Re: Mount of cgroup filesystems fails when booting in SELinux enforcing mode

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On 02/14/2013 04:25 PM,  Luis Ressel wrote:
Hello everyone,


does anybody have an idea about this bug?
https://bugs.gentoo.org/show_bug.cgi?id=457618

It looks like help from SELinux kernel developers would be really
helpful here, as everything is going on in-kernel here. It would be
especially helpful if someone could explain why there are no avc denial
messages.

If it helps, this is the userland script which mounts the cgroup
filesystems and therefore causes the messages:

         local agent="/lib64/rc/sh/cgroup-release-agent.sh"
         mkdir /sys/fs/cgroup/openrc
         mount -n -t cgroup \
                 -o none,nodev,noexec,nosuid,name=openrc,release_agent="$agent" \
                 openrc /sys/fs/cgroup/openrc
         echo 1 > /sys/fs/cgroup/openrc/notify_on_release

         yesno ${rc_controller_cgroups:-YES} && [ -e /proc/cgroups ] || return 0
         while read name hier groups enabled rest; do
                 case "${enabled}" in
                         1)      mkdir /sys/fs/cgroup/${name}
                                 mount -n -t cgroup -o nodev,noexec,nosuid,${name} \
                                         ${name} /sys/fs/cgroup/${name}
                                 ;;
                 esac
         done < /proc/cgroups

The "echo 1" line yields a "permission denied" error, but apart from
that there are no other messages.


If you need more details, just ask me.
Any feedback will be greatly appreciated!

Try stripping dontaudit rules from your policy and re-testing.
semodule -DB
<re-test>
semodule -B




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