os/bluestore: narrow boundary check for fiemap

By including off-by-one. Signed-off-by: xie xingguo <[email protected]>
att · Nov 5, 2016 · 4ebc5ab · 4ebc5ab
1 parent d95d522
commit 4ebc5ab
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
@@ -5379,7 +5379,7 @@ int BlueStore::fiemap(
 	     << " size 0x" << o->onode.size << std::dec << dendl;
 
     boost::intrusive::set<Extent>::iterator ep, eend;
-    if (offset > o->onode.size)
+    if (offset >= o->onode.size)
       goto out;
 
     if (offset + length > o->onode.size) {