From 9c804eddc32149807d589037b76e602a552859e4 Mon Sep 17 00:00:00 2001
From: Daniel Liu <139250065@qq.com>
Date: Wed, 25 Feb 2026 15:43:10 +0800
Subject: [PATCH] core/state: clear journal entries on reset

journal.reset() reslices j.entries to length 0 but does not clear the underlying array. Since j.entries holds interface values that can reference large objects (e.g., codeChange.prevCode), this can retain memory across transactions/blocks compared to the previous newJournal() behavior.
---
 core/state/journal.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core/state/journal.go b/core/state/journal.go
index a79bd7331a..17fc4e9a79 100644
--- a/core/state/journal.go
+++ b/core/state/journal.go
@@ -68,6 +68,7 @@ func newJournal() *journal {
 // It is semantically similar to calling 'newJournal', but the underlying slices
 // can be reused.
 func (j *journal) reset() {
+	clear(j.entries)
 	j.entries = j.entries[:0]
 	j.validRevisions = j.validRevisions[:0]
 	clear(j.dirties)