Hi Puranjay, 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/Puranjay-Mohan/bpf-arm64-simplify-exception-table-handling/20250811-192218 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20250811111828.13836-3-puranjay%40kernel.org patch subject: [PATCH bpf-next v2 2/3] bpf: Report arena faults to BPF stderr config: x86_64-randconfig-122-20250815 (https://download.01.org/0day-ci/archive/20250816/202508160152.El7IYy94-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250816/202508160152.El7IYy94-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/202508160152.El7IYy94-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): ld: vmlinux.o: in function `ex_handler_bpf': >> arch/x86/net/bpf_jit_comp.c:1450: undefined reference to `bpf_prog_report_arena_violation' vim +1450 arch/x86/net/bpf_jit_comp.c 1430 1431 bool ex_handler_bpf(const struct exception_table_entry *x, struct pt_regs *regs) 1432 { 1433 u32 reg = FIELD_GET(FIXUP_REG_MASK, x->fixup); 1434 u32 insn_len = FIELD_GET(FIXUP_INSN_LEN_MASK, x->fixup); 1435 bool is_arena = !!(x->fixup & FIXUP_ARENA_ACCESS); 1436 bool is_write = (reg == DONT_CLEAR); 1437 unsigned long addr; 1438 s16 off; 1439 u32 arena_reg; 1440 1441 /* jump over faulting load and clear dest register */ 1442 if (reg != DONT_CLEAR) 1443 *(unsigned long *)((void *)regs + reg) = 0; 1444 regs->ip += insn_len; 1445 1446 if (is_arena) { 1447 arena_reg = FIELD_GET(FIXUP_ARENA_REG_MASK, x->data); 1448 off = FIELD_GET(DATA_ARENA_OFFSET_MASK, x->data); 1449 addr = *(unsigned long *)((void *)regs + arena_reg) + off; > 1450 bpf_prog_report_arena_violation(is_write, addr); 1451 } 1452 1453 return true; 1454 } 1455 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
