diff --git a/etcdserver/etcdserverpb/raft_internal_stringer_test.go b/etcdserver/etcdserverpb/raft_internal_stringer_test.go
new file mode 100644
index 00000000000..49e38e77c6d
--- /dev/null
+++ b/etcdserver/etcdserverpb/raft_internal_stringer_test.go
@@ -0,0 +1,31 @@
+// Copyright 2020 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package etcdserverpb_test
+
+import (
+	"testing"
+
+	pb "go.etcd.io/etcd/v3/etcdserver/etcdserverpb"
+)
+
+// TestInvalidGoYypeIntPanic tests conditions that caused
+// panic: invalid Go type int for field k8s_io.kubernetes.vendor.go_etcd_io.etcd.etcdserver.etcdserverpb.loggablePutRequest.value_size
+// See https://github.com/kubernetes/kubernetes/issues/91937 for more details
+func TestInvalidGoTypeIntPanic(t *testing.T) {
+	result := pb.NewLoggablePutRequest(&pb.PutRequest{}).String()
+	if result != "" {
+		t.Errorf("Got result: %s, expected empty string", result)
+	}
+}