diff --git a/test/e2e/common/configmap_volume.go b/test/e2e/common/configmap_volume.go
index 32e42a23166..6e71ef33511 100644
--- a/test/e2e/common/configmap_volume.go
+++ b/test/e2e/common/configmap_volume.go
@@ -18,7 +18,6 @@ package common
 
 import (
 	"fmt"
-	"os"
 	"path"
 
 	. "github.com/onsi/ginkgo"
@@ -622,17 +621,14 @@ func doConfigMapE2EWithoutMappings(f *framework.Framework, uid, fsGroup int64, d
 
 	if defaultMode != nil {
 		pod.Spec.Volumes[0].VolumeSource.ConfigMap.DefaultMode = defaultMode
-	} else {
-		mode := int32(0644)
-		defaultMode = &mode
 	}
 
-	modeString := fmt.Sprintf("%v", os.FileMode(*defaultMode))
+	fileModeRegexp := framework.GetFileModeRegex("/etc/configmap-volume/data-1", defaultMode)
 	output := []string{
 		"content of file \"/etc/configmap-volume/data-1\": value-1",
-		"mode of file \"/etc/configmap-volume/data-1\": " + modeString,
+		fileModeRegexp,
 	}
-	f.TestContainerOutput("consume configMaps", pod, 0, output)
+	f.TestContainerOutputRegexp("consume configMaps", pod, 0, output)
 }
 
 func doConfigMapE2EWithMappings(f *framework.Framework, uid, fsGroup int64, itemMode *int32) {
@@ -708,9 +704,6 @@ func doConfigMapE2EWithMappings(f *framework.Framework, uid, fsGroup int64, item
 
 	if itemMode != nil {
 		pod.Spec.Volumes[0].VolumeSource.ConfigMap.Items[0].Mode = itemMode
-	} else {
-		mode := int32(0644)
-		itemMode = &mode
 	}
 
 	// Just check file mode if fsGroup is not set. If fsGroup is set, the
@@ -719,8 +712,8 @@ func doConfigMapE2EWithMappings(f *framework.Framework, uid, fsGroup int64, item
 		"content of file \"/etc/configmap-volume/path/to/data-2\": value-2",
 	}
 	if fsGroup == 0 {
-		modeString := fmt.Sprintf("%v", os.FileMode(*itemMode))
-		output = append(output, "mode of file \"/etc/configmap-volume/path/to/data-2\": "+modeString)
+		fileModeRegexp := framework.GetFileModeRegex("/etc/configmap-volume/path/to/data-2", itemMode)
+		output = append(output, fileModeRegexp)
 	}
-	f.TestContainerOutput("consume configMaps", pod, 0, output)
+	f.TestContainerOutputRegexp("consume configMaps", pod, 0, output)
 }
diff --git a/test/e2e/common/projected_configmap.go b/test/e2e/common/projected_configmap.go
index 5a8fda22966..6339322a7b4 100644
--- a/test/e2e/common/projected_configmap.go
+++ b/test/e2e/common/projected_configmap.go
@@ -18,7 +18,6 @@ package common
 
 import (
 	"fmt"
-	"os"
 	"path"
 
 	"k8s.io/api/core/v1"
@@ -554,17 +553,14 @@ func doProjectedConfigMapE2EWithoutMappings(f *framework.Framework, uid, fsGroup
 	if defaultMode != nil {
 		//pod.Spec.Volumes[0].VolumeSource.Projected.Sources[0].ConfigMap.DefaultMode = defaultMode
 		pod.Spec.Volumes[0].VolumeSource.Projected.DefaultMode = defaultMode
-	} else {
-		mode := int32(0644)
-		defaultMode = &mode
 	}
 
-	modeString := fmt.Sprintf("%v", os.FileMode(*defaultMode))
+	fileModeRegexp := framework.GetFileModeRegex("/etc/projected-configmap-volume/data-1", defaultMode)
 	output := []string{
 		"content of file \"/etc/projected-configmap-volume/data-1\": value-1",
-		"mode of file \"/etc/projected-configmap-volume/data-1\": " + modeString,
+		fileModeRegexp,
 	}
-	f.TestContainerOutput("consume configMaps", pod, 0, output)
+	f.TestContainerOutputRegexp("consume configMaps", pod, 0, output)
 }
 
 func doProjectedConfigMapE2EWithMappings(f *framework.Framework, uid, fsGroup int64, itemMode *int32) {
@@ -645,9 +641,6 @@ func doProjectedConfigMapE2EWithMappings(f *framework.Framework, uid, fsGroup in
 	if itemMode != nil {
 		//pod.Spec.Volumes[0].VolumeSource.ConfigMap.Items[0].Mode = itemMode
 		pod.Spec.Volumes[0].VolumeSource.Projected.DefaultMode = itemMode
-	} else {
-		mode := int32(0644)
-		itemMode = &mode
 	}
 
