From patchwork Thu Oct 5 19:51:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Joseph, Jithu" X-Patchwork-Id: 13410759 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 937FAE92734 for ; Thu, 5 Oct 2023 19:55:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231886AbjJETzy (ORCPT ); Thu, 5 Oct 2023 15:55:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41286 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231828AbjJETzt (ORCPT ); Thu, 5 Oct 2023 15:55:49 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2F50E8; Thu, 5 Oct 2023 12:55:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1696535749; x=1728071749; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=QMn5zpNP8+ffHcP9eBj+rXkV8aG9ATI7kUf+LVAcPHo=; b=fd42rx4u0SehggpgZ+MxmRhqMCWlJkvoPkJzReImALVsTcF5PnQIjOym fw+LZb5DLIgS3Sj+FszX+j3StV73Wsq+DSPR9j1m9NZsFPT1ObhK4s4mz Gv4JEG40ARlGDnPUOvO+nx6zUHVwyt4Cbp8akvsILE0FVW/83MF9pg8/Z ObzeNFs1zzY+2qIBkJBW82zLIfS+tq/d35fTAI3ni3+4Ls9JnaglNZHqN zxQJQfLbhcI2wL4lGyGI1ytZcIZ8LdyBB0RI3xXVT8xQLrZkU+zb7pSkh bPUPIPFAoUgX9/k8H1wi8EdLrR3Ls8ZDlBGxohvjUXPrv9oSQ8n0nF5la A==; X-IronPort-AV: E=McAfee;i="6600,9927,10854"; a="386432585" X-IronPort-AV: E=Sophos;i="6.03,203,1694761200"; d="scan'208";a="386432585" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Oct 2023 12:55:45 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10854"; a="755600134" X-IronPort-AV: E=Sophos;i="6.03,203,1694761200"; d="scan'208";a="755600134" Received: from jithujos.sc.intel.com ([172.25.103.66]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Oct 2023 12:55:44 -0700 From: Jithu Joseph To: ilpo.jarvinen@linux.intel.com, hdegoede@redhat.com, markgross@kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, rostedt@goodmis.org, jithu.joseph@intel.com, ashok.raj@intel.com, tony.luck@intel.com, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, patches@lists.linux.dev, ravi.v.shankar@intel.com, pengfei.xu@intel.com Subject: [PATCH v4 6/9] platform/x86/intel/ifs: Metadata validation for start_chunk Date: Thu, 5 Oct 2023 12:51:34 -0700 Message-Id: <20231005195137.3117166-7-jithu.joseph@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231005195137.3117166-1-jithu.joseph@intel.com> References: <20230929202436.2850388-1-jithu.joseph@intel.com> <20231005195137.3117166-1-jithu.joseph@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org Add an additional check to validate IFS image metadata field prior to loading the test image. If start_chunk is not a multiple of chunks_per_stride error out. Signed-off-by: Jithu Joseph Reviewed-by: Tony Luck Tested-by: Pengfei Xu --- drivers/platform/x86/intel/ifs/load.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/platform/x86/intel/ifs/load.c b/drivers/platform/x86/intel/ifs/load.c index 582f1801aaaa..959b1878cae6 100644 --- a/drivers/platform/x86/intel/ifs/load.c +++ b/drivers/platform/x86/intel/ifs/load.c @@ -291,6 +291,13 @@ static int validate_ifs_metadata(struct device *dev) return ret; } + if (ifs_meta->chunks_per_stride && + (ifs_meta->starting_chunk % ifs_meta->chunks_per_stride != 0)) { + dev_warn(dev, "Starting chunk num %u not a multiple of chunks_per_stride %u\n", + ifs_meta->starting_chunk, ifs_meta->chunks_per_stride); + return ret; + } + return 0; }