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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31CFBC5DF60 for ; Fri, 8 Nov 2019 19:04:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 05073222C5 for ; Fri, 8 Nov 2019 19:04:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573239890; bh=1Xi4C8BHtyWqVSzTXqvV4jzH3vajRRFBRAa8ig1ix9o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=d1Scou+Z0Te/6xdvwDw2WsC5YgtsF7euVEuAistc0WKK+zY6MC3JDPU/tBSGeJOU+ KkrAnq+T8GoOuDdf6lKWc1jeCQuvQwh4vKJthAXvMquAlI8npEfJbJZa14GQk7eKAA IsKrRQlh4uDXwslEnZTvVGauXmU4v+rGZ+UNpZh4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391073AbfKHTEs (ORCPT ); Fri, 8 Nov 2019 14:04:48 -0500 Received: from mail.kernel.org ([198.145.29.99]:34780 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391066AbfKHTEo (ORCPT ); Fri, 8 Nov 2019 14:04:44 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 10A1B20650; Fri, 8 Nov 2019 19:04:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573239883; bh=1Xi4C8BHtyWqVSzTXqvV4jzH3vajRRFBRAa8ig1ix9o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sPMIAWCOEgE9HuoriSh6MEuknePqlXNbkFfBL1H14zLHAvlW42//V0lzteoQ9+GWO 0+tapRVFlEf+Wkau1Vpaf+olyB5usVfTuZd1OML0D4tHQrt6RWHWPTIjk2JV7csKCd xJwtXDEpxPQ58t6oXrvkBMg8OiD7VHD0/5hurA70= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Liam Girdwood , Pierre-Louis Bossart , Mark Brown , Sasha Levin Subject: [PATCH 5.3 015/140] ASoC: SOF: Intel: initialise and verify FW crash dump data. Date: Fri, 8 Nov 2019 19:49:03 +0100 Message-Id: <20191108174903.096215652@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191108174900.189064908@linuxfoundation.org> References: <20191108174900.189064908@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Liam Girdwood [ Upstream commit ff2be865633e6fa523cd2db3b73197d795dec991 ] FW mailbox offset was not set before use and HDR size was not validated. Fix this. Signed-off-by: Liam Girdwood Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20190927200538.660-12-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/sof/intel/bdw.c | 7 +++++++ sound/soc/sof/intel/byt.c | 6 ++++++ sound/soc/sof/intel/hda.c | 7 +++++++ 3 files changed, 20 insertions(+) diff --git a/sound/soc/sof/intel/bdw.c b/sound/soc/sof/intel/bdw.c index 70d524ef9bc07..0ca3c1b55eeb1 100644 --- a/sound/soc/sof/intel/bdw.c +++ b/sound/soc/sof/intel/bdw.c @@ -37,6 +37,7 @@ #define MBOX_SIZE 0x1000 #define MBOX_DUMP_SIZE 0x30 #define EXCEPT_OFFSET 0x800 +#define EXCEPT_MAX_HDR_SIZE 0x400 /* DSP peripherals */ #define DMAC0_OFFSET 0xFE000 @@ -228,6 +229,11 @@ static void bdw_get_registers(struct snd_sof_dev *sdev, /* note: variable AR register array is not read */ /* then get panic info */ + if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) { + dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n", + xoops->arch_hdr.totalsize); + return; + } offset += xoops->arch_hdr.totalsize; sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info)); @@ -588,6 +594,7 @@ static int bdw_probe(struct snd_sof_dev *sdev) /* TODO: add offsets */ sdev->mmio_bar = BDW_DSP_BAR; sdev->mailbox_bar = BDW_DSP_BAR; + sdev->dsp_oops_offset = MBOX_OFFSET; /* PCI base */ mmio = platform_get_resource(pdev, IORESOURCE_MEM, diff --git a/sound/soc/sof/intel/byt.c b/sound/soc/sof/intel/byt.c index 107d711efc3f0..96faaa8fa5a3a 100644 --- a/sound/soc/sof/intel/byt.c +++ b/sound/soc/sof/intel/byt.c @@ -28,6 +28,7 @@ #define MBOX_OFFSET 0x144000 #define MBOX_SIZE 0x1000 #define EXCEPT_OFFSET 0x800 +#define EXCEPT_MAX_HDR_SIZE 0x400 /* DSP peripherals */ #define DMAC0_OFFSET 0x098000 @@ -273,6 +274,11 @@ static void byt_get_registers(struct snd_sof_dev *sdev, /* note: variable AR register array is not read */ /* then get panic info */ + if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) { + dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n", + xoops->arch_hdr.totalsize); + return; + } offset += xoops->arch_hdr.totalsize; sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info)); diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 7f665392618f6..f2d45d62dfa56 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -37,6 +37,8 @@ #define IS_CFL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa348) #define IS_CNL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x9dc8) +#define EXCEPT_MAX_HDR_SIZE 0x400 + /* * Debug */ @@ -121,6 +123,11 @@ static void hda_dsp_get_registers(struct snd_sof_dev *sdev, /* note: variable AR register array is not read */ /* then get panic info */ + if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) { + dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n", + xoops->arch_hdr.totalsize); + return; + } offset += xoops->arch_hdr.totalsize; sof_block_read(sdev, sdev->mmio_bar, offset, panic_info, sizeof(*panic_info)); -- 2.20.1