diff mbox series

[1/4] crypto: img-hash - use API helpers to setup fallback request

Message ID 20250407123604.2109561-1-ovidiu.panait.oss@gmail.com (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show
Series [1/4] crypto: img-hash - use API helpers to setup fallback request | expand

Commit Message

Ovidiu Panait April 7, 2025, 12:36 p.m. UTC 
Rather than setting up the fallback request by hand, use
ahash_request_set_callback() and ahash_request_set_crypt() API helpers
to properly setup the new request.

This also ensures that the completion callback is properly passed down
to the fallback algorithm, which avoids a crash with async fallbacks.

Signed-off-by: Ovidiu Panait <ovidiu.panait.oss@gmail.com>
---
 drivers/crypto/img-hash.c | 41 ++++++++++++++++++++++-----------------
 1 file changed, 23 insertions(+), 18 deletions(-)

Comments

Herbert Xu April 16, 2025, 7:55 a.m. UTC | #1 
On Mon, Apr 07, 2025 at 03:36:01PM +0300, Ovidiu Panait wrote:
> Rather than setting up the fallback request by hand, use
> ahash_request_set_callback() and ahash_request_set_crypt() API helpers
> to properly setup the new request.
> 
> This also ensures that the completion callback is properly passed down
> to the fallback algorithm, which avoids a crash with async fallbacks.
> 
> Signed-off-by: Ovidiu Panait <ovidiu.panait.oss@gmail.com>
> ---
>  drivers/crypto/img-hash.c | 41 ++++++++++++++++++++++-----------------
>  1 file changed, 23 insertions(+), 18 deletions(-)

Patches 1-2,4 applied.  Thanks.
Corentin Labbe April 16, 2025, 9:55 a.m. UTC | #2 
Le Wed, Apr 16, 2025 at 03:55:39PM +0800, Herbert Xu a écrit :
> On Mon, Apr 07, 2025 at 03:36:01PM +0300, Ovidiu Panait wrote:
> > Rather than setting up the fallback request by hand, use
> > ahash_request_set_callback() and ahash_request_set_crypt() API helpers
> > to properly setup the new request.
> > 
> > This also ensures that the completion callback is properly passed down
> > to the fallback algorithm, which avoids a crash with async fallbacks.
> > 
> > Signed-off-by: Ovidiu Panait <ovidiu.panait.oss@gmail.com>
> > ---
> >  drivers/crypto/img-hash.c | 41 ++++++++++++++++++++++-----------------
> >  1 file changed, 23 insertions(+), 18 deletions(-)
> 
> Patches 1-2,4 applied.  Thanks.

You can merge sun8i-ss patch, it is ok.

Could you add my tested-by on rk3328 patch also ?

Thanks
diff mbox series

Patch

diff --git a/drivers/crypto/img-hash.c b/drivers/crypto/img-hash.c
index 1dc2378aa88b..e050f5ff5efb 100644
--- a/drivers/crypto/img-hash.c
+++ b/drivers/crypto/img-hash.c
@@ -491,8 +491,9 @@  static int img_hash_init(struct ahash_request *req)
 	struct img_hash_ctx *ctx = crypto_ahash_ctx(tfm);
 
 	ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback);
-	rctx->fallback_req.base.flags =	req->base.flags
-		& CRYPTO_TFM_REQ_MAY_SLEEP;
+	ahash_request_set_callback(&rctx->fallback_req,
+				   req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP,
+				   req->base.complete, req->base.data);
 
 	return crypto_ahash_init(&rctx->fallback_req);
 }
@@ -555,10 +556,10 @@  static int img_hash_update(struct ahash_request *req)
 	struct img_hash_ctx *ctx = crypto_ahash_ctx(tfm);
 
 	ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback);
-	rctx->fallback_req.base.flags = req->base.flags
-		& CRYPTO_TFM_REQ_MAY_SLEEP;
-	rctx->fallback_req.nbytes = req->nbytes;
-	rctx->fallback_req.src = req->src;
+	ahash_request_set_callback(&rctx->fallback_req,
+				   req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP,
+				   req->base.complete, req->base.data);
+	ahash_request_set_crypt(&rctx->fallback_req, req->src, NULL, req->nbytes);
 
 	return crypto_ahash_update(&rctx->fallback_req);
 }
@@ -570,9 +571,10 @@  static int img_hash_final(struct ahash_request *req)
 	struct img_hash_ctx *ctx = crypto_ahash_ctx(tfm);
 
 	ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback);
-	rctx->fallback_req.base.flags = req->base.flags
-		& CRYPTO_TFM_REQ_MAY_SLEEP;
-	rctx->fallback_req.result = req->result;
+	ahash_request_set_callback(&rctx->fallback_req,
+				   req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP,
+				   req->base.complete, req->base.data);
+	ahash_request_set_crypt(&rctx->fallback_req, NULL, req->result, 0);
 
 	return crypto_ahash_final(&rctx->fallback_req);
 }
@@ -584,11 +586,12 @@  static int img_hash_finup(struct ahash_request *req)
 	struct img_hash_ctx *ctx = crypto_ahash_ctx(tfm);
 
 	ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback);
-	rctx->fallback_req.base.flags = req->base.flags
-		& CRYPTO_TFM_REQ_MAY_SLEEP;
-	rctx->fallback_req.nbytes = req->nbytes;
-	rctx->fallback_req.src = req->src;
-	rctx->fallback_req.result = req->result;
+	ahash_request_set_callback(&rctx->fallback_req,
+				   req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP,
+				   req->base.complete, req->base.data);
+	ahash_request_set_crypt(&rctx->fallback_req, req->src, req->result,
+				req->nbytes);
+
 
 	return crypto_ahash_finup(&rctx->fallback_req);
 }
@@ -600,8 +603,9 @@  static int img_hash_import(struct ahash_request *req, const void *in)
 	struct img_hash_ctx *ctx = crypto_ahash_ctx(tfm);
 
 	ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback);
-	rctx->fallback_req.base.flags = req->base.flags
-		& CRYPTO_TFM_REQ_MAY_SLEEP;
+	ahash_request_set_callback(&rctx->fallback_req,
+				   req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP,
+				   req->base.complete, req->base.data);
 
 	return crypto_ahash_import(&rctx->fallback_req, in);
 }
@@ -613,8 +617,9 @@  static int img_hash_export(struct ahash_request *req, void *out)
 	struct img_hash_ctx *ctx = crypto_ahash_ctx(tfm);
 
 	ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback);
-	rctx->fallback_req.base.flags = req->base.flags
-		& CRYPTO_TFM_REQ_MAY_SLEEP;
+	ahash_request_set_callback(&rctx->fallback_req,
+				   req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP,
+				   req->base.complete, req->base.data);
 
 	return crypto_ahash_export(&rctx->fallback_req, out);
 }