On 8/10/24 04:32, kernel test robot wrote: > Hi Leon, > > kernel test robot noticed the following build warnings: > > [auto build test WARNING on bpf-next/master] > > url: https://github.com/intel-lab-lkp/linux/commits/Leon-Hwang/bpf-Prevent-tailcall-infinite-loop-caused-by-freplace/20241006-210309 > base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master > patch link: https://lore.kernel.org/r/20241006130130.77125-2-leon.hwang%40linux.dev > patch subject: [PATCH bpf-next v5 1/3] bpf: Prevent tailcall infinite loop caused by freplace > config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20241008/202410080455.vy5GT8Vz-lkp@xxxxxxxxx/config) > compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241008/202410080455.vy5GT8Vz-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/202410080455.vy5GT8Vz-lkp@xxxxxxxxx/ > > All warnings (new ones prefixed by >>): > > In file included from kernel/fork.c:53: > In file included from include/linux/security.h:35: >>> include/linux/bpf.h:1392:5: warning: no previous prototype for function 'bpf_extension_link_prog' [-Wmissing-prototypes] > 1392 | int bpf_extension_link_prog(struct bpf_tramp_link *link, > | ^ > include/linux/bpf.h:1392:1: note: declare 'static' if the function is not intended to be used outside of this translation unit > 1392 | int bpf_extension_link_prog(struct bpf_tramp_link *link, > | ^ > | static >>> include/linux/bpf.h:1398:5: warning: no previous prototype for function 'bpf_extension_unlink_prog' [-Wmissing-prototypes] > 1398 | int bpf_extension_unlink_prog(struct bpf_tramp_link *link, > | ^ > include/linux/bpf.h:1398:1: note: declare 'static' if the function is not intended to be used outside of this translation unit > 1398 | int bpf_extension_unlink_prog(struct bpf_tramp_link *link, > | ^ > | static > 2 warnings generated. Ack. I'll add 'static' in patch v6. Thanks, Leon [...]
