71e53698..247ddd7585 100644
--- a/src/rpc/virnetserver.c
+++ b/src/rpc/virnetserver.c
@@ -759,15 +759,16 @@ void virNetServerQuit(virNetServerPtr srv)
 void virNetServerFree(virNetServerPtr srv)
 {
     int i;
+    int refs;
 
     if (!srv)
         return;
 
     virNetServerLock(srv);
     VIR_DEBUG("srv=%p refs=%d", srv, srv->refs);
-    srv->refs--;
+    refs = --srv->refs;
     virNetServerUnlock(srv);
-    if (srv->refs > 0)
+    if (refs > 0)
         return;
 
     for (i = 0 ; i < srv->nservices ; i++)