How to get user level stack trace of an application from system crash

Hi, I have an application which traps file events using fanotify, process these events and gives a verdict to fanotify whether access to a file is allowed or not. However, in some cases the verdict does not reach fanotify and system freezes. In such a case I just have system crash to analyze the issue. My question is that is it possible to get a user level stack trace of an application using system crash ? Thanks and regards, Shailendra