On Mon, 11 Apr 2022, kernel test robot lkp@intel.com wrote:
Hi Jani,
I love your patch! Perhaps something to improve:
[auto build test WARNING on drm-tip/drm-tip] [also build test WARNING on next-20220411] [cannot apply to drm/drm-next drm-intel/for-linux-next v5.18-rc2] [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]
url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-edid-low-leve... base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220411/202204112055.cUmakJdJ-lkp@i...) compiler: arceb-elf-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/ba74d3cc8cc1b6ba4c34a039e79799... git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Jani-Nikula/drm-edid-low-level-EDID-block-read-refactoring-etc/20220411-175027 git checkout ba74d3cc8cc1b6ba4c34a039e797994ddbc77567 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash drivers/gpu/drm/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot lkp@intel.com
All warnings (new ones prefixed by >>):
drivers/gpu/drm/drm_edid.c: In function 'drm_do_get_edid':
drivers/gpu/drm/drm_edid.c:1664:21: warning: array subscript [128, 32640] is outside array bounds of 'struct edid[1]' [-Warray-bounds]
1664 | return block[0]; | ~~~~~^~~drivers/gpu/drm/drm_edid.c:2173:15: note: referencing an object of size 128 allocated by 'krealloc' 2173 | new = krealloc(edid, edid_size(edid), GFP_KERNEL); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I presume this is caused by the other blunder.
BR, Jani.
vim +1664 drivers/gpu/drm/drm_edid.c
c465bbc87ce372 Stefan Brüns 2014-11-30 1659 4ba0f53ce685b0 Jani Nikula 2022-03-31 1660 static int edid_block_tag(const void *_block) 4ba0f53ce685b0 Jani Nikula 2022-03-31 1661 { 4ba0f53ce685b0 Jani Nikula 2022-03-31 1662 const u8 *block = _block; 4ba0f53ce685b0 Jani Nikula 2022-03-31 1663 4ba0f53ce685b0 Jani Nikula 2022-03-31 @1664 return block[0]; 4ba0f53ce685b0 Jani Nikula 2022-03-31 1665 } 4ba0f53ce685b0 Jani Nikula 2022-03-31 1666