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Date:   Thu, 1 Apr 2021 09:37:59 +0100
From:   Will Deacon <>
To:     Kees Cook <>
Cc:     Catalin Marinas <>,
        Mark Rutland <>,
        Thomas Gleixner <>,
        Elena Reshetova <>,,
        Andy Lutomirski <>,
        Peter Zijlstra <>,
        Alexander Potapenko <>,
        Alexander Popov <>,
        Ard Biesheuvel <>,
        Jann Horn <>, Vlastimil Babka <>,
        David Hildenbrand <>,
        Mike Rapoport <>,
        Andrew Morton <>,
        Jonathan Corbet <>,
        Randy Dunlap <>,,,,,
Subject: Re: [PATCH v9 0/6] Optionally randomize kernel stack offset each

Hi Kees,

On Wed, Mar 31, 2021 at 01:54:52PM -0700, Kees Cook wrote:
> Hi Will (and Mark and Catalin),
> Can you take this via the arm64 tree for v5.13 please? Thomas has added
> his Reviewed-by, so it only leaves arm64's. :)

Sorry, these got mixed up in my inbox so I just replied to v7 and v8 and
then noticed v9. Argh!

However, I think the comments still apply: namely that the dummy "=m" looks
dangerous to me and I think you're accessing pcpu variables with preemption
enabled for the arm64 part:


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