3.11.0-5.11 has broken aufs support (needed for docker)

With the following 2 packages installed on a precise base

ii linux-image-3.11.0-5-generic 3.11.0-5.11 Linux kernel image for version 3.11.0 on 64 bit x86 SMP
ii linux-image-extra-3.11.0-5-generic 3.11.0-5.11 Linux kernel extra modules for version 3.11.0 on 64 bit x86 SMP

Trying to "modprobe aufs", results in the following error
[ 92.358229] aufs au_loopback_init:136:modprobe[2104]: loop_backing_file() is not defined

The aufs dev team replied here. This is probably fixed by now in the aufs patchset
http://<email address hidden>/msg04337.html

Kindly rebuild with a working aufs module
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.11.0-5-generic.
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.0.1-0ubuntu17.4
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info: Error: [Errno 2] No such file or directory
Card0.Amixer.values: Error: [Errno 2] No such file or directory
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=3c067626-322f-4ef4-8190-20b032a3f13e
InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1)
Lsusb:
 Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: innotek GmbH VirtualBox
MarkForUpload: True
Package: linux (not installed)
ProcEnviron:
 LANGUAGE=en_US:
 TERM=screen
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-5-generic root=UUID=9362b5de-b35d-4ceb-8b28-635f8802fc5b ro
ProcVersionSignature: Ubuntu 3.11.0-5.11-generic 3.11.0
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-5-generic N/A
 linux-backports-modules-3.11.0-5-generic N/A
 linux-firmware 1.79.6
RfKill: Error: [Errno 2] No such file or directory
Tags: precise
Uname: Linux 3.11.0-5-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout lpadmin plugdev sambashare sudo
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH