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Message-ID: <202408221044.vVHNGMnS-lkp@intel.com>
Date: Thu, 22 Aug 2024 10:21:18 +0800
From: kernel test robot <lkp@...el.com>
To: Charles Han <hanchunchao@...pur.com>, neil.armstrong@...aro.org,
quic_jesszhan@...cinc.com, mripard@...nel.org
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
liuyanming@...system.com, hanchunchao <hanchunchao@...pur.com>
Subject: Re: [PATCH] drm/panel/hx83102: fix null pointer dereference in
hx83102_get_modes
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 <lkp@...el.com>
| 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
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