core/vm, internal/ethapi: fail on eth_call when it times out, fixes #19186 (#19737)

core/vm/evm.go

@@ -169,6 +169,11 @@ func (evm *EVM) Cancel() {
 	atomic.StoreInt32(&evm.abort, 1)
 }
 
+// Cancelled returns true if Cancel has been called
+func (evm *EVM) Cancelled() bool {
+	return atomic.LoadInt32(&evm.abort) == 1
+}
+
 // Interpreter returns the current interpreter
 func (evm *EVM) Interpreter() Interpreter {
 	return evm.interpreter

internal/ethapi/api.go

@@ -802,6 +802,10 @@ func DoCall(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumb
 	if err := vmError(); err != nil {
 		return nil, 0, false, err
 	}
+	// If the timer caused an abort, return an appropriate error message
+	if evm.Cancelled() {
+		return nil, 0, false, fmt.Errorf("execution aborted (timeout = %v)", timeout)
+	}
 	return res, gas, failed, err
 }