src/hotspot/share/runtime/vframe.inline.hpp

@@ -120,10 +120,17 @@
      return;
    }
  
    if (thread->is_vthread_mounted()) {
      _frame = vthread_carrier ? _thread->carrier_last_frame(&_reg_map) : _thread->vthread_last_frame();
+     if (Continuation::is_continuation_enterSpecial(_frame)) {
+       // This can happen when calling async_get_stack_trace() and catching the target
+       // vthread at the JRT_BLOCK_END in freeze_internal() or when posting the Monitor
+       // Waited event after target vthread was preempted. Since all continuation frames
+       // are freezed we get the top frame from the stackChunk instead.
+       _frame = Continuation::last_frame(java_lang_VirtualThread::continuation(_thread->vthread()), &_reg_map);
+     }
    } else {
      _frame = _thread->last_frame();
    }
  
    _cont_entry = _thread->last_continuation();