tree: https://github.com/norov/linux find_bit_static head: 9647d9f4cd1b259c620e06337010396d5a324f79 commit: 9647d9f4cd1b259c620e06337010396d5a324f79 [8/8] fix next config: powerpc-iss476-smp_defconfig (attached as .config) compiler: powerpc-linux-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 # https://github.com/norov/linux/commit/9647d9f4cd1b259c620e06337010396d5a3... git remote add norov https://github.com/norov/linux git fetch --no-tags norov find_bit_static git checkout 9647d9f4cd1b259c620e06337010396d5a324f79 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc 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 arch/powerpc/include/asm/bitops.h:265, from include/linux/bitops.h:50, from include/linux/kernel.h:11, from include/asm-generic/bug.h:20, from arch/powerpc/include/asm/bug.h:109, from include/linux/bug.h:5, from include/linux/page-flags.h:10, from kernel/bounds.c:10: include/asm-generic/bitops/le.h: In function 'find_next_zero_bit_le': include/asm-generic/bitops/le.h:45:9: warning: dereferencing 'void *' pointer 45 | val = *addr | ~BITMAP_FIRST_WORD_MASK(offset); | ^~~~~ include/asm-generic/bitops/le.h:45:9: error: void value not ignored as it ought to be In file included from arch/powerpc/include/asm/bitops.h:207, from include/linux/bitops.h:50, from include/linux/kernel.h:11, from include/asm-generic/bug.h:20, from arch/powerpc/include/asm/bug.h:109, from include/linux/bug.h:5, from include/linux/page-flags.h:10, from kernel/bounds.c:10: 49 | idx = ffz(swap(val)); | ^~~~ include/asm-generic/bitops/ffz.h:11:25: note: in definition of macro 'ffz' 11 | #define ffz(x) __ffs(~(x)) | ^ In file included from arch/powerpc/include/asm/bitops.h:265, from include/linux/bitops.h:50, from include/linux/kernel.h:11, from include/asm-generic/bug.h:20, from arch/powerpc/include/asm/bug.h:109, from include/linux/bug.h:5, from include/linux/page-flags.h:10, from kernel/bounds.c:10: include/asm-generic/bitops/le.h: In function 'find_next_bit_le': include/asm-generic/bitops/le.h:69:9: warning: dereferencing 'void *' pointer 69 | val = *addr & BITMAP_FIRST_WORD_MASK(offset) | ^~~~~ include/asm-generic/bitops/le.h:69:9: error: void value not ignored as it ought to be cc1: some warnings being treated as errors -- In file included from arch/powerpc/include/asm/bitops.h:265, from include/linux/bitops.h:50, from include/linux/kernel.h:11, from include/asm-generic/bug.h:20, from arch/powerpc/include/asm/bug.h:109, from include/linux/bug.h:5, from include/linux/page-flags.h:10, from kernel/bounds.c:10: include/asm-generic/bitops/le.h: In function 'find_next_zero_bit_le': include/asm-generic/bitops/le.h:45:9: warning: dereferencing 'void *' pointer 45 | val = *addr | ~BITMAP_FIRST_WORD_MASK(offset); | ^~~~~ include/asm-generic/bitops/le.h:45:9: error: void value not ignored as it ought to be In file included from arch/powerpc/include/asm/bitops.h:207, from include/linux/bitops.h:50, from include/linux/kernel.h:11, from include/asm-generic/bug.h:20, from arch/powerpc/include/asm/bug.h:109, from include/linux/bug.h:5, from include/linux/page-flags.h:10, from kernel/bounds.c:10: 49 | idx = ffz(swap(val)); | ^~~~ include/asm-generic/bitops/ffz.h:11:25: note: in definition of macro 'ffz' 11 | #define ffz(x) __ffs(~(x)) | ^ In file included from arch/powerpc/include/asm/bitops.h:265, from include/linux/bitops.h:50, from include/linux/kernel.h:11, from include/asm-generic/bug.h:20, from arch/powerpc/include/asm/bug.h:109, from include/linux/bug.h:5, from include/linux/page-flags.h:10, from kernel/bounds.c:10: include/asm-generic/bitops/le.h: In function 'find_next_bit_le': include/asm-generic/bitops/le.h:69:9: warning: dereferencing 'void *' pointer 69 | val = *addr & BITMAP_FIRST_WORD_MASK(offset) | ^~~~~ include/asm-generic/bitops/le.h:69:9: error: void value not ignored as it ought to be cc1: some warnings being treated as errors make[2]: *** [scripts/Makefile.build:117: kernel/bounds.