tree: https://github.com/intel/linux-intel-lts.git 5.10/yocto head: 172b4cf64e47fcf419335e208331e77b65578223 commit: 172b4cf64e47fcf419335e208331e77b65578223 [1/1] Merge branch 'my/v5.10.65' into lts2020/yocto config: powerpc-randconfig-r026-20220114 (https://download.01.org/0day-ci/archive/20220114/202201141954.5HWBw38j-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 82c8aca93488730ce8f66101e0f3538f14b551dd) 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://github.com/intel/linux-intel-lts/commit/172b4cf64e47fcf419335e208... git remote add intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-lts 5.10/yocto git checkout 172b4cf64e47fcf419335e208331e77b65578223 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc prepare 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/kernel/asm-offsets.c:23: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:22: In file included from include/linux/writeback.h:14: In file included from include/linux/blk-cgroup.h:23: In file included from include/linux/blkdev.h:14: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:14: return __kmap_local_page_prot(page, kmap_prot); ^ include/linux/highmem-internal.h:63:9: note: did you mean 'kmap_local_page'? include/linux/highmem-internal.h:61:21: note: 'kmap_local_page' declared here static inline void *kmap_local_page(struct page *page) ^ include/linux/highmem-internal.h:63:9: warning: incompatible integer to pointer conversion returning 'int' from a function with result type 'void *' [-Wint-conversion] return __kmap_local_page_prot(page, kmap_prot); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem-internal.h:68:9: error: implicit declaration of function '__kmap_local_page_prot' [-Werror,-Wimplicit-function-declaration] return __kmap_local_page_prot(page, prot); ^ include/linux/highmem-internal.h:68:9: warning: incompatible integer to pointer conversion returning 'int' from a function with result type 'void *' [-Wint-conversion] return __kmap_local_page_prot(page, prot); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ return __kmap_local_pfn_prot(pfn, kmap_prot); ^ include/linux/highmem-internal.h:73:9: note: did you mean 'kmap_local_page_prot'? include/linux/highmem-internal.h:66:21: note: 'kmap_local_page_prot' declared here static inline void *kmap_local_page_prot(struct page *page, pgprot_t prot) ^ include/linux/highmem-internal.h:73:9: warning: incompatible integer to pointer conversion returning 'int' from a function with result type 'void *' [-Wint-conversion] return __kmap_local_pfn_prot(pfn, kmap_prot); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kunmap_local_indexed(vaddr); ^ include/linux/highmem-internal.h:85:9: error: implicit declaration of function '__kmap_local_page_prot' [-Werror,-Wimplicit-function-declaration] return __kmap_local_page_prot(page, prot); ^ include/linux/highmem-internal.h:85:9: warning: incompatible integer to pointer conversion returning 'int' from a function with result type 'void *' [-Wint-conversion] return __kmap_local_page_prot(page, prot); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem-internal.h:97:9: error: implicit declaration of function '__kmap_local_pfn_prot' [-Werror,-Wimplicit-function-declaration] return __kmap_local_pfn_prot(pfn, kmap_prot); ^ include/linux/highmem-internal.h:97:9: warning: incompatible integer to pointer conversion returning 'int' from a function with result type 'void *' [-Wint-conversion] return __kmap_local_pfn_prot(pfn, kmap_prot); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem-internal.h:102:2: error: implicit declaration of function 'kunmap_local_indexed' [-Werror,-Wimplicit-function-declaration] kunmap_local_indexed(addr); ^ 5 warnings and 7 errors generated. make[2]: *** [scripts/Makefile.build:117: arch/powerpc/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1215: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +/__kmap_local_page_prot +63 include/linux/highmem-internal.h d3dd1f7da10427 Thomas Gleixner 2020-11-03 60 4630d896d87f9b Thomas Gleixner 2020-11-18 61 static inline void *kmap_local_page(struct page *page) 4630d896d87f9b Thomas Gleixner 2020-11-18 62 { 4630d896d87f9b Thomas Gleixner 2020-11-18 @63 return __kmap_local_page_prot(page, kmap_prot); 4630d896d87f9b Thomas Gleixner 2020-11-18 64 } 4630d896d87f9b Thomas Gleixner 2020-11-18 65 4630d896d87f9b Thomas Gleixner 2020-11-18 66 static inline void *kmap_local_page_prot(struct page *page, pgprot_t prot) 4630d896d87f9b Thomas Gleixner 2020-11-18 67 { 4630d896d87f9b Thomas Gleixner 2020-11-18 68 return __kmap_local_page_prot(page, prot); 4630d896d87f9b Thomas Gleixner 2020-11-18 69 } 4630d896d87f9b Thomas Gleixner 2020-11-18 70 4630d896d87f9b Thomas Gleixner 2020-11-18 71 static inline void *kmap_local_pfn(unsigned long pfn) 4630d896d87f9b Thomas Gleixner 2020-11-18 72 { 4630d896d87f9b Thomas Gleixner 2020-11-18 @73 return __kmap_local_pfn_prot(pfn, kmap_prot); 4630d896d87f9b Thomas Gleixner 2020-11-18 74 } 4630d896d87f9b Thomas Gleixner 2020-11-18 75 4630d896d87f9b Thomas Gleixner 2020-11-18 76 static inline void __kunmap_local(void *vaddr) 4630d896d87f9b Thomas Gleixner 2020-11-18 77 { 4630d896d87f9b Thomas Gleixner 2020-11-18 @78 kunmap_local_indexed(vaddr); 4630d896d87f9b Thomas Gleixner 2020-11-18 79 } 4630d896d87f9b Thomas Gleixner 2020-11-18 80 :::::: The code at line 63 was first introduced by commit :::::: 4630d896d87f9baf307ea94a52b159fad69eadc4 mm/highmem: Provide kmap_local* :::::: TO: Thomas Gleixner <tglx(a)linutronix.de&gt; :::::: CC: Junxiao Chang <junxiao.chang(a)intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org