Messages in this thread | | | Date | Tue, 17 Jan 2023 16:11:04 +0800 | From | Tzung-Bi Shih <> | Subject | Re: drivers/platform/chrome/cros_ec_proto_test.c:2530:13: warning: stack frame size (1040) exceeds limit (1024) in 'cros_ec_proto_test_get_sensor_count_legacy' |
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On Sat, Jan 14, 2023 at 10:28:29AM +0800, kernel test robot wrote: > Hi Tzung-Bi, > > FYI, the error/warning still remains. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 97ec4d559d939743e8af83628be5af8da610d9dc > commit: 33f0fdba6066b504ee0b5f1480b1f93b06050df6 platform/chrome: cros_ec_proto: add Kunit tests for get_sensor_count > date: 6 months ago > config: powerpc-allmodconfig > compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 8d9828ef5aa9688500657d36cd2aefbe12bbd162) > 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 powerpc cross compiling tool for clang build > # apt-get install binutils-powerpc-linux-gnu > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=33f0fdba6066b504ee0b5f1480b1f93b06050df6 > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout 33f0fdba6066b504ee0b5f1480b1f93b06050df6 > # save the config file > mkdir build_dir && cp config build_dir/.config > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/platform/chrome/ drivers/staging/media/ > > If you fix the issue, kindly add following tag where applicable > | Reported-by: kernel test robot <lkp@intel.com> > > All warnings (new ones prefixed by >>): > > >> drivers/platform/chrome/cros_ec_proto_test.c:2530:13: warning: stack frame size (1040) exceeds limit (1024) in 'cros_ec_proto_test_get_sensor_count_legacy' [-Wframe-larger-than] > static void cros_ec_proto_test_get_sensor_count_legacy(struct kunit *test) > ^ > 140/1040 (13.46%) spills, 900/1040 (86.54%) variables > 1 warning generated.
This is the 3rd time to see the warning. I wasn't able to reproduce the warning in my environment until I figured out a way by leveraging docker.
Anyway, the proposed fix is at [1].
[1]: https://patchwork.kernel.org/project/chrome-platform/patch/20230117080254.2725536-1-tzungbi@kernel.org/.
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