From 6650c4de681ee90ea6da1fc34fb913f60e9bb008 Mon Sep 17 00:00:00 2001 From: Salvatore Mesoraca Date: Mon, 9 Apr 2018 15:54:47 +0200 Subject: crypto: remove several VLAs We avoid various VLAs[1] by using constant expressions for block size and alignment mask. [1] http://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com Signed-off-by: Salvatore Mesoraca Signed-off-by: Herbert Xu --- crypto/cfb.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'crypto/cfb.c') diff --git a/crypto/cfb.c b/crypto/cfb.c index 94ee39bed758..a0d68c09e1b9 100644 --- a/crypto/cfb.c +++ b/crypto/cfb.c @@ -53,9 +53,8 @@ static void crypto_cfb_encrypt_one(struct crypto_skcipher *tfm, static void crypto_cfb_final(struct skcipher_walk *walk, struct crypto_skcipher *tfm) { - const unsigned int bsize = crypto_cfb_bsize(tfm); const unsigned long alignmask = crypto_skcipher_alignmask(tfm); - u8 tmp[bsize + alignmask]; + u8 tmp[MAX_CIPHER_BLOCKSIZE + MAX_CIPHER_ALIGNMASK]; u8 *stream = PTR_ALIGN(tmp + 0, alignmask + 1); u8 *src = walk->src.virt.addr; u8 *dst = walk->dst.virt.addr; @@ -94,7 +93,7 @@ static int crypto_cfb_encrypt_inplace(struct skcipher_walk *walk, unsigned int nbytes = walk->nbytes; u8 *src = walk->src.virt.addr; u8 *iv = walk->iv; - u8 tmp[bsize]; + u8 tmp[MAX_CIPHER_BLOCKSIZE]; do { crypto_cfb_encrypt_one(tfm, iv, tmp); @@ -164,7 +163,7 @@ static int crypto_cfb_decrypt_inplace(struct skcipher_walk *walk, unsigned int nbytes = walk->nbytes; u8 *src = walk->src.virt.addr; u8 *iv = walk->iv; - u8 tmp[bsize]; + u8 tmp[MAX_CIPHER_BLOCKSIZE]; do { crypto_cfb_encrypt_one(tfm, iv, tmp); -- cgit