On Thu, 27 Dec 2007 01:16:25 +1100 (EST) James Morris <[email protected]> wrote:
> On Wed, 26 Dec 2007, James Morris wrote:
>
> > What does the following say ?
> >
> > # sestatus && rpm -q selinux-policy
>
> Don't worry about that -- I reproduced it with Paul Moore's git tree:
> git://git.infradead.org/users/pcmoore/lblnet-2.6_testing
>
> (under current -mm, the e1000 driver doesn't find my ethernet card & the
> tcl tests won't run without an external interface).
You might need to enable CONFIG_E1000E.
> The offending commit is when SELinux is converted to the new ifindex
> interface:
>
> 9c6ad8f6895db7a517c04c2147cb5e7ffb83a315 is first bad commit
> commit 9c6ad8f6895db7a517c04c2147cb5e7ffb83a315
> Author: Paul Moore <[email protected]>
> Date: Fri Dec 21 11:44:26 2007 -0500
>
> SELinux: Convert the netif code to use ifindex values
>
> [...]
>
> In some case (not yet fully identified -- also happens when avahi starts
> up, although seemingly silently & without obvious issues), SELinux is
> passed an ifindex of 1515870810, which corresponds to 0x5a5a5a5a, the slab
> poison value, suggesting a race in the calling code where we're being
> asked to check an skb which has been freed.
>
> The SELinux code is erroring out before performing an access check
> (perhaps there should be WARN_ON, at least), so this will affect both
> permissive and enforcing mode without generating any log messages.
>
> Andrew: I suggest dropping the patchset from -mm until Paul gets back from
> vacation.
OK, thanks.
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