title: how to find a symbol file and tell crash about it
body: <p>I am debugging in issue in the Linux kernel using the crash utility to inspect a kernel crash core. But when I try to inspect contents of a particular instance of struct r5conf, crash tells me it does not know that struct or its layout.</p>
  
  <pre><code>crash&gt; struct r5conf
  struct: invalid data structure reference: r5conf
  </code></pre>
  
  <p>So, how do I tell crash about the layout of this structure?</p>