Merge pull request #12943 from machacekondra/nil_fix

Fix nil pointer dereference for configmap optional

pkg/specgen/generate/kube/volume.go

@@ -122,7 +122,7 @@ func VolumeFromConfigMap(configMapVolumeSource *v1.ConfigMapVolumeSource, config
 
 	if configMap == nil {
 		// If the volumeSource was optional, move on even if a matching configmap wasn't found
-		if *configMapVolumeSource.Optional {
+		if configMapVolumeSource.Optional != nil && *configMapVolumeSource.Optional {
 			kv.Source = configMapVolumeSource.Name
 			kv.Optional = *configMapVolumeSource.Optional
 			return kv, nil

test/e2e/play_kube_test.go

@@ -78,6 +78,25 @@ spec:
         - 24h
 status: {}
 `
+
+var podWithoutConfigMapDefined = `
+apiVersion: v1
+kind: Pod
+metadata:
+  name: testpod1
+spec:
+  containers:
+    - name: alpine
+      image: quay.io/libpod/alpine:latest
+      volumeMounts:
+        - name: mycm
+          mountPath: /mycm
+  volumes:
+    - name: mycm
+      configMap:
+        name: mycm
+`
+
 var sharedNamespacePodYaml = `
 apiVersion: v1
 kind: Pod
@@ -1235,6 +1254,16 @@ var _ = Describe("Podman play kube", func() {
 		}
 	})
 
+	It("podman play kube with non-existing configmap", func() {
+		err := writeYaml(podWithoutConfigMapDefined, kubeYaml)
+		Expect(err).To(BeNil())
+
+		kube := podmanTest.Podman([]string{"play", "kube", kubeYaml})
+		kube.WaitWithDefaultTimeout()
+		Expect(kube).Should(Exit(125))
+		Expect(kube.ErrorToString()).To(ContainSubstring("failed to create volume \"mycm\": no such ConfigMap \"mycm\""))
+	})
+
 	It("podman play kube test HostAliases with --no-hosts", func() {
 		pod := getPod(withHostAliases("192.168.1.2", []string{
 			"test1.podman.io",