package selinux-policy-ubuntu 0.2.20091117-0ubuntu2 failed to install/upgrade: subprocess installed post-removal script returned error exit status 2

[davis liu]

I tried to get selinux fully functioning on ubuntu.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: selinux-policy-ubuntu 0.2.20091117-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.6
AptOrdering:
 selinux-policy-ubuntu: Remove
 selinux-policy-default: Install
 selinux-policy-default: Configure
Architecture: i386
Date: Mon Dec 22 17:00:08 2014
DpkgTerminalLog:
 Removing selinux-policy-ubuntu (0.2.20091117-0ubuntu2) ...
 dpkg (subprocess): unable to execute installed post-removal script (/var/lib/dpkg/info/selinux-policy-ubuntu.postrm): Permission denied
 dpkg: error processing package selinux-policy-ubuntu (--remove):
  subprocess installed post-removal script returned error exit status 2
DuplicateSignature: package:selinux-policy-ubuntu:0.2.20091117-0ubuntu2:subprocess installed post-removal script returned error exit status 2
ErrorMessage: subprocess installed post-removal script returned error exit status 2
InstallationDate: Installed on 2014-12-15 (7 days ago)
InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release i386 (20140204)
PackageArchitecture: all
SourcePackage: refpolicy-ubuntu
Title: package selinux-policy-ubuntu 0.2.20091117-0ubuntu2 failed to install/upgrade: subprocess installed post-removal script returned error exit status 2
UpgradeStatus: Upgraded to trusty on 2014-12-15 (7 days ago)