From 8ebb3901ccdc583134ced9dabd23b80c7a8033e2 Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@redhat.com>
Date: Fri, 18 Dec 2015 17:41:01 -0500
Subject: [PATCH] os/bluestore/BlueStore: only allow clone if hash matches

Signed-off-by: Sage Weil <sage@redhat.com>
---
 src/os/bluestore/BlueStore.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index 0302b7d04f97..5522f317e23a 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -5477,6 +5477,11 @@ int BlueStore::_clone(TransContext *txc,
   dout(15) << __func__ << " " << c->cid << " " << old_oid << " -> "
 	   << new_oid << dendl;
   int r = 0;
+  if (old_oid.hobj.get_hash() != new_oid.hobj.get_hash()) {
+    derr << __func__ << " mismatched hash on " << old_oid << " and " << new_oid
+	 << dendl;
+    return -EINVAL;
+  }
 
   RWLock::WLocker l(c->lock);
   bufferlist bl;
-- 
2.47.3