From 9b3e43c3270877f905efc375ddd6f2cf7f64f460 Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@symas.com>
Date: Sat, 19 Mar 2016 12:57:47 +0000
Subject: [PATCH] Fix issue #706

---
 src/cryptonote_core/blockchain.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index f540697d..8b7f298e 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -2798,6 +2798,7 @@ void Blockchain::check_against_checkpoints(const checkpoints& points, bool enfor
 {
   const auto& pts = points.get_points();
 
+  CRITICAL_REGION_LOCAL(m_blockchain_lock);
   m_db->batch_start();
   for (const auto& pt : pts)
   {