Hi Pingfan, kernel test robot noticed the following build errors: [auto build test ERROR on bpf-next/net] [also build test ERROR on bpf/master arm64/for-next/core linus/master v6.16-rc7] [cannot apply to bpf-next/master next-20250722] [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/Pingfan-Liu/kexec_file-Make-kexec_image_load_default-global-visible/20250722-100843 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git net patch link: https://lore.kernel.org/r/20250722020319.5837-4-piliu%40redhat.com patch subject: [PATCHv4 03/12] bpf: Introduce bpf_copy_to_kernel() to buffer the content from bpf-prog config: x86_64-buildonly-randconfig-003-20250722 (https://download.01.org/0day-ci/archive/20250723/202507230035.9xLXz9Js-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250723/202507230035.9xLXz9Js-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/202507230035.9xLXz9Js-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): kernel/bpf/helpers_carrier.c:84:17: warning: no previous prototype for 'bpf_mem_range_result_put' [-Wmissing-prototypes] 84 | __bpf_kfunc int bpf_mem_range_result_put(struct mem_range_result *result) | ^~~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf/helpers_carrier.c:93:17: warning: no previous prototype for 'bpf_copy_to_kernel' [-Wmissing-prototypes] 93 | __bpf_kfunc int bpf_copy_to_kernel(const char *name, char *buf, int size) | ^~~~~~~~~~~~~~~~~~ kernel/bpf/helpers_carrier.c: In function 'bpf_copy_to_kernel': >> kernel/bpf/helpers_carrier.c:124:9: warning: enumeration value 'TYPE_VMAP' not handled in switch [-Wswitch] 124 | switch (alloc_type) { | ^~~~~~ -- >> ld: mm/mmu_notifier.o:mm/mmu_notifier.c:25: multiple definition of `__pcpu_unique_srcu_srcu_data'; kernel/bpf/helpers_carrier.o:kernel/bpf/helpers_carrier.c:13: first defined here -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
