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>

1 files changed, 2 insertions, 2 deletions

diff --git a/crypto/echainiv.c b/crypto/echainiv.c
index 45819e6015bf..77e607fdbfb7 100644
--- a/crypto/echainiv.c
+++ b/crypto/echainiv.c
@@ -47,9 +47,9 @@ static int echainiv_encrypt(struct aead_request *req)
         info = req->iv;
 
         if (req->src != req->dst) {
-                SKCIPHER_REQUEST_ON_STACK(nreq, ctx->sknull);
+                SYNC_SKCIPHER_REQUEST_ON_STACK(nreq, ctx->sknull);
 
-                skcipher_request_set_tfm(nreq, ctx->sknull);
+                skcipher_request_set_sync_tfm(nreq, ctx->sknull);
                 skcipher_request_set_callback(nreq, req->base.flags,
                                               NULL, NULL);
                 skcipher_request_set_crypt(nreq, req->src, req->dst,