src/hotspot/share/runtime/thread.cpp

@@ -2279,11 +2279,12 @@
 
 // Note: this function shouldn't block if it's called in
 // _thread_in_native_trans state (such as from
 // check_special_condition_for_native_trans()).
 void JavaThread::check_and_handle_async_exceptions(bool check_unsafe_error) {
-
+  // May be we are at method entry and requires to save do not unlock flag.
+  UnlockFlagSaver fs(this);
   if (has_last_Java_frame() && has_async_condition()) {
     // If we are at a polling page safepoint (not a poll return)
     // then we must defer async exception because live registers
     // will be clobbered by the exception path. Poll return is
     // ok because the call we a returning from already collides