src/hotspot/share/runtime/thread.cpp

*** 2279,2289 ****
  
  // 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) {
! 
    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
--- 2279,2290 ----
  
  // 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