Re: [kernel-hardening] [RFC V2 1/6] lib: vsprintf: additional kernel pointer filtering options

[Greg KH]

On Wed, Oct 04, 2017 at 09:08:57AM -0400, Steven Rostedt wrote:
> On Wed, 4 Oct 2017 10:55:42 +0200
> Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> 
> > On Sun, Oct 01, 2017 at 11:06:45AM +1100, Tobin C. Harding wrote:
> > > Add the kptr_restrict setting of 3 which results in both
> > > %p and %pK values being replaced by zeros.
> > > 
> > > Add an additional %pP value inspired by the Grsecurity
> > > option which explicitly whitelists pointers for output.
> > > 
> > > Amend scripts/checkpatch.pl to handle %pP.
> > > 
> > > This patch is based on work by William Roberts
> > > <william.c.roberts@xxxxxxxxx>
> > > 
> > > Signed-off-by: Tobin C. Harding <me@xxxxxxxx>  
> > 
> > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> 
> Greg,
> 
> I'm curious to why you are adding a "Signed-off-by"? That usually means
> that you either help author it, or it is going through your tree. I've
> never seen a "Signed-off-by" in passing. That's usually a "Acked-by" or
> "Reviewed-by".

I did help author it :)

Hope that helps,

greg k-h