tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 5d562c48a21eeb029a8fd3f18e1b31fd83660474 commit: fee356ede980b6c2c8db612e18b25738356d6744 [2567/13282] selftests/bpf: Add bpf_testmod_fentry_* functions 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=fee356ede980b6c2c8db612e18b25738356d6744 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 fee356ede980b6c2c8db612e18b25738356d6744 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 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:81:1: warning: no previous prototype for 'bpf_testmod_test_btf_type_tag_user_1' [-Wmissing-prototypes] 81 | 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:89:1: warning: no previous prototype for 'bpf_testmod_test_btf_type_tag_user_2' [-Wmissing-prototypes] 89 | 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:94:1: warning: no previous prototype for 'bpf_testmod_test_btf_type_tag_percpu_1' [-Wmissing-prototypes] 94 | 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:99:1: warning: no previous prototype for 'bpf_testmod_test_btf_type_tag_percpu_2' [-Wmissing-prototypes] 99 | 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:103:14: warning: no previous prototype for 'bpf_testmod_loop_test' [-Wmissing-prototypes] 103 | noinline int bpf_testmod_loop_test(int n) | ^~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:115:30: warning: no previous prototype for 'bpf_testmod_return_ptr' [-Wmissing-prototypes] 115 | __weak noinline struct file *bpf_testmod_return_ptr(int arg) | ^~~~~~~~~~~~~~~~~~~~~~ >> tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:131:14: warning: no previous prototype for 'bpf_testmod_fentry_test1' [-Wmissing-prototypes] 131 | noinline int bpf_testmod_fentry_test1(int a) | ^~~~~~~~~~~~~~~~~~~~~~~~ >> tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:136:14: warning: no previous prototype for 'bpf_testmod_fentry_test2' [-Wmissing-prototypes] 136 | noinline int bpf_testmod_fentry_test2(int a, u64 b) | ^~~~~~~~~~~~~~~~~~~~~~~~ >> tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:141:14: warning: no previous prototype for 'bpf_testmod_fentry_test3' [-Wmissing-prototypes] 141 | noinline int bpf_testmod_fentry_test3(char a, int b, u64 c) | ^~~~~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:149:1: warning: no previous prototype for 'bpf_testmod_test_read' [-Wmissing-prototypes] 149 | bpf_testmod_test_read(struct file *file, struct kobject *kobj, | ^~~~~~~~~~~~~~~~~~~~~ tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:200:1: warning: no previous prototype for 'bpf_testmod_test_write' [-Wmissing-prototypes] 200 | bpf_testmod_test_write(struct file *file, struct kobject *kobj, | ^~~~~~~~~~~~~~~~~~~~~~ vim +/bpf_testmod_fentry_test1 +131 tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c 130 > 131 noinline int bpf_testmod_fentry_test1(int a) 132 { 133 return a + 1; 134 } 135 > 136 noinline int bpf_testmod_fentry_test2(int a, u64 b) 137 { 138 return a + b; 139 } 140 > 141 noinline int bpf_testmod_fentry_test3(char a, int b, u64 c) 142 { 143 return a + b + c; 144 } 145 -- 0-DAY CI Kernel Test Service https://01.org/lkp