Hi Blaise, kernel test robot noticed the following build errors: [auto build test ERROR on bpf/master] [also build test ERROR on linus/master v6.13-rc6] [cannot apply to bpf-next/master next-20250110] [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/Blaise-Boscaccy/bpf-Add-data-structures-for-managing-in-kernel-eBPF-relocations/20250110-064354 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git master patch link: https://lore.kernel.org/r/20250109214617.485144-11-bboscaccy%40linux.microsoft.com patch subject: [PATCH 10/14] bpf: Implement BTF fixup functionality config: i386-buildonly-randconfig-006-20250111 (https://download.01.org/0day-ci/archive/20250111/202501111043.1XoiVhsx-lkp@xxxxxxxxx/config) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250111/202501111043.1XoiVhsx-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/202501111043.1XoiVhsx-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): kernel/bpf/syscall.c:6438:22: error: incompatible pointer types passing 'Elf32_Sym *' (aka 'struct elf32_sym *') to parameter of type 'const Elf64_Sym *' (aka 'const struct elf64_sym *') [-Werror,-Wincompatible-pointer-types] 6438 | if (!sym_is_extern(&sym[i])) | ^~~~~~~ kernel/bpf/syscall.c:6082:44: note: passing argument to parameter 'sym' here 6082 | static bool sym_is_extern(const Elf64_Sym *sym) | ^ kernel/bpf/syscall.c:6463:20: error: call to undeclared function 'bpf_core_essential_name_len'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 6463 | ext_essent_len = bpf_core_essential_name_len(ext->name); | ^ >> kernel/bpf/syscall.c:6664:11: error: incompatible pointer types returning 'Elf32_Sym *' (aka 'struct elf32_sym *') from a function with result type 'Elf64_Sym *' (aka 'struct elf64_sym *') [-Werror,-Wincompatible-pointer-types] 6664 | return &sym[i]; | ^~~~~~~ kernel/bpf/syscall.c:7286:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion] 7286 | .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~ kernel/bpf/syscall.c:7336:41: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion] 7336 | .arg4_type = ARG_PTR_TO_FIXED_SIZE_MEM | MEM_UNINIT | MEM_WRITE | MEM_ALIGNED, | ~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~ 2 warnings and 3 errors generated. vim +6664 kernel/bpf/syscall.c 6648 6649 static Elf64_Sym *find_elf_var_sym(const struct bpf_obj *obj, const char *name) 6650 { 6651 unsigned int i; 6652 Elf_Shdr *symsec = &obj->sechdrs[obj->index.sym]; 6653 Elf_Sym *sym = (void *)obj->hdr + symsec->sh_offset; 6654 6655 for (i = 1; i < symsec->sh_size / sizeof(Elf_Sym); i++) { 6656 if (ELF64_ST_TYPE(sym[i].st_info) != STT_OBJECT) 6657 continue; 6658 6659 if (ELF64_ST_BIND(sym[i].st_info) != STB_GLOBAL && 6660 ELF64_ST_BIND(sym[i].st_info) != STB_WEAK) 6661 continue; 6662 6663 if (strcmp(name, obj->strtab + sym[i].st_name) == 0) > 6664 return &sym[i]; 6665 6666 } 6667 return ERR_PTR(-ENOENT); 6668 } 6669 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
