--- old/src/hotspot/share/runtime/globals.hpp	2019-08-28 15:03:59.838957391 -0400
+++ new/src/hotspot/share/runtime/globals.hpp	2019-08-28 15:03:59.634957398 -0400
@@ -726,6 +726,9 @@
           "MonitorUsedDeflationThreshold is exceeded (0 is off).")          \
           range(0, max_jint)                                                \
                                                                             \
+  diagnostic(bool, CheckMonitorLists, false,                                \
+          "Sanity check the lock free ObjectMonitor lists.")                \
+                                                                            \
   experimental(intx, MonitorUsedDeflationThreshold, 90,                     \
           "Percentage of used monitors before triggering deflation (0 is "  \
           "off). The check is performed on GuaranteedSafepointInterval "    \