From dfed983f19e7b61da243362f00fa3a14c92dae45 Mon Sep 17 00:00:00 2001
From: Matt Corallo <git@bluematt.me>
Date: Fri, 25 Nov 2016 19:29:55 -0800
Subject: [PATCH] Fix unlocked access to vNodes.size()

---
 src/net.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/net.cpp b/src/net.cpp
index 15c4514f1..233c0fbc8 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -1103,8 +1103,13 @@ void CConnman::ThreadSocketHandler()
                 }
             }
         }
-        if(vNodes.size() != nPrevNodeCount) {
-            nPrevNodeCount = vNodes.size();
+        size_t vNodesSize;
+        {
+            LOCK(cs_vNodes);
+            vNodesSize = vNodes.size();
+        }
+        if(vNodesSize != nPrevNodeCount) {
+            nPrevNodeCount = vNodesSize;
             if(clientInterface)
                 clientInterface->NotifyNumConnectionsChanged(nPrevNodeCount);
         }