X-Git-Url: http://git.agner.ch/gitweb/?a=blobdiff_plain;f=crypto%2Fauthenc.c;h=b9884ee0adb679e2dd77fa674915b586952cfc37;hb=7eb1053fd00a8f0e2263697638e17da8a251aa74;hp=05eb32e0d9495015f1a7970a079f882d0762a5c7;hpb=77933c354c6c0e4b6abcb417518e84b8fd9b7ae4;p=linux-drm-fsl-dcu.git

diff --git a/crypto/authenc.c b/crypto/authenc.c
index 05eb32e0d949..b9884ee0adb6 100644
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -181,6 +181,7 @@ static void authenc_verify_ahash_update_done(struct crypto_async_request *areq,
 	struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc);
 	struct authenc_request_ctx *areq_ctx = aead_request_ctx(req);
 	struct ahash_request *ahreq = (void *)(areq_ctx->tail + ctx->reqoff);
+	unsigned int cryptlen = req->cryptlen;
 
 	if (err)
 		goto out;
@@ -196,6 +197,7 @@ static void authenc_verify_ahash_update_done(struct crypto_async_request *areq,
 		goto out;
 
 	authsize = crypto_aead_authsize(authenc);
+	cryptlen -= authsize;
 	ihash = ahreq->result + authsize;
 	scatterwalk_map_and_copy(ihash, areq_ctx->sg, areq_ctx->cryptlen,
 				 authsize, 0);
@@ -209,7 +211,7 @@ static void authenc_verify_ahash_update_done(struct crypto_async_request *areq,
 	ablkcipher_request_set_callback(abreq, aead_request_flags(req),
 					req->base.complete, req->base.data);
 	ablkcipher_request_set_crypt(abreq, req->src, req->dst,
-				     req->cryptlen, req->iv);
+				     cryptlen, req->iv);
 
 	err = crypto_ablkcipher_decrypt(abreq);
 
@@ -228,11 +230,13 @@ static void authenc_verify_ahash_done(struct crypto_async_request *areq,
 	struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc);
 	struct authenc_request_ctx *areq_ctx = aead_request_ctx(req);
 	struct ahash_request *ahreq = (void *)(areq_ctx->tail + ctx->reqoff);
+	unsigned int cryptlen = req->cryptlen;
 
 	if (err)
 		goto out;
 
 	authsize = crypto_aead_authsize(authenc);
+	cryptlen -= authsize;
 	ihash = ahreq->result + authsize;
 	scatterwalk_map_and_copy(ihash, areq_ctx->sg, areq_ctx->cryptlen,
 				 authsize, 0);
@@ -246,7 +250,7 @@ static void authenc_verify_ahash_done(struct crypto_async_request *areq,
 	ablkcipher_request_set_callback(abreq, aead_request_flags(req),
 					req->base.complete, req->base.data);
 	ablkcipher_request_set_crypt(abreq, req->src, req->dst,
-				     req->cryptlen, req->iv);
+				     cryptlen, req->iv);
 
 	err = crypto_ablkcipher_decrypt(abreq);