From 332e07f4cafe6da336378f039080ba35feae7c01 Mon Sep 17 00:00:00 2001
From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Tue, 1 Nov 2016 16:08:59 +0800
Subject: [PATCH] os/bluestore: add sanity check when compress_extent_map()

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

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index 23b13bda06c..b437135be5e 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -2072,6 +2072,7 @@ int BlueStore::ExtentMap::compress_extent_map(uint64_t offset, uint64_t length)
       break;
     }
     if (n->logical_offset >= shard_end) {
+      assert(pshard != shards.end());
       ++pshard;
       if (pshard != shards.end()) {
 	shard_end = pshard->offset;
-- 
2.47.3