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Commit b30bdfa8 authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: gcm - Filter out async ghash if necessary 



As it is if you ask for a sync gcm you may actually end up with
an async one because it does not filter out async implementations
of ghash.

This patch fixes this by adding the necessary filter when looking
for ghash.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 88f1d316

crypto/gcm.c

+3 −1
Original line number Diff line number Diff line
@@ -639,7 +639,9 @@ static int crypto_gcm_create_common(struct crypto_template *tmpl, 


	ghash_alg = crypto_find_alg(ghash_name, &crypto_ahash_type,

				    CRYPTO_ALG_TYPE_HASH,

				    CRYPTO_ALG_TYPE_AHASH_MASK);

				    CRYPTO_ALG_TYPE_AHASH_MASK |

				    crypto_requires_sync(algt->type,

							 algt->mask));

	if (IS_ERR(ghash_alg))

		return PTR_ERR(ghash_alg);