[kbuild-all] [android-goldfish:b120914098 1/1] ld: arch/x86/kernel/unwind_orc.o:undefined reference to `__gcov_merge_add'

Hi Todd, It's probably a bug fix that unveils the link errors. tree: https://android.googlesource.com/kernel/goldfish b120914098 head: 40b8f54d0fc77582e6302c8ee4f5ee005f3836e6 commit: 40b8f54d0fc77582e6302c8ee4f5ee005f3836e6 [1/1] ANDROID: fix kernelci build-break config: x86_64-randconfig-c001-201940 (attached as .config) compiler: gcc-7 (Debian 7.4.0-13) 7.4.0 reproduce: git checkout 40b8f54d0fc77582e6302c8ee4f5ee005f3836e6 # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): ld: arch/x86/kernel/apic/io_apic.o:(.data+0x2880): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/apic/io_apic.o: in function `_GLOBAL__sub_I_00100_0_mpc_ioapic_id': io_apic.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/apic/io_apic.o: in function `_GLOBAL__sub_D_00100_1_mpc_ioapic_id': io_apic.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/apic/htirq.o:(.data+0x320): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/apic/htirq.o: in function `_GLOBAL__sub_I_00100_0_arch_init_htirq_domain': htirq.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/apic/htirq.o: in function `_GLOBAL__sub_D_00100_1_arch_init_htirq_domain': htirq.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/apic/apic_flat_64.o:(.data+0xbc0): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/apic/apic_flat_64.o: in function `_GLOBAL__sub_I_00100_0_apic': apic_flat_64.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/apic/apic_flat_64.o: in function `_GLOBAL__sub_D_00100_1_apic': apic_flat_64.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/apic/probe_64.o:(.data+0x120): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/apic/probe_64.o: in function `_GLOBAL__sub_I_00100_0_default_setup_apic_routing': probe_64.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/apic/probe_64.o: in function `_GLOBAL__sub_D_00100_1_default_setup_apic_routing': probe_64.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/trace_clock.o:(.data+0x60): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/trace_clock.o: in function `_GLOBAL__sub_I_00100_0_trace_clock_x86_tsc': trace_clock.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/trace_clock.o: in function `_GLOBAL__sub_D_00100_1_trace_clock_x86_tsc': trace_clock.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/machine_kexec_64.o:(.data+0xa80): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/machine_kexec_64.o: in function `_GLOBAL__sub_I_00100_0_machine_kexec_prepare': machine_kexec_64.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/machine_kexec_64.o: in function `_GLOBAL__sub_D_00100_1_machine_kexec_prepare': machine_kexec_64.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/crash.o:(.data+0xae0): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/crash.o: in function `_GLOBAL__sub_I_00100_0_crash_vmclear_loaded_vmcss': crash.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/crash.o: in function `_GLOBAL__sub_D_00100_1_crash_vmclear_loaded_vmcss': crash.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/kexec-bzimage64.o:(.data+0x2c0): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/kexec-bzimage64.o: in function `_GLOBAL__sub_I_00100_0_kexec_bzImage64_ops': kexec-bzimage64.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/kexec-bzimage64.o: in function `_GLOBAL__sub_D_00100_1_kexec_bzImage64_ops': kexec-bzimage64.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/module.o:(.data+0x200): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/module.o: in function `_GLOBAL__sub_I_00100_0_module_alloc': module.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/module.o: in function `_GLOBAL__sub_D_00100_1_module_alloc': module.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/hpet.o:(.data+0x8e0): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/hpet.o: in function `_GLOBAL__sub_I_00100_0_hpet_readl': hpet.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/hpet.o: in function `_GLOBAL__sub_D_00100_1_hpet_readl': hpet.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/amd_nb.o:(.data+0x800): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/amd_nb.o: in function `_GLOBAL__sub_I_00100_0_amd_nb_misc_ids': amd_nb.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/amd_nb.o: in function `_GLOBAL__sub_D_00100_1_amd_nb_misc_ids': amd_nb.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/kvm.o:(.data+0x1020): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/kvm.o: in function `_GLOBAL__sub_I_00100_0_kvm_async_pf_task_wait': kvm.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/kvm.o: in function `_GLOBAL__sub_D_00100_1_kvm_async_pf_task_wait': kvm.