Re: [PATCH 1/8] Replace memset() with memzero_explicit()

[Greg Kroah-Hartman]

On Tue, Nov 16, 2021 at 07:25:22PM +0800, Sandy Harris wrote:
> Replace memset(address,0,bytes) which may be optimised away
> with memzero_explicit(address,bytes) which resists
> such optimisation
> 
> ---
>  crypto/des_generic.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/crypto/des_generic.c b/crypto/des_generic.c
> index c85354a5e94c..105a32e7afea 100644
> --- a/crypto/des_generic.c
> +++ b/crypto/des_generic.c
> @@ -30,7 +30,7 @@ static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
>              err = 0;
>      }
>      if (err)
> -        memset(dctx, 0, sizeof(*dctx));
> +        memzero_explicit(dctx, sizeof(*dctx));
>      return err;
>  }
> 
> @@ -62,7 +62,7 @@ static int des3_ede_setkey(struct crypto_tfm *tfm,
> const u8 *key,
>              err = 0;
>      }
>      if (err)
> -        memset(dctx, 0, sizeof(*dctx));
> +        memzero_explicit(dctx, sizeof(*dctx));
>      return err;
>  }
> 
> --

Hi,

This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
a patch that has triggered this response.  He used to manually respond
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created.  Hopefully you will not take offence and will fix the problem
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