Subject: Re: [vserver] [Grsec] audit denies pivot_root ?
From: Romain Riviere <romain.riviere@gmail.com>
Date: Mon, 22 Nov 2010 20:42:49 +0100

 Mon, 22 Nov 2010 20:42:49 +0100
Hello,

Le 22 nov. 2010 à 12:28, Rik Bobbaers a écrit :

> don't really know what you mean by this but: is your problem solved now?
> or are there still problems?
There are still problems.

> the audit parameters shouldn't normally stop the pivot root call... they
> might LOG things, but not block.
And yet they do, along with logging.

> the chroot deny pivot does effectively
> block the pivot root call.
Oddly enough it does not, meaning I can perfectly start my guest with chroot deny pivot=1
...

> BTW. this is why i wouldn't really use chroot restrictions in combination
> with vserver. Bertl has done a lot of work to secure his vserver
> implementation. This makes grsecurity extras useless/abundant in
> combination with vserver... (just my 2 cents)

True. I am usually more interested in the PaX features, but during testing, this behaviour
striked me as odd ... as you said, *audit* should not block anything, yet it does, and
this is quite unnerving.
Anything I can do to help investigate ?

Cheers,