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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 BC912C43461 for ; Thu, 17 Sep 2020 18:39:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4895C221E7 for ; Thu, 17 Sep 2020 18:39:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="Iu747+4n" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726200AbgIQSi7 (ORCPT ); Thu, 17 Sep 2020 14:38:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41088 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726566AbgIQSgL (ORCPT ); Thu, 17 Sep 2020 14:36:11 -0400 Received: from mail-wr1-x444.google.com (mail-wr1-x444.google.com [IPv6:2a00:1450:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A3F36C06178A for ; Thu, 17 Sep 2020 11:36:10 -0700 (PDT) Received: by mail-wr1-x444.google.com with SMTP id g4so3119040wrs.5 for ; Thu, 17 Sep 2020 11:36:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=jTdlzUzyc1hcRCjE509a2kDcbNHBKMDXHMkrLBJjCcg=; b=Iu747+4nadzvDfyHCyTyuRJhiIU4JEOTx7wcl9fRZmk4C2hj26XLP/pLYoNWCXkNoa jOG8/8qUQh9csSVrxPpXSLZB7w7m2/mkvWFMko8b/zg/Z7ttLd1ZC+hExrJdPx60e0PY DGPFCHfb55pFL94T4GzExTONjciAmVl0VIYj29tldHOgshEBgmTCekX5f9FxIO8xVy93 TQrf1HjVu9cDXHHOMehhlpk8KxDRSZt7TDhRQoq66hjhfqUUWsDJC5vKyCqpCfaCHW+3 JhvQWkL851NyQoea13o8i1gW2piPvOrQirFTd+7HYoZIDSFRTpLgyuneoMGuurVSFMNa nHTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=jTdlzUzyc1hcRCjE509a2kDcbNHBKMDXHMkrLBJjCcg=; b=tHAFmfquK+u/vbUuPI7nJYjQi9m0kocRX81//z9a1Fv1PdIIDbJVcqEKKyjz7JCMY4 lNtYguvh8tc2LU72tQIYtFLUPiTE9L1bJLw1SztHiHtZ9bFLBAkCBZmje3ozH7KxgjFp IVXLr5P4nocJ7C8W7TwCWb4evs/jRyeqbSw7PsJQXA1k+5gQu6m33cP2oOo7sYfspOyQ obd6+Vdntc2ayfUt+EzJTc5xA7MXU3Zassg1TU5TFe5btQCoJ+gyjQ5Vv52zIkH3Ljvh 4BSC1xENKJubdRiy8xnAPH71MFUPc4418SIWKtF5SqSW7SYsWaTUs3Os5v8bZSYLxATB yOtQ== X-Gm-Message-State: AOAM531czpSbK73kZ5iNYnYm+ii1hof9twPTcRnu0t+LADFsHVrIlYJT /wvxRqVknX9sqKKNWYDg+M2FPA== X-Google-Smtp-Source: ABdhPJwPR3kJwirxBvcg7+EKXYc7it131pIcBWGKU+Rwhgt8ETaSOml+RRDdd+wopE0SsNNZADqqUg== X-Received: by 2002:adf:cd0e:: with SMTP id w14mr36379858wrm.0.1600367768639; Thu, 17 Sep 2020 11:36:08 -0700 (PDT) Received: from localhost.localdomain ([51.15.160.169]) by smtp.googlemail.com with ESMTPSA id x16sm571901wrq.62.2020.09.17.11.36.07 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 17 Sep 2020 11:36:07 -0700 (PDT) From: Corentin Labbe To: arnd@arndb.de, davem@davemloft.net, herbert@gondor.apana.org.au, mripard@kernel.org, wens@csie.org Cc: linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, Corentin Labbe Subject: [PATCH 1/7] crypto: sun4i-ss: linearize buffers content must be kept Date: Thu, 17 Sep 2020 18:35:52 +0000 Message-Id: <1600367758-28589-2-git-send-email-clabbe@baylibre.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1600367758-28589-1-git-send-email-clabbe@baylibre.com> References: <1600367758-28589-1-git-send-email-clabbe@baylibre.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When running the non-optimized cipher function, SS produce partial random output. This is due to linearize buffers being reseted after each loop. Fixes: 8d3bcb9900ca ("crypto: sun4i-ss - reduce stack usage") Signed-off-by: Corentin Labbe --- drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c index b72de8939497..b92d175b5d2a 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c @@ -163,6 +163,8 @@ static int sun4i_ss_cipher_poll(struct skcipher_request *areq) unsigned int todo; struct sg_mapping_iter mi, mo; unsigned int oi, oo; /* offset for in and out */ + char buf[4 * SS_RX_MAX];/* buffer for linearize SG src */ + char bufo[4 * SS_TX_MAX]; /* buffer for linearize SG dst */ unsigned int ob = 0; /* offset in buf */ unsigned int obo = 0; /* offset in bufo*/ unsigned int obl = 0; /* length of data in bufo */ @@ -233,8 +235,6 @@ static int sun4i_ss_cipher_poll(struct skcipher_request *areq) while (oleft) { if (ileft) { - char buf[4 * SS_RX_MAX];/* buffer for linearize SG src */ - /* * todo is the number of consecutive 4byte word that we * can read from current SG @@ -295,8 +295,6 @@ static int sun4i_ss_cipher_poll(struct skcipher_request *areq) oo = 0; } } else { - char bufo[4 * SS_TX_MAX]; /* buffer for linearize SG dst */ - /* * read obl bytes in bufo, we read at maximum for * emptying the device -- 2.26.2