root@dev-ramen7:~# systemctl status libvirtd.service;
● libvirt-bin.service - Virtualization daemon
   Loaded: loaded (/lib/systemd/system/libvirt-bin.service; enabled; vendor preset: enabled)
   Active: active (running) since Tue 2017-01-24 06:23:16 PST; 3min 47s ago
     Docs: man:libvirtd(8)
           http://libvirt.org
 Main PID: 11066 (libvirtd)
    Tasks: 16
   Memory: 16.5M
      CPU: 1.054s
   CGroup: /system.slice/libvirt-bin.service
           └─11066 /usr/sbin/libvirtd

Jan 24 06:23:16 dev-ramen7 systemd[1]: Starting Virtualization daemon...
Jan 24 06:23:16 dev-ramen7 systemd[1]: Started Virtualization daemon.
Jan 24 06:25:05 dev-ramen7 libvirtd[11066]: libvirt version: 1.3.1, package: 1ubuntu10.6 (Christian Ehrhardt <christian.ehrhardt@canonical.com> Tue, 22 Nov 2
Jan 24 06:25:05 dev-ramen7 libvirtd[11066]: hostname: ramen7.dev.saucelabs.net
Jan 24 06:25:05 dev-ramen7 libvirtd[11066]: End of file while reading data: Input/output error
Jan 24 06:26:07 dev-ramen7 libvirtd[11066]: internal error: Child process (LIBVIRT_LOG_OUTPUTS=3:stderr /usr/lib/libvirt/virt-aa-helper -p 0 -c -u libvirt-94
                                            2017-01-24 14:26:07.978+0000: 11457: info : hostname: ramen7.dev.saucelabs.net
                                            2017-01-24 14:26:07.978+0000: 11457: error : virPCIDeviceNew:1586 : internal error: dev->name buffer overflow: 72
                                            virt-aa-helper: error: /var/local/mount/oshi103044/mnt
                                            virt-aa-helper: error: could not find realpath for disk
                                            virt-aa-helper: error: invalid VM definition
Jan 24 06:26:07 dev-ramen7 libvirtd[11066]: internal error: cannot load AppArmor profile 'libvirt-944d4e1f-f9f8-42db-96b6-5af85000dac1'

/var/log/syslog
Jan 24 06:26:07 ramen7 libvirtd[11066]: internal error: cannot load AppArmor profile 'libvirt-944d4e1f-f9f8-42db-96b6-5af85000dac1'
Jan 24 06:26:07 ramen7 xenial_noded.sh[11087]: dhcp host: {'ip': '10.89.1libvirt: Security Driver error : internal error: cannot load AppArmor profile 'libvirt-944d4e1f-f9f8-42db-96b6-5af85000dac1'


root@dev-ramen7:~# cat /etc/apparmor.d/usr.lib.libvirt.virt-aa-helper
# Last Modified: Mon Jul  06 17:22:37 2009
#include <tunables/global>

/usr/lib/libvirt/virt-aa-helper {
  #include <abstractions/base>
  #include <abstractions/user-tmp>
  # Avoid name resolution issues (LP: #1546674)
  #include <abstractions/nameservice>

  # needed for searching directories
  capability dac_override,
  capability dac_read_search,

  # needed for when disk is on a network filesystem
  network inet,
  network inet6,

  deny @{PROC}/[0-9]*/mounts r,
  @{PROC}/[0-9]*/net/psched r,
  owner @{PROC}/[0-9]*/status r,
  @{PROC}/filesystems r,

  # for hostdev
  /sys/devices/ r,
  /sys/devices/** r,
  /sys/bus/usb/devices/ r,
  /sys/bus/usb/devices/** r,
  deny /dev/sd* r,
  deny /dev/dm-* r,
  deny /dev/mapper/ r,
  deny /dev/mapper/* r,

  /usr/lib/libvirt/virt-aa-helper mr,
  /sbin/apparmor_parser Ux,

  # for openvswitch
  /{,var/}run/** rw,

  /etc/apparmor.d/libvirt/* r,
  /etc/apparmor.d/libvirt/libvirt-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]* rw,

  # For backingstore, virt-aa-helper needs to peek inside the disk image, so
  # allow access to non-hidden files in @{HOME} as well as storage pools, and
  # removable media and filesystems, and certain file extentions. A
  # virt-aa-helper failure when checking a disk for backinsgstore is non-fatal
  # (but obviously the backingstore won't be added).
  audit deny @{HOME}/.* mrwkl,
  audit deny @{HOME}/.*/ rw,
  audit deny @{HOME}/.*/** mrwkl,
  @{HOME}/ r,
  @{HOME}/** r,
  @{HOME}/.Private/** mrwlk,
  @{HOMEDIRS}/.ecryptfs/*/.Private/** mrwlk,

  /var/lib/libvirt/images/ r,
  /var/lib/libvirt/images/** r,
  /var/lib/nova/images/** r,
  /var/lib/nova/instances/_base/** r,
  /var/lib/nova/instances/snapshots/** r,
  /var/lib/eucalyptus/instances/**/disk* r,
  /var/lib/eucalyptus/instances/**/loader* r,
  /var/lib/uvtool/libvirt/images/** r,
  /var/local/mount/** r,
  /mnt/album/**/* r,
  /{media,mnt,opt,srv}/** r,

  /**.img r,
  /**.qcow{,2} r,
  /**.qed r,
  /**.vmdk r,
  /**.[iI][sS][oO] r,
  /**/disk{,.*} r,
}