From 20ec25c0ca6736ec073d4ed8b6712b9bf1ddc890 Mon Sep 17 00:00:00 2001
From: Daniel Liu <139250065@qq.com>
Date: Fri, 31 Oct 2025 14:03:06 +0800
Subject: [PATCH] engine_v2: fix data race when initial v2 parameters, close
 XFN-10 (#1617)

---
 consensus/XDPoS/engines/engine_v2/engine.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/consensus/XDPoS/engines/engine_v2/engine.go b/consensus/XDPoS/engines/engine_v2/engine.go
index 3a62b58f6e..21393a1306 100644
--- a/consensus/XDPoS/engines/engine_v2/engine.go
+++ b/consensus/XDPoS/engines/engine_v2/engine.go
@@ -178,6 +178,9 @@ func (x *XDPoS_v2) SignHash(header *types.Header) (hash common.Hash) {
 
 // Initial V2 related parameters
 func (x *XDPoS_v2) Initial(chain consensus.ChainReader, header *types.Header) error {
+	x.lock.Lock()
+	defer x.lock.Unlock()
+
 	return x.initial(chain, header)
 }