Re: Bootup problems

[Timothy Wood <timothy@diyab.net>]

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Do you ever look further into this issue Stephen?  The reason I ask is
that I'm still seeing it on the current kernel.

Timothy,

| On Sun, 2004-05-23 at 14:13, Thomas Bleher wrote:
|> The attached dmesg (non-relevant lines before and after snipped) is the
|> bootlog of a 2.6.6er-kernel on a SuSE 9.0 system. No initrd, no special
|> modules (only sound as module, everything else compiled in).
|> The system works fine afterwards, the filesystem is properly labeled.
|> It just seems like it is the file labels are initialized to late.
|> Anyone knows why this is happening or where I should look?
|
| The sequence appears to be:
| 1) policy load is started (from /sbin/init, right?),
| 2) usb device is detected,
| 3) policy load completes,
| 4) security initialization of already created superblocks and inodes is
| started (this was deferred until the policy was loaded),
| 5) kernel invokes hotplug due to device detection,
| 6) security state for hotplug inode has not yet been initialized, thus
| it is still marked with unlabeled_t,
| 7) no domain transition occurs on hotplug execution due to lack of
| proper file type, so hotplug runs in kernel_t, yielding a series of
| denials,
| 8) some other inodes are also not yet initialized, so they also have
| unlabeled_t,
| 9) security initialization of hda3 inodes completes, so hotplug and
| other inodes now have the right security context (but the running
| hotplug process is still in kernel_t),
| 10) various denials due to the fact that the filesystems have not yet
| been mounted, so you are just accessing the empty mount point
| directories that are left in file_t.
|
| The interleaving of the device detection / hotplug execution and policy
| load / inode initialization is not good; requires further investigation.
|
| --
| Stephen Smalley <sds@epoch.ncsc.mil>
| National Security Agency

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