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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2B02C433F5 for ; Thu, 28 Apr 2022 13:21:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233418AbiD1NZJ (ORCPT ); Thu, 28 Apr 2022 09:25:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231500AbiD1NZI (ORCPT ); Thu, 28 Apr 2022 09:25:08 -0400 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96DAAABF5C for ; Thu, 28 Apr 2022 06:21:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1651152113; x=1682688113; h=date:from:to:cc:subject:message-id:mime-version: content-transfer-encoding; bh=uy8zSGdRbmu9x6oWV3PwTp0oEkokUG8PpRwrZP5QiPc=; b=Lf18CP0tCW5h7vfsY1loFzINNxoOqdYSZhO6YrVWt9xSiG7Oa9p+ouH7 myc8f+PNRD0LMh+K5hr89S/jzmBlxdJmqL6HroHR5FJf/Xf2QXL9LLJ1l wzNC2V7f0NdWpYpogapD670MzRocl6YCeukrRpZYd2U5iBL0SscWB1ODX mMuGp9wXIlVZM/LjpFURwxBMZCvWiyu63iRyTn8OL9Abwqs51EvqKA3P/ bSC6H0UU+lei6Q4WW0ysQhY5PXne2vcKOgO6yzO2va4cnXiWwTG2Yd7ql yH/J6BBKBiBtPvGkOVE/43obchqUEkjdpuzK2Tomz3Bb+DJpypk9bja6V g==; X-IronPort-AV: E=McAfee;i="6400,9594,10330"; a="266101894" X-IronPort-AV: E=Sophos;i="5.91,295,1647327600"; d="scan'208";a="266101894" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Apr 2022 06:21:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,295,1647327600"; d="scan'208";a="541279049" Received: from lkp-server01.sh.intel.com (HELO 5056e131ad90) ([10.239.97.150]) by orsmga002.jf.intel.com with ESMTP; 28 Apr 2022 06:21:51 -0700 Received: from kbuild by 5056e131ad90 with local (Exim 4.95) (envelope-from ) id 1nk45f-0005OQ-1H; Thu, 28 Apr 2022 13:21:51 +0000 Date: Thu, 28 Apr 2022 21:21:18 +0800 From: kernel test robot To: "Gustavo A. R. Silva" Cc: kbuild-all@lists.01.org, "Gustavo A. R. Silva" , LKML Subject: [gustavoars:testing/stringop-overflow 1/1] drivers/gpu/drm/i915/intel_pm.c:3106:9: error: 'intel_read_wm_latency' accessing 16 bytes in a region of size 10 Message-ID: <202204282134.8kzHtDU9-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git testing/stringop-overflow head: 841e98dddf647582547543eba0a1e3e8c8f8db9c commit: 841e98dddf647582547543eba0a1e3e8c8f8db9c [1/1] Makefile: Enable -Wstringop-overflow config: x86_64-randconfig-c002 (https://download.01.org/0day-ci/archive/20220428/202204282134.8kzHtDU9-lkp@intel.com/config) compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/commit/?id=841e98dddf647582547543eba0a1e3e8c8f8db9c git remote add gustavoars https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git git fetch --no-tags gustavoars testing/stringop-overflow git checkout 841e98dddf647582547543eba0a1e3e8c8f8db9c # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): drivers/gpu/drm/i915/intel_pm.c: In function 'ilk_setup_wm_latency': >> drivers/gpu/drm/i915/intel_pm.c:3106:9: error: 'intel_read_wm_latency' accessing 16 bytes in a region of size 10 [-Werror=stringop-overflow=] 3106 | intel_read_wm_latency(dev_priv, dev_priv->wm.pri_latency); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/intel_pm.c:3106:9: note: referencing argument 2 of type 'u16 *' {aka 'short unsigned int *'} drivers/gpu/drm/i915/intel_pm.c:2861:13: note: in a call to function 'intel_read_wm_latency' 2861 | static void intel_read_wm_latency(struct drm_i915_private *dev_priv, | ^~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/intel_read_wm_latency +3106 drivers/gpu/drm/i915/intel_pm.c 03981c6ebec4fc7 Ville Syrjälä 2018-11-14 3103 bb7265197a86bd6 Ville Syrjälä 2016-10-31 3104 static void ilk_setup_wm_latency(struct drm_i915_private *dev_priv) 53615a5e129534f Ville Syrjälä 2013-08-01 3105 { bb7265197a86bd6 Ville Syrjälä 2016-10-31 @3106 intel_read_wm_latency(dev_priv, dev_priv->wm.pri_latency); 53615a5e129534f Ville Syrjälä 2013-08-01 3107 53615a5e129534f Ville Syrjälä 2013-08-01 3108 memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency, 53615a5e129534f Ville Syrjälä 2013-08-01 3109 sizeof(dev_priv->wm.pri_latency)); 53615a5e129534f Ville Syrjälä 2013-08-01 3110 memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency, 53615a5e129534f Ville Syrjälä 2013-08-01 3111 sizeof(dev_priv->wm.pri_latency)); 53615a5e129534f Ville Syrjälä 2013-08-01 3112 5db9401983ac7bf Tvrtko Ursulin 2016-10-13 3113 intel_fixup_spr_wm_latency(dev_priv, dev_priv->wm.spr_latency); fd6b8f43c9e9a3a Tvrtko Ursulin 2016-10-14 3114 intel_fixup_cur_wm_latency(dev_priv, dev_priv->wm.cur_latency); 26ec971e302c53b Ville Syrjälä 2013-08-01 3115 5db9401983ac7bf Tvrtko Ursulin 2016-10-13 3116 intel_print_wm_latency(dev_priv, "Primary", dev_priv->wm.pri_latency); 5db9401983ac7bf Tvrtko Ursulin 2016-10-13 3117 intel_print_wm_latency(dev_priv, "Sprite", dev_priv->wm.spr_latency); 5db9401983ac7bf Tvrtko Ursulin 2016-10-13 3118 intel_print_wm_latency(dev_priv, "Cursor", dev_priv->wm.cur_latency); e95a2f7509f5219 Ville Syrjälä 2014-05-08 3119 93e7e61eb448318 Lucas De Marchi 2021-04-12 3120 if (DISPLAY_VER(dev_priv) == 6) { bb7265197a86bd6 Ville Syrjälä 2016-10-31 3121 snb_wm_latency_quirk(dev_priv); 03981c6ebec4fc7 Ville Syrjälä 2018-11-14 3122 snb_wm_lp3_irq_quirk(dev_priv); 03981c6ebec4fc7 Ville Syrjälä 2018-11-14 3123 } 53615a5e129534f Ville Syrjälä 2013-08-01 3124 } 53615a5e129534f Ville Syrjälä 2013-08-01 3125 :::::: The code at line 3106 was first introduced by commit :::::: bb7265197a86bd68078825723b572599fcc60d2b drm/i915: Pass dev_priv to ilk_setup_wm_latency() & co. :::::: TO: Ville Syrjälä :::::: CC: Ville Syrjälä -- 0-DAY CI Kernel Test Service https://01.org/lkp