From patchwork Tue Jul 14 16:36:51 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jenny TC X-Patchwork-Id: 6788101 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 317BA9F2F0 for ; Tue, 14 Jul 2015 16:37:30 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5EA4520629 for ; Tue, 14 Jul 2015 16:37:29 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 68F862061E for ; Tue, 14 Jul 2015 16:37:28 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 62F00265370; Tue, 14 Jul 2015 18:37:27 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id A3F91265249; Tue, 14 Jul 2015 18:37:18 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 7549A265249; Tue, 14 Jul 2015 18:37:17 +0200 (CEST) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by alsa0.perex.cz (Postfix) with ESMTP id 47F7826530C for ; Tue, 14 Jul 2015 18:36:58 +0200 (CEST) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga103.jf.intel.com with ESMTP; 14 Jul 2015 09:36:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,473,1432623600"; d="scan'208";a="524142077" Received: from jenny-desktop.iind.intel.com ([10.223.169.54]) by FMSMGA003.fm.intel.com with ESMTP; 14 Jul 2015 09:36:56 -0700 From: Jenny TC To: alsa-devel@alsa-project.org, yang.a.fang@intel.com Date: Tue, 14 Jul 2015 22:06:51 +0530 Message-Id: <1436891811-24759-1-git-send-email-jenny.tc@intel.com> X-Mailer: git-send-email 1.7.9.5 Cc: vinod.koul@intel.com, Jenny TC Subject: [alsa-devel] [PATCH] cht_bsw_rt5645: Fix Kernel crash with strcpy X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 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: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Kernel crash is observed when strcpy is used with const char*. The crash is reported only if driver is loaded as a module or the probe is called in the late stage of Kernel boot (EPROBE_DEFER). This is because Kernel enables read only protection near the end. Issue is addressed by replacing the strcpy with pointer assignment Signed-off-by: Jenny TC --- sound/soc/intel/boards/cht_bsw_rt5645.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/intel/boards/cht_bsw_rt5645.c b/sound/soc/intel/boards/cht_bsw_rt5645.c index bdcaf46..3665d6c 100644 --- a/sound/soc/intel/boards/cht_bsw_rt5645.c +++ b/sound/soc/intel/boards/cht_bsw_rt5645.c @@ -367,7 +367,7 @@ static int snd_cht_mc_probe(struct platform_device *pdev) card->dev = &pdev->dev; sprintf(codec_name, "i2c-%s:00", drv->acpi_card->codec_id); /* set correct codec name */ - strcpy((char *)card->dai_link[2].codec_name, codec_name); + card->dai_link[2].codec_name = codec_name; snd_soc_card_set_drvdata(card, drv); ret_val = devm_snd_soc_register_card(&pdev->dev, card); if (ret_val) {