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1220: prepare0] Error 2 make[1]: Target 'modules_prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'modules_prepare' not remade because of errors. -- WARNING: unmet direct dependencies detected for HOTPLUG_CPU Depends on SMP && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE Selected by - PM_SLEEP_SMP && SMP && (ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE && PM_SLEEP In file included from arch/powerpc/include/asm/bitops.h:265, from include/linux/bitops.h:50, from include/linux/kernel.h:11, from include/asm-generic/bug.h:20, from arch/powerpc/include/asm/bug.h:109, from include/linux/bug.h:5, from include/linux/page-flags.h:10, from kernel/bounds.c:10: include/asm-generic/bitops/le.h: In function 'find_next_zero_bit_le': include/asm-generic/bitops/le.h:45:9: warning: dereferencing 'void pointer 45 | val = | ~BITMAP_FIRST_WORD_MASK(offset); | ^~~~~ include/asm-generic/bitops/le.h:45:9: error: void value not ignored as it ought to be In file included from arch/powerpc/include/asm/bitops.h:207, from include/linux/bitops.h:50, from include/linux/kernel.h:11, from include/asm-generic/bug.h:20, from arch/powerpc/include/asm/bug.h:109, from include/linux/bug.h:5, from include/linux/page-flags.h:10, from kernel/bounds.c:10: 49 | idx = ffz(swap(val)); | ^~~~ include/asm-generic/bitops/ffz.h:11:25: note: in definition of macro 'ffz' 11 | #define ffz(x) __ffs(~(x)) | ^ In file included from arch/powerpc/include/asm/bitops.h:265, from include/linux/bitops.h:50, from include/linux/kernel.h:11, from include/asm-generic/bug.h:20, from arch/powerpc/include/asm/bug.h:109, from include/linux/bug.h:5, from include/linux/page-flags.h:10, from kernel/bounds.c:10: include/asm-generic/bitops/le.h: In function 'find_next_bit_le': include/asm-generic/bitops/le.h:69:9: warning: dereferencing 'void pointer 69 | val = & BITMAP_FIRST_WORD_MASK(offset) | ^~~~~ include/asm-generic/bitops/le.h:69:9: error: void value not ignored as it ought to be cc1: some warnings being treated as errors Makefile arch block certs crypto drivers fs include init ipc kernel lib mm net scripts security sound source usr virt [scripts/Makefile.build:117: kernel/bounds.s] Error 1 Target '__build' not remade because of errors. Makefile arch block certs crypto drivers fs include init ipc kernel lib mm net scripts security sound source usr virt [Makefile:1220: prepare0] Error 2 Target 'prepare' not remade because of errors. make: Makefile arch block certs crypto drivers fs include init ipc kernel lib mm net scripts security sound source usr virt [Makefile:185: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for HOTPLUG_CPU Depends on SMP && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE Selected by - PM_SLEEP_SMP && SMP && (ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE && PM_SLEEP vim +/swap +49 include/asm-generic/bitops/le.h 33 34 #ifndef find_next_zero_bit_le 35 static __always_inline 36 unsigned long find_next_zero_bit_le(const void *addr, unsigned 37 long size, unsigned long offset) 38 { 39 if (small_const_nbits(size)) { 40 unsigned long val, idx; 41 42 if (unlikely(offset >= size)) 43 return size; 44 45 val = *addr | ~BITMAP_FIRST_WORD_MASK(offset); 46 if (val == ~0UL) 47 return size; 48 50 51 return idx < size ? idx : size; 52 } 53 54 return _find_next_bit(addr, NULL, size, offset, ~0UL, 1); 55 } 56 #endif 57 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org