--- old/src/hotspot/share/runtime/mutexLocker.cpp	2019-03-11 14:27:16.798354178 +0100
+++ new/src/hotspot/share/runtime/mutexLocker.cpp	2019-03-11 14:27:16.582354181 +0100
@@ -244,7 +244,7 @@
   def(CGCPhaseManager_lock         , PaddedMonitor, leaf,        false, Monitor::_safepoint_check_sometimes);
   def(CodeCache_lock               , PaddedMutex  , special,     true,  Monitor::_safepoint_check_never);
   def(RawMonitor_lock              , PaddedMutex  , special,     true,  Monitor::_safepoint_check_never);
-  def(OopMapCacheAlloc_lock        , PaddedMutex  , leaf,        true,  Monitor::_safepoint_check_always);     // used for oop_map_cache allocation.
+  def(OopMapCacheAlloc_lock        , PaddedMutex  , leaf,        true,  Monitor::_safepoint_check_never);      // used for oop_map_cache allocation.
 
   def(MetaspaceExpand_lock         , PaddedMutex  , leaf-1,      true,  Monitor::_safepoint_check_never);
   def(ClassLoaderDataGraph_lock    , PaddedMutex  , nonleaf,     true,  Monitor::_safepoint_check_always);