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/kvmclock.o:(.data+0x6e0): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/kvmclock.o: in function `_GLOBAL__sub_I_00100_0_kvm_check_and_clear_guest_paused': kvmclock.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/kvmclock.o: in function `_GLOBAL__sub_D_00100_1_kvm_check_and_clear_guest_paused': kvmclock.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/paravirt.o:(.data+0x1480): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/paravirt.o: in function `_GLOBAL__sub_I_00100_0__paravirt_ident_32': paravirt.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/paravirt.o: in function `_GLOBAL__sub_D_00100_1__paravirt_ident_32': paravirt.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/paravirt_patch_64.o:(.data+0x120): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/paravirt_patch_64.o: in function `_GLOBAL__sub_I_00100_0_paravirt_patch_ident_32': paravirt_patch_64.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/paravirt_patch_64.o: in function `_GLOBAL__sub_D_00100_1_paravirt_patch_ident_32': paravirt_patch_64.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/pvclock.o:(.data+0x3a0): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/pvclock.o: in function `_GLOBAL__sub_I_00100_0_pvclock_set_flags': pvclock.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/pvclock.o: in function `_GLOBAL__sub_D_00100_1_pvclock_set_flags': pvclock.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/check.o:(.data+0x2c0): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/check.o: in function `_GLOBAL__sub_I_00100_0_setup_bios_corruption_check': check.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/check.o: in function `_GLOBAL__sub_D_00100_1_setup_bios_corruption_check': check.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/pci-swiotlb.o:(.data+0x2c0): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/pci-swiotlb.o: in function `_GLOBAL__sub_I_00100_0_x86_swiotlb_alloc_coherent': pci-swiotlb.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/pci-swiotlb.o: in function `_GLOBAL__sub_D_00100_1_x86_swiotlb_alloc_coherent': pci-swiotlb.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/sysfb.o:(.data+0xc0): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/sysfb.o: in function `_GLOBAL__sub_I_00100_0_sysfb.c': sysfb.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/sysfb.o: in function `_GLOBAL__sub_D_00100_1_sysfb.c': sysfb.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/perf_regs.o:(.data+0x180): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/perf_regs.o: in function `_GLOBAL__sub_I_00100_0_perf_reg_value': perf_regs.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/perf_regs.o: in function `_GLOBAL__sub_D_00100_1_perf_reg_value': perf_regs.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/unwind_orc.o: in function `_GLOBAL__sub_I_00100_0_cur_orc_ip_table': ld: arch/x86/kernel/unwind_orc.o: in function `_GLOBAL__sub_D_00100_1_cur_orc_ip_table': ld: arch/x86/kernel/mmconf-fam10h_64.o:(.data+0x260): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/mmconf-fam10h_64.o: in function `_GLOBAL__sub_I_00100_0_fam10h_check_enable_mmcfg': mmconf-fam10h_64.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/mmconf-fam10h_64.o: in function `_GLOBAL__sub_D_00100_1_fam10h_check_enable_mmcfg': mmconf-fam10h_64.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/kernel/vsmp_64.o:(.data+0x540): undefined reference to `__gcov_merge_add' ld: arch/x86/kernel/vsmp_64.o: in function `_GLOBAL__sub_I_00100_0_vsmp_save_fl': vsmp_64.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/kernel/vsmp_64.o: in function `_GLOBAL__sub_D_00100_1_vsmp_save_fl': vsmp_64.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/mm/init.o:(.data+0xce0): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/init.o: in function `_GLOBAL__sub_I_00100_0___cachemode2pte_tbl': init.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/init.o: in function `_GLOBAL__sub_D_00100_1___cachemode2pte_tbl': init.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/init_64.o:(.data+0x1b20): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/init_64.o: in function `_GLOBAL__sub_I_00100_0_kernel_ident_mapping_init': init_64.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/init_64.o: in function `_GLOBAL__sub_D_00100_1_kernel_ident_mapping_init': init_64.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/fault.o:(.data+0x1020): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/fault.o: in function `_GLOBAL__sub_I_00100_0_pgd_lock': fault.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/fault.o: in function `_GLOBAL__sub_D_00100_1_pgd_lock': fault.