--- old/src/hotspot/share/runtime/vmStructs.cpp	2019-08-28 15:04:04.950957213 -0400
+++ new/src/hotspot/share/runtime/vmStructs.cpp	2019-08-28 15:04:04.770957219 -0400
@@ -910,7 +910,7 @@
   volatile_nonstatic_field(ObjectMonitor,      _header,                                       markWord)                              \
   unchecked_nonstatic_field(ObjectMonitor,     _object,                                       sizeof(void *)) /* NOTE: no type */    \
   unchecked_nonstatic_field(ObjectMonitor,     _owner,                                        sizeof(void *)) /* NOTE: no type */    \
-  nonstatic_field(ObjectMonitor,               _next_om,                                      ObjectMonitor*)                        \
+  volatile_nonstatic_field(ObjectMonitor,      _next_om,                                      ObjectMonitor*)                        \
   volatile_nonstatic_field(BasicLock,          _displaced_header,                             markWord)                              \
   volatile_nonstatic_field(ObjectMonitor,      _contentions,                                  jint)                                  \
   volatile_nonstatic_field(ObjectMonitor,      _waiters,                                      jint)                                  \