[PATCH 3.14 17/29] crypto: ghash-clmulni: specify context size for ghash async algorithm

Greg Kroah-Hartman
2015-09-19T17:28:04Z

From: Andrey Ryabinin <aryabinin@odin.com>

commit 71c6da846be478a61556717ef1ee1cea91f5d6a8 upstream.

Currently context size (cra_ctxsize) doesn't specified for
ghash_async_alg. Which means it's zero. Thus crypto_create_tfm()
doesn't allocate needed space for ghash_async_ctx, so any
read/write to ctx (e.g. in ghash_async_init_tfm()) is not valid.

Signed-off-by: Andrey Ryabinin <aryabinin@odin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
arch/x86/crypto/ghash-clmulni-intel_glue.c | 1 +
1 file changed, 1 insertion(+)

--- a/arch/x86/crypto/ghash-clmulni-intel_glue.c
+++ b/arch/x86/crypto/ghash-clmulni-intel_glue.c
@@ -291,6 +291,7 @@ static struct ahash_alg ghash_async_alg
.cra_name = "ghash",
.cra_driver_name = "ghash-clmulni",
.cra_priority = 400,
+ .cra_ctxsize = sizeof(struct ghash_async_ctx),
.cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC,
.cra_blocksize = GHASH_BLOCK_SIZE,
.cra_type = &crypto_ahash_type,