Commit 1e2b7fcd authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: ahash - Stop legacy tfms from using the set_virt fallback path 



Ensure that drivers that have not been converted to the ahash API
do not use the ahash_request_set_virt fallback path as they cannot
use the software fallback.

Reported-by: default avatarEric Biggers <ebiggers@kernel.org>
Fixes: 9d7a0ab1 ("crypto: ahash - Handle partial blocks in API")
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 8c8dea26

crypto/ahash.c

+3 −0
Original line number Diff line number Diff line
@@ -350,6 +350,9 @@ static int ahash_do_req_chain(struct ahash_request *req, 
	if (!crypto_ahash_need_fallback(tfm))

		return -ENOSYS;



	if (crypto_hash_no_export_core(tfm))

		return -ENOSYS;



	{

		u8 state[HASH_MAX_STATESIZE];

include/crypto/internal/hash.h

+6 −0
Original line number Diff line number Diff line
@@ -91,6 +91,12 @@ static inline bool crypto_hash_alg_needs_key(struct hash_alg_common *alg) 
		!(alg->base.cra_flags & CRYPTO_ALG_OPTIONAL_KEY);

}



static inline bool crypto_hash_no_export_core(struct crypto_ahash *tfm)

{

	return crypto_hash_alg_common(tfm)->base.cra_flags &

	       CRYPTO_AHASH_ALG_NO_EXPORT_CORE;

}



int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,

		      struct crypto_instance *inst,

		      const char *name, u32 type, u32 mask);