From mboxrd@z Thu Jan  1 00:00:00 1970
From: Kees Cook <keescook@chromium.org>
Date: Wed, 25 Jul 2018 18:01:47 +0000
Subject: Re: [PATCH v6 10/18] x86/power/64: Remove VLA usage
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To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>, Arnd Bergmann <arnd@arndb.de>, Eric Biggers <ebiggers@google.com>, "Gustavo A. R. Silva" <gustavo@embeddedor.com>, Alasdair Kergon <agk@redhat.com>, Rabin Vincent <rabinv@axis.com>, Tim Chen <tim.c.chen@linux.intel.com>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Pavel Machek <pavel@ucw.cz>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>, the arch/x86 maintainers <x86@kernel.org>, Philipp Reisner <philipp.reisner@linbit.com>, Lars Ellenberg <lars.ellenberg@linbit.com>, Jens Axboe <axboe@kernel.dk>, Giovanni Cabiddu <giovanni.cabiddu@intel.com>, Mike Snitzer <snitzer@redhat.com>, Paul Mackerras <paulus@samba.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, David Howells <dhowells@redhat.com>, Johannes Berg <johannes@sipsolutions.net>, Tudor-Dan Ambarus <tudor.ambarus@microchip.com>, Jia-Ju Bai <baijiaju1990@gmail.com>, Andrew Morton <akpm@linux-foundation.org>, Geert Uytterhoeven <geert@linux-m68k.org>, Josh Poimboeuf <jpoimboe@redhat.com>, David Woodhouse <dwmw@amazon.co.uk>, Will Deacon <will.deacon@arm.com>, device-mapper development <dm-devel@redhat.com>, Linux PM <linux-pm@vger.kernel.org>, linux-crypto <linux-crypto@vger.kernel.org>, drbd-dev@lists.linbit.com, linux-block <linux-block@vger.kernel.org>, qat-linux@intel.com, linux-ppp@vger.kernel.org, netdev <netdev@vger.kernel.org>, "open list:ANDROID DRIVERS" <devel@driverdev.osuosl.org>, linux-afs@lists.infradead.org, "open list:NETWORKING DRIVERS (WIRELESS)" <linux-wireless@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>

On Wed, Jul 25, 2018 at 4:32 AM, Rafael J. Wysocki <rafael@kernel.org> wrote:
> On Tue, Jul 24, 2018 at 6:49 PM, Kees Cook <keescook@chromium.org> wrote:
>> In the quest to remove all stack VLA usage from the kernel[1], this
>> removes the discouraged use of AHASH_REQUEST_ON_STACK by switching to
>> shash directly and allocating the descriptor in heap memory (which should
>> be fine: the tfm has already been allocated there too).
>>
>> [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com
>>
>> Signed-off-by: Kees Cook <keescook@chromium.org>
>> Acked-by: Pavel Machek <pavel@ucw.cz>
>
> I think I can queue this up if there are no objections from others.
>
> Do you want me to do that?

Sure thing. It looks like the other stand-alone patches like this one
are getting taken into the non-crypto trees, so that's fine.

Thanks!

-Kees

-- 
Kees Cook
Pixel Security