crypto: cryptd - initialize child shash_desc on import

commit 0bd2223594a4dcddc1e34b15774a3a4776f7749e upstream.

When calling .import() on a cryptd ahash_request, the structure members
that describe the child transform in the shash_desc need to be initialized
like they are when calling .init()

Cc: stable@vger.kernel.org
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>

diff --git a/crypto/cryptd.c b/crypto/cryptd.c
index 75c415d370869e5ab121e8678ab8caa940e8e1d3..d85fab975514c0b493ed84b2264c7c4d966f7d2e 100644 (file)
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -565,9 +565,14 @@ static int cryptd_hash_export(struct ahash_request *req, void *out)
 
 static int cryptd_hash_import(struct ahash_request *req, const void *in)
 {
-       struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
+       struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+       struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm);
+       struct shash_desc *desc = cryptd_shash_desc(req);
+
+       desc->tfm = ctx->child;
+       desc->flags = req->base.flags;
 
-       return crypto_shash_import(&rctx->desc, in);
+       return crypto_shash_import(desc, in);
 }
 
 static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,