From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0C63811712 for ; Thu, 22 Aug 2024 02:22:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724293337; cv=none; b=l8lbnvwRFkhGqOCXULtjEwnI1XW6b5xKLlnks0E9jP98zrCuL6IXDEdKJ3Gtx34c7V+E5tgGQP8AC2+DpoldoWmJ/3JlZS6V5cKiQ3kJ3hBL1hmbFWM9qEYCpNoWOzbqmemH5NvsCLz4UHxkt24tmH7n0oZko084tIaaLYVp2yE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724293337; c=relaxed/simple; bh=WJtefoxByD+Lkl4bQmndoIh/R6ngWiEkC/fObPJ29CU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=a/qexndBCEkWCvWqQLiPNwxWEBGKf9+5QPwqdUwE3+TpQ7odTPNFfIR4xEmK36sxSM/FTOBPrxEaRJJLPZQWlRvlb7lkrqA7kkCfELC6m9+kqbGQX6iiOMz/mqsrwm2IX4rMIgGsIr1GBsANctIf2p4e1AYXPbFrAgI6HbNoM/E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=YcnwR5T+; arc=none smtp.client-ip=192.198.163.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="YcnwR5T+" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1724293336; x=1755829336; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=WJtefoxByD+Lkl4bQmndoIh/R6ngWiEkC/fObPJ29CU=; b=YcnwR5T+R6WWGDUhCJdt7ziNLxC9cslYZyEs9NC8U6AW9nOlFGDrc3yI INJLJqpEgkahY4zLMVCrfCHgG/wcxBfCKiCFWm69Xmukzxdd6zKPAHioL K6vSEHPq7GB8cNp6nW9ICQYSjOjrXZvWtN+yINEsm7k9V1+OvY4aiAyv3 lT17qOWb5oK4VT783gqXREudEv7lMzmit/GweRQJTrmyI0DXNPI/dSK0u 64Xrno6MMxtQejAGkoAdS7olg0Dn1DN3VCcQLrbbGu6vDJEotioUeZ+Vi UR0RzZhr2ZcV1cG+BlmRmZKK0aATMngTvr8SfhyQA5LpwduwWh+1cHFw0 A==; X-CSE-ConnectionGUID: z0xpg7XUSASTA3mrURGQKQ== X-CSE-MsgGUID: SNRvWaPWRZ2YC21CnERikA== X-IronPort-AV: E=McAfee;i="6700,10204,11171"; a="22295834" X-IronPort-AV: E=Sophos;i="6.10,165,1719903600"; d="scan'208";a="22295834" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Aug 2024 19:22:15 -0700 X-CSE-ConnectionGUID: RqiLgtclT7C8ukGKDldJNg== X-CSE-MsgGUID: wfGEYu3ASb+Oi8n3oMh1SQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,165,1719903600"; d="scan'208";a="66233019" Received: from lkp-server01.sh.intel.com (HELO 9a732dc145d3) ([10.239.97.150]) by orviesa004.jf.intel.com with ESMTP; 21 Aug 2024 19:22:14 -0700 Received: from kbuild by 9a732dc145d3 with local (Exim 4.96) (envelope-from ) id 1sgxSl-000CB4-0m; Thu, 22 Aug 2024 02:22:11 +0000 Date: Thu, 22 Aug 2024 10:21:18 +0800 From: kernel test robot To: Charles Han , neil.armstrong@linaro.org, quic_jesszhan@quicinc.com, mripard@kernel.org Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, liuyanming@ieisystem.com, hanchunchao Subject: Re: [PATCH] drm/panel/hx83102: fix null pointer dereference in hx83102_get_modes Message-ID: <202408221044.vVHNGMnS-lkp@intel.com> References: <20240821095039.15282-1-hanchunchao@inspur.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240821095039.15282-1-hanchunchao@inspur.com> Hi Charles, kernel test robot noticed the following build errors: [auto build test ERROR on linus/master] [also build test ERROR on v6.11-rc4 next-20240821] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Charles-Han/drm-panel-hx83102-fix-null-pointer-dereference-in-hx83102_get_modes/20240821-191703 base: linus/master patch link: https://lore.kernel.org/r/20240821095039.15282-1-hanchunchao%40inspur.com patch subject: [PATCH] drm/panel/hx83102: fix null pointer dereference in hx83102_get_modes config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20240822/202408221044.vVHNGMnS-lkp@intel.com/config) compiler: s390-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240822/202408221044.vVHNGMnS-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202408221044.vVHNGMnS-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from include/linux/device.h:15, from include/linux/blk_types.h:11, from include/linux/writeback.h:13, from include/linux/memcontrol.h:23, from include/linux/swap.h:9, from include/linux/suspend.h:5, from include/linux/regulator/consumer.h:35, from drivers/gpu/drm/panel/panel-himax-hx83102.c:14: drivers/gpu/drm/panel/panel-himax-hx83102.c: In function 'hx83102_get_modes': >> drivers/gpu/drm/panel/panel-himax-hx83102.c:569:34: error: passing argument 1 of '_dev_err' from incompatible pointer type [-Wincompatible-pointer-types] 569 | dev_err(connector->dev, "bad mode or failed to add mode\n"); | ~~~~~~~~~^~~~~ | | | struct drm_device * include/linux/dev_printk.h:110:25: note: in definition of macro 'dev_printk_index_wrap' 110 | _p_func(dev, fmt, ##__VA_ARGS__); \ | ^~~ drivers/gpu/drm/panel/panel-himax-hx83102.c:569:17: note: in expansion of macro 'dev_err' 569 | dev_err(connector->dev, "bad mode or failed to add mode\n"); | ^~~~~~~ include/linux/dev_printk.h:50:36: note: expected 'const struct device *' but argument is of type 'struct drm_device *' 50 | void _dev_err(const struct device *dev, const char *fmt, ...); | ~~~~~~~~~~~~~~~~~~~~~^~~ vim +/_dev_err +569 drivers/gpu/drm/panel/panel-himax-hx83102.c 559 560 static int hx83102_get_modes(struct drm_panel *panel, 561 struct drm_connector *connector) 562 { 563 struct hx83102 *ctx = panel_to_hx83102(panel); 564 const struct drm_display_mode *m = ctx->desc->modes; 565 struct drm_display_mode *mode; 566 567 mode = drm_mode_duplicate(connector->dev, m); 568 if (!mode) { > 569 dev_err(connector->dev, "bad mode or failed to add mode\n"); 570 return -EINVAL; 571 } 572 573 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 574 drm_mode_set_name(mode); 575 drm_mode_probed_add(connector, mode); 576 577 connector->display_info.width_mm = ctx->desc->size.width_mm; 578 connector->display_info.height_mm = ctx->desc->size.height_mm; 579 connector->display_info.bpc = 8; 580 581 return 1; 582 } 583 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki