diff --git a/fs/fs.go b/fs/fs.go
index 5e57a983907..ec4e920dc23 100644
--- a/fs/fs.go
+++ b/fs/fs.go
@@ -470,6 +470,7 @@ func getDiskStatsMap(diskStatsFile string) (map[string]DiskStats, error) {
 		buf := make([]byte, bufSize)
 		count, err := file.Read(buf)
 		buf = append(leftover, buf...)
+		buf, _ = bytes.CutSuffix(buf, []byte("\x00"))
 		klog.V(10).Infof("read %d bytes in getDiskStatsMap()", count)
 		if err == io.EOF {
 			break