From: Sage Weil <sage@redhat.com>
Date: Thu, 15 Sep 2016 19:48:07 +0000 (-0400)
Subject: os/memstore: fix bug in BufferlistObject::write
X-Git-Tag: v11.0.1~154^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=07982d5d94e52981bbef3559525812fff58ed427;p=ceph.git

os/memstore: fix bug in BufferlistObject::write

Signed-off-by: Sage Weil <sage@redhat.com>
---

diff --git a/src/os/memstore/MemStore.cc b/src/os/memstore/MemStore.cc
index 29488840f9f3..2910a4986c5a 100644
--- a/src/os/memstore/MemStore.cc
+++ b/src/os/memstore/MemStore.cc
@@ -1496,8 +1496,10 @@ int BufferlistObject::write(uint64_t offset, const bufferlist &src)
   if (get_size() >= offset) {
     newdata.substr_of(data, 0, offset);
   } else {
-    newdata.substr_of(data, 0, get_size());
-    newdata.append(offset - get_size());
+    if (get_size()) {
+      newdata.substr_of(data, 0, get_size());
+    }
+    newdata.append_zero(offset - get_size());
   }
 
   newdata.append(src);