| Message ID | 20190502104757.22234-1-atul.gupta@chelsio.com (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Herbert Xu |
| Headers | show |
| Series | [1/4] crypto:chelsio Fix NULL pointer dereference | expand |
diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c index 73bbd49..177f572 100644 --- a/drivers/crypto/chelsio/chcr_algo.c +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -1094,8 +1094,8 @@ static int chcr_final_cipher_iv(struct ablkcipher_request *req, int ret = 0; if (subtype == CRYPTO_ALG_SUB_TYPE_CTR) - ctr_add_iv(iv, req->info, (reqctx->processed / - AES_BLOCK_SIZE)); + ctr_add_iv(iv, req->info, DIV_ROUND_UP(reqctx->processed, + AES_BLOCK_SIZE)); else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS) ret = chcr_update_tweak(req, iv, 1); else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
The partial block should count as one and appropriately appended to IV. eg 499B for AES CTR should count 32 block than 31 and correct count value is updated in iv out. Signed-off-by: Atul Gupta <atul.gupta@chelsio.com> --- drivers/crypto/chelsio/chcr_algo.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)