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Date:   Wed, 28 Dec 2022 10:39:17 +0100
From:   Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
To:     Herbert Xu <herbert@gondor.apana.org.au>
Cc:     Anders Roxell <anders.roxell@linaro.org>,
        Kees Cook <keescook@chromium.org>,
        Horia =?utf-8?Q?Geant=C4=83?= <horia.geanta@nxp.com>,
        Gaurav Jain <gaurav.jain@nxp.com>,
        Pankaj Gupta <pankaj.gupta@nxp.com>,
        linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org,
        linux-crypto@vger.kernel.org, kernel@pengutronix.de,
        "David S. Miller" <davem@davemloft.net>,
        kernel test robot <lkp@intel.com>
Subject: Re: [PATCH] crypto: caam - Avoid GCC memset bug warning
Message-ID: <20221228093917.zhkjpzc2ok5dc4ga@pengutronix.de>
References: <20221222162513.4021928-1-u.kleine-koenig@pengutronix.de>
 <Y6VK4IJkHiawAbJz@gondor.apana.org.au>
 <20221223174719.4n6pmwio4zycj2qm@pengutronix.de>
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On Wed, Dec 28, 2022 at 04:46:39PM +0800, Herbert Xu wrote:
> Certain versions of gcc don't like the memcpy with a NULL dst
> (which only happens with a zero length).  This only happens
> when debugging is enabled so add an if clause to work around
> these warnings.
>=20
> A similar warning used to be generated by sparse but that was
> fixed years ago.
>=20
> Link: https://lore.kernel.org/lkml/202210290446.qBayTfzl-lkp@intel.com
> Reported-by: kernel test robot <lkp@intel.com>
> Reported-by: Kees Cook <keescook@chromium.org>
> Reported-by: Uwe Kleine-K=EF=BF=BDnig <u.kleine-koenig@pengutronix.de>

Huh, broken encoding in the mail. I'd appreciate someone to doublecheck
it's fine in the final commit.

Tested-by: Uwe Kleine-K=C3=B6nig <u.kleine-koenig@pengutronix.de>

Best regards
Uwe

--=20
Pengutronix e.K.                           | Uwe Kleine-K=C3=B6nig         =
   |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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