tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: fe1998aa935b44ef873193c0772c43bce74f17dc commit: 9c66dc94b62aef23300f05f63404afb8990920b4 [10579/14992] bpf: Introduce css_task open-coded iterator kfuncs config: i386-buildonly-randconfig-006-20231026 (https://download.01.org/0day-ci/archive/20231026/202310260528.aHWgVFqq-lkp@xxxxxxxxx/config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231026/202310260528.aHWgVFqq-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310260528.aHWgVFqq-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): kernel/bpf/task_iter.c:831:17: warning: no previous declaration for 'bpf_iter_task_vma_new' [-Wmissing-declarations] __bpf_kfunc int bpf_iter_task_vma_new(struct bpf_iter_task_vma *it, ^~~~~~~~~~~~~~~~~~~~~ kernel/bpf/task_iter.c:875:36: warning: no previous declaration for 'bpf_iter_task_vma_next' [-Wmissing-declarations] __bpf_kfunc struct vm_area_struct *bpf_iter_task_vma_next(struct bpf_iter_task_vma *it) ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf/task_iter.c:884:18: warning: no previous declaration for 'bpf_iter_task_vma_destroy' [-Wmissing-declarations] __bpf_kfunc void bpf_iter_task_vma_destroy(struct bpf_iter_task_vma *it) ^~~~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf/task_iter.c:909:17: warning: no previous declaration for 'bpf_iter_css_task_new' [-Wmissing-declarations] __bpf_kfunc int bpf_iter_css_task_new(struct bpf_iter_css_task *it, ^~~~~~~~~~~~~~~~~~~~~ kernel/bpf/task_iter.c: In function 'bpf_iter_css_task_new': kernel/bpf/task_iter.c:919:7: error: 'CSS_TASK_ITER_PROCS' undeclared (first use in this function); did you mean 'BPF_TASK_ITER_TGID'? case CSS_TASK_ITER_PROCS | CSS_TASK_ITER_THREADED: ^~~~~~~~~~~~~~~~~~~ BPF_TASK_ITER_TGID kernel/bpf/task_iter.c:919:7: note: each undeclared identifier is reported only once for each function it appears in kernel/bpf/task_iter.c:919:29: error: 'CSS_TASK_ITER_THREADED' undeclared (first use in this function); did you mean 'CSS_TASK_ITER_PROCS'? case CSS_TASK_ITER_PROCS | CSS_TASK_ITER_THREADED: ^~~~~~~~~~~~~~~~~~~~~~ CSS_TASK_ITER_PROCS kernel/bpf/task_iter.c:927:53: error: invalid application of 'sizeof' to incomplete type 'struct css_task_iter' kit->css_it = bpf_mem_alloc(&bpf_global_ma, sizeof(struct css_task_iter)); ^~~~~~ kernel/bpf/task_iter.c:930:2: error: implicit declaration of function 'css_task_iter_start'; did you mean '__sg_page_iter_start'? [-Werror=implicit-function-declaration] css_task_iter_start(css, flags, kit->css_it); ^~~~~~~~~~~~~~~~~~~ __sg_page_iter_start kernel/bpf/task_iter.c: At top level: kernel/bpf/task_iter.c:934:33: warning: no previous declaration for 'bpf_iter_css_task_next' [-Wmissing-declarations] __bpf_kfunc struct task_struct *bpf_iter_css_task_next(struct bpf_iter_css_task *it) ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf/task_iter.c: In function 'bpf_iter_css_task_next': kernel/bpf/task_iter.c:940:9: error: implicit declaration of function 'css_task_iter_next'; did you mean '__sg_page_iter_next'? [-Werror=implicit-function-declaration] return css_task_iter_next(kit->css_it); ^~~~~~~~~~~~~~~~~~ __sg_page_iter_next >> kernel/bpf/task_iter.c:940:9: warning: return makes pointer from integer without a cast [-Wint-conversion] return css_task_iter_next(kit->css_it); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf/task_iter.c: At top level: kernel/bpf/task_iter.c:943:18: warning: no previous declaration for 'bpf_iter_css_task_destroy' [-Wmissing-declarations] __bpf_kfunc void bpf_iter_css_task_destroy(struct bpf_iter_css_task *it) ^~~~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf/task_iter.c: In function 'bpf_iter_css_task_destroy': kernel/bpf/task_iter.c:949:2: error: implicit declaration of function 'css_task_iter_end'; did you mean 'vma_iter_end'? [-Werror=implicit-function-declaration] css_task_iter_end(kit->css_it); ^~~~~~~~~~~~~~~~~ vma_iter_end cc1: some warnings being treated as errors vim +940 kernel/bpf/task_iter.c 933 934 __bpf_kfunc struct task_struct *bpf_iter_css_task_next(struct bpf_iter_css_task *it) 935 { 936 struct bpf_iter_css_task_kern *kit = (void *)it; 937 938 if (!kit->css_it) 939 return NULL; > 940 return css_task_iter_next(kit->css_it); 941 } 942 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
