linux-kernel - Re: [PATCH] crypto: inside-secure: Fix sizeof() mismatch

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Date:   Sun, 11 Oct 2020 12:19:12 +0200
From:   Antoine Tenart <atenart@...nel.org>
To:     "David S . Miller" <davem@...emloft.net>,
        Colin King <colin.king@...onical.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Ofer Heifetz <oferh@...vell.com>, linux-crypto@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] crypto: inside-secure: Fix sizeof() mismatch

Hello,

Quoting Colin King (2020-10-10 18:47:36)
> From: Colin Ian King <colin.king@...onical.com>
> 
> An incorrect sizeof() is being used, sizeof(priv->ring[i].rdr_req) is
> not correct, it should be sizeof(*priv->ring[i].rdr_req). Note that
> since the size of ** is the same size as * this is not causing any
> issues.
> 
> Addresses-Coverity: ("Sizeof not portable (SIZEOF_MISMATCH)")
> Fixes: 9744fec95f06 ("crypto: inside-secure - remove request list to improve performance")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Acked-by: Antoine Tenart <atenart@...nel.org>

Thanks!
Antoine

> ---
>  drivers/crypto/inside-secure/safexcel.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
> index eb2418450f12..2e1562108a85 100644
> --- a/drivers/crypto/inside-secure/safexcel.c
> +++ b/drivers/crypto/inside-secure/safexcel.c
> @@ -1639,7 +1639,7 @@ static int safexcel_probe_generic(void *pdev,
>  
>                 priv->ring[i].rdr_req = devm_kcalloc(dev,
>                         EIP197_DEFAULT_RING_SIZE,
> -                       sizeof(priv->ring[i].rdr_req),
> +                       sizeof(*priv->ring[i].rdr_req),
>                         GFP_KERNEL);
>                 if (!priv->ring[i].rdr_req)
>                         return -ENOMEM;
> -- 
> 2.27.0
>