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authorLinus Torvalds <torvalds@linux-foundation.org>2008-04-02 07:43:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-02 07:43:37 -0700
commit8774b7f63be0d1b237bc30d49b6486f7691e2ed4 (patch)
tree2e0b9587fd3bb93a9166ad46ac7f928a41c59bb8
parenta5f37c3252b174efdcdd808797a7c529064c95c0 (diff)
parent1edcf2e1ee2babb011cfca80ad9d202e9c491669 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: [CRYPTO] xcbc: Fix crash when ipsec uses xcbc-mac with big data chunk
-rw-r--r--crypto/xcbc.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/crypto/xcbc.c b/crypto/xcbc.c
index 2feb0f239c3..b63b633e549 100644
--- a/crypto/xcbc.c
+++ b/crypto/xcbc.c
@@ -116,13 +116,11 @@ static int crypto_xcbc_digest_update2(struct hash_desc *pdesc,
struct crypto_xcbc_ctx *ctx = crypto_hash_ctx_aligned(parent);
struct crypto_cipher *tfm = ctx->child;
int bs = crypto_hash_blocksize(parent);
- unsigned int i = 0;
- do {
-
- struct page *pg = sg_page(&sg[i]);
- unsigned int offset = sg[i].offset;
- unsigned int slen = sg[i].length;
+ for (;;) {
+ struct page *pg = sg_page(sg);
+ unsigned int offset = sg->offset;
+ unsigned int slen = sg->length;
if (unlikely(slen > nbytes))
slen = nbytes;
@@ -182,8 +180,11 @@ static int crypto_xcbc_digest_update2(struct hash_desc *pdesc,
offset = 0;
pg++;
}
- i++;
- } while (nbytes>0);
+
+ if (!nbytes)
+ break;
+ sg = scatterwalk_sg_next(sg);
+ }
return 0;
}