Re: [kernel-hardening] [RFC V2 3/6] lib: vsprintf: physical address kernel pointer filtering options
From: Greg KH
Date: Wed Oct 04 2017 - 04:58:03 EST
On Sun, Oct 01, 2017 at 11:06:47AM +1100, Tobin C. Harding wrote:
> Add the kptr_restrict setting of 4 which results in %pa and
> %p[rR] values being cleansed.
> Address types printed with %pa are replaced by zeros. Resources printed
> with %p[rR] have the starting address replaced by zeros, resource size
> is still shown.
> Signed-off-by: Tobin C. Harding <me@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>