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Commit 593dfbd9 authored by Sergey Senozhatsky's avatar Sergey Senozhatsky Committed by Herbert Xu
Browse files

crypto: drbg - report backend_cra_name when allocation fails 



Be more verbose and also report ->backend_cra_name when
crypto_alloc_shash() or crypto_alloc_cipher() fail in
drbg_init_hash_kernel() or drbg_init_sym_kernel()
correspondingly.

Example
 DRBG: could not allocate digest TFM handle: hmac(sha256)

Signed-off-by: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 42ea507f

crypto/drbg.c

+4 −2
Original line number Diff line number Diff line
@@ -1635,7 +1635,8 @@ static int drbg_init_hash_kernel(struct drbg_state *drbg) 


	tfm = crypto_alloc_shash(drbg->core->backend_cra_name, 0, 0);

	if (IS_ERR(tfm)) {

		pr_info("DRBG: could not allocate digest TFM handle\n");

		pr_info("DRBG: could not allocate digest TFM handle: %s\n",

				drbg->core->backend_cra_name);

		return PTR_ERR(tfm);

	}

	BUG_ON(drbg_blocklen(drbg) != crypto_shash_digestsize(tfm));
@@ -1686,7 +1687,8 @@ static int drbg_init_sym_kernel(struct drbg_state *drbg) 


	tfm = crypto_alloc_cipher(drbg->core->backend_cra_name, 0, 0);

	if (IS_ERR(tfm)) {

		pr_info("DRBG: could not allocate cipher TFM handle\n");

		pr_info("DRBG: could not allocate cipher TFM handle: %s\n",

				drbg->core->backend_cra_name);

		return PTR_ERR(tfm);

	}

	BUG_ON(drbg_blocklen(drbg) != crypto_cipher_blocksize(tfm));