tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: e134c93f788fb93fd6a3ec3af9af850a2048c7e6 commit: 7e86a8c4ac8d5dcf7dd58f5a4779d1a6ff0a827d [1636/9787] selftests/bpf: implement and test custom testmod_seq iterator compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce: # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7e86a8c4ac8d5dcf7dd58f5a4779d1a6ff0a827d git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 7e86a8c4ac8d5dcf7dd58f5a4779d1a6ff0a827d make O=/tmp/kselftest headers make O=/tmp/kselftest -C tools/testing/selftests 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/202304080951.l14IDv3n-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:32:1: warning: no previous prototype for 'bpf_testmod_test_struct_arg_1' [-Wmissing-prototypes] 32 | bpf_testmod_test_struct_arg_1(struct bpf_testmod_struct_arg_2 a, int b, int c) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:38:1: warning: no previous prototype for 'bpf_testmod_test_struct_arg_2' [-Wmissing-prototypes] 38 | bpf_testmod_test_struct_arg_2(int a, struct bpf_testmod_struct_arg_2 b, int c) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:44:1: warning: no previous prototype for 'bpf_testmod_test_struct_arg_3' [-Wmissing-prototypes] 44 | bpf_testmod_test_struct_arg_3(int a, int b, struct bpf_testmod_struct_arg_2 c) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:50:1: warning: no previous prototype for 'bpf_testmod_test_struct_arg_4' [-Wmissing-prototypes] 50 | bpf_testmod_test_struct_arg_4(struct bpf_testmod_struct_arg_1 a, int b, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:57:1: warning: no previous prototype for 'bpf_testmod_test_struct_arg_5' [-Wmissing-prototypes] 57 | bpf_testmod_test_struct_arg_5(void) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:63:1: warning: no previous prototype for 'bpf_testmod_test_mod_kfunc' [-Wmissing-prototypes] 63 | bpf_testmod_test_mod_kfunc(int i) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ >> tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:68:17: warning: no previous prototype for 'bpf_iter_testmod_seq_new' [-Wmissing-prototypes] 68 | __bpf_kfunc int bpf_iter_testmod_seq_new(struct bpf_iter_testmod_seq *it, s64 value, int cnt) | ^~~~~~~~~~~~~~~~~~~~~~~~ >> tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:81:18: warning: no previous prototype for 'bpf_iter_testmod_seq_next' [-Wmissing-prototypes] 81 | __bpf_kfunc s64 *bpf_iter_testmod_seq_next(struct bpf_iter_testmod_seq* it) | ^~~~~~~~~~~~~~~~~~~~~~~~~ >> tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:91:18: warning: no previous prototype for 'bpf_iter_testmod_seq_destroy' [-Wmissing-prototypes] 91 | __bpf_kfunc void bpf_iter_testmod_seq_destroy(struct bpf_iter_testmod_seq *it) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:109:1: warning: no previous prototype for 'bpf_testmod_test_btf_type_tag_user_1' [-Wmissing-prototypes] 109 | bpf_testmod_test_btf_type_tag_user_1(struct bpf_testmod_btf_type_tag_1 __user *arg) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:117:1: warning: no previous prototype for 'bpf_testmod_test_btf_type_tag_user_2' [-Wmissing-prototypes] 117 | bpf_testmod_test_btf_type_tag_user_2(struct bpf_testmod_btf_type_tag_2 *arg) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:122:1: warning: no previous prototype for 'bpf_testmod_test_btf_type_tag_percpu_1' [-Wmissing-prototypes] 122 | bpf_testmod_test_btf_type_tag_percpu_1(struct bpf_testmod_btf_type_tag_1 __percpu *arg) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:127:1: warning: no previous prototype for 'bpf_testmod_test_btf_type_tag_percpu_2' [-Wmissing-prototypes] 127 | bpf_testmod_test_btf_type_tag_percpu_2(struct bpf_testmod_btf_type_tag_3 *arg) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:131:14: warning: no previous prototype for 'bpf_testmod_loop_test' [-Wmissing-prototypes] 131 | noinline int bpf_testmod_loop_test(int n) | ^~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:143:30: warning: no previous prototype for 'bpf_testmod_return_ptr' [-Wmissing-prototypes] 143 | __weak noinline struct file *bpf_testmod_return_ptr(int arg) | ^~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:159:14: warning: no previous prototype for 'bpf_testmod_fentry_test1' [-Wmissing-prototypes] 159 | noinline int bpf_testmod_fentry_test1(int a) | ^~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:164:14: warning: no previous prototype for 'bpf_testmod_fentry_test2' [-Wmissing-prototypes] 164 | noinline int bpf_testmod_fentry_test2(int a, u64 b) | ^~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:169:14: warning: no previous prototype for 'bpf_testmod_fentry_test3' [-Wmissing-prototypes] 169 | noinline int bpf_testmod_fentry_test3(char a, int b, u64 c) | ^~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:177:1: warning: no previous prototype for 'bpf_testmod_test_read' [-Wmissing-prototypes] 177 | bpf_testmod_test_read(struct file *file, struct kobject *kobj, | ^~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:228:1: warning: no previous prototype for 'bpf_testmod_test_write' [-Wmissing-prototypes] 228 | bpf_testmod_test_write(struct file *file, struct kobject *kobj, | ^~~~~~~~~~~~~~~~~~~~~~ vim +/bpf_iter_testmod_seq_new +68 tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c 67 > 68 __bpf_kfunc int bpf_iter_testmod_seq_new(struct bpf_iter_testmod_seq *it, s64 value, int cnt) 69 { 70 if (cnt < 0) { 71 it->cnt = 0; 72 return -EINVAL; 73 } 74 75 it->value = value; 76 it->cnt = cnt; 77 78 return 0; 79 } 80 > 81 __bpf_kfunc s64 *bpf_iter_testmod_seq_next(struct bpf_iter_testmod_seq* it) 82 { 83 if (it->cnt <= 0) 84 return NULL; 85 86 it->cnt--; 87 88 return &it->value; 89 } 90 > 91 __bpf_kfunc void bpf_iter_testmod_seq_destroy(struct bpf_iter_testmod_seq *it) 92 { 93 it->cnt = 0; 94 } 95 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
