--- a/src/hotspot/share/runtime/thread.hpp	Tue Nov 19 13:33:09 2019 +0900
+++ b/src/hotspot/share/runtime/thread.hpp	Mon Nov 18 23:41:06 2019 -0500
@@ -729,7 +729,7 @@
 
   bool    on_local_stack(address adr) const {
     // QQQ this has knowledge of direction, ought to be a stack method
-    return (_stack_base >= adr && adr >= stack_end());
+    return (_stack_base > adr && adr >= stack_end());
   }
 
   int     lgrp_id() const        { return _lgrp_id; }