[ammarfaizi2-block:bpf/bpf-next/pr/bpf-sysctl 1/1] kernel/bpf/syscall.c:4944:13: warning: no previous prototype for function 'unpriv_ebpf_notify'

From: kernel test robot
Date: Wed Apr 13 2022 - 18:54:40 EST


tree: https://github.com/ammarfaizi2/linux-block bpf/bpf-next/pr/bpf-sysctl
head: 2900005ea287b11dcc8c1b9fcf24893b7ff41d6d
commit: 2900005ea287b11dcc8c1b9fcf24893b7ff41d6d [1/1] bpf: Move BPF sysctls from kernel/sysctl.c to BPF core
config: arm64-buildonly-randconfig-r005-20220413 (https://download.01.org/0day-ci/archive/20220414/202204140608.VUvJxAlq-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 6b7e6ea489f6dd45a9b0da9ac20871560917b9b0)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/ammarfaizi2/linux-block/commit/2900005ea287b11dcc8c1b9fcf24893b7ff41d6d
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block bpf/bpf-next/pr/bpf-sysctl
git checkout 2900005ea287b11dcc8c1b9fcf24893b7ff41d6d
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash kernel/bpf/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> kernel/bpf/syscall.c:4944:13: warning: no previous prototype for function 'unpriv_ebpf_notify' [-Wmissing-prototypes]
void __weak unpriv_ebpf_notify(int new_state)
^
kernel/bpf/syscall.c:4944:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __weak unpriv_ebpf_notify(int new_state)
^
static
1 warning generated.


vim +/unpriv_ebpf_notify +4944 kernel/bpf/syscall.c

4943
> 4944 void __weak unpriv_ebpf_notify(int new_state)
4945 {
4946 }
4947

--
0-DAY CI Kernel Test Service
https://01.org/lkp