How to stop all edebug?

[Zhang Haijun]

I edebug(use edebug-defun) some functions in file.el and then close file.el. 
When I open a new file, emacs aborts and show a buffer with edebug error(It 
can’t find the original buffer to debug).

And I event can’t quit emacs because there are functions in kill-emacs-hook  
which try to open file and save data(such as recentf).

Is it possible to cleanup all edebug sessions?