From 003cd60cc3697df25bb9dfa0bae0616a462af7ab Mon Sep 17 00:00:00 2001
From: Matt Corallo <git@bluematt.me>
Date: Fri, 20 Jan 2017 18:10:48 -0500
Subject: [PATCH] Add missing mempool lock for CalculateMemPoolAncestors

---
 src/txmempool.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index 5b085f492..34ca3baca 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -173,6 +173,8 @@ void CTxMemPool::UpdateTransactionsFromBlock(const std::vector<uint256> &vHashes
 
 bool CTxMemPool::CalculateMemPoolAncestors(const CTxMemPoolEntry &entry, setEntries &setAncestors, uint64_t limitAncestorCount, uint64_t limitAncestorSize, uint64_t limitDescendantCount, uint64_t limitDescendantSize, std::string &errString, bool fSearchForParents /* = true */) const
 {
+    LOCK(cs);
+
     setEntries parentHashes;
     const CTransaction &tx = entry.GetTx();