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Message-ID: <CAG_fn=VbxOUS2wqaEbv4C0fG_Ej7sc7Dbymzz6fG8zndCwfasQ@mail.gmail.com>
Date: Fri, 5 Jul 2019 13:42:28 +0200
From: Alexander Potapenko <glider@...gle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Christoph Lameter <cl@...ux.com>, Kees Cook <keescook@...omium.org>, Michal Hocko <mhocko@...e.com>,
James Morris <jamorris@...ux.microsoft.com>,
Masahiro Yamada <yamada.masahiro@...ionext.com>, Michal Hocko <mhocko@...nel.org>,
James Morris <jmorris@...ei.org>, "Serge E. Hallyn" <serge@...lyn.com>,
Nick Desaulniers <ndesaulniers@...gle.com>, Kostya Serebryany <kcc@...gle.com>,
Dmitry Vyukov <dvyukov@...gle.com>, Sandeep Patil <sspatil@...roid.com>,
Laura Abbott <labbott@...hat.com>, Randy Dunlap <rdunlap@...radead.org>, Jann Horn <jannh@...gle.com>,
Mark Rutland <mark.rutland@....com>, Marco Elver <elver@...gle.com>, Qian Cai <cai@....pw>,
Linux Memory Management List <linux-mm@...ck.org>,
linux-security-module <linux-security-module@...r.kernel.org>,
Kernel Hardening <kernel-hardening@...ts.openwall.com>
Subject: Re: [PATCH v10 1/2] mm: security: introduce init_on_alloc=1 and
init_on_free=1 boot options
On Thu, Jul 4, 2019 at 9:53 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Wed, 3 Jul 2019 13:40:26 +0200 Alexander Potapenko <glider@...gle.com> wrote:
>
> > > There are unchangelogged alterations between v9 and v10. The
> > > replacement of IS_ENABLED(CONFIG_PAGE_POISONING)) with
> > > page_poisoning_enabled().
> > In the case I send another version of the patch, do I need to
> > retroactively add them to the changelog?
>
> I don't think the world could stand another version ;)
>
> Please simply explain this change for the reviewers?
As Qian Cai mentioned in the comments to v9:
> Yes, only checking CONFIG_PAGE_POISONING is not enough, and need to check
> page_poisoning_enabled().
Actually, page_poisoning_enabled() is enough, because it checks for
CONFIG_PAGE_POISONING itself.
Therefore I've just replaced IS_ENABLED(CONFIG_PAGE_POISONING)) with
page_poisoning_enabled().
--
Alexander Potapenko
Software Engineer
Google Germany GmbH
Erika-Mann-Straße, 33
80636 München
Geschäftsführer: Paul Manicle, Halimah DeLaine Prado
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
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