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authorKees Cook <keescook@chromium.org>2018-09-19 05:10:51 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2018-09-28 07:46:08 +0300
commit8d605398425843c7ce3c0e9a0434d832d3bd54cc (patch)
tree9367982359561def8ee697e06669e2a8a15c99f0 /crypto/authencesn.c
parent5c525640ef455b23ce911ac71eb22c7256031b9a (diff)
downloadlinux-8d605398425843c7ce3c0e9a0434d832d3bd54cc.tar.xz
crypto: null - Remove VLA usage of skcipher
In the quest to remove all stack VLA usage from the kernel[1], this replaces struct crypto_skcipher and SKCIPHER_REQUEST_ON_STACK() usage with struct crypto_sync_skcipher and SYNC_SKCIPHER_REQUEST_ON_STACK(), which uses a fixed stack size. [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/authencesn.c')
-rw-r--r--crypto/authencesn.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/crypto/authencesn.c b/crypto/authencesn.c
index 50b804747e20..80a25cc04aec 100644
--- a/crypto/authencesn.c
+++ b/crypto/authencesn.c
@@ -36,7 +36,7 @@ struct crypto_authenc_esn_ctx {
unsigned int reqoff;
struct crypto_ahash *auth;
struct crypto_skcipher *enc;
- struct crypto_skcipher *null;
+ struct crypto_sync_skcipher *null;
};
struct authenc_esn_request_ctx {
@@ -183,9 +183,9 @@ static int crypto_authenc_esn_copy(struct aead_request *req, unsigned int len)
{
struct crypto_aead *authenc_esn = crypto_aead_reqtfm(req);
struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(authenc_esn);
- SKCIPHER_REQUEST_ON_STACK(skreq, ctx->null);
+ SYNC_SKCIPHER_REQUEST_ON_STACK(skreq, ctx->null);
- skcipher_request_set_tfm(skreq, ctx->null);
+ skcipher_request_set_sync_tfm(skreq, ctx->null);
skcipher_request_set_callback(skreq, aead_request_flags(req),
NULL, NULL);
skcipher_request_set_crypt(skreq, req->src, req->dst, len, NULL);
@@ -341,7 +341,7 @@ static int crypto_authenc_esn_init_tfm(struct crypto_aead *tfm)
struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(tfm);
struct crypto_ahash *auth;
struct crypto_skcipher *enc;
- struct crypto_skcipher *null;
+ struct crypto_sync_skcipher *null;
int err;
auth = crypto_spawn_ahash(&ictx->auth);