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selinux: Re: Bootup problem with refpolicy-2.20091117

Re: Bootup problem with refpolicy-2.20091117

From: Justin P. Mattock <justinmattock_at_nospam>
Date: Mon Jan 18 2010 - 03:00:09 GMT
To: TaurusHarry <harrytaurus2002@hotmail.com>


On 01/17/10 18:40, TaurusHarry wrote:
> Hi SELinux experts,
>
> This is my very first time to try out the latest refpolicy-2.20091117
> and I am unable to boot SELinux up normally, in the very end the console
> will hang with messages like:
> INIT: Id "0" respawning too fast: disabled for 5 minutes
> INIT: no more processes left in this runlevel
> INIT: Id "0" respawning too fast: disabled for 5 minutes
>
> Aside from this, there are some strange error messages like "Starting
> udev: MAKEDEV: mkdir: File exists" and some AVC denied messages
> (detailed log is appended at the last).
>
> However, I could boot up SELinux with refpolicy-2.20081210 successfully,
> what I do is to first boot Linux kernel into a shell and load SELinux
> policy image then label the whole filesystem, second boot into
> /sbin/init as normal. The SELinux userspace tools I am using are:
> libsepol-2.0.36
> libselinux-2.0.79
> libsemanage-2.0.31
> policycoreutils-2.0.62
> checkpolicy-2.0.19
> sepolgen-1.0.16
>
> The kernel I am using is! 2.6.27, Stephen kindly pointed out a SELinux
> kernel bug six months ago when I had a problem to boot up
> refpolicy-2.20081210, which should be fixed by the commit of "SELinux:
> check open perms in dentry_open not inode_permission", or bypassed by
> diabling the open_perms in policy_capabilities.
>
> The same set of kernel and rootfs work well for refpolicy-2.20081210 but
> do not for refpolicy-2.20091117, I wonder what changes could make a
> difference? What should I have done in order to use the latest
> refpolicy-2.20091117? Any extra SELinux kernel commits I should port
> back to 2.6.27, or do I need to update SELinux userspace tools to the
> latest as well?
>
> Any comment is greatly appreciated! Thank you very much for your help!
>
> Best regards,
> Harry
>
> -----------
> ...
> VFS: Mounted root (ext2 filesystem).
> Freeing unused kernel memory: 296k freed
> type=1404 audit(1263731960.249:2): enforcing=1 old_enforcing=0
> auid=4294967295 ses=4294967295
> type=1403 ! audit(1263731961.676:3): policy loaded auid=4294967295
> ses=4294967295< br>INIT: version 2.86 booting
> type=1400 audit(1263731962.260:4): avc: denied { read } for pid=960
> comm="modprobe" name="console" dev=sda1 ino=244841
> scontext=system_u:system_r:insmod_t:s0-s15:c0.c255
> tcontext=system_u:object_r:console_device_t:s0 tclass=chr_file
> type=1400 audit(1263731962.307:5): avc: denied { read } for pid=960
> comm="modprobe" path="/dev/console" dev=sda1 ino=244841
> scontext=system_u:system_r:insmod_t:s0-s15:c0.c255
> tcontext=system_u:object_r:console_device_t:s0 tclass=chr_file
> Starting udev: MAKEDEV: mkdir: File exists
> [ OK ]
> Setting hostname cp3020: [ OK ]
> DM multipath kernel driver not loaded
> No devices found
> Checking filesystems
> Checking all file systems.
> [ OK ]
> can't create lock file /var/lock/mtab~2002: Permission denied (use -n
> flag to override)
> Mounting local filesystems: mount: sysfs already mounted or /sys busy
> mount: devpts a! lready mounted or /dev/pts busy
> can't create lock file /var/lock/mtab~2007: Permission denied (use -n
> flag to override)
> [FAILED]
> Enabling local filesystem quotas: [ OK ]
>
> *** Warning -- SELinux wr-strict policy relabel is required.
> *** Relabeling could take a very long time, depending on file
> *** system size and speed of hard drives.
> Enabling /etc/fstab swaps: [ OK ]
> INIT: Entering runlevel: 3
> Entering non-interactive startup
> Starting enterprise event logger: [ OK ]
> Starting remote event logger: [ OK ]
> Starting syslog-ng: [FAILED]
> Starting ipmi drivers: [ OK ]
> iscsid is stopped
> iSCSI daemon not running.
> Starting portmap: [ OK ]
> Mounting other filesystems: mount: sysfs already mounted or /sys busy
> mount: devpts already mounted or /dev/pts busy
> can't create lock file /var/lock/mtab~2158: Permission denied (use -n
> flag to overrid! e)
> [FAILED]
> Starting sshd: [ OK ]
> Starting xinetd : [ OK ]
> Starting iSCSI daemon: [ OK ]
> [ OK ]
> Starting enterprise event log notification: [ OK ]
> Starting sendmail: [ OK ]
> Starting sm-client: /etc/rc3.d/S80sendmail: line 71: /sbin/restorecon:
> No such file or directory
> [ OK ]
> Starting boa: [ OK ]
> Starting crond: [ OK ]
> Starting notification action daemon: [ OK ]
> Starting atd: [FAILED]
> INIT: Id "0" respawning too fast: disabled for 5 minutes
> INIT: no more processes left in this runlevel
> INIT: Id "0" respawning too fast: disabled for 5 minutes
> INIT: Id "0" respawning too fast: disabled for 5 minutes
> INIT: Id "0" respawning too fast: disabled for 5 minutes
> ...
> ------------------------------------------------------------------------
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hmm looking at the boot message the policy is already loaded,but errors out with atd. (or after)
and you have bootparams= selinux=1 enforcing=0 and /etc/selinux/config in permissive?

if both are set into permissive(the policy should load), then the next best thing todo is a bisect(just grab the latest refpolicy from git), this way you can get a better idea of whats causing this.

if you need help with doing a bisect let me know.

Justin P. Mattock -- This message was distributed to subscribers of the selinux mailing list. If you no longer wish to subscribe, send mail to majordomo@tycho.nsa.gov with the words "unsubscribe selinux" without quotes as the message.