Re: [PATCH] crypto: drbg - Fix unused value warning in drbg_healthcheck_sanity()

From: Herbert Xu
Date: Thu Sep 16 2021 - 23:21:29 EST


On Fri, Sep 10, 2021 at 01:01:17PM -0600, Tim Gardner wrote:
> Coverity warns uf an unused value:
>
> CID 44865 (#2 of 2): Unused value (UNUSED_VALUE)
> assigned_value: Assigning value -14 to ret here, but that stored value is
> overwritten before it can be used.
> 2006 int ret = -EFAULT;
> ...
> value_overwrite: Overwriting previous write to ret with value from drbg_seed(drbg, &addtl, false).
> 2052 ret = drbg_seed(drbg, &addtl, false);
>
> Fix this by removing the variable initializer.
>
> Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
> Cc: linux-crypto@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Signed-off-by: Tim Gardner <tim.gardner@xxxxxxxxxxxxx>
> ---
> crypto/drbg.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

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