linux-kernel - Re: [PATCH v3] crypto: x86/polyval - Fix crashes when keys are not 16-byte aligned

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Message-ID: <Y1KE9hXfmrC4JFVT@gondor.apana.org.au>
Date:   Fri, 21 Oct 2022 19:39:34 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Nathan Huckleberry <nhuck@...gle.com>
Cc:     ebiggers@...nel.org, ardb@...nel.org, bgoncalv@...hat.com,
        bp@...en8.de, dave.hansen@...ux.intel.com, davem@...emloft.net,
        hpa@...or.com, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org, mingo@...hat.com, tglx@...utronix.de,
        x86@...nel.org
Subject: Re: [PATCH v3] crypto: x86/polyval - Fix crashes when keys are not
 16-byte aligned

On Tue, Oct 18, 2022 at 04:04:12PM -0700, Nathan Huckleberry wrote:
> crypto_tfm::__crt_ctx is not guaranteed to be 16-byte aligned on x86-64.
> This causes crashes due to movaps instructions in clmul_polyval_update.
> 
> Add logic to align polyval_tfm_ctx to 16 bytes.
> 
> Fixes: 34f7f6c30112 ("crypto: x86/polyval - Add PCLMULQDQ accelerated implementation of POLYVAL")
> Reported-by: Bruno Goncalves <bgoncalv@...hat.com>
> Signed-off-by: Nathan Huckleberry <nhuck@...gle.com>
> ---
>  arch/x86/crypto/polyval-clmulni_glue.c | 19 ++++++++++++++-----
>  1 file changed, 14 insertions(+), 5 deletions(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt