From b2ae97892d01468441b8e20367bf941dd5dd1c04 Mon Sep 17 00:00:00 2001
From: Marius van der Wijden <m.vanderwijden@live.de>
Date: Wed, 26 Jun 2024 11:12:39 +0200
Subject: [PATCH] core/vm: check for returnStack overflow in opCallf

---
 core/vm/eips.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/vm/eips.go b/core/vm/eips.go
index dcb4943669..022abda7a2 100644
--- a/core/vm/eips.go
+++ b/core/vm/eips.go
@@ -823,7 +823,7 @@ func opCallf(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]by
 	if scope.Stack.len()+int(typ.MaxStackHeight) >= 1024 {
 		return nil, fmt.Errorf("stack overflow")
 	}
-	if len(scope.ReturnStack) >= 1024 {
+	if len(scope.ReturnStack) > 1024 {
 		return nil, fmt.Errorf("return stack overflow")
 	}
 	retCtx := &ReturnContext{