 	// Just check file mode if fsGroup is not set. If fsGroup is set, the
@@ -656,8 +649,8 @@ func doProjectedConfigMapE2EWithMappings(f *framework.Framework, uid, fsGroup in
 		"content of file \"/etc/projected-configmap-volume/path/to/data-2\": value-2",
 	}
 	if fsGroup == 0 {
-		modeString := fmt.Sprintf("%v", os.FileMode(*itemMode))
-		output = append(output, "mode of file \"/etc/projected-configmap-volume/path/to/data-2\": "+modeString)
+		fileModeRegexp := framework.GetFileModeRegex("/etc/projected-configmap-volume/path/to/data-2", itemMode)
+		output = append(output, fileModeRegexp)
 	}
-	f.TestContainerOutput("consume configMaps", pod, 0, output)
+	f.TestContainerOutputRegexp("consume configMaps", pod, 0, output)
 }
diff --git a/test/e2e/common/projected_secret.go b/test/e2e/common/projected_secret.go
index 9b0bb49ec80..09cee17c93b 100644
--- a/test/e2e/common/projected_secret.go
+++ b/test/e2e/common/projected_secret.go
@@ -18,7 +18,6 @@ package common
 
 import (
 	"fmt"
-	"os"
 	"path"
 
 	"k8s.io/api/core/v1"
@@ -193,9 +192,10 @@ var _ = Describe("[sig-storage] Projected secret", func() {
 			},
 		}
 
-		f.TestContainerOutput("consume secrets", pod, 0, []string{
+		fileModeRegexp := framework.GetFileModeRegex("/etc/projected-secret-volume/data-1", nil)
+		f.TestContainerOutputRegexp("consume secrets", pod, 0, []string{
 			"content of file \"/etc/projected-secret-volume/data-1\": value-1",
-			"mode of file \"/etc/projected-secret-volume/data-1\": -rw-r--r--",
+			fileModeRegexp,
 		})
 	})
 
@@ -461,9 +461,6 @@ func doProjectedSecretE2EWithoutMapping(f *framework.Framework, defaultMode *int
 	if defaultMode != nil {
 		//pod.Spec.Volumes[0].VolumeSource.Projected.Sources[0].Secret.DefaultMode = defaultMode
 		pod.Spec.Volumes[0].VolumeSource.Projected.DefaultMode = defaultMode
-	} else {
-		mode := int32(0644)
-		defaultMode = &mode
 	}
 
 	if fsGroup != nil || uid != nil {
@@ -473,13 +470,13 @@ func doProjectedSecretE2EWithoutMapping(f *framework.Framework, defaultMode *int
 		}
 	}
 
-	modeString := fmt.Sprintf("%v", os.FileMode(*defaultMode))
+	fileModeRegexp := framework.GetFileModeRegex("/etc/projected-secret-volume/data-1", defaultMode)
 	expectedOutput := []string{
 		"content of file \"/etc/projected-secret-volume/data-1\": value-1",
-		"mode of file \"/etc/projected-secret-volume/data-1\": " + modeString,
+		fileModeRegexp,
 	}
 
-	f.TestContainerOutput("consume secrets", pod, 0, expectedOutput)
+	f.TestContainerOutputRegexp("consume secrets", pod, 0, expectedOutput)
 }
 
 func doProjectedSecretE2EWithMapping(f *framework.Framework, mode *int32) {
@@ -547,16 +544,13 @@ func doProjectedSecretE2EWithMapping(f *framework.Framework, mode *int32) {
 	if mode != nil {
 		//pod.Spec.Volumes[0].VolumeSource.Projected.Sources[0].Secret.Items[0].Mode = mode
 		pod.Spec.Volumes[0].VolumeSource.Projected.DefaultMode = mode
-	} else {
-		defaultItemMode := int32(0644)
-		mode = &defaultItemMode
 	}
 
-	modeString := fmt.Sprintf("%v", os.FileMode(*mode))
+	fileModeRegexp := framework.GetFileModeRegex("/etc/projected-secret-volume/new-path-data-1", mode)
 	expectedOutput := []string{
 		"content of file \"/etc/projected-secret-volume/new-path-data-1\": value-1",
-		"mode of file \"/etc/projected-secret-volume/new-path-data-1\": " + modeString,
+		fileModeRegexp,
 	}
 
