Hi Siddharth, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf-next/net] [also build test WARNING on bpf-next/master bpf/master linus/master v6.17-rc5 next-20250905] [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/Siddharth-Chintamaneni/bpf-Introduce-new-structs-and-struct-fields-for-fast-path-termination/20250908-070655 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git net patch link: https://lore.kernel.org/r/20250907230415.289327-4-sidchintamaneni%40gmail.com patch subject: [PATCH 3/4] bpf: runtime part of fast-path termination approach config: s390-randconfig-001-20250908 (https://download.01.org/0day-ci/archive/20250908/202509081350.yqptixjh-lkp@xxxxxxxxx/config) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 7fb1dc08d2f025aad5777bb779dfac1197e9ef87) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250908/202509081350.yqptixjh-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/202509081350.yqptixjh-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> kernel/bpf/core.c:109:13: warning: no previous prototype for function 'in_place_patch_bpf_prog' [-Wmissing-prototypes] 109 | void __weak in_place_patch_bpf_prog(struct bpf_prog *prog) | ^ kernel/bpf/core.c:109:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 109 | void __weak in_place_patch_bpf_prog(struct bpf_prog *prog) | ^ | static >> kernel/bpf/core.c:114:13: warning: no previous prototype for function 'bpf_die' [-Wmissing-prototypes] 114 | void __weak bpf_die(struct bpf_prog *prog) | ^ kernel/bpf/core.c:114:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 114 | void __weak bpf_die(struct bpf_prog *prog) | ^ | static >> kernel/bpf/core.c:119:13: warning: no previous prototype for function 'bpf_prog_termination_deferred' [-Wmissing-prototypes] 119 | void __weak bpf_prog_termination_deferred(struct work_struct *work) | ^ kernel/bpf/core.c:119:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 119 | void __weak bpf_prog_termination_deferred(struct work_struct *work) | ^ | static >> kernel/bpf/core.c:124:13: warning: no previous prototype for function 'bpf_softlockup' [-Wmissing-prototypes] 124 | void __weak bpf_softlockup(u32 dur_s) | ^ kernel/bpf/core.c:124:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 124 | void __weak bpf_softlockup(u32 dur_s) | ^ | static 4 warnings generated. vim +/in_place_patch_bpf_prog +109 kernel/bpf/core.c 107 108 > 109 void __weak in_place_patch_bpf_prog(struct bpf_prog *prog) 110 { 111 return; 112 } 113 > 114 void __weak bpf_die(struct bpf_prog *prog) 115 { 116 return; 117 } 118 > 119 void __weak bpf_prog_termination_deferred(struct work_struct *work) 120 { 121 return; 122 } 123 > 124 void __weak bpf_softlockup(u32 dur_s) 125 { 126 return; 127 } 128 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
