Re: [PATCH] /proc/kcore: Update physical address for kcore ram and text

[Pratyush Anand]

Hi Andrew/Kees,

On Tuesday 14 February 2017 07:16 AM, Pratyush Anand wrote:
> > Well, CONFIG_PROC_KCORE is a generalized root KASLR exposure (though
> > there are lots of such exposures). Why is the actual physical address
> > needed? Can this just report the virtual address instead? Then the
> > tool can build a map, but it looks like an identity map, rather than
> > creating a new physical/virtual memory ASLR offset exposure?
>
> Well, having an ASLR offset information can help to translate an
> identity mapped virtual address to a physical address. But that would be
> an additional field in PT_LOAD header structure and an arch dependent
> value.
>
> Moreover, sending a valid physical address like 0 does not seem right.
> So, IMHO it is better to fix that and send valid physical address when
> available (identity mapped).
>
> Thanks for the review.

So, whats the decision on this patch? I see that patch is lying in 
next/master. Should I expect this patch in v4.11-rc1?

Couple of user-space makedumpfile modification will depend on this 
patch. So, we can not get those makedumpfile patches merged until this 
patch hits upstream.

~Pratyush