From patchwork Fri Jan 24 21:36:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre-Louis Bossart X-Patchwork-Id: 11351081 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0CC3D13A4 for ; Fri, 24 Jan 2020 21:37:28 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 2C7372071E for ; Fri, 24 Jan 2020 21:37:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="aeaS2spC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2C7372071E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id C6D481665; Fri, 24 Jan 2020 22:36:40 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz C6D481665 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1579901844; bh=JcmEett7R76aAl9Htw3oh0EAcdvifwNK5E24J+nE1Vg=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=aeaS2spCnJNuSlYO1PJpaiZJI8/WQOdl7th6OjISQl9o2gfrCQUDh/WenhArFWyxi bG1B+BTzGk0LQleOuWj2JlIKxc0l/EohPLQXaNNWPPalxpLwxCRnTSjvTeh8MjDgH3 0DpNEfW/mvjjdeViIwbMjyTU5EkpUGL+eH5dWKt4= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 2548FF80245; Fri, 24 Jan 2020 22:36:40 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id 417FFF80245; Fri, 24 Jan 2020 22:36:38 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE,SPF_NONE, URIBL_BLOCKED autolearn=disabled version=3.4.0 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 1C37BF800BA for ; Fri, 24 Jan 2020 22:36:33 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 1C37BF800BA X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Jan 2020 13:36:30 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,359,1574150400"; d="scan'208";a="294313419" Received: from sascates-mobl2.amr.corp.intel.com (HELO pbossart-mobl3.amr.corp.intel.com) ([10.251.4.164]) by fmsmga001.fm.intel.com with ESMTP; 24 Jan 2020 13:36:29 -0800 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Date: Fri, 24 Jan 2020 15:36:19 -0600 Message-Id: <20200124213625.30186-2-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200124213625.30186-1-pierre-louis.bossart@linux.intel.com> References: <20200124213625.30186-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Cc: tiwai@suse.de, Guennadi Liakhovetski , broonie@kernel.org, Pierre-Louis Bossart Subject: [alsa-devel] [PATCH 1/7] ASoC: SOF: fix an Oops, caused by invalid topology X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" From: Guennadi Liakhovetski It is possible to create invalid topology that will cause a kernel Oops when trying to allocate buffers for a NULL substream. Specifically such an Oops was caused by a topology, where a DAI on a capture pipeline was referencing the PCM ID from a playback pipeline. Fix the Oops by explicitly checking for NULL. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Pierre-Louis Bossart --- sound/soc/sof/pcm.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c index 314f3095c12f..29435ba2d329 100644 --- a/sound/soc/sof/pcm.c +++ b/sound/soc/sof/pcm.c @@ -591,6 +591,11 @@ static int sof_pcm_new(struct snd_soc_component *component, "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n", caps->name, caps->buffer_size_min, caps->buffer_size_max); + if (!pcm->streams[stream].substream) { + dev_err(component->dev, "error: NULL playback substream!\n"); + return -EINVAL; + } + snd_pcm_set_managed_buffer(pcm->streams[stream].substream, SNDRV_DMA_TYPE_DEV_SG, sdev->dev, le32_to_cpu(caps->buffer_size_min), @@ -609,6 +614,11 @@ static int sof_pcm_new(struct snd_soc_component *component, "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n", caps->name, caps->buffer_size_min, caps->buffer_size_max); + if (!pcm->streams[stream].substream) { + dev_err(component->dev, "error: NULL capture substream!\n"); + return -EINVAL; + } + snd_pcm_set_managed_buffer(pcm->streams[stream].substream, SNDRV_DMA_TYPE_DEV_SG, sdev->dev, le32_to_cpu(caps->buffer_size_min),