Re: [PATCH v2 2/5] seccomp, bpf: Introduce SECCOMP_LOAD_FILTER operation

[kernel test robot]

Hi Hengqi,

kernel test robot noticed the following build errors:

[auto build test ERROR on kees/for-next/seccomp]
[also build test ERROR on bpf-next/master bpf/master linus/master v6.6-rc6 next-20231020]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Hengqi-Chen/seccomp-Refactor-filter-copy-create-for-reuse/20231017-134654
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/seccomp
patch link:    https://lore.kernel.org/r/20231015232953.84836-3-hengqi.chen%40gmail.com
patch subject: [PATCH v2 2/5] seccomp, bpf: Introduce SECCOMP_LOAD_FILTER operation
config: sh-shx3_defconfig (https://download.01.org/0day-ci/archive/20231023/202310230704.Uif0R7cz-lkp@xxxxxxxxx/config)
compiler: sh4-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231023/202310230704.Uif0R7cz-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/202310230704.Uif0R7cz-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   kernel/seccomp.c: In function 'seccomp_load_filter':
>> kernel/seccomp.c:2052:15: error: implicit declaration of function 'security_bpf_prog_alloc'; did you mean 'security_msg_msg_alloc'? [-Werror=implicit-function-declaration]
    2052 |         ret = security_bpf_prog_alloc(prog->aux);
         |               ^~~~~~~~~~~~~~~~~~~~~~~
         |               security_msg_msg_alloc
>> kernel/seccomp.c:2062:15: error: implicit declaration of function 'bpf_prog_new_fd'; did you mean 'bpf_prog_get_ok'? [-Werror=implicit-function-declaration]
    2062 |         ret = bpf_prog_new_fd(prog);
         |               ^~~~~~~~~~~~~~~
         |               bpf_prog_get_ok
   cc1: some warnings being treated as errors


vim +2052 kernel/seccomp.c

  2037	
  2038	static long seccomp_load_filter(const char __user *filter)
  2039	{
  2040		struct sock_fprog fprog;
  2041		struct bpf_prog *prog;
  2042		int ret;
  2043	
  2044		ret = seccomp_copy_user_filter(filter, &fprog);
  2045		if (ret)
  2046			return ret;
  2047	
  2048		ret = seccomp_prepare_prog(&prog, &fprog);
  2049		if (ret)
  2050			return ret;
  2051	
> 2052		ret = security_bpf_prog_alloc(prog->aux);
  2053		if (ret) {
  2054			bpf_prog_free(prog);
  2055			return ret;
  2056		}
  2057	
  2058		prog->aux->user = get_current_user();
  2059		atomic64_set(&prog->aux->refcnt, 1);
  2060		prog->type = BPF_PROG_TYPE_SECCOMP;
  2061	
> 2062		ret = bpf_prog_new_fd(prog);
  2063		if (ret < 0)
  2064			bpf_prog_put(prog);
  2065	
  2066		return ret;
  2067	}
  2068	#else
  2069	static inline long seccomp_set_mode_filter(unsigned int flags,
  2070						   const char __user *filter)
  2071	{
  2072		return -EINVAL;
  2073	}
  2074	

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