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Date: Thu, 27 Jun 2019 15:17:00 +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>,
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 v8 1/2] mm: security: introduce init_on_alloc=1 and
init_on_free=1 boot options
On Thu, Jun 27, 2019 at 1:28 AM Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Wed, 26 Jun 2019 14:19:42 +0200 Alexander Potapenko <glider@...gle.com> wrote:
>
> > v8:
> > - addressed comments by Michal Hocko: revert kernel/kexec_core.c and
> > apply initialization in dma_pool_free()
> > - disable init_on_alloc/init_on_free if slab poisoning or page
> > poisoning are enabled, as requested by Qian Cai
> > - skip the redzone when initializing a freed heap object, as requested
> > by Qian Cai and Kees Cook
> > - use s->offset to address the freeptr (suggested by Kees Cook)
> > - updated the patch description, added Signed-off-by: tag
>
> v8 failed to incorporate
>
> https://ozlabs.org/~akpm/mmots/broken-out/mm-security-introduce-init_on_alloc=1-and-init_on_free=1-boot-options-fix.patch
> and
> https://ozlabs.org/~akpm/mmots/broken-out/mm-security-introduce-init_on_alloc=1-and-init_on_free=1-boot-options-fix-2.patch
>
> it's conventional to incorporate such fixes when preparing a new
> version of a patch.
>
v9 contains these patches (I've also exported init_on_free), so should
now be fine to drop them.
--
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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