From: Eric Biggers <[email protected]> shash_ahash_digest(), which is the ->digest() method for ahash tfms that use an shash algorithm, has an optimization where crypto_shash_digest() is called if the data is in a single page. But an off-by-one error prevented this path from being taken unless the user happened to provide extra data in the scatterlist. Fix it.
Signed-off-by: Eric Biggers <[email protected]> --- crypto/shash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/crypto/shash.c b/crypto/shash.c index 15b369c4745f6..b85930e9a7a2e 100644 --- a/crypto/shash.c +++ b/crypto/shash.c @@ -307,7 +307,7 @@ int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc) if (nbytes && (sg = req->src, offset = sg->offset, - nbytes < min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset))) { + nbytes <= min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset))) { void *data; data = kmap_atomic(sg_page(sg)); -- 2.21.0
