--- old/src/hotspot/share/classfile/moduleEntry.cpp	2018-10-31 07:14:36.155840658 -0400
+++ new/src/hotspot/share/classfile/moduleEntry.cpp	2018-10-31 07:14:35.875840645 -0400
@@ -204,7 +204,7 @@
 
 // Purge dead module entries out of reads list.
 void ModuleEntry::purge_reads() {
-  assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
+  assert_locked_or_safepoint(Module_lock);
 
   if (_must_walk_reads && has_reads_list()) {
     // This module's _must_walk_reads flag will be reset based
@@ -245,7 +245,6 @@
 }
 
 void ModuleEntry::delete_reads() {
-  assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
   delete _reads;
   _reads = NULL;
 }
@@ -319,8 +318,6 @@
 }
 
 ModuleEntryTable::~ModuleEntryTable() {
-  assert_locked_or_safepoint(Module_lock);
-
   // Walk through all buckets and all entries in each bucket,
   // freeing each entry.
   for (int i = 0; i < table_size(); ++i) {