tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: d76913908102044f14381df865bb74df17a538cb commit: cae9dc35ed9ff82a99754e51d57ff6c332e1f7e4 kasan: allow enabling stack tagging for tag-based mode date: 3 months ago config: arm64-randconfig-r005-20201026 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 1c8371692dfe8245bc6690ff1262dcced4649d21) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cae9dc35ed9ff82a99754e51d57ff6c332e1f7e4 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout cae9dc35ed9ff82a99754e51d57ff6c332e1f7e4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/video/backlight/ltv350qv.c:192:12: warning: stack frame size of 13472 bytes in function 'ltv350qv_power' [-Wframe-larger-than=] static int ltv350qv_power(struct ltv350qv *lcd, int power) ^ 1 warning generated. vim +/ltv350qv_power +192 drivers/video/backlight/ltv350qv.c 18f65c793a5106 Haavard Skinnemoen 2007-09-02 191 18f65c793a5106 Haavard Skinnemoen 2007-09-02 @192 static int ltv350qv_power(struct ltv350qv *lcd, int power) 18f65c793a5106 Haavard Skinnemoen 2007-09-02 193 { 18f65c793a5106 Haavard Skinnemoen 2007-09-02 194 int ret = 0; 18f65c793a5106 Haavard Skinnemoen 2007-09-02 195 18f65c793a5106 Haavard Skinnemoen 2007-09-02 196 if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power)) 18f65c793a5106 Haavard Skinnemoen 2007-09-02 197 ret = ltv350qv_power_on(lcd); 18f65c793a5106 Haavard Skinnemoen 2007-09-02 198 else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power)) 18f65c793a5106 Haavard Skinnemoen 2007-09-02 199 ret = ltv350qv_power_off(lcd); 18f65c793a5106 Haavard Skinnemoen 2007-09-02 200 18f65c793a5106 Haavard Skinnemoen 2007-09-02 201 if (!ret) 18f65c793a5106 Haavard Skinnemoen 2007-09-02 202 lcd->power = power; 18f65c793a5106 Haavard Skinnemoen 2007-09-02 203 18f65c793a5106 Haavard Skinnemoen 2007-09-02 204 return ret; 18f65c793a5106 Haavard Skinnemoen 2007-09-02 205 } 18f65c793a5106 Haavard Skinnemoen 2007-09-02 206 :::::: The code at line 192 was first introduced by commit :::::: 18f65c793a5106b9f99822ef248e71582db03386 backlight: Add Samsung LTV350QV LCD driver :::::: TO: Haavard Skinnemoen <hskinnemoen@xxxxxxxxx> :::::: CC: Richard Purdie <rpurdie@xxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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