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Date: Thu, 9 Aug 2012 19:45:19 +0200
From: Ole Kliemann <ole@plastictree.net>
To: selinux@tycho.nsa.gov
Subject: Possible bug in finding default context?
Message-ID: <20120809174519.GE1643@telvanni>
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Sometime ago I posted about a problem I had when building a=20
monolithic policy. Login programs were unable to determine the=20
default context of users when logging in, although i was pretty=20
sure I did everything right. I never resolved that but didn't=20
bother either since I started writing a new modular policy from=20
scratch.

Everything worked flawlessly, including logins, until suddenly=20
now logins started to fail again with the login programs unable=20
to determine the context of the user.
=20
Oh, what fresh hell is this?! So I started rolling back changes,=20
and it turns out if there are too many types associated with one=20
role and that role and one of its types is set as default context=20
for a user, /bin/login gives 'Unable to get valid context'.

BTW, the exact number seems 194. 194 types associated with one=20
role works. 195 and it's broken.

I'm doing this on Ubuntu 12.04, so it could be the crappily=20
maintained selinux userland here.

Ole

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