Hi Baoquan, kernel test robot noticed the following build errors: [auto build test ERROR on linus/master] [also build test ERROR on v6.7-rc8] [cannot apply to powerpc/next powerpc/fixes tip/x86/core arm64/for-next/core next-20240105] [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/Baoquan-He/kexec_core-move-kdump-related-codes-from-crash_core-c-to-kexec_core-c/20240105-223735 base: linus/master patch link: https://lore.kernel.org/r/20240105103305.557273-6-bhe%40redhat.com patch subject: [PATCH 5/5] crash: clean up CRASH_DUMP :::::: branch date: 2 days ago :::::: commit date: 2 days ago config: x86_64-randconfig-122-20240106 (https://download.01.org/0day-ci/archive/20240107/202401071326.52yn9Ftd-lkp@xxxxxxxxx/config) compiler: ClangBuiltLinux 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/20240107/202401071326.52yn9Ftd-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/r/202401071326.52yn9Ftd-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: crashk_res >>> referenced by initramfs.c:638 (init/initramfs.c:638) >>> init/initramfs.o:(kexec_free_initrd) in archive vmlinux.a >>> referenced by initramfs.c:638 (init/initramfs.c:638) >>> init/initramfs.o:(kexec_free_initrd) in archive vmlinux.a >>> referenced by initramfs.c:0 (init/initramfs.c:0) >>> init/initramfs.o:(kexec_free_initrd) in archive vmlinux.a >>> referenced 77 more times -- >> ld.lld: error: undefined symbol: parse_crashkernel >>> referenced by setup.c:479 (arch/x86/kernel/setup.c:479) >>> arch/x86/kernel/setup.o:(arch_reserve_crashkernel) in archive vmlinux.a -- >> ld.lld: error: undefined symbol: crashk_low_res >>> referenced by machine_kexec_64.c:539 (arch/x86/kernel/machine_kexec_64.c:539) >>> arch/x86/kernel/machine_kexec_64.o:(kexec_mark_crashkres) in archive vmlinux.a >>> referenced by machine_kexec_64.c:539 (arch/x86/kernel/machine_kexec_64.c:539) >>> arch/x86/kernel/machine_kexec_64.o:(kexec_mark_crashkres) in archive vmlinux.a >>> referenced by machine_kexec_64.c:539 (arch/x86/kernel/machine_kexec_64.c:539) >>> arch/x86/kernel/machine_kexec_64.o:(kexec_mark_crashkres) in archive vmlinux.a >>> referenced 36 more times -- >> ld.lld: error: undefined symbol: crash_update_vmcoreinfo_safecopy >>> referenced by kexec_core.c:522 (kernel/kexec_core.c:522) >>> kernel/kexec_core.o:(kimage_crash_copy_vmcoreinfo) in archive vmlinux.a >>> referenced by kexec_core.c:610 (kernel/kexec_core.c:610) >>> kernel/kexec_core.o:(kimage_free) in archive vmlinux.a -- >> ld.lld: error: undefined symbol: crash_save_vmcoreinfo >>> referenced by kexec_core.c:1053 (kernel/kexec_core.c:1053) >>> kernel/kexec_core.o:(__crash_kexec) in archive vmlinux.a -- >> ld.lld: error: undefined symbol: paddr_vmcoreinfo_note >>> referenced by kexec_core.c:1148 (kernel/kexec_core.c:1148) >>> kernel/kexec_core.o:(crash_prepare_elf64_headers) in archive vmlinux.a -- >> ld.lld: error: undefined symbol: append_elf_note >>> referenced by kexec_core.c:1390 (kernel/kexec_core.c:1390) >>> kernel/kexec_core.o:(crash_save_cpu) in archive vmlinux.a -- >> ld.lld: error: undefined symbol: final_note >>> referenced by kexec_core.c:1392 (kernel/kexec_core.c:1392) >>> kernel/kexec_core.o:(crash_save_cpu) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki