[kbuild-all] [dhowells-fs:fscache-iter 38/55] include/linux/err.h:22:49: warning: cast to pointer from integer of different size

tree: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git fscache-iter head: f6ac6a6db767d26c3330f0cecadd4f331ee6d291 commit: f6fd854cae86c52f0f0fb058483feab23fc77058 [38/55] cachefiles: Implement read and write parts of new I/O API config: arc-randconfig-r002-20200911 (attached as .config) compiler: arceb-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 f6fd854cae86c52f0f0fb058483feab23fc77058 # 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 warnings (new ones prefixed by >>): In file included from include/linux/kernel.h:11, from include/linux/list.h:9, from include/linux/mount.h:14, from fs//cachefiles/io.c:8: fs//cachefiles/io.c: In function 'cachefiles_read': 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ fs//cachefiles/io.c:91:3: note: in expansion of macro 'if' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~ include/linux/compiler.h:48:24: note: in expansion of macro '__branch_check__' 48 | # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) | ^~~~~~~~~~~~~~~~ include/linux/err.h:22:25: note: in expansion of macro 'unlikely' 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^~~~~~~~ fs//cachefiles/io.c:91:7: note: in expansion of macro 'IS_ERR_VALUE' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~~~~~~~~~~~ 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ fs//cachefiles/io.c:91:3: note: in expansion of macro 'if' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~ include/linux/compiler.h:48:24: note: in expansion of macro '__branch_check__' 48 | # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) | ^~~~~~~~~~~~~~~~ include/linux/err.h:22:25: note: in expansion of macro 'unlikely' 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^~~~~~~~ fs//cachefiles/io.c:91:7: note: in expansion of macro 'IS_ERR_VALUE' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~~~~~~~~~~~ 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^ include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ fs//cachefiles/io.c:91:3: note: in expansion of macro 'if' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~ include/linux/compiler.h:48:24: note: in expansion of macro '__branch_check__' 48 | # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) | ^~~~~~~~~~~~~~~~ include/linux/err.h:22:25: note: in expansion of macro 'unlikely' 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^~~~~~~~ fs//cachefiles/io.c:91:7: note: in expansion of macro 'IS_ERR_VALUE' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~~~~~~~~~~~ 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^ include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ fs//cachefiles/io.c:91:3: note: in expansion of macro 'if' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~ include/linux/compiler.h:48:24: note: in expansion of macro '__branch_check__' 48 | # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) | ^~~~~~~~~~~~~~~~ include/linux/err.h:22:25: note: in expansion of macro 'unlikely' 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^~~~~~~~ fs//cachefiles/io.c:91:7: note: in expansion of macro 'IS_ERR_VALUE' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~~~~~~~~~~~ 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^ include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' 69 | (cond) ? \ | ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' 56 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ^~~~~~~~~~~~~~ fs//cachefiles/io.c:91:3: note: in expansion of macro 'if' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~ include/linux/compiler.h:48:24: note: in expansion of macro '__branch_check__' 48 | # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) | ^~~~~~~~~~~~~~~~ include/linux/err.h:22:25: note: in expansion of macro 'unlikely' 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^~~~~~~~ fs//cachefiles/io.c:91:7: note: in expansion of macro 'IS_ERR_VALUE' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~~~~~~~~~~~ 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^ include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' 69 | (cond) ? \ | ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' 56 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ^~~~~~~~~~~~~~ fs//cachefiles/io.c:91:3: note: in expansion of macro 'if' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~ include/linux/compiler.h:48:24: note: in expansion of macro '__branch_check__' 48 | # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) | ^~~~~~~~~~~~~~~~ include/linux/err.h:22:25: note: in expansion of macro 'unlikely' 22 | #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) | ^~~~~~~~ fs//cachefiles/io.c:91:7: note: in expansion of macro 'IS_ERR_VALUE' 91 | if (IS_ERR_VALUE(off2) && off2 != -ENXIO) { | ^~~~~~~~~~~~ # https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/com... git remote add dhowells-fs https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git git fetch --no-tags dhowells-fs fscache-iter git checkout f6fd854cae86c52f0f0fb058483feab23fc77058 vim +22 include/linux/err.h ebba5f9fcb8823 Randy Dunlap 2006-09-27 21 aa00edc1287a69 Linus Torvalds 2016-05-27 @22 #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) 07ab67c8d0d7c1 Linus Torvalds 2005-05-19 23 :::::: The code at line 22 was first introduced by commit :::::: aa00edc1287a693eadc7bc67a3d73555d969b35d make IS_ERR_VALUE() complain about non-pointer-sized arguments :::::: TO: Linus Torvalds <torvalds(a)linux-foundation.org&gt; :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org