From patchwork Wed Jul 20 13:06:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cezary Rojewski X-Patchwork-Id: 12923941 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 4C350C433EF for ; Wed, 20 Jul 2022 12:59:23 +0000 (UTC) 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 7D33C172B; Wed, 20 Jul 2022 14:58:31 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 7D33C172B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1658321961; bh=+d4pHLwFh5sutN8u/eJ1RnyII08eYFrnvxa8InoHZtA=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=oLNEo8N4agOtqk+agKuPOjbhL+XFqpGMNo0qr8x4A63RX/8rszsSvxPTNPuLDaAau odDsiMiXcr/logNhtRiOVGJi1LIwBJ5taBBGz6x4CFC2BRIeHRG0dvsQWXfhV/j0LY eiBXMSBNqRG55F6oaQbSpLLRQdNKKO/hScQsYTXg= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 30981F8055A; Wed, 20 Jul 2022 14:57:21 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 425DAF80552; Wed, 20 Jul 2022 14:57:19 +0200 (CEST) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) (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 78075F8028B for ; Wed, 20 Jul 2022 14:57:12 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 78075F8028B Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="h1JGiUge" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1658321833; x=1689857833; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=+d4pHLwFh5sutN8u/eJ1RnyII08eYFrnvxa8InoHZtA=; b=h1JGiUgeO+EGgTi4j7KBbb1sNNe5AIVY3x9HZX+o4SWoRnsQCpx4C3hW qbIOkvVuwRI/I3pS2WifylxGpJHSH06/S+E1NTBny2G9t15ul8tNzeHXu QGDEcrfHEUCoB9/vKBCQww2WXcoFTtjLdeizJe9UdFNs6jl95g6oqfQXg lp9sPHTYmpHOmafyLwySW/tTQ8F5WKUFM6jq1TRxW1N5QZb8+wjvPfoJ3 U3WOI3aSfdE+3keJ8Ypzm7nMepJrFdarzA1zP10ryaDmenW2akh3V6k7U NTfU1kI5rIJ9vmPtF4UrmgjWWz/NjaAWmm6lBqTJ4VCMSUs1XnW6X7VAU Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10413"; a="269797848" X-IronPort-AV: E=Sophos;i="5.92,286,1650956400"; d="scan'208";a="269797848" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jul 2022 05:57:11 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.92,286,1650956400"; d="scan'208";a="656259039" Received: from crojewsk-ctrl.igk.intel.com ([10.102.9.28]) by fmsmga008.fm.intel.com with ESMTP; 20 Jul 2022 05:57:08 -0700 From: Cezary Rojewski To: alsa-devel@alsa-project.org, broonie@kernel.org, tiwai@suse.com Subject: [PATCH 4/4] ALSA: hda: Fix page fault in snd_hda_codec_shutdown() Date: Wed, 20 Jul 2022 15:06:22 +0200 Message-Id: <20220720130622.146973-5-cezary.rojewski@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220720130622.146973-1-cezary.rojewski@intel.com> References: <20220720130622.146973-1-cezary.rojewski@intel.com> MIME-Version: 1.0 Cc: Cezary Rojewski , kai.vehmanen@linux.intel.com, yung-chuan.liao@linux.intel.com, lgirdwood@gmail.com, pierre-louis.bossart@linux.intel.com, hdegoede@redhat.com, ranjani.sridharan@linux.intel.com, amadeuszx.slawinski@linux.intel.com, peter.ujfalusi@linux.intel.com 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" If early probe of HDAudio bus driver fails e.g.: due to missing firmware file, snd_hda_codec_shutdown() ends in manipulating uninitialized codec->pcm_list_head causing page fault. Iinitialization of HDAudio codec in ASoC is split in two: - snd_hda_codec_device_init() - snd_hda_codec_device_new() snd_hda_codec_device_init() is called during probe_codecs() by HDAudio bus driver while snd_hda_codec_device_new() is called by codec-component's ->probe(). The second call will not happen until all components required by related sound card are present within the ASoC framework. With firmware failing to load during the PCI's deferred initialization i.e.: probe_work(), no platform components are ever registered. HDAudio codec enumeration is done at that point though, so the codec components became registered to ASoC framework, calling snd_hda_codec_device_init() in the process. Now, during platform reboot snd_hda_codec_shutdown() is called for every codec found on the HDAudio bus causing oops if any of them has not completed both of their initialization steps. Relocating field initialization fixes the issue. Signed-off-by: Cezary Rojewski --- sound/pci/hda/hda_codec.c | 41 +++++++++++++++++++-------------------- 1 file changed, 20 insertions(+), 21 deletions(-) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 44395b1b734b..17ff79e971cb 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -925,8 +925,28 @@ snd_hda_codec_device_init(struct hda_bus *bus, unsigned int codec_addr, } codec->bus = bus; + codec->depop_delay = -1; + codec->fixup_id = HDA_FIXUP_ID_NOT_SET; + codec->core.dev.release = snd_hda_codec_dev_release; + codec->core.exec_verb = codec_exec_verb; codec->core.type = HDA_DEV_LEGACY; + mutex_init(&codec->spdif_mutex); + mutex_init(&codec->control_mutex); + snd_array_init(&codec->mixers, sizeof(struct hda_nid_item), 32); + snd_array_init(&codec->nids, sizeof(struct hda_nid_item), 32); + snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16); + snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16); + snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8); + snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16); + snd_array_init(&codec->jacktbl, sizeof(struct hda_jack_tbl), 16); + snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8); + INIT_LIST_HEAD(&codec->conn_list); + INIT_LIST_HEAD(&codec->pcm_list_head); + INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work); + refcount_set(&codec->pcm_ref, 1); + init_waitqueue_head(&codec->remove_sleep); + return codec; } EXPORT_SYMBOL_GPL(snd_hda_codec_device_init); @@ -979,29 +999,8 @@ int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card, if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS)) return -EINVAL; - codec->core.dev.release = snd_hda_codec_dev_release; - codec->core.exec_verb = codec_exec_verb; - codec->card = card; codec->addr = codec_addr; - mutex_init(&codec->spdif_mutex); - mutex_init(&codec->control_mutex); - snd_array_init(&codec->mixers, sizeof(struct hda_nid_item), 32); - snd_array_init(&codec->nids, sizeof(struct hda_nid_item), 32); - snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16); - snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16); - snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8); - snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16); - snd_array_init(&codec->jacktbl, sizeof(struct hda_jack_tbl), 16); - snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8); - INIT_LIST_HEAD(&codec->conn_list); - INIT_LIST_HEAD(&codec->pcm_list_head); - refcount_set(&codec->pcm_ref, 1); - init_waitqueue_head(&codec->remove_sleep); - - INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work); - codec->depop_delay = -1; - codec->fixup_id = HDA_FIXUP_ID_NOT_SET; #ifdef CONFIG_PM codec->power_jiffies = jiffies;