--- old/src/jdk.management/unix/classes/com/sun/management/internal/OperatingSystemImpl.java	2020-02-11 18:28:44.321632760 +0100
+++ new/src/jdk.management/unix/classes/com/sun/management/internal/OperatingSystemImpl.java	2020-02-11 18:28:44.124632108 +0100
@@ -171,7 +171,7 @@
     }
 
     private boolean isCpuSetSameAsHostCpuSet() {
-        if (containerMetrics != null) {
+        if (containerMetrics != null && containerMetrics.getCpuSetCpus() != null) {
             return containerMetrics.getCpuSetCpus().length == getHostConfiguredCpuCount0();
         }
         return false;