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Subject[PATCH AUTOSEL for 4.14 057/110] crypto: inside-secure - fix request allocations in invalidation path
Date
From: Antoine Ténart <antoine.tenart@free-electrons.com>

[ Upstream commit 7cad2fabd5691dbb17762877d4e7f236fe4bc181 ]

This patch makes use of the SKCIPHER_REQUEST_ON_STACK and
AHASH_REQUEST_ON_STACK helpers to allocate enough memory to contain both
the crypto request structures and their embedded context (__ctx).

Fixes: 1b44c5a60c13 ("crypto: inside-secure - add SafeXcel EIP197 crypto engine driver")
Suggested-by: Ofer Heifetz <oferh@marvell.com>
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
drivers/crypto/inside-secure/safexcel_cipher.c | 16 ++++++++--------
drivers/crypto/inside-secure/safexcel_hash.c | 14 +++++++-------
2 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c
index 9ea24868d860..fcc0a606d748 100644
--- a/drivers/crypto/inside-secure/safexcel_cipher.c
+++ b/drivers/crypto/inside-secure/safexcel_cipher.c
@@ -422,25 +422,25 @@ static int safexcel_cipher_exit_inv(struct crypto_tfm *tfm)
{
struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
struct safexcel_crypto_priv *priv = ctx->priv;
- struct skcipher_request req;
- struct safexcel_cipher_req *sreq = skcipher_request_ctx(&req);
+ SKCIPHER_REQUEST_ON_STACK(req, __crypto_skcipher_cast(tfm));
+ struct safexcel_cipher_req *sreq = skcipher_request_ctx(req);
struct safexcel_inv_result result = {};
int ring = ctx->base.ring;

- memset(&req, 0, sizeof(struct skcipher_request));
+ memset(req, 0, sizeof(struct skcipher_request));

/* create invalidation request */
init_completion(&result.completion);
- skcipher_request_set_callback(&req, CRYPTO_TFM_REQ_MAY_BACKLOG,
- safexcel_inv_complete, &result);
+ skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ safexcel_inv_complete, &result);

- skcipher_request_set_tfm(&req, __crypto_skcipher_cast(tfm));
- ctx = crypto_tfm_ctx(req.base.tfm);
+ skcipher_request_set_tfm(req, __crypto_skcipher_cast(tfm));
+ ctx = crypto_tfm_ctx(req->base.tfm);
ctx->base.exit_inv = true;
sreq->needs_inv = true;

spin_lock_bh(&priv->ring[ring].queue_lock);
- crypto_enqueue_request(&priv->ring[ring].queue, &req.base);
+ crypto_enqueue_request(&priv->ring[ring].queue, &req->base);
spin_unlock_bh(&priv->ring[ring].queue_lock);

if (!priv->ring[ring].need_dequeue)
diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c
index 61633b9a749d..d626aa485a76 100644
--- a/drivers/crypto/inside-secure/safexcel_hash.c
+++ b/drivers/crypto/inside-secure/safexcel_hash.c
@@ -470,25 +470,25 @@ static int safexcel_ahash_exit_inv(struct crypto_tfm *tfm)
{
struct safexcel_ahash_ctx *ctx = crypto_tfm_ctx(tfm);
struct safexcel_crypto_priv *priv = ctx->priv;
- struct ahash_request req;
- struct safexcel_ahash_req *rctx = ahash_request_ctx(&req);
+ AHASH_REQUEST_ON_STACK(req, __crypto_ahash_cast(tfm));
+ struct safexcel_ahash_req *rctx = ahash_request_ctx(req);
struct safexcel_inv_result result = {};
int ring = ctx->base.ring;

- memset(&req, 0, sizeof(struct ahash_request));
+ memset(req, 0, sizeof(struct ahash_request));

/* create invalidation request */
init_completion(&result.completion);
- ahash_request_set_callback(&req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
safexcel_inv_complete, &result);

- ahash_request_set_tfm(&req, __crypto_ahash_cast(tfm));
- ctx = crypto_tfm_ctx(req.base.tfm);
+ ahash_request_set_tfm(req, __crypto_ahash_cast(tfm));
+ ctx = crypto_tfm_ctx(req->base.tfm);
ctx->base.exit_inv = true;
rctx->needs_inv = true;

spin_lock_bh(&priv->ring[ring].queue_lock);
- crypto_enqueue_request(&priv->ring[ring].queue, &req.base);
+ crypto_enqueue_request(&priv->ring[ring].queue, &req->base);
spin_unlock_bh(&priv->ring[ring].queue_lock);

if (!priv->ring[ring].need_dequeue)
--
2.11.0
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