From a70c522520d967844c01fa01459edc698fc54544 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Wed, 15 Jul 2009 20:39:05 +0800
Subject: [PATCH] crypto: ahash - Fix setkey crash
When the alignment check was made unconditional for ahash we
may end up crashing on shash algorithms because we're always
calling alg->setkey instead of tfm->setkey.
This patch fixes it.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
crypto/ahash.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/crypto/ahash.c b/crypto/ahash.c
index ac0798d2824e8..28a33d06c274e 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -145,7 +145,6 @@ int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
- struct ahash_alg *ahash = crypto_ahash_alg(tfm);
unsigned long alignmask = crypto_ahash_alignmask(tfm);
int ret;
u8 *buffer, *alignbuffer;
@@ -158,7 +157,7 @@ static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen);
- ret = ahash->setkey(tfm, alignbuffer, keylen);
+ ret = tfm->setkey(tfm, alignbuffer, keylen);
kzfree(buffer);
return ret;
}
@@ -166,13 +165,12 @@ static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
- struct ahash_alg *ahash = crypto_ahash_alg(tfm);
unsigned long alignmask = crypto_ahash_alignmask(tfm);
if ((unsigned long)key & alignmask)
return ahash_setkey_unaligned(tfm, key, keylen);
- return ahash->setkey(tfm, key, keylen);
+ return tfm->setkey(tfm, key, keylen);
}
EXPORT_SYMBOL_GPL(crypto_ahash_setkey);
--
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