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/ioremap.o:(.data+0xf00): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/ioremap.o: in function `_GLOBAL__sub_I_00100_0_ioremap_change_attr': ioremap.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/ioremap.o: in function `_GLOBAL__sub_D_00100_1_ioremap_change_attr': ioremap.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/extable.o:(.data+0x5a0): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/extable.o: in function `_GLOBAL__sub_I_00100_0_ex_handler_default': extable.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/extable.o: in function `_GLOBAL__sub_D_00100_1_ex_handler_default': extable.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/pageattr.o:(.data+0x24e0): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/pageattr.o: in function `_GLOBAL__sub_I_00100_0_update_page_count': pageattr.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/pageattr.o: in function `_GLOBAL__sub_D_00100_1_update_page_count': pageattr.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/mmap.o:(.data+0x460): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/mmap.o: in function `_GLOBAL__sub_I_00100_0_va_align': mmap.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/mmap.o: in function `_GLOBAL__sub_D_00100_1_va_align': mmap.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/pat.o:(.data+0x1160): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/pat.o: in function `_GLOBAL__sub_I_00100_0_pat_disable': pat.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/pat.o: in function `_GLOBAL__sub_D_00100_1_pat_disable': pat.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/pgtable.o:(.data+0xe20): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/pgtable.o: in function `_GLOBAL__sub_I_00100_0___userpte_alloc_gfp': pgtable.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/pgtable.o: in function `_GLOBAL__sub_D_00100_1___userpte_alloc_gfp': pgtable.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/physaddr.o:(.data+0x180): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/physaddr.o: in function `_GLOBAL__sub_I_00100_0___phys_addr': physaddr.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/physaddr.o: in function `_GLOBAL__sub_D_00100_1___phys_addr': physaddr.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/setup_nx.o:(.data+0x120): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/setup_nx.o: in function `_GLOBAL__sub_I_00100_0_x86_configure_nx': setup_nx.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/setup_nx.o: in function `_GLOBAL__sub_D_00100_1_x86_configure_nx': setup_nx.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/tlb.o:(.data+0x1160): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/tlb.o: in function `_GLOBAL__sub_I_00100_0_clear_asid_other': tlb.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/mm/tlb.o: in function `_GLOBAL__sub_D_00100_1_clear_asid_other': tlb.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: arch/x86/mm/cpu_entry_area.o:(.data+0x2c0): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/cpu_entry_area.o: in function `_GLOBAL__sub_I_00100_0_get_cpu_entry_area': cpu_entry_area.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/cpu_entry_area.o: in function `_GLOBAL__sub_D_00100_1_get_cpu_entry_area': cpu_entry_area.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/pat_rbtree.o:(.data+0x400): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/pat_rbtree.o: in function `_GLOBAL__sub_I_00100_0_rbt_memtype_check_insert': pat_rbtree.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/pat_rbtree.o: in function `_GLOBAL__sub_D_00100_1_rbt_memtype_check_insert': pat_rbtree.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/kasan_init_64.o:(.data+0x700): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/kasan_init_64.o: in function `_GLOBAL__sub_I_00100_0_kasan_early_init': kasan_init_64.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/kasan_init_64.o: in function `_GLOBAL__sub_D_00100_1_kasan_early_init': kasan_init_64.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/mpx.o:(.data+0x8e0): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/mpx.o: in function `_GLOBAL__sub_I_00100_0_mpx_generate_siginfo': mpx.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/mpx.o: in function `_GLOBAL__sub_D_00100_1_mpx_generate_siginfo': mpx.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/pti.o:(.data+0x6e0): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/pti.o: in function `_GLOBAL__sub_I_00100_0_pti_check_boottime_disable': pti.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: arch/x86/mm/pti.o: in function `_GLOBAL__sub_D_00100_1_pti_check_boottime_disable': pti.