From patchwork Mon Feb 20 11:16:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 655748 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 039ADC05027 for ; Mon, 20 Feb 2023 11:18:11 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id BB558ED4; Mon, 20 Feb 2023 12:17:18 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz BB558ED4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1676891888; bh=rOMCxEo459LVKFnJiE2YpRPZKTpzgalBc7uTVfzETJE=; h=From:To:Subject:Date:CC:List-Id:List-Archive:List-Help:List-Owner: List-Post:List-Subscribe:List-Unsubscribe:From; b=aJYOFYM77uwnvDGvTySWScUzDJNnvTztqP+wqx0jYQfhgi+JXsSfdL7xdYMTaBbMW 2Nif6tcpCp9IR0FHQULWRBJfoMycXd7molzi8zAJUYZYDDM8pUj9UgHoHo1wS9p0Qe zoeSs71dIat/RuAnY4C0R3OCTi7NKlx6by4Aas7M= Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 14356F80083; Mon, 20 Feb 2023 12:17:00 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 481B2F80266; Mon, 20 Feb 2023 12:16:56 +0100 (CET) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 2F357F80083 for ; Mon, 20 Feb 2023 12:16:50 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 2F357F80083 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=MdxN6JO6 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1676891812; x=1708427812; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=rOMCxEo459LVKFnJiE2YpRPZKTpzgalBc7uTVfzETJE=; b=MdxN6JO6iBQuJ9Ua0g2vVu5h2cCkQIoscCJCAjP/HCtNdLW2Zw6OKCle 7AB2eCLCJbNkKbE+KaWxzEtpBGwGm18erSjp+ngUOQD0yt1kxR1wPlIL4 umSQbR5vpQMJkz8q7gzWGBV8MwN15sbLH/0gwbvAHD5nQ9+KaiHWLKpzA QDtGhfoFj0RKwlujD1mwoHCm/qaDRw+WT4HM22z4kxpzQVLR4jViRSm3j pziX51UPJGj3FRBI88ewipJy3S9u7i27wcS6lvqIzmU355a3GTosadaJb Hq0e8O+YA7F7c9Ht+/RkN07MnFc3bqDNPwtd4pEXz3rOq/ZNP5A1PasEi Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10626"; a="334578773" X-IronPort-AV: E=Sophos;i="5.97,312,1669104000"; d="scan'208";a="334578773" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Feb 2023 03:16:46 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10626"; a="814109139" X-IronPort-AV: E=Sophos;i="5.97,312,1669104000"; d="scan'208";a="814109139" Received: from mmocanu-mobl1.ger.corp.intel.com (HELO pujfalus-desk.ger.corp.intel.com) ([10.251.214.33]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Feb 2023 03:16:43 -0800 From: Peter Ujfalusi To: stable@vger.kernel.org Subject: [PATCH BACKPORT 6.0, 6.1] ASoC: SOF: Intel: hda-dai: fix possible stream_tag leak Date: Mon, 20 Feb 2023 13:16:58 +0200 Message-Id: <20230220111658.32256-1-peter.ujfalusi@linux.intel.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Message-ID-Hash: ZFVHYPOPO3YXCYBKR5USXEOECKWK644R X-Message-ID-Hash: ZFVHYPOPO3YXCYBKR5USXEOECKWK644R X-MailFrom: peter.ujfalusi@linux.intel.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: sashal@kernel.org, broonie@kernel.org, alsa-devel@alsa-project.org, pierre-louis.bossart@linux.intel.com, ranjani.sridharan@linux.intel.com, gregkh@linuxfoundation.org X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: <> List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: [ Upstream commit 1f810d2b6b2fbdc5279644d8b2c140b1f7c9d43d ] The reason for manual backport is that in 6.2 there were a naming cleanup around hdac, link, hlink, for example snd_hdac_ext_bus_get_link is renamed to snd_hdac_ext_bus_get_hlink_by_name in 6.2. The HDaudio stream allocation is done first, and in a second step the LOSIDV parameter is programmed for the multi-link used by a codec. This leads to a possible stream_tag leak, e.g. if a DisplayAudio link is not used. This would happen when a non-Intel graphics card is used and userspace unconditionally uses the Intel Display Audio PCMs without checking if they are connected to a receiver with jack controls. We should first check that there is a valid multi-link entry to configure before allocating a stream_tag. This change aligns the dma_assign and dma_cleanup phases. Cc: stable@vger.kernel.org # 6.1.x 6.0.x Complements: b0cd60f3e9f5 ("ALSA/ASoC: hda: clarify bus_get_link() and bus_link_get() helpers") Link: https://github.com/thesofproject/linux/issues/4151 Signed-off-by: Pierre-Louis Bossart Reviewed-by: Ranjani Sridharan Reviewed-by: Rander Wang Reviewed-by: Bard Liao Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20230216162340.19480-1-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown --- sound/soc/sof/intel/hda-dai.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/sound/soc/sof/intel/hda-dai.c b/sound/soc/sof/intel/hda-dai.c index 556e883a32ed..5f03ee390d54 100644 --- a/sound/soc/sof/intel/hda-dai.c +++ b/sound/soc/sof/intel/hda-dai.c @@ -216,6 +216,10 @@ static int hda_link_dma_hw_params(struct snd_pcm_substream *substream, struct hdac_bus *bus = hstream->bus; struct hdac_ext_link *link; + link = snd_hdac_ext_bus_get_link(bus, codec_dai->component->name); + if (!link) + return -EINVAL; + hext_stream = snd_soc_dai_get_dma_data(cpu_dai, substream); if (!hext_stream) { hext_stream = hda_link_stream_assign(bus, substream); @@ -225,10 +229,6 @@ static int hda_link_dma_hw_params(struct snd_pcm_substream *substream, snd_soc_dai_set_dma_data(cpu_dai, substream, (void *)hext_stream); } - link = snd_hdac_ext_bus_get_link(bus, codec_dai->component->name); - if (!link) - return -EINVAL; - /* set the hdac_stream in the codec dai */ snd_soc_dai_set_stream(codec_dai, hdac_stream(hext_stream), substream->stream);