From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E18E7C2D0C3 for ; Tue, 31 Dec 2019 03:21:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AAA992071E for ; Tue, 31 Dec 2019 03:21:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1577762484; bh=uaXBP7mExZ7SBeZdWOjWrbs+yabYfi8TrplvLc4ha8A=; h=From:To:Subject:Date:In-Reply-To:References:List-ID:From; b=v1lffWfROFreNSmz4rIQ2R/56VhjAGbpHbqrJkDkEUVV4RN9DGIHf5EOFr17DtNH2 yuUO3uiyeC+3HboX8p6ubpvapCfUa66B00G67aoFH4lzDguw8aPBNZ+dXvbmVZhf62 Kxk0FuL+0feD02wpvYS2CtYaKMN8O7j/sQlJoEa0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726302AbfLaDUy (ORCPT ); Mon, 30 Dec 2019 22:20:54 -0500 Received: from mail.kernel.org ([198.145.29.99]:59160 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725813AbfLaDUy (ORCPT ); Mon, 30 Dec 2019 22:20:54 -0500 Received: from zzz.tds (h75-100-12-111.burkwi.broadband.dynamic.tds.net [75.100.12.111]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9ED7720722 for ; Tue, 31 Dec 2019 03:20:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1577762453; bh=uaXBP7mExZ7SBeZdWOjWrbs+yabYfi8TrplvLc4ha8A=; h=From:To:Subject:Date:In-Reply-To:References:From; b=RNGtZzhPJvE30J3PuRLrXl92JHSFcCFLtuwDGX0F6dolxb9ULQaAsVBGlR1fI5WAE tVp+IkZ8DJ2YJA5qvm+ZBhTQ2kF0MzVcbe1U/+l0iMWuthkmrzy6atU5Lk7Zt4E8GS ka1KvyBYdvGwfazLuIhuzaR+saGD+QUaqiSa8HYM= From: Eric Biggers To: linux-crypto@vger.kernel.org Subject: [PATCH 1/8] crypto: chelsio - fix writing tfm flags to wrong place Date: Mon, 30 Dec 2019 21:19:31 -0600 Message-Id: <20191231031938.241705-2-ebiggers@kernel.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191231031938.241705-1-ebiggers@kernel.org> References: <20191231031938.241705-1-ebiggers@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Eric Biggers The chelsio crypto driver is casting 'struct crypto_aead' directly to 'struct crypto_tfm', which is incorrect because the crypto_tfm isn't the first field of 'struct crypto_aead'. Consequently, the calls to crypto_tfm_set_flags() are modifying some other field in the struct. Also, the driver is setting CRYPTO_TFM_RES_BAD_KEY_LEN in ->setauthsize(), not just in ->setkey(). This is incorrect since this flag is for bad key lengths, not for bad authentication tag lengths. Fix these bugs by removing the broken crypto_tfm_set_flags() calls from ->setauthsize() and by fixing them in ->setkey(). Fixes: 324429d74127 ("chcr: Support for Chelsio's Crypto Hardware") Cc: # v4.9+ Cc: Atul Gupta Signed-off-by: Eric Biggers --- drivers/crypto/chelsio/chcr_algo.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c index 586dbc69d0cd..5b7dbe7cdb17 100644 --- a/drivers/crypto/chelsio/chcr_algo.c +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -3196,9 +3196,6 @@ static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize) aeadctx->mayverify = VERIFY_SW; break; default: - - crypto_tfm_set_flags((struct crypto_tfm *) tfm, - CRYPTO_TFM_RES_BAD_KEY_LEN); return -EINVAL; } return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); @@ -3223,8 +3220,6 @@ static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm, aeadctx->mayverify = VERIFY_HW; break; default: - crypto_tfm_set_flags((struct crypto_tfm *)tfm, - CRYPTO_TFM_RES_BAD_KEY_LEN); return -EINVAL; } return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); @@ -3265,8 +3260,6 @@ static int chcr_ccm_setauthsize(struct crypto_aead *tfm, aeadctx->mayverify = VERIFY_HW; break; default: - crypto_tfm_set_flags((struct crypto_tfm *)tfm, - CRYPTO_TFM_RES_BAD_KEY_LEN); return -EINVAL; } return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); @@ -3291,8 +3284,7 @@ static int chcr_ccm_common_setkey(struct crypto_aead *aead, ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; } else { - crypto_tfm_set_flags((struct crypto_tfm *)aead, - CRYPTO_TFM_RES_BAD_KEY_LEN); + crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN); aeadctx->enckey_len = 0; return -EINVAL; } @@ -3330,8 +3322,7 @@ static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key, int error; if (keylen < 3) { - crypto_tfm_set_flags((struct crypto_tfm *)aead, - CRYPTO_TFM_RES_BAD_KEY_LEN); + crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN); aeadctx->enckey_len = 0; return -EINVAL; } @@ -3381,8 +3372,7 @@ static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key, } else if (keylen == AES_KEYSIZE_256) { ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; } else { - crypto_tfm_set_flags((struct crypto_tfm *)aead, - CRYPTO_TFM_RES_BAD_KEY_LEN); + crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN); pr_err("GCM: Invalid key length %d\n", keylen); ret = -EINVAL; goto out; -- 2.24.1