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: arch/x86/mm/mem_encrypt.o:(.data+0x980): undefined reference to `__gcov_merge_add' ld: arch/x86/mm/mem_encrypt.o: in function `_GLOBAL__sub_I_00100_0_sme_me_mask': mem_encrypt.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: arch/x86/mm/mem_encrypt.o: in function `_GLOBAL__sub_D_00100_1_sme_me_mask': mem_encrypt.c:(.text.exit+0x1): undefined reference to `__gcov_exit' -- ld: kernel/cgroup/debug.o:(.data+0x600): undefined reference to `__gcov_merge_add' ld: kernel/cgroup/debug.o: in function `_GLOBAL__sub_I_00100_0_debug_cgrp_subsys': debug.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/cgroup/debug.o: in function `_GLOBAL__sub_D_00100_1_debug_cgrp_subsys': debug.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/configs.o:(.data+0x120): undefined reference to `__gcov_merge_add' ld: kernel/configs.o: in function `_GLOBAL__sub_I_00100_0_configs.c': configs.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/configs.o: in function `_GLOBAL__sub_D_00100_1_configs.c': configs.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/kheaders.o:(.data+0x120): undefined reference to `__gcov_merge_add' ld: kernel/kheaders.o: in function `_GLOBAL__sub_I_00100_0_kheaders.c': kheaders.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/kheaders.o: in function `_GLOBAL__sub_D_00100_1_kheaders.c': kheaders.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/stop_machine.o:(.data+0xae0): undefined reference to `__gcov_merge_add' ld: kernel/stop_machine.o: in function `_GLOBAL__sub_I_00100_0_stop_one_cpu': stop_machine.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/stop_machine.o: in function `_GLOBAL__sub_D_00100_1_stop_one_cpu': stop_machine.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/gcov/base.o:(.data+0x120): undefined reference to `__gcov_merge_add' ld: kernel/gcov/base.o: in function `_GLOBAL__sub_I_00100_0_gcov_lock': base.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/gcov/base.o: in function `_GLOBAL__sub_D_00100_1_gcov_lock': base.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/gcov/fs.o:(.data+0xb40): undefined reference to `__gcov_merge_add' ld: kernel/gcov/fs.o: in function `_GLOBAL__sub_I_00100_0_gcov_event': fs.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/gcov/fs.o: in function `_GLOBAL__sub_D_00100_1_gcov_event': fs.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/gcov/clang.o:(.data+0xa80): undefined reference to `__gcov_merge_add' ld: kernel/gcov/clang.o: in function `_GLOBAL__sub_I_00100_0_llvm_gcov_init': clang.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/gcov/clang.o: in function `_GLOBAL__sub_D_00100_1_llvm_gcov_init': clang.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/kcov.o:(.data+0x300): undefined reference to `__gcov_merge_add' ld: kernel/kcov.o: in function `_GLOBAL__sub_I_00100_0___sanitizer_cov_trace_pc': kcov.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: kernel/kcov.o: in function `_GLOBAL__sub_D_00100_1___sanitizer_cov_trace_pc': kcov.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: kernel/watchdog.o:(.data+0x10a0): undefined reference to `__gcov_merge_add' ld: kernel/watchdog.o: in function `_GLOBAL__sub_I_00100_0_watchdog_user_enabled': watchdog.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/watchdog.o: in function `_GLOBAL__sub_D_00100_1_watchdog_user_enabled': watchdog.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/relay.o:(.data+0x14a0): undefined reference to `__gcov_merge_add' ld: kernel/relay.o: in function `_GLOBAL__sub_I_00100_0_relay_buf_full': relay.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/relay.o: in function `_GLOBAL__sub_D_00100_1_relay_buf_full': relay.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/utsname_sysctl.o:(.data+0x120): undefined reference to `__gcov_merge_add' ld: kernel/utsname_sysctl.o: in function `_GLOBAL__sub_I_00100_0_uts_proc_notify': utsname_sysctl.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/utsname_sysctl.o: in function `_GLOBAL__sub_D_00100_1_uts_proc_notify': utsname_sysctl.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/latencytop.o:(.data+0x400): undefined reference to `__gcov_merge_add' ld: kernel/latencytop.o: in function `_GLOBAL__sub_I_00100_0_clear_all_latency_tracing': latencytop.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/latencytop.o: in function `_GLOBAL__sub_D_00100_1_clear_all_latency_tracing': latencytop.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/elfcore.o:(.data+0x180): undefined reference to `__gcov_merge_add' ld: kernel/elfcore.o: in function `_GLOBAL__sub_I_00100_0_elfcore.c': elfcore.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/elfcore.o: in function `_GLOBAL__sub_D_00100_1_elfcore.c': elfcore.