Stop LogStream if there is an error in k8s pod log streaming (#1469)

* Stop LogStream if there is an error in k8s pod log streaming

* Locking stream Stops

* PR comment

runtime/kubernetes/kubernetes.go

@@ -330,6 +330,7 @@ type kubeStream struct {
 	// the k8s log stream
 	stream chan runtime.LogRecord
 	// the stop chan
+	sync.Mutex
 	stop chan bool
 	err  error
 }
@@ -343,6 +344,8 @@ func (k *kubeStream) Chan() chan runtime.LogRecord {
 }
 
 func (k *kubeStream) Stop() error {
+	k.Lock()
+	defer k.Unlock()
 	select {
 	case <-k.stop:
 		return nil

runtime/kubernetes/kubernetes_logs.go

@@ -32,6 +32,7 @@ func (k *klog) podLogStream(podName string, stream *kubeStream) error {
 
 	if err != nil {
 		stream.err = err
+		stream.Stop()
 		return err
 	}