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Message-ID: <CAG_fn=XF1C-3CCKGCHTrgCtcsh-u390hjM=rp5ZRv3ijTH5YgQ@mail.gmail.com>
Date: Thu, 27 Jun 2019 12:05:54 +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.
>

Ah, sorry about that.
I'll probably send out v9 with proper poison handling and will pick
those two patches as well.
-- 
Alexander Potapenko
Software Engineer

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