From 5d5e4200e2f732f67215c2df2c18e9a4371ffceb Mon Sep 17 00:00:00 2001
From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Fri, 5 Feb 2016 17:37:49 +0800
Subject: [PATCH] os/kstore: fix race condition

The get_omap_iterator shall check the existence of onode too,
which may race with the rename method.

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>
---
 src/os/kstore/KStore.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/os/kstore/KStore.cc b/src/os/kstore/KStore.cc
index 50af01eaabbbc..934c702c26c4d 100644
--- a/src/os/kstore/KStore.cc
+++ b/src/os/kstore/KStore.cc
@@ -2134,7 +2134,7 @@ ObjectMap::ObjectMapIterator KStore::get_omap_iterator(
   }
   RWLock::RLocker l(c->lock);
   OnodeRef o = c->get_onode(oid, false);
-  if (!o) {
+  if (!o || !o->exists) {
     dout(10) << __func__ << " " << oid << "doesn't exist" <<dendl;
     return ObjectMap::ObjectMapIterator();
   }
-- 
2.39.5