Hi Eric, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 1c6f93977947dbba1fc4d250c4eb8a7d4cfdecf1 commit: 62c177f4ed72c8c34d818f92f0d067a6c1b7cb80 [12982/13166] arm/kexec: refactor for kernel/Kconfig.kexec config: arm-randconfig-r002-20230703 (https://download.01.org/0day-ci/archive/20230705/202307050646.lQceIAoV-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1) reproduce: (https://download.01.org/0day-ci/archive/20230705/202307050646.lQceIAoV-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/202307050646.lQceIAoV-lkp@xxxxxxxxx/ Note: the linux-next/master HEAD 1c6f93977947dbba1fc4d250c4eb8a7d4cfdecf1 builds fine. It may have been fixed somewhere. All errors (new ones prefixed by >>): In file included from kernel/kexec_core.c:15: include/linux/kexec.h:41:2: error: KEXEC_SOURCE_MEMORY_LIMIT not defined #error KEXEC_SOURCE_MEMORY_LIMIT not defined ^ include/linux/kexec.h:45:2: error: KEXEC_DESTINATION_MEMORY_LIMIT not defined #error KEXEC_DESTINATION_MEMORY_LIMIT not defined ^ include/linux/kexec.h:49:2: error: KEXEC_CONTROL_MEMORY_LIMIT not defined #error KEXEC_CONTROL_MEMORY_LIMIT not defined ^ include/linux/kexec.h:57:2: error: KEXEC_CONTROL_PAGE_SIZE not defined #error KEXEC_CONTROL_PAGE_SIZE not defined ^ include/linux/kexec.h:61:2: error: KEXEC_ARCH not defined #error KEXEC_ARCH not defined ^ kernel/kexec_core.c:179:15: error: use of undeclared identifier 'KEXEC_DESTINATION_MEMORY_LIMIT' if (mend >= KEXEC_DESTINATION_MEMORY_LIMIT) ^ kernel/kexec_core.c:388:17: error: use of undeclared identifier 'KEXEC_CONTROL_MEMORY_LIMIT' if ((epfn >= (KEXEC_CONTROL_MEMORY_LIMIT >> PAGE_SHIFT)) || ^ kernel/kexec_core.c:454:18: error: use of undeclared identifier 'KEXEC_CONTROL_MEMORY_LIMIT' if (hole_end > KEXEC_CRASH_CONTROL_MEMORY_LIMIT) ^ include/linux/kexec.h:65:42: note: expanded from macro 'KEXEC_CRASH_CONTROL_MEMORY_LIMIT' #define KEXEC_CRASH_CONTROL_MEMORY_LIMIT KEXEC_CONTROL_MEMORY_LIMIT ^ kernel/kexec_core.c:721:6: error: use of undeclared identifier 'KEXEC_SOURCE_MEMORY_LIMIT' (KEXEC_SOURCE_MEMORY_LIMIT >> PAGE_SHIFT)) { ^ >> kernel/kexec_core.c:1061:4: error: implicit declaration of function 'crash_setup_regs' is invalid in C99 [-Werror,-Wimplicit-function-declaration] crash_setup_regs(&fixed_regs, regs); ^ 10 errors generated. vim +/crash_setup_regs +1061 kernel/kexec_core.c 7e99f8b69c11c1 Ricardo Ribalda 2023-01-04 1041 7bbee5ca3896f6 Hidehiro Kawai 2015-12-14 1042 /* 7bbee5ca3896f6 Hidehiro Kawai 2015-12-14 1043 * No panic_cpu check version of crash_kexec(). This function is called 7bbee5ca3896f6 Hidehiro Kawai 2015-12-14 1044 * only when panic_cpu holds the current CPU number; this is the only CPU 7bbee5ca3896f6 Hidehiro Kawai 2015-12-14 1045 * which processes crash_kexec routines. 7bbee5ca3896f6 Hidehiro Kawai 2015-12-14 1046 */ c207aee48037ab Josh Poimboeuf 2017-06-28 1047 void __noclone __crash_kexec(struct pt_regs *regs) 2965faa5e03d1e Dave Young 2015-09-09 1048 { 05c6257433b721 Valentin Schneider 2022-06-30 1049 /* Take the kexec_lock here to prevent sys_kexec_load 2965faa5e03d1e Dave Young 2015-09-09 1050 * running on one cpu from replacing the crash kernel 2965faa5e03d1e Dave Young 2015-09-09 1051 * we are using after a panic on a different cpu. 2965faa5e03d1e Dave Young 2015-09-09 1052 * 2965faa5e03d1e Dave Young 2015-09-09 1053 * If the crash kernel was not located in a fixed area 2965faa5e03d1e Dave Young 2015-09-09 1054 * of memory the xchg(&kexec_crash_image) would be 2965faa5e03d1e Dave Young 2015-09-09 1055 * sufficient. But since I reuse the memory... 2965faa5e03d1e Dave Young 2015-09-09 1056 */ 05c6257433b721 Valentin Schneider 2022-06-30 1057 if (kexec_trylock()) { 2965faa5e03d1e Dave Young 2015-09-09 1058 if (kexec_crash_image) { 2965faa5e03d1e Dave Young 2015-09-09 1059 struct pt_regs fixed_regs; 2965faa5e03d1e Dave Young 2015-09-09 1060 2965faa5e03d1e Dave Young 2015-09-09 @1061 crash_setup_regs(&fixed_regs, regs); 2965faa5e03d1e Dave Young 2015-09-09 1062 crash_save_vmcoreinfo(); 2965faa5e03d1e Dave Young 2015-09-09 1063 machine_crash_shutdown(&fixed_regs); 2965faa5e03d1e Dave Young 2015-09-09 1064 machine_kexec(kexec_crash_image); 2965faa5e03d1e Dave Young 2015-09-09 1065 } 05c6257433b721 Valentin Schneider 2022-06-30 1066 kexec_unlock(); 2965faa5e03d1e Dave Young 2015-09-09 1067 } 2965faa5e03d1e Dave Young 2015-09-09 1068 } c207aee48037ab Josh Poimboeuf 2017-06-28 1069 STACK_FRAME_NON_STANDARD(__crash_kexec); 2965faa5e03d1e Dave Young 2015-09-09 1070 :::::: The code at line 1061 was first introduced by commit :::::: 2965faa5e03d1e71e9ff9aa143fff39e0a77543a kexec: split kexec_load syscall from kexec core code :::::: TO: Dave Young <dyoung@xxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