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/irq_work.o:(.data+0x400): undefined reference to `__gcov_merge_add' ld: kernel/irq_work.o: in function `_GLOBAL__sub_I_00100_0_irq_work_queue_on': irq_work.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/irq_work.o: in function `_GLOBAL__sub_D_00100_1_irq_work_queue_on': irq_work.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/bpf/core.o:(.data+0x11c0): undefined reference to `__gcov_merge_add' ld: kernel/bpf/core.o: in function `_GLOBAL__sub_I_00100_0_bpf_internal_load_pointer_neg_helper': core.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/bpf/core.o: in function `_GLOBAL__sub_D_00100_1_bpf_internal_load_pointer_neg_helper': core.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/events/core.o:(.data+0x9500): undefined reference to `__gcov_merge_add' ld: kernel/events/core.o: in function `_GLOBAL__sub_I_00100_0_perf_sched_events': core.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/events/core.o: in function `_GLOBAL__sub_D_00100_1_perf_sched_events': core.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/events/ring_buffer.o:(.data+0xce0): undefined reference to `__gcov_merge_add' ld: kernel/events/ring_buffer.o: in function `_GLOBAL__sub_I_00100_0_perf_output_begin_forward': ring_buffer.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/events/ring_buffer.o: in function `_GLOBAL__sub_D_00100_1_perf_output_begin_forward': ring_buffer.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/events/callchain.o:(.data+0x4c0): undefined reference to `__gcov_merge_add' ld: kernel/events/callchain.o: in function `_GLOBAL__sub_I_00100_0_sysctl_perf_event_max_stack': callchain.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/events/callchain.o: in function `_GLOBAL__sub_D_00100_1_sysctl_perf_event_max_stack': callchain.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/events/hw_breakpoint.o:(.data+0xae0): undefined reference to `__gcov_merge_add' ld: kernel/events/hw_breakpoint.o: in function `_GLOBAL__sub_I_00100_0_reserve_bp_slot': hw_breakpoint.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/events/hw_breakpoint.o: in function `_GLOBAL__sub_D_00100_1_reserve_bp_slot': hw_breakpoint.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/padata.o:(.data+0x14a0): undefined reference to `__gcov_merge_add' ld: kernel/padata.o: in function `_GLOBAL__sub_I_00100_0_padata_do_parallel': padata.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/padata.o: in function `_GLOBAL__sub_D_00100_1_padata_do_parallel': padata.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/context_tracking.o: in function `_GLOBAL__sub_I_00100_0_context_tracking_enabled': context_tracking.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/context_tracking.o: in function `_GLOBAL__sub_D_00100_1_context_tracking_enabled': context_tracking.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/torture.o:(.data+0xe80): undefined reference to `__gcov_merge_add' ld: kernel/torture.o: in function `_GLOBAL__sub_I_00100_0_torture_offline': torture.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/torture.o: in function `_GLOBAL__sub_D_00100_1_torture_offline': torture.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: kernel/memremap.o:(.data+0xae0): undefined reference to `__gcov_merge_add' ld: kernel/memremap.o: in function `_GLOBAL__sub_I_00100_0_memremap': memremap.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: kernel/memremap.o: in function `_GLOBAL__sub_D_00100_1_memremap': memremap.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: certs/blacklist.o:(.data+0x2c0): undefined reference to `__gcov_merge_add' ld: certs/blacklist.o: in function `_GLOBAL__sub_I_00100_0_mark_hash_blacklisted': blacklist.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: certs/blacklist.o: in function `_GLOBAL__sub_D_00100_1_mark_hash_blacklisted': blacklist.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/filemap.o:(.data+0x2420): undefined reference to `__gcov_merge_add' ld: mm/filemap.o: in function `_GLOBAL__sub_I_00100_0___delete_from_page_cache': filemap.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/filemap.o: in function `_GLOBAL__sub_D_00100_1___delete_from_page_cache': filemap.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/mempool.o:(.data+0x6e0): undefined reference to `__gcov_merge_add' ld: mm/mempool.o: in function `_GLOBAL__sub_I_00100_0_mempool_destroy': mempool.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/mempool.o: in function `_GLOBAL__sub_D_00100_1_mempool_destroy': mempool.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/oom_kill.o:(.data+0xdc0): undefined reference to `__gcov_merge_add' ld: mm/oom_kill.o: in function `_GLOBAL__sub_I_00100_0_sysctl_oom_dump_tasks': oom_kill.