Hi, I love your patch! Yet something to improve: [auto build test ERROR on hch-configfs/for-next] [also build test ERROR on linus/master v5.10-rc7] [cannot apply to hnaz-linux-mm/master next-20201207] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/ira-weiny-intel-com/Lift-memcpy_-to-from-_page-to-core/20201208-070017 base: git://git.infradead.org/users/hch/configfs.git for-next config: powerpc64-randconfig-r002-20201207 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project a2f922140f5380571fb74179f2bf622b3b925697) 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 powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://github.com/0day-ci/linux/commit/23e6d3f08a315c6e70fde3d63a275c91e1dcb0ee git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review ira-weiny-intel-com/Lift-memcpy_-to-from-_page-to-core/20201208-070017 git checkout 23e6d3f08a315c6e70fde3d63a275c91e1dcb0ee # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): <scratch space>:223:1: note: expanded from here __do_outsw ^ arch/powerpc/include/asm/io.h:545:58: note: expanded from macro '__do_outsw' #define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ 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:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:225:1: note: expanded from here __do_outsl ^ arch/powerpc/include/asm/io.h:546:58: note: expanded from macro '__do_outsl' #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ 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: include/linux/highmem.h:229:15: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] void *addr = kmap_local_page(page); ^ include/linux/highmem.h:229:15: note: did you mean 'kmap_to_page'? include/linux/highmem.h:130:28: note: 'kmap_to_page' declared here static inline struct page *kmap_to_page(void *addr) ^ include/linux/highmem.h:229:8: warning: incompatible integer to pointer conversion initializing 'void *' with an expression of type 'int' [-Wint-conversion] void *addr = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:231:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(addr); ^ include/linux/highmem.h:282:16: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] void *kaddr = kmap_local_page(page); ^ include/linux/highmem.h:282:8: warning: incompatible integer to pointer conversion initializing 'void *' with an expression of type 'int' [-Wint-conversion] void *kaddr = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:284:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(kaddr); ^ include/linux/highmem.h:291:16: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] void *kaddr = kmap_local_page(page); ^ include/linux/highmem.h:291:8: warning: incompatible integer to pointer conversion initializing 'void *' with an expression of type 'int' [-Wint-conversion] void *kaddr = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:301:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(kaddr); ^ include/linux/highmem.h:324:10: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] vfrom = kmap_local_page(from); ^ include/linux/highmem.h:324:8: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion] vfrom = kmap_local_page(from); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:325:6: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion] vto = kmap_local_page(to); ^ ~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:327:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(vto); ^ include/linux/highmem.h:339:10: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] vfrom = kmap_local_page(from); ^ include/linux/highmem.h:339:8: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion] vfrom = kmap_local_page(from); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:340:6: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion] vto = kmap_local_page(to); ^ ~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:342:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(vto); ^ 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: >> include/linux/pagemap.h:1036:14: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] char *dst = kmap_local_page(dst_page); ^ >> include/linux/pagemap.h:1036:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *dst = kmap_local_page(dst_page); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/pagemap.h:1037:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *src = kmap_local_page(src_page); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/pagemap.h:1039:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(src); ^ include/linux/pagemap.h:1047:14: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] char *dst = kmap_local_page(dst_page); ^ include/linux/pagemap.h:1047:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *dst = kmap_local_page(dst_page); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/pagemap.h:1048:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *src = kmap_local_page(src_page); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/pagemap.h:1050:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(src); ^ include/linux/pagemap.h:1056:15: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] char *from = kmap_local_page(page); ^ include/linux/pagemap.h:1056:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *from = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/pagemap.h:1058:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(from); ^ include/linux/pagemap.h:1063:13: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] char *to = kmap_local_page(page); ^ include/linux/pagemap.h:1063:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *to = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/pagemap.h:1065:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(to); ^ include/linux/pagemap.h:1070:15: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] char *addr = kmap_local_page(page); ^ include/linux/pagemap.h:1070:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *addr = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ fatal error: too many errors emitted, stopping now [-ferror-limit=] 20 warnings and 20 errors generated. -- <scratch space>:223:1: note: expanded from here __do_outsw ^ arch/powerpc/include/asm/io.h:545:58: note: expanded from macro '__do_outsw' #define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ 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:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:225:1: note: expanded from here __do_outsl ^ arch/powerpc/include/asm/io.h:546:58: note: expanded from macro '__do_outsl' #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ 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: include/linux/highmem.h:229:15: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] void *addr = kmap_local_page(page); ^ include/linux/highmem.h:229:15: note: did you mean 'kmap_to_page'? include/linux/highmem.h:130:28: note: 'kmap_to_page' declared here static inline struct page *kmap_to_page(void *addr) ^ include/linux/highmem.h:229:8: warning: incompatible integer to pointer conversion initializing 'void *' with an expression of type 'int' [-Wint-conversion] void *addr = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:231:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(addr); ^ include/linux/highmem.h:282:16: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] void *kaddr = kmap_local_page(page); ^ include/linux/highmem.h:282:8: warning: incompatible integer to pointer conversion initializing 'void *' with an expression of type 'int' [-Wint-conversion] void *kaddr = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:284:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(kaddr); ^ include/linux/highmem.h:291:16: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] void *kaddr = kmap_local_page(page); ^ include/linux/highmem.h:291:8: warning: incompatible integer to pointer conversion initializing 'void *' with an expression of type 'int' [-Wint-conversion] void *kaddr = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:301:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(kaddr); ^ include/linux/highmem.h:324:10: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] vfrom = kmap_local_page(from); ^ include/linux/highmem.h:324:8: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion] vfrom = kmap_local_page(from); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:325:6: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion] vto = kmap_local_page(to); ^ ~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:327:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(vto); ^ include/linux/highmem.h:339:10: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] vfrom = kmap_local_page(from); ^ include/linux/highmem.h:339:8: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion] vfrom = kmap_local_page(from); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:340:6: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion] vto = kmap_local_page(to); ^ ~~~~~~~~~~~~~~~~~~~ include/linux/highmem.h:342:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(vto); ^ 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: >> include/linux/pagemap.h:1036:14: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] char *dst = kmap_local_page(dst_page); ^ >> include/linux/pagemap.h:1036:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *dst = kmap_local_page(dst_page); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/pagemap.h:1037:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *src = kmap_local_page(src_page); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/pagemap.h:1039:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(src); ^ include/linux/pagemap.h:1047:14: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] char *dst = kmap_local_page(dst_page); ^ include/linux/pagemap.h:1047:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *dst = kmap_local_page(dst_page); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/pagemap.h:1048:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *src = kmap_local_page(src_page); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/pagemap.h:1050:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(src); ^ include/linux/pagemap.h:1056:15: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] char *from = kmap_local_page(page); ^ include/linux/pagemap.h:1056:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *from = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/pagemap.h:1058:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(from); ^ include/linux/pagemap.h:1063:13: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] char *to = kmap_local_page(page); ^ include/linux/pagemap.h:1063:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *to = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ include/linux/pagemap.h:1065:2: error: implicit declaration of function 'kunmap_local' [-Werror,-Wimplicit-function-declaration] kunmap_local(to); ^ include/linux/pagemap.h:1070:15: error: implicit declaration of function 'kmap_local_page' [-Werror,-Wimplicit-function-declaration] char *addr = kmap_local_page(page); ^ include/linux/pagemap.h:1070:8: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion] char *addr = kmap_local_page(page); ^ ~~~~~~~~~~~~~~~~~~~~~ fatal error: too many errors emitted, stopping now [-ferror-limit=] 20 warnings and 20 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:1200: 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 +1036 include/linux/pagemap.h 1031 1032 static inline void memcpy_page(struct page *dst_page, size_t dst_off, 1033 struct page *src_page, size_t src_off, 1034 size_t len) 1035 { > 1036 char *dst = kmap_local_page(dst_page); 1037 char *src = kmap_local_page(src_page); 1038 memcpy(dst + dst_off, src + src_off, len); > 1039 kunmap_local(src); 1040 kunmap_local(dst); 1041 } 1042 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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