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Date:   Fri, 31 Jul 2020 16:33:35 -0700
From:   Kees Cook <>
To:     Ingo Molnar <>
Cc:     Arvind Sankar <>,,
Subject: Re: [PATCH v3 00/21] x86/kaslr: Cleanup and small bugfixes

On Fri, Jul 31, 2020 at 11:21:46AM +0200, Ingo Molnar wrote:
> * Arvind Sankar <> wrote:
> > On Tue, Jul 28, 2020 at 06:57:01PM -0400, Arvind Sankar wrote:
> > > v2->v3:
> > > - Fix the first patch: command line size should be strlen + 1 to account
> > >   for terminating NUL. Avoid calling add_identity_map if cmdline was
> > >   NULL, though it should do nothing in that case anyway.
> > 
> > Hi Ingo, I noticed that WIP.x86/kaslr and x86/kaslr both have the v2
> > version of the first patch. That has a bug in the cmd_line_size
> > calculation (missing the +1).
> Indeed, well spotted. I rebased the affected 4 patches in x86/kaslr 
> and used the opportunity to add Kees's Reviewed-by to the first 4 
> patches as well.
> I've zapped tip:x86/kaslr for now and put the whole series into 
> tip:WIP.x86/kaslr, will move it into tip:x86/kaslr for a v5.9 merge 
> once Kees is happy with the latest version.
> Kees, AFAICS your type truncation and patch split-up review 
> suggestions were resolved in v3?

I need to double-check, but I think so. I'm hoping to get to that on
Monday. My orphan section series work took MUCH longer than I thought it
was going to. :P

Kees Cook

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