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/oom_kill.o: in function `_GLOBAL__sub_D_00100_1_sysctl_oom_dump_tasks': oom_kill.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/maccess.o:(.data+0x120): undefined reference to `__gcov_merge_add' ld: mm/maccess.o: in function `_GLOBAL__sub_I_00100_0___probe_kernel_read': maccess.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/maccess.o: in function `_GLOBAL__sub_D_00100_1___probe_kernel_read': maccess.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/page_alloc.o:(.data+0x5680): undefined reference to `__gcov_merge_add' ld: mm/page_alloc.o: in function `_GLOBAL__sub_I_00100_0_pcpu_drain_mutex': page_alloc.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: mm/page_alloc.o: in function `_GLOBAL__sub_D_00100_1_pcpu_drain_mutex': page_alloc.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: mm/page-writeback.o:(.data+0x1c00): undefined reference to `__gcov_merge_add' ld: mm/page-writeback.o: in function `_GLOBAL__sub_I_00100_0_dirty_background_ratio': page-writeback.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/page-writeback.o: in function `_GLOBAL__sub_D_00100_1_dirty_background_ratio': page-writeback.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/readahead.o:(.data+0x800): undefined reference to `__gcov_merge_add' ld: mm/readahead.o: in function `_GLOBAL__sub_I_00100_0_file_ra_state_init': readahead.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/readahead.o: in function `_GLOBAL__sub_D_00100_1_file_ra_state_init': readahead.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/swap.o:(.data+0x16a0): undefined reference to `__gcov_merge_add' ld: mm/swap.o: in function `_GLOBAL__sub_I_00100_0___put_page': swap.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/swap.o: in function `_GLOBAL__sub_D_00100_1___put_page': swap.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/truncate.o:(.data+0xb40): undefined reference to `__gcov_merge_add' ld: mm/truncate.o: in function `_GLOBAL__sub_I_00100_0_do_invalidatepage': truncate.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/truncate.o: in function `_GLOBAL__sub_D_00100_1_do_invalidatepage': truncate.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/vmscan.o:(.data+0x2000): undefined reference to `__gcov_merge_add' ld: mm/vmscan.o: in function `_GLOBAL__sub_I_00100_0_vm_swappiness': vmscan.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/vmscan.o: in function `_GLOBAL__sub_D_00100_1_vm_swappiness': vmscan.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/shmem.o:(.data+0x2d60): undefined reference to `__gcov_merge_add' ld: mm/shmem.o: in function `_GLOBAL__sub_I_00100_0_shmem_getpage': shmem.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/shmem.o: in function `_GLOBAL__sub_D_00100_1_shmem_getpage': shmem.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/util.o:(.data+0xc20): undefined reference to `__gcov_merge_add' ld: mm/util.o: in function `_GLOBAL__sub_I_00100_0_kfree_const': util.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/util.o: in function `_GLOBAL__sub_D_00100_1_kfree_const': util.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/mmzone.o:(.data+0x200): undefined reference to `__gcov_merge_add' ld: mm/mmzone.o: in function `_GLOBAL__sub_I_00100_0_first_online_pgdat': mmzone.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: mm/mmzone.o: in function `_GLOBAL__sub_D_00100_1_first_online_pgdat': mmzone.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: mm/vmstat.o:(.data+0x1f40): undefined reference to `__gcov_merge_add' ld: mm/vmstat.o: in function `_GLOBAL__sub_I_00100_0_vm_event_states': vmstat.c:(.text.startup+0x8): undefined reference to `__gcov_init' ld: mm/vmstat.o: in function `_GLOBAL__sub_D_00100_1_vm_event_states': vmstat.c:(.text.exit+0x1): undefined reference to `__gcov_exit' ld: mm/backing-dev.o:(.data+0xdc0): undefined reference to `__gcov_merge_add' ld: mm/backing-dev.o: in function `_GLOBAL__sub_I_00100_0_noop_backing_dev_info': backing-dev.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/backing-dev.o: in function `_GLOBAL__sub_D_00100_1_noop_backing_dev_info': backing-dev.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/mm_init.o:(.data+0x200): undefined reference to `__gcov_merge_add' ld: mm/mm_init.o: in function `_GLOBAL__sub_I_00100_0_vm_committed_as_batch': mm_init.c:(.text.startup+0xd): undefined reference to `__gcov_init' ld: mm/mm_init.o: in function `_GLOBAL__sub_D_00100_1_vm_committed_as_batch': mm_init.c:(.text.exit+0x6): undefined reference to `__gcov_exit' ld: mm/mmu_context.o:(.data+0x180): undefined reference to `__gcov_merge_add' --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all 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