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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DEF54C28B2B for ; Sun, 14 Aug 2022 16:30:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241751AbiHNQaB (ORCPT ); Sun, 14 Aug 2022 12:30:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42588 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242419AbiHNQ3h (ORCPT ); Sun, 14 Aug 2022 12:29:37 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 58EFD1EEF3; Sun, 14 Aug 2022 09:24:27 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id AC29660F76; Sun, 14 Aug 2022 16:24:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8DD64C433D6; Sun, 14 Aug 2022 16:24:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660494266; bh=bfcOz9zsKVPqIE/edsGfGC3+4XG2YhdpQJo5xjBlGBI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OCezi9lbLAOpFOAW9wMS+e+EX7CMW1olijK0e9zOzu6t/wd+qjVBc9Cpv+FySpM5N +x7EDdpeAXT+nnd/mvxsS9msKXsTASysIbfcFEjk21/APJ++8c6VnScaNfIyWXI707 ZslNWpJhLdsq/jEW4gIEjRfGaUHucD9qlmbvoJdRdUuAjlfOVHqWasmQV3F7tYMOkm OzokI/4oEdvEXitx28eXzuWSYWjXOZoLmFDUFUBLavdF+yZj5pRgLeWIr3FxmJZpvq hSA/bGohoya0EEEn+lAb0LROVzYaH9RoB+UIlikrwFwsGgL1jgfdDE2p/muSSwk3iM qVUMR1rOV6FSQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Pierre-Louis Bossart , Ranjani Sridharan , Bard Liao , Mark Brown , Sasha Levin , lgirdwood@gmail.com, peter.ujfalusi@linux.intel.com, daniel.baluta@nxp.com, perex@perex.cz, tiwai@suse.com, kai.vehmanen@linux.intel.com, guennadi.liakhovetski@linux.intel.com, sound-open-firmware@alsa-project.org, alsa-devel@alsa-project.org Subject: [PATCH AUTOSEL 5.18 17/39] ASoC: SOF: Intel: hda: add sanity check on SSP index reported by NHLT Date: Sun, 14 Aug 2022 12:23:06 -0400 Message-Id: <20220814162332.2396012-17-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220814162332.2396012-1-sashal@kernel.org> References: <20220814162332.2396012-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Pierre-Louis Bossart [ Upstream commit e51699505042fb365df3a0ce68b850ccd9ad0108 ] We should have a limited trust in the BIOS and verify that the SSP index reported in NHLT is valid for each platform. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Ranjani Sridharan Reviewed-by: Bard Liao Link: https://lore.kernel.org/r/20220725195343.145603-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/sof/intel/hda.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 9c97c80a7f48..b688caa34774 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -1375,6 +1375,7 @@ struct snd_soc_acpi_mach *hda_machine_select(struct snd_sof_dev *sdev) if (mach->tplg_quirk_mask & SND_SOC_ACPI_TPLG_INTEL_SSP_NUMBER && mach->mach_params.i2s_link_mask) { + const struct sof_intel_dsp_desc *chip = get_chip_info(sdev->pdata); int ssp_num; if (hweight_long(mach->mach_params.i2s_link_mask) > 1 && @@ -1384,6 +1385,12 @@ struct snd_soc_acpi_mach *hda_machine_select(struct snd_sof_dev *sdev) /* fls returns 1-based results, SSPs indices are 0-based */ ssp_num = fls(mach->mach_params.i2s_link_mask) - 1; + if (ssp_num >= chip->ssp_count) { + dev_err(sdev->dev, "Invalid SSP %d, max on this platform is %d\n", + ssp_num, chip->ssp_count); + return NULL; + } + tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, "%s%s%d", sof_pdata->tplg_filename, -- 2.35.1