Hi Evan, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 18445bf405cb331117bc98427b1ba6f12418ad17 commit: 55084d7f4022439de3077b239eed1eb7515fe3ed drm/amd/powerplay: forbid to use pr_err/warn/info/debug date: 7 weeks ago config: arc-randconfig-c003-20200818 (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 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 git checkout 55084d7f4022439de3077b239eed1eb7515fe3ed # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/gfp.h:5, from include/linux/firmware.h:7, from drivers/gpu/drm/amd/amdgpu/../powerplay/smu_v11_0.c:23: drivers/gpu/drm/amd/amdgpu/../powerplay/smu_v11_0.c: In function 'smu_v11_0_init_microcode': 22 | pr_warn("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ | ^~~~~~~ drivers/gpu/drm/amd/amdgpu/../powerplay/smu_v11_0.c:176:3: note: in expansion of macro 'BUG' 176 | BUG(); | ^~~ In file included from drivers/gpu/drm/amd/amdgpu/../powerplay/smu_v11_0.c:30: At top level: drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:190:18: warning: 'sched_policy' defined but not used [-Wunused-const-variable=] 190 | static const int sched_policy = KFD_SCHED_POLICY_HWS; | ^~~~~~~~~~~~ In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dc_types.h:33, from drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services_types.h:30, from drivers/gpu/drm/amd/amdgpu/../include/dm_pp_interface.h:26, from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:65, from drivers/gpu/drm/amd/amdgpu/../powerplay/smu_v11_0.c:30: drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:76:32: warning: 'dc_fixpt_ln2_div_2' defined but not used [-Wunused-const-variable=] 76 | static const struct fixed31_32 dc_fixpt_ln2_div_2 = { 1488522236LL }; | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:75:32: warning: 'dc_fixpt_ln2' defined but not used [-Wunused-const-variable=] 75 | static const struct fixed31_32 dc_fixpt_ln2 = { 2977044471LL }; | ^~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:74:32: warning: 'dc_fixpt_e' defined but not used [-Wunused-const-variable=] 74 | static const struct fixed31_32 dc_fixpt_e = { 11674931555LL }; | ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:73:32: warning: 'dc_fixpt_two_pi' defined but not used [-Wunused-const-variable=] 73 | static const struct fixed31_32 dc_fixpt_two_pi = { 26986075409LL }; | ^~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:72:32: warning: 'dc_fixpt_pi' defined but not used [-Wunused-const-variable=] 72 | static const struct fixed31_32 dc_fixpt_pi = { 13493037705LL }; | ^~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:67:32: warning: 'dc_fixpt_zero' defined but not used [-Wunused-const-variable=] 67 | static const struct fixed31_32 dc_fixpt_zero = { 0 }; | ^~~~~~~~~~~~~ cc1: some warnings being treated as errors -- drivers/gpu/drm/amd/amdgpu/../powerplay/arcturus_ppt.c: In function 'arcturus_is_dpm_running': drivers/gpu/drm/amd/amdgpu/../powerplay/arcturus_ppt.c:2112:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 2112 | int ret = 0; | ^~~ In file included from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/gfp.h:5, from include/linux/firmware.h:7, from drivers/gpu/drm/amd/amdgpu/../powerplay/arcturus_ppt.c:24: drivers/gpu/drm/amd/amdgpu/../powerplay/arcturus_ppt.c: In function 'arcturus_fill_eeprom_i2c_req': 22 | pr_warn("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ | ^~~~~~~ include/asm-generic/bug.h:62:57: note: in expansion of macro 'BUG' 62 | #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) | ^~~ drivers/gpu/drm/amd/amdgpu/../powerplay/arcturus_ppt.c:2157:2: note: in expansion of macro 'BUG_ON' 2157 | BUG_ON(numbytes > MAX_SW_I2C_COMMANDS); | ^~~~~~ In file included from drivers/gpu/drm/amd/amdgpu/../powerplay/arcturus_ppt.c:30: At top level: drivers/gpu/drm/amd/amdgpu/../powerplay/inc/smu_v11_0.h:68:43: warning: 'smu11_thermal_policy' defined but not used [-Wunused-const-variable=] 68 | static const struct smu_temperature_range smu11_thermal_policy[] = | ^~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/amd/amdgpu/../powerplay/arcturus_ppt.c:25: drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:190:18: warning: 'sched_policy' defined but not used [-Wunused-const-variable=] 190 | static const int sched_policy = KFD_SCHED_POLICY_HWS; | ^~~~~~~~~~~~ In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dc_types.h:33, from drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services_types.h:30, from drivers/gpu/drm/amd/amdgpu/../include/dm_pp_interface.h:26, from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:65, from drivers/gpu/drm/amd/amdgpu/../powerplay/arcturus_ppt.c:25: drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:76:32: warning: 'dc_fixpt_ln2_div_2' defined but not used [-Wunused-const-variable=] 76 | static const struct fixed31_32 dc_fixpt_ln2_div_2 = { 1488522236LL }; | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:75:32: warning: 'dc_fixpt_ln2' defined but not used [-Wunused-const-variable=] 75 | static const struct fixed31_32 dc_fixpt_ln2 = { 2977044471LL }; | ^~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:74:32: warning: 'dc_fixpt_e' defined but not used [-Wunused-const-variable=] 74 | static const struct fixed31_32 dc_fixpt_e = { 11674931555LL }; | ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:73:32: warning: 'dc_fixpt_two_pi' defined but not used [-Wunused-const-variable=] 73 | static const struct fixed31_32 dc_fixpt_two_pi = { 26986075409LL }; | ^~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:72:32: warning: 'dc_fixpt_pi' defined but not used [-Wunused-const-variable=] 72 | static const struct fixed31_32 dc_fixpt_pi = { 13493037705LL }; | ^~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:67:32: warning: 'dc_fixpt_zero' defined but not used [-Wunused-const-variable=] 67 | static const struct fixed31_32 dc_fixpt_zero = { 0 }; | ^~~~~~~~~~~~~ cc1: some warnings being treated as errors # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 55084d7f4022439de3077b239eed1eb7515fe3ed vim +22 arch/arc/include/asm/bug.h 3be80aaef861a6 Vineet Gupta 2013-01-18 20 3be80aaef861a6 Vineet Gupta 2013-01-18 21 #define BUG() do { \ 3872d05299b5ab Vineet Gupta 2014-09-24 @22 pr_warn("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ 173a3efd3edb2e Arnd Bergmann 2018-02-21 23 barrier_before_unreachable(); \ 173a3efd3edb2e Arnd Bergmann 2018-02-21 24 __builtin_trap(); \ 3be80aaef861a6 Vineet Gupta 2013-01-18 25 } while (0) 3be80aaef861a6 Vineet Gupta 2013-01-18 26 :::::: The code at line 22 was first introduced by commit :::::: 3872d05299b5ab58446f484df18f71cab4628c50 ARC: BUG() dumps stack after @msg (@msg now same as in generic BUG)) :::::: TO: Vineet Gupta <vgupta(a)synopsys.com&gt; :::::: CC: Vineet Gupta <vgupta(a)synopsys.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org