Hi Ryan, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Ryan-Roberts/mm-damon-must-atomically-clear-young-on-ptes-and-pmds/20230511-215947 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20230511125848.78621-6-ryan.roberts%40arm.com patch subject: [PATCH v1 5/5] mm: ptep_deref() conversion config: m68k-randconfig-r002-20230511 (https://download.01.org/0day-ci/archive/20230512/202305121818.hTDtbbPW-lkp@xxxxxxxxx/config) compiler: m68k-linux-gcc (GCC) 12.1.0 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/intel-lab-lkp/linux/commit/2d5aca0fcce58b92572fc59bee59a4c5588f2af8 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Ryan-Roberts/mm-damon-must-atomically-clear-young-on-ptes-and-pmds/20230511-215947 git checkout 2d5aca0fcce58b92572fc59bee59a4c5588f2af8 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202305121818.hTDtbbPW-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from kernel/fork.c:52: include/linux/hugetlb.h: In function 'huge_ptep_clear_flush': >> include/linux/hugetlb.h:1203:16: error: implicit declaration of function 'ptep_deref' [-Werror=implicit-function-declaration] 1203 | return ptep_deref(ptep); | ^~~~~~~~~~ >> include/linux/hugetlb.h:1203:16: error: incompatible types when returning type 'int' but 'pte_t' was expected 1203 | return ptep_deref(ptep); | ^~~~~~~~~~~~~~~~ kernel/fork.c: At top level: kernel/fork.c:164:13: warning: no previous prototype for 'arch_release_task_struct' [-Wmissing-prototypes] 164 | void __weak arch_release_task_struct(struct task_struct *tsk) | ^~~~~~~~~~~~~~~~~~~~~~~~ kernel/fork.c:991:20: warning: no previous prototype for 'arch_task_cache_init' [-Wmissing-prototypes] 991 | void __init __weak arch_task_cache_init(void) { } | ^~~~~~~~~~~~~~~~~~~~ kernel/fork.c:1086:12: warning: no previous prototype for 'arch_dup_task_struct' [-Wmissing-prototypes] 1086 | int __weak arch_dup_task_struct(struct task_struct *dst, | ^~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from kernel/sysctl.c:45: include/linux/hugetlb.h: In function 'huge_ptep_clear_flush': >> include/linux/hugetlb.h:1203:16: error: implicit declaration of function 'ptep_deref' [-Werror=implicit-function-declaration] 1203 | return ptep_deref(ptep); | ^~~~~~~~~~ >> include/linux/hugetlb.h:1203:16: error: incompatible types when returning type 'int' but 'pte_t' was expected 1203 | return ptep_deref(ptep); | ^~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/ptep_deref +1203 include/linux/hugetlb.h 1199 1200 static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma, 1201 unsigned long addr, pte_t *ptep) 1202 { > 1203 return ptep_deref(ptep); 1204 } 1205 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
