From: Herbert Xu <[email protected]> commit b30bdfa86431afbafe15284a3ad5ac19b49b88e3 upstream.
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. Signed-off-by: Herbert Xu <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> Signed-off-by: Willy Tarreau <[email protected]> --- crypto/gcm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/crypto/gcm.c b/crypto/gcm.c index cd97cdd..451e420 100644 --- a/crypto/gcm.c +++ b/crypto/gcm.c @@ -716,7 +716,9 @@ static struct crypto_instance *crypto_gcm_alloc_common(struct rtattr **tb, 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 ERR_CAST(ghash_alg); -- 2.8.0.rc2.1.gbe9624a
