linux-kernel - drivers/gpu/drm/omapdrm/dss/dsi.c:1126:1: warning: the frame size of 1060 bytes is larger than 1024 bytes

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Date:   Fri, 16 Sep 2022 02:17:07 +0800
From:   kernel test robot <lkp@...el.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>
Subject: drivers/gpu/drm/omapdrm/dss/dsi.c:1126:1: warning: the frame size of
 1060 bytes is larger than 1024 bytes

Hi Arnd,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3245cb65fd91cd514801bf91f5a3066d562f0ac4
commit: 3d427228f7370894680580fcd0381c0349624fa1 ARM: ixp4xx: enable multiplatform support
date:   5 months ago
config: arm-randconfig-r035-20220915 (https://download.01.org/0day-ci/archive/20220916/202209160259.7f3Z5krO-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3d427228f7370894680580fcd0381c0349624fa1
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 3d427228f7370894680580fcd0381c0349624fa1
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/gpu/drm/omapdrm/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/omapdrm/dss/dsi.c: In function 'dsi_dump_dsi_irqs':
>> drivers/gpu/drm/omapdrm/dss/dsi.c:1126:1: warning: the frame size of 1060 bytes is larger than 1024 bytes [-Wframe-larger-than=]
    1126 | }
         | ^
   In file included from include/linux/string.h:253,
                    from include/linux/bitmap.h:11,
                    from include/linux/cpumask.h:12,
                    from include/linux/smp.h:13,
                    from include/linux/lockdep.h:14,
                    from include/linux/rcupdate.h:29,
                    from include/linux/rbtree.h:24,
                    from include/linux/regmap.h:14,
                    from drivers/gpu/drm/omapdrm/dss/dsi.c:11:
   In function 'fortify_memcpy_chk',
       inlined from 'omap_dsi_irq_handler' at drivers/gpu/drm/omapdrm/dss/dsi.c:460:2:
   include/linux/fortify-string.h:336:25: warning: call to '__read_overflow2_field' declared with attribute warning: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Wattribute-warning]
     336 |                         __read_overflow2_field(q_size_field, size);
         |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +1126 drivers/gpu/drm/omapdrm/dss/dsi.c

a72b64b99918ee drivers/video/omap2/dss/dsi.c     Archit Taneja    2011-05-12  1124  
f33656e1fe5aba drivers/gpu/drm/omapdrm/dss/dsi.c Laurent Pinchart 2018-02-13  1125  	return 0;
5a8b572d832772 drivers/video/omap2/dss/dsi.c     Archit Taneja    2011-05-12 @1126  }
5a8b572d832772 drivers/video/omap2/dss/dsi.c     Archit Taneja    2011-05-12  1127  #endif
5a8b572d832772 drivers/video/omap2/dss/dsi.c     Archit Taneja    2011-05-12  1128  

:::::: The code at line 1126 was first introduced by commit
:::::: 5a8b572d832772722c3b3b7578e7fb968560fcf3 OMAP4: DSS2: DSI: Changes for DSI2 on OMAP4

:::::: TO: Archit Taneja <archit@...com>
:::::: CC: Tomi Valkeinen <tomi.valkeinen@...com>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp