diff -r 25abc4a3285c -r 72da4c813e44 hotspot/src/share/vm/oops/instanceKlass.cpp --- a/hotspot/src/share/vm/oops/instanceKlass.cpp Tue Sep 02 09:51:24 2014 -0700 +++ b/hotspot/src/share/vm/oops/instanceKlass.cpp Tue Sep 02 21:27:08 2014 -0400 @@ -460,6 +460,8 @@ oop InstanceKlass::init_lock() const { // return the init lock from the mirror oop lock = java_lang_Class::init_lock(java_mirror()); + // Prevent reordering with any access of initialization state + OrderAccess::loadload(); assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state "only fully initialized state can have a null lock"); return lock;