title: kvm: module verification failed: signature and/or required key missing - tainting kernel
body: <p>I'm using <code>Ubuntu 14.04 LTS</code> and kernel version <code>3.13.11.4</code>. <br/> I'm trying to load patched KVM modules <code>kvm</code> and <code>kvm-intel</code> and I'm getting the following errors <br/></p>
  
  <blockquote>
    <p><code>kvm: module verification failed: signature and/or  required key missing - tainting kernel</code> <br/>
    and <code>kvm: module has bad taint, not creating trace events</code>. <br/></p>
  </blockquote>
  
  <p>The source used is the same source that created the image that I am currently running. <br/> I've check the symbols and made sure to the error isn't cause by not including <code>EXPORT_SYMBOL_GPL()</code> in the patched files where I exported functions. <br/></p>
  
  <blockquote>
    <p>I've also seen some stuff about different kernel versions causing this error but I built the kernel that I'm booted in with the same source that I used to create the patched kvm modules.<br/>  Everything compile without an warning.  Any help is appreciated!</p>
  </blockquote>