Re: EuroBSDcon slides: pivot_root for BSD including NetBSD code

[Aleksey Cheusov <cheusov%tut.by@localhost>]

On Sat, Oct 20, 2012 at 5:17 PM, Adrian Steinmann <ast%netbsd.org@localhost> 
wrote:
> I have just delivered a presentation on pivot_root at EuroBSDcon
> and have put up the most important slides, a patch including new files
> against HEAD 20121017, and a custom ramdisk build I used to demonstrate
> pivot_root here:
>
> http://marabu.ch/pivot_root_eurobsdcon_2012/index.html

As far as I can see your patch breaks KAUTH_CRED_CHROOT
(sys/kern/vfs_syscalls.c:change_root).

What's the reason?