Re: [PATCH 1/4] crypto: Introduce notifier for new crypto algorithms

From: Herbert Xu
Date: Mon Aug 27 2018 - 02:09:44 EST


On Sat, Aug 25, 2018 at 10:40:03PM -0400, Martin K. Petersen wrote:
>
> diff --git a/crypto/algapi.c b/crypto/algapi.c
> index c0755cf4f53f..87abad3cc322 100644
> --- a/crypto/algapi.c
> +++ b/crypto/algapi.c
> @@ -361,15 +361,12 @@ static void crypto_wait_for_test(struct crypto_larval *larval)
> err = crypto_probing_notify(CRYPTO_MSG_ALG_REGISTER, larval->adult);
> if (err != NOTIFY_STOP) {
> if (WARN_ON(err != NOTIFY_DONE))
> - goto out;
> + return;
> crypto_alg_tested(larval->alg.cra_driver_name, 0);
> }
>
> err = wait_for_completion_killable(&larval->completion);
> WARN_ON(err);
> -
> -out:
> - crypto_larval_kill(&larval->alg);
> }
>
> int crypto_register_alg(struct crypto_alg *alg)
> @@ -390,6 +387,8 @@ int crypto_register_alg(struct crypto_alg *alg)
> return PTR_ERR(larval);
>
> crypto_wait_for_test(larval);
> + crypto_probing_notify(CRYPTO_MSG_ALG_LOADED, larval);
> + crypto_larval_kill(&larval->alg);

I see that you have moved the larval_kill call into the caller.
This is a problem because there are two callers to wait_for_test.

So it's probably best to leave it in wait_for_test and add the
notify there.

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