From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-eopbgr140070.outbound.protection.outlook.com ([40.107.14.70]:64918 "EHLO EUR01-VE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726970AbgHGQWR (ORCPT ); Fri, 7 Aug 2020 12:22:17 -0400 From: Andrei Botila Subject: [PATCH 12/22] crypto: bcm - add check for xts input length equal to zero Date: Fri, 7 Aug 2020 19:20:00 +0300 Message-Id: <20200807162010.18979-13-andrei.botila@oss.nxp.com> In-Reply-To: <20200807162010.18979-1-andrei.botila@oss.nxp.com> References: <20200807162010.18979-1-andrei.botila@oss.nxp.com> Content-Type: text/plain MIME-Version: 1.0 Sender: linux-s390-owner@vger.kernel.org List-ID: To: Herbert Xu , "David S. Miller" Cc: linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, x86@kernel.org, linux-arm-kernel@axis.com, Andrei Botila , Zhang Shengju , Tang Bin From: Andrei Botila Standardize the way input lengths equal to 0 are handled in all skcipher algorithms. All the algorithms return 0 for input lengths equal to zero. Cc: Zhang Shengju Cc: Tang Bin Signed-off-by: Andrei Botila --- drivers/crypto/bcm/cipher.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/crypto/bcm/cipher.c b/drivers/crypto/bcm/cipher.c index 8a7fa1ae1ade..8a6f225f4db7 100644 --- a/drivers/crypto/bcm/cipher.c +++ b/drivers/crypto/bcm/cipher.c @@ -1754,6 +1754,9 @@ static int skcipher_enqueue(struct skcipher_request *req, bool encrypt) crypto_skcipher_ctx(crypto_skcipher_reqtfm(req)); int err; + if (!req->cryptlen && ctx->cipher.mode == CIPHER_MODE_XTS) + return 0; + flow_log("%s() enc:%u\n", __func__, encrypt); rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | -- 2.17.1