I have just hit this problem on Ubuntu 18.04, and I was able to solve it by
running
root@ubuntu:~# sudo dpkg-reconfigure apparmor
Unlike the previous poster, I am not aware of any sudden powercycles. I
simply attempted to run a docker container. The docker command and
output are below, with PII redacted.
docker run --rm -v /home/[REDACTED]/projects/snap/out/log:/log -v
/home/[REDACTED]/projects/snap/django:/tmslogs -v
/home/[REDACTED]/projects/snap/out/db:/db -v
/home/[REDACTED]/projects/snap/out/media:/media -v
/home/[REDACTED]/projects/snap/out/dumps:/dumps -v
/home/[REDACTED]/projects/snap/config:/config -t -i
[REDACTED].com/tmslogs:latest /bin/bash
docker: Error response from daemon: AppArmor enabled on system but the
docker-default profile could not be loaded: running
`/sbin/apparmor_parser apparmor_parser -Kr /var/lib/docker/tmp/docker-
default964375229` failed with output: AppArmor parser error for
/var/lib/docker/tmp/docker-default964375229 in
/etc/apparmor.d/tunables/home.d/ubuntu at line 7: Found unexpected
character: ''
root@ubuntu:~# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04 LTS"
root@ubuntu:~# uname -a
Linux ubuntu 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
root@ubuntu:~# docker --version
Docker version 17.12.1-ce, build 7390fc6
root@ubuntu:~# cat /etc/apparmor.d/tunables/home.d/ubuntu
# This file is auto-generated. It is recommended you update it using:
# $ sudo dpkg-reconfigure apparmor
#
# The following is a space-separated list of where additional user home
# directories are stored, each must have a trailing '/'. Directories added
# here are appended to @{HOMEDIRS}. See tunables/home for details.
root@ubuntu:~#
I followed the hint in /etc/apparmor.d/tunables/home.d/ubuntu and ran
root@ubuntu:~# sudo dpkg-reconfigure apparmor
This solved the problem.
After this solved the problem, this reminded me that I have modified my
/home directories. After installing Ubuntu 18.04 and creating my
default user account, I logged in and mounted a second drive into
'/home'. Perhaps anyone looking into this issue, or experiencing this
issue could take this clue and run with it.
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https://bugs.launchpad.net/bugs/1778984
Title:
Parse error of /etc/apparmor.d/tunables/home.d/ubuntu after
unattended-upgrades
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