From 4c8dc88a48363095c220e086336c4d01cc60db3d Mon Sep 17 00:00:00 2001
From: Marius van der Wijden <m.vanderwijden@live.de>
Date: Mon, 17 Jun 2024 09:49:24 +0200
Subject: [PATCH] core/state/snapshot: acquire the lock on release

---
 core/state/snapshot/snapshot.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/state/snapshot/snapshot.go b/core/state/snapshot/snapshot.go
index 89a4c16c20..4eee5d8037 100644
--- a/core/state/snapshot/snapshot.go
+++ b/core/state/snapshot/snapshot.go
@@ -666,6 +666,9 @@ func diffToDisk(bottom *diffLayer) *diskLayer {
 
 // Release releases resources
 func (t *Tree) Release() {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
 	if dl := t.disklayer(); dl != nil {
 		dl.Release()
 	}