[linux-next:master 1605/10518] net/bpf/test_run.c:568:17: warning: no previous declaration for 'bpf_modify_return_test2'

[linux-next:master 1605/10518] net/bpf/test_run.c:568:17: warning: no previous declaration for 'bpf_modify_return_test2'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   ef66bf8aeb91fd331cf8f5dca8f9d7bca9ab2849
commit: 5e9cf77d81f9ba51019157dc55a3b73dc89a7cf4 [1605/10518] selftests/bpf: add testcase for TRACING with 6+ arguments
config: x86_64-randconfig-r032-20230816 (https://download.01.org/0day-ci/archive/20230817/202308170206.fZG3V1Gy-lkp@intel.com/config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce: (https://download.01.org/0day-ci/archive/20230817/202308170206.fZG3V1Gy-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308170206.fZG3V1Gy-lkp@intel.com/

All warnings (new ones prefixed by >>):

   net/bpf/test_run.c:508:17: warning: no previous declaration for 'bpf_fentry_test1' [-Wmissing-declarations]
    __bpf_kfunc int bpf_fentry_test1(int a)
                    ^~~~~~~~~~~~~~~~
   net/bpf/test_run.c:514:14: warning: no previous declaration for 'bpf_fentry_test2' [-Wmissing-declarations]
    int noinline bpf_fentry_test2(int a, u64 b)
                 ^~~~~~~~~~~~~~~~
   net/bpf/test_run.c:519:14: warning: no previous declaration for 'bpf_fentry_test3' [-Wmissing-declarations]
    int noinline bpf_fentry_test3(char a, int b, u64 c)
                 ^~~~~~~~~~~~~~~~
   net/bpf/test_run.c:524:14: warning: no previous declaration for 'bpf_fentry_test4' [-Wmissing-declarations]
    int noinline bpf_fentry_test4(void *a, char b, int c, u64 d)
                 ^~~~~~~~~~~~~~~~
   net/bpf/test_run.c:529:14: warning: no previous declaration for 'bpf_fentry_test5' [-Wmissing-declarations]
    int noinline bpf_fentry_test5(u64 a, void *b, short c, int d, u64 e)
                 ^~~~~~~~~~~~~~~~
   net/bpf/test_run.c:534:14: warning: no previous declaration for 'bpf_fentry_test6' [-Wmissing-declarations]
    int noinline bpf_fentry_test6(u64 a, void *b, short c, int d, void *e, u64 f)
                 ^~~~~~~~~~~~~~~~
   net/bpf/test_run.c:543:14: warning: no previous declaration for 'bpf_fentry_test7' [-Wmissing-declarations]
    int noinline bpf_fentry_test7(struct bpf_fentry_test_t *arg)
                 ^~~~~~~~~~~~~~~~
   net/bpf/test_run.c:548:14: warning: no previous declaration for 'bpf_fentry_test8' [-Wmissing-declarations]
    int noinline bpf_fentry_test8(struct bpf_fentry_test_t *arg)
                 ^~~~~~~~~~~~~~~~
   net/bpf/test_run.c:553:17: warning: no previous declaration for 'bpf_fentry_test9' [-Wmissing-declarations]
    __bpf_kfunc u32 bpf_fentry_test9(u32 *a)
                    ^~~~~~~~~~~~~~~~
   net/bpf/test_run.c:558:15: warning: no previous declaration for 'bpf_fentry_test_sinfo' [-Wmissing-declarations]
    void noinline bpf_fentry_test_sinfo(struct skb_shared_info *sinfo)
                  ^~~~~~~~~~~~~~~~~~~~~
   net/bpf/test_run.c:562:17: warning: no previous declaration for 'bpf_modify_return_test' [-Wmissing-declarations]
    __bpf_kfunc int bpf_modify_return_test(int a, int *b)
                    ^~~~~~~~~~~~~~~~~~~~~~
>> net/bpf/test_run.c:568:17: warning: no previous declaration for 'bpf_modify_return_test2' [-Wmissing-declarations]
    __bpf_kfunc int bpf_modify_return_test2(int a, int *b, short c, int d,
                    ^~~~~~~~~~~~~~~~~~~~~~~
   net/bpf/test_run.c:575:14: warning: no previous declaration for 'bpf_fentry_shadow_test' [-Wmissing-declarations]
    int noinline bpf_fentry_shadow_test(int a)
                 ^~~~~~~~~~~~~~~~~~~~~~
   net/bpf/test_run.c:597:18: warning: no previous declaration for 'bpf_kfunc_call_test_release' [-Wmissing-declarations]
    __bpf_kfunc void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p)
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   net/bpf/test_run.c:602:18: warning: no previous declaration for 'bpf_kfunc_call_memb_release' [-Wmissing-declarations]
    __bpf_kfunc void bpf_kfunc_call_memb_release(struct prog_test_member *p)
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/bpf_modify_return_test2 +568 net/bpf/test_run.c

   567	
 > 568	__bpf_kfunc int bpf_modify_return_test2(int a, int *b, short c, int d,
   569						void *e, char f, int g)
   570	{
   571		*b += 1;
   572		return a + *b + c + d + (long)e + f + g;
   573	}
   574	

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