pt_chown is executed when adding a serial console backed by a pts
chardev:

It is the same problem as
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/632696

      <serial type='pty'>
        <target port='0'/>
      </serial>

I get the same error on the second start of the VM after a reboot of the
host, not on the first one (I don't know why).

Jun  9 04:06:24 host kernel: [ 2588.975014] audit: type=1400 
audit(1433847984.691:97): apparmor="DENIED" operation="open" 
profile="libvirt-ee2d78ea-af2f-4e82-9b0e-ef75470ff81e" name="/proc/7809/fd/" 
pid=7809 comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=108 
ouid=108
Jun  9 04:06:24 host kernel: [ 2588.975073] audit: type=1400 
audit(1433847984.691:98): apparmor="DENIED" operation="exec" 
profile="libvirt-ee2d78ea-af2f-4e82-9b0e-ef75470ff81e" name="/usr/lib/pt_chown" 
pid=7809 comm="qemu-system-x86" requested_mask="x" denied_mask="x" fsuid=108 
ouid=0

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https://bugs.launchpad.net/bugs/1342083

Title:
  "Failed to create chardev" due to apparmor DENIED execute of
  "/usr/lib/pt_chown"

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