-	f.TestContainerOutput("consume secrets", pod, 0, expectedOutput)
+	f.TestContainerOutputRegexp("consume secrets", pod, 0, expectedOutput)
 }
diff --git a/test/e2e/common/secrets_volume.go b/test/e2e/common/secrets_volume.go
index 432cd21afd5..75f3319d730 100644
--- a/test/e2e/common/secrets_volume.go
+++ b/test/e2e/common/secrets_volume.go
@@ -18,7 +18,6 @@ package common
 
 import (
 	"fmt"
-	"os"
 	"path"
 
 	"k8s.io/api/core/v1"
@@ -182,9 +181,10 @@ var _ = Describe("[sig-storage] Secrets", func() {
 			},
 		}
 
-		f.TestContainerOutput("consume secrets", pod, 0, []string{
+		fileModeRegexp := framework.GetFileModeRegex("/etc/secret-volume/data-1", nil)
+		f.TestContainerOutputRegexp("consume secrets", pod, 0, []string{
 			"content of file \"/etc/secret-volume/data-1\": value-1",
-			"mode of file \"/etc/secret-volume/data-1\": -rw-r--r--",
+			fileModeRegexp,
 		})
 	})
 
@@ -431,9 +431,6 @@ func doSecretE2EWithoutMapping(f *framework.Framework, defaultMode *int32, secre
 
 	if defaultMode != nil {
 		pod.Spec.Volumes[0].VolumeSource.Secret.DefaultMode = defaultMode
-	} else {
-		mode := int32(0644)
-		defaultMode = &mode
 	}
 
 	if fsGroup != nil || uid != nil {
@@ -443,13 +440,13 @@ func doSecretE2EWithoutMapping(f *framework.Framework, defaultMode *int32, secre
 		}
 	}
 
-	modeString := fmt.Sprintf("%v", os.FileMode(*defaultMode))
+	fileModeRegexp := framework.GetFileModeRegex("/etc/secret-volume/data-1", defaultMode)
 	expectedOutput := []string{
 		"content of file \"/etc/secret-volume/data-1\": value-1",
-		"mode of file \"/etc/secret-volume/data-1\": " + modeString,
+		fileModeRegexp,
 	}
 
-	f.TestContainerOutput("consume secrets", pod, 0, expectedOutput)
+	f.TestContainerOutputRegexp("consume secrets", pod, 0, expectedOutput)
 }
 
 func doSecretE2EWithMapping(f *framework.Framework, mode *int32) {
@@ -508,16 +505,13 @@ func doSecretE2EWithMapping(f *framework.Framework, mode *int32) {
 
 	if mode != nil {
 		pod.Spec.Volumes[0].VolumeSource.Secret.Items[0].Mode = mode
-	} else {
-		defaultItemMode := int32(0644)
-		mode = &defaultItemMode
 	}
 
-	modeString := fmt.Sprintf("%v", os.FileMode(*mode))
+	fileModeRegexp := framework.GetFileModeRegex("/etc/secret-volume/new-path-data-1", mode)
 	expectedOutput := []string{
 		"content of file \"/etc/secret-volume/new-path-data-1\": value-1",
-		"mode of file \"/etc/secret-volume/new-path-data-1\": " + modeString,
+		fileModeRegexp,
 	}
 
-	f.TestContainerOutput("consume secrets", pod, 0, expectedOutput)
+	f.TestContainerOutputRegexp("consume secrets", pod, 0, expectedOutput)
 }
diff --git a/test/e2e/framework/util.go b/test/e2e/framework/util.go
index a6e3aa207e9..aeed6fa4139 100644
--- a/test/e2e/framework/util.go
+++ b/test/e2e/framework/util.go
@@ -5252,3 +5252,24 @@ func WaitForNodeHasTaintOrNot(c clientset.Interface, nodeName string, taint *v1.
 	}
 	return nil
 }
+
+// GetFileModeRegex returns a file mode related regex which should be matched by the mounttest pods' output.
+// If the given mask is nil, then the regex will contain the default OS file modes, which are 0644 for Linux and 0775 for Windows.
+func GetFileModeRegex(filePath string, mask *int32) string {
+	var (
+		linuxMask   int32
+		windowsMask int32
+	)
+	if mask == nil {
+		linuxMask = int32(0644)
+		windowsMask = int32(0775)
+	} else {
+		linuxMask = *mask
+		windowsMask = *mask
+	}
+
+	linuxOutput := fmt.Sprintf("mode of file \"%s\": %v", filePath, os.FileMode(linuxMask))
+	windowsOutput := fmt.Sprintf("mode of Windows file \"%v\": %s", filePath, os.FileMode(windowsMask))
+
+	return fmt.Sprintf("(%s|%s)", linuxOutput, windowsOutput)
+}