From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Thu, 23 Jun 2016 12:09:01 +0000 (+0800)
Subject: os/bluestore: add sanity check for underflow
X-Git-Tag: v11.0.0~68^2~1
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=86944f0ea1608b8a71a9d7ed95475405b05e3f45;p=ceph-ci.git

os/bluestore: add sanity check for underflow

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>
---

diff --git a/src/os/bluestore/BlueStore.h b/src/os/bluestore/BlueStore.h
index 2df10447646..1ac611b0f73 100644
--- a/src/os/bluestore/BlueStore.h
+++ b/src/os/bluestore/BlueStore.h
@@ -659,6 +659,7 @@ public:
 
     void _rm_buffer(Buffer *b) override {
       if (!b->is_empty()) {
+        assert(buffer_bytes >= b->length);
 	buffer_bytes -= b->length;
       }
       switch (b->cache_private) {