--- old/src/hotspot/share/gc/g1/g1HeapVerifier.cpp	2020-06-08 15:04:00.479203478 -0700
+++ new/src/hotspot/share/gc/g1/g1HeapVerifier.cpp	2020-06-08 15:04:00.343198359 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -326,7 +326,7 @@
   if (cl.has_holes()) {
     log_warning(gc, verify)("All free regions should be at the top end of the heap, but"
                             " we found holes. This is probably caused by (unmovable) humongous"
-                            " allocations, and may lead to fragmentation while"
+                            " allocations or active GCLocker, and may lead to fragmentation while"
                             " writing archive heap memory regions.");
   }
   if (cl.has_humongous()) {
@@ -334,7 +334,6 @@
                             " may lead to fragmentation while"
                             " writing archive heap memory regions.");
   }
-  assert(!cl.has_unexpected_holes(), "all holes should have been caused by humongous regions");
 }
 
 class VerifyArchivePointerRegionClosure: public HeapRegionClosure {