diff -r 43c4fb8ba96b -r a1eba2e37671 src/hotspot/share/oops/methodData.cpp
--- a/src/hotspot/share/oops/methodData.cpp	Tue Jul 16 08:56:08 2019 +0200
+++ b/src/hotspot/share/oops/methodData.cpp	Fri Sep 27 07:56:02 2019 -0400
@@ -1212,7 +1212,7 @@
 
 // Initialize the MethodData* corresponding to a given method.
 MethodData::MethodData(const methodHandle& method, int size, TRAPS)
-  : _extra_data_lock(Monitor::leaf, "MDO extra data lock"),
+  : _extra_data_lock(Mutex::leaf, "MDO extra data lock"),
     _parameters_type_data_di(parameters_uninitialized) {
   // Set the method back-pointer.
   _method = method();