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Message-ID: <CAGXu5jJSUFFUpaWYToiKQymKR-wwem55WgAgbygWXdTfHQUs4Q@mail.gmail.com>
Date: Mon, 2 Jul 2018 10:29:24 -0700
From: Kees Cook <keescook@...omium.org>
To: Will Deacon <will.deacon@....com>
Cc: Laura Abbott <labbott@...hat.com>, Mark Rutland <mark.rutland@....com>,
Ard Biesheuvel <ard.biesheuvel@...aro.org>,
Kernel Hardening <kernel-hardening@...ts.openwall.com>, LKML <linux-kernel@...r.kernel.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
Alexander Popov <alex.popov@...ux.com>, Catalin Marinas <catalin.marinas@....com>
Subject: Re: [PATCH] arm64: Clear the stack
Hi Will,
On Mon, Jul 2, 2018 at 2:59 AM, Will Deacon <will.deacon@....com> wrote:
> On Fri, Jun 29, 2018 at 01:25:20PM -0700, Kees Cook wrote:
>> No worries! I've made the change locally and will push this out to
>> -next unless there are objections?
>
> I'm a bit wary of conflicts in entry.S, since it's likely that we're going
> to have a lot going on in there for 4.19.
>
> Could I take this via arm64 instead, please, or are there dependencies
> on other parts of your tree?
It depends on the plugin existing, but we could split it up so the
arm64 part could go separately. It would just be a no-op in the arm64
tree since CONFIG_GCC_PLUGIN_STACKLEAK won't exist there. Whatever
works best for you!
-Kees
--
Kees Cook
Pixel Security
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