From patchwork Mon Jan 4 17:21:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Cabiddu, Giovanni" X-Patchwork-Id: 356469 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 83E9FC433E0 for ; Mon, 4 Jan 2021 17:22:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4FDFD224F4 for ; Mon, 4 Jan 2021 17:22:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726396AbhADRW5 (ORCPT ); Mon, 4 Jan 2021 12:22:57 -0500 Received: from mga09.intel.com ([134.134.136.24]:43986 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726363AbhADRW5 (ORCPT ); Mon, 4 Jan 2021 12:22:57 -0500 IronPort-SDR: JalIRO9FI+5WdJHrd8dh/fCYEaXmqPMzHr6Orz5/qCJfrJT79agk2UFTTdT7W7eDfYqWCQRuJs ipwMLHf3puQA== X-IronPort-AV: E=McAfee;i="6000,8403,9854"; a="177135628" X-IronPort-AV: E=Sophos;i="5.78,474,1599548400"; d="scan'208";a="177135628" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jan 2021 09:22:05 -0800 IronPort-SDR: 0kjoMjHkpm+s4RNdyqJHDmHphSB3S8Jf360ViQukJ3k0lDCRr8ksI7vAWKEWmFvLHYu8wDoLTC 5gQM52ENJAAA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,474,1599548400"; d="scan'208";a="345962818" Received: from silpixa00400314.ir.intel.com (HELO silpixa00400314.ger.corp.intel.com) ([10.237.222.51]) by orsmga003.jf.intel.com with ESMTP; 04 Jan 2021 09:22:04 -0800 From: Giovanni Cabiddu To: herbert@gondor.apana.org.au Cc: linux-crypto@vger.kernel.org, qat-linux@intel.com, Adam Guerin , Giovanni Cabiddu Subject: [PATCH 1/3] crypto: qat - fix potential spectre issue Date: Mon, 4 Jan 2021 17:21:57 +0000 Message-Id: <20210104172159.15489-2-giovanni.cabiddu@intel.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210104172159.15489-1-giovanni.cabiddu@intel.com> References: <20210104172159.15489-1-giovanni.cabiddu@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Adam Guerin Sanitize ring_num value coming from configuration (and potentially from user space) before it is used as index in the banks array. This issue was detected by smatch: drivers/crypto/qat/qat_common/adf_transport.c:233 adf_create_ring() warn: potential spectre issue 'bank->rings' [r] (local cap) Signed-off-by: Adam Guerin Reviewed-by: Giovanni Cabiddu Signed-off-by: Giovanni Cabiddu --- drivers/crypto/qat/qat_common/adf_transport.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/crypto/qat/qat_common/adf_transport.c b/drivers/crypto/qat/qat_common/adf_transport.c index 5a7030acdc33..888c1e047295 100644 --- a/drivers/crypto/qat/qat_common/adf_transport.c +++ b/drivers/crypto/qat/qat_common/adf_transport.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) /* Copyright(c) 2014 - 2020 Intel Corporation */ #include +#include #include "adf_accel_devices.h" #include "adf_transport_internal.h" #include "adf_transport_access_macros.h" @@ -246,6 +247,7 @@ int adf_create_ring(struct adf_accel_dev *accel_dev, const char *section, return -EFAULT; } + ring_num = array_index_nospec(ring_num, num_rings_per_bank); bank = &transport_data->banks[bank_num]; if (adf_reserve_ring(bank, ring_num)) { dev_err(&GET_DEV(accel_dev), "Ring %d, %s already exists.\n",