Hi Menglong, kernel test robot noticed the following build errors: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Menglong-Dong/add-per-function-metadata-storage-support/20250528-115819 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20250528034712.138701-15-dongml2%40chinatelecom.cn patch subject: [PATCH bpf-next 14/25] bpf: tracing: add multi-link support config: arm-randconfig-002-20250528 (https://download.01.org/0day-ci/archive/20250528/202505281947.qIShGsJU-lkp@xxxxxxxxx/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250528/202505281947.qIShGsJU-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/202505281947.qIShGsJU-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> kernel/bpf/syscall.c:3727:2: error: call to undeclared function 'bpf_gtrampoline_unlink_prog'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 3727 | bpf_gtrampoline_unlink_prog(&multi_link->link); | ^ kernel/bpf/syscall.c:3727:2: note: did you mean 'bpf_trampoline_unlink_prog'? include/linux/bpf.h:1492:19: note: 'bpf_trampoline_unlink_prog' declared here 1492 | static inline int bpf_trampoline_unlink_prog(struct bpf_tramp_link *link, | ^ >> kernel/bpf/syscall.c:3995:8: error: call to undeclared function 'bpf_gtrampoline_link_prog'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 3995 | err = bpf_gtrampoline_link_prog(&link->link); | ^ kernel/bpf/syscall.c:3995:8: note: did you mean 'bpf_trampoline_link_prog'? include/linux/bpf.h:1486:19: note: 'bpf_trampoline_link_prog' declared here 1486 | static inline int bpf_trampoline_link_prog(struct bpf_tramp_link *link, | ^ kernel/bpf/syscall.c:4001:3: error: call to undeclared function 'bpf_gtrampoline_unlink_prog'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 4001 | bpf_gtrampoline_unlink_prog(&link->link); | ^ 3 errors generated. vim +/bpf_gtrampoline_unlink_prog +3727 kernel/bpf/syscall.c 3721 3722 static void bpf_tracing_multi_link_release(struct bpf_link *link) 3723 { 3724 struct bpf_tracing_multi_link *multi_link = 3725 container_of(link, struct bpf_tracing_multi_link, link.link); 3726 > 3727 bpf_gtrampoline_unlink_prog(&multi_link->link); 3728 __bpf_tracing_multi_link_release(multi_link); 3729 } 3730 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
