From: Herbert Xu <herbert@gondor.apana.org.au>
Subject: Re: [PATCH v8 5/9] dm: Remove VLA usage from hashes
Date: Tue, 4 Sep 2018 11:13:18 +0800
Message-ID: <20180904031318.47jc3jrxcdjeac5y@gondor.apana.org.au>
References: <20180807211843.47586-1-keescook@chromium.org>
 <20180807211843.47586-6-keescook@chromium.org>
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Cc: Eric Biggers <ebiggers@google.com>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        Giovanni Cabiddu <giovanni.cabiddu@intel.com>,
        Alasdair Kergon <agk@redhat.com>,
        Mike Snitzer <snitzer@redhat.com>,
        Tudor-Dan Ambarus <tudor.ambarus@microchip.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Will Deacon <will.deacon@arm.com>,
        Rasmus Villemoes <linux@rasmusvillemoes.dk>,
        David Woodhouse <dwmw@amazon.co.uk>,
        Matthew Wilcox <willy@infradead.org>,
        "David S. Miller" <davem@davemloft.net>,
        "Gustavo A. R. Silva" <gustavo@embeddedor.com>,
        linux-crypto@vger.kernel.org, dm-devel@redhat.com,
        qat-linux@intel.com, linux-kernel@vger.kernel.org
To: Kees Cook <keescook@chromium.org>
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On Tue, Aug 07, 2018 at 02:18:39PM -0700, Kees Cook wrote:
> In the quest to remove all stack VLA usage from the kernel[1], this uses
> the new HASH_MAX_DIGESTSIZE from the crypto layer to allocate the upper
> bounds on stack usage.
> 
> [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com
> 
> Signed-off-by: Kees Cook <keescook@chromium.org>

Can the dm folks please review this patch?

Thanks,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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