diff --git a/pkg/util/runtime/cpu_linux.go b/pkg/util/runtime/cpu_linux.go
index c97184bcf..9cb260c4b 100644
--- a/pkg/util/runtime/cpu_linux.go
+++ b/pkg/util/runtime/cpu_linux.go
@@ -64,14 +64,13 @@ func GetCgroupVersion() int64 {
 	// /sys/fs/cgroup/cgroup.controllers will not exist with cgroupsv1
 	if _, err := os.Stat("/sys/fs/cgroup/cgroup.controllers"); err == nil {
 		return 2
-	} else {
-		return 1
 	}
+
+	return 1
 }
 
-func readCgroup2FileToInt64Tuple(cgroupFile string) (int64, int64) {
-	contents, err := os.ReadFile(filepath.Join("/sys/fs/cgroup/", cgroupFile))
-
+func readCgroup2FileToInt64Tuple(cgroupFile string) (quota, period int64) {
+	contents, err := os.ReadFile(filepath.Join(string(os.PathSeparator), "sys", "fs", "cgroup", cgroupFile))
 	if err != nil {
 		return -1, -1
 	}
@@ -87,7 +86,6 @@ func readCgroup2FileToInt64Tuple(cgroupFile string) (int64, int64) {
 	}
 
 	cpuQuota, err := strconv.ParseInt(values[0], 10, 64)
-
 	if err != nil {
 		return -1, -1
 	}
@@ -97,7 +95,6 @@ func readCgroup2FileToInt64Tuple(cgroupFile string) (int64, int64) {
 	}
 
 	cpuPeriod, err := strconv.ParseInt(values[1], 10, 64)
-
 	if err != nil {
 		return -1, -1
 	}
diff --git a/test/e2e/cgroups/cgroups.go b/test/e2e/cgroups/cgroups.go
index 6ad8558df..e01f683e4 100644
--- a/test/e2e/cgroups/cgroups.go
+++ b/test/e2e/cgroups/cgroups.go
@@ -19,6 +19,7 @@ package cgroups
 import (
 	"log"
 	"os"
+	"path/filepath"
 
 	"github.com/onsi/ginkgo/v2"
 	"github.com/stretchr/testify/assert"
@@ -26,7 +27,6 @@ import (
 	"k8s.io/ingress-nginx/test/e2e/framework"
 
 	"k8s.io/ingress-nginx/pkg/util/runtime"
-	"path/filepath"
 
 	libcontainercgroups "github.com/opencontainers/runc/libcontainer/cgroups"
 )
@@ -46,22 +46,34 @@ var _ = framework.IngressNginxDescribeSerial("[CGroups] cgroups", func() {
 		}
 
 		quotaFile, err := os.Create(filepath.Join(cgroupPath, "cpu.cfs_quota_us"))
-
 		if err != nil {
 			log.Fatal(err)
 		}
 
 		periodFile, err := os.Create(filepath.Join(cgroupPath, "cpu.cfs_period_us"))
-
 		if err != nil {
 			log.Fatal(err)
 		}
 
-		quotaFile.WriteString("4")
-		quotaFile.Sync()
+		_, err = quotaFile.WriteString("4")
+		if err != nil {
+			log.Fatal(err)
+		}
 
-		periodFile.WriteString("2")
-		periodFile.Sync()
+		err = quotaFile.Sync()
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		_, err = periodFile.WriteString("2")
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		err = periodFile.Sync()
+		if err != nil {
+			log.Fatal(err)
+		}
 
 		assert.Equal(ginkgo.GinkgoT(), runtime.GetCgroupVersion(), int64(1))
 		assert.Equal(ginkgo.GinkgoT(), runtime.NumCPU(), 2)
@@ -75,15 +87,25 @@ var _ = framework.IngressNginxDescribeSerial("[CGroups] cgroups", func() {
 			log.Fatal(err)
 		}
 
-		os.Create("/sys/fs/cgroup/cgroup.controllers")
-		file, err := os.Create("/sys/fs/cgroup/cpu.max")
-
+		_, err := os.Create("/sys/fs/cgroup/cgroup.controllers")
 		if err != nil {
 			log.Fatal(err)
 		}
 
-		file.WriteString("4 2")
-		file.Sync()
+		file, err := os.Create("/sys/fs/cgroup/cpu.max")
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		_, err = file.WriteString("4 2")
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		err = file.Sync()
+		if err != nil {
+			log.Fatal(err)
+		}
 
 		assert.Equal(ginkgo.GinkgoT(), runtime.GetCgroupVersion(), int64(2))
 		assert.Equal(ginkgo.GinkgoT(), runtime.NumCPU(), 2)