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| author | Eric Biggers <ebiggers@google.com> | 2019-04-14 16:23:33 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-04-18 22:15:04 +0800 |
| commit | 67cb60e4efe7bd9d7a7afb8297f58afe25c28919 (patch) | |
| tree | 793814ab8b57c0c592bc5fee608d3e51db39f4f5 /crypto | |
| parent | 626ddb2fbe7931a2996bd7fe88bd1ffd5daf7143 (diff) | |
| download | linux-67cb60e4efe7bd9d7a7afb8297f58afe25c28919.tar.gz linux-67cb60e4efe7bd9d7a7afb8297f58afe25c28919.tar.bz2 linux-67cb60e4efe7bd9d7a7afb8297f58afe25c28919.zip | |
crypto: shash - fix missed optimization in shash_ahash_digest()
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 <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/shash.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/shash.c b/crypto/shash.c index 15b369c4745f..b85930e9a7a2 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)); |