From 1e27f7101ed338ede193f23126b4e4fb404676f3 Mon Sep 17 00:00:00 2001
From: moneromooo-monero <moneromooo-monero@users.noreply.github.com>
Date: Sat, 2 Jan 2021 22:18:52 +0000
Subject: [PATCH] blockchain: lock access to m_blocks_hash_of_hashes
it is accessed both when adding and when prevalidating a set
of new hashes from a peer
---
src/cryptonote_core/blockchain.cpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index 03a9ce6d6..8ec624254 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -4728,6 +4728,8 @@ uint64_t Blockchain::prevalidate_block_hashes(uint64_t height, const std::vector
CHECK_AND_ASSERT_MES(weights.empty() || weights.size() == hashes.size(), 0, "Unexpected weights size");
+ CRITICAL_REGION_LOCAL(m_blockchain_lock);
+
// easy case: height >= hashes
if (height >= m_blocks_hash_of_hashes.size() * HASH_OF_HASHES_STEP)
return hashes.size();