From 8a5dfeefad824262d337876d8acfe4b133fe2e12 Mon Sep 17 00:00:00 2001
From: Wesley Shillingford <wezrule@hotmail.com>
Date: Mon, 1 Mar 2021 15:07:52 +0000
Subject: [PATCH] TSAN error in confirmation height unbounded (#3106)

---
 nano/node/confirmation_height_unbounded.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/nano/node/confirmation_height_unbounded.cpp b/nano/node/confirmation_height_unbounded.cpp
index b9cf5d420..ee9d327ac 100644
--- a/nano/node/confirmation_height_unbounded.cpp
+++ b/nano/node/confirmation_height_unbounded.cpp
@@ -65,6 +65,7 @@ void nano::confirmation_height_unbounded::process ()
 			debug_assert (current == original_block->hash ());
 			// This is the original block passed so can use it directly
 			block = original_block;
+			nano::lock_guard<std::mutex> guard (block_cache_mutex);
 			block_cache[original_block->hash ()] = original_block;
 		}
 		else
@@ -206,6 +207,7 @@ void nano::confirmation_height_unbounded::collect_unconfirmed_receive_and_source
 		{
 			debug_assert (hash == hash_a);
 			block = block_a;
+			nano::lock_guard<std::mutex> guard (block_cache_mutex);
 			block_cache[hash] = block_a;
 		}
 		else