tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable head: 4b3b67ef8001c6f44317c6920022ffc6bd4b2b4b commit: f4da7afe07523ff8930c4466b09a15db18508cd4 [11/39] kexec_file: increase maximum file size to 4G config: riscv-randconfig-c024-20220622 (https://download.01.org/0day-ci/archive/20220623/202206231338.a6Jz3qZ3-lkp@xxxxxxxxx/config) compiler: riscv64-linux-gcc (GCC) 11.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?id=f4da7afe07523ff8930c4466b09a15db18508cd4 git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git git fetch --no-tags akpm-mm mm-nonmm-unstable git checkout f4da7afe07523ff8930c4466b09a15db18508cd4 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): riscv64-linux-ld: kernel/kexec_core.o: in function `kimage_crash_copy_vmcoreinfo': kernel/kexec_core.c:502: undefined reference to `machine_kexec_cleanup' riscv64-linux-ld: kernel/kexec_core.o: in function `kimage_free_pages': kernel/kexec_core.c:336: undefined reference to `machine_crash_shutdown' riscv64-linux-ld: kernel/kexec_core.c:337: undefined reference to `machine_kexec' riscv64-linux-ld: kernel/kexec_core.o: in function `kimage_free': kernel/kexec_core.c:651: undefined reference to `riscv_crash_save_regs' riscv64-linux-ld: kernel/kexec_core.o: in function `__nr_to_section': include/linux/mmzone.h:1403: undefined reference to `machine_shutdown' riscv64-linux-ld: include/linux/mmzone.h:1403: undefined reference to `machine_kexec' riscv64-linux-ld: kernel/kexec_file.o: in function `__section_mem_map_addr': >> include/linux/mmzone.h:1434: undefined reference to `machine_kexec_prepare' vim +1434 include/linux/mmzone.h f1eca35a0dc7cb Dan Williams 2019-07-18 1394 29751f6991e845 Andy Whitcroft 2005-06-23 1395 static inline struct mem_section *__nr_to_section(unsigned long nr) 29751f6991e845 Andy Whitcroft 2005-06-23 1396 { a431dbbc540532 Waiman Long 2022-04-08 1397 unsigned long root = SECTION_NR_TO_ROOT(nr); a431dbbc540532 Waiman Long 2022-04-08 1398 a431dbbc540532 Waiman Long 2022-04-08 1399 if (unlikely(root >= NR_SECTION_ROOTS)) a431dbbc540532 Waiman Long 2022-04-08 1400 return NULL; a431dbbc540532 Waiman Long 2022-04-08 1401 83e3c48729d9eb Kirill A. Shutemov 2017-09-29 1402 #ifdef CONFIG_SPARSEMEM_EXTREME a431dbbc540532 Waiman Long 2022-04-08 @1403 if (!mem_section || !mem_section[root]) 83e3c48729d9eb Kirill A. Shutemov 2017-09-29 1404 return NULL; 83e3c48729d9eb Kirill A. Shutemov 2017-09-29 1405 #endif a431dbbc540532 Waiman Long 2022-04-08 1406 return &mem_section[root][nr & SECTION_ROOT_MASK]; 29751f6991e845 Andy Whitcroft 2005-06-23 1407 } f1eca35a0dc7cb Dan Williams 2019-07-18 1408 extern size_t mem_section_usage_size(void); 29751f6991e845 Andy Whitcroft 2005-06-23 1409 29751f6991e845 Andy Whitcroft 2005-06-23 1410 /* 29751f6991e845 Andy Whitcroft 2005-06-23 1411 * We use the lower bits of the mem_map pointer to store def9b71ee651a6 Petr Tesarik 2018-01-31 1412 * a little bit of information. The pointer is calculated def9b71ee651a6 Petr Tesarik 2018-01-31 1413 * as mem_map - section_nr_to_pfn(pnum). The result is def9b71ee651a6 Petr Tesarik 2018-01-31 1414 * aligned to the minimum alignment of the two values: def9b71ee651a6 Petr Tesarik 2018-01-31 1415 * 1. All mem_map arrays are page-aligned. def9b71ee651a6 Petr Tesarik 2018-01-31 1416 * 2. section_nr_to_pfn() always clears PFN_SECTION_SHIFT def9b71ee651a6 Petr Tesarik 2018-01-31 1417 * lowest bits. PFN_SECTION_SHIFT is arch-specific def9b71ee651a6 Petr Tesarik 2018-01-31 1418 * (equal SECTION_SIZE_BITS - PAGE_SHIFT), and the def9b71ee651a6 Petr Tesarik 2018-01-31 1419 * worst combination is powerpc with 256k pages, def9b71ee651a6 Petr Tesarik 2018-01-31 1420 * which results in PFN_SECTION_SHIFT equal 6. def9b71ee651a6 Petr Tesarik 2018-01-31 1421 * To sum it up, at least 6 bits are available. 29751f6991e845 Andy Whitcroft 2005-06-23 1422 */ 29751f6991e845 Andy Whitcroft 2005-06-23 1423 #define SECTION_MARKED_PRESENT (1UL<<0) 29751f6991e845 Andy Whitcroft 2005-06-23 1424 #define SECTION_HAS_MEM_MAP (1UL<<1) 2d070eab2e8270 Michal Hocko 2017-07-06 1425 #define SECTION_IS_ONLINE (1UL<<2) 326e1b8f83a431 Dan Williams 2019-07-18 1426 #define SECTION_IS_EARLY (1UL<<3) 1f90a3477df3ff Dan Williams 2021-02-25 1427 #define SECTION_TAINT_ZONE_DEVICE (1UL<<4) 1f90a3477df3ff Dan Williams 2021-02-25 1428 #define SECTION_MAP_LAST_BIT (1UL<<5) 29751f6991e845 Andy Whitcroft 2005-06-23 1429 #define SECTION_MAP_MASK (~(SECTION_MAP_LAST_BIT-1)) 01c8d337d195ed Naoya Horiguchi 2021-09-02 1430 #define SECTION_NID_SHIFT 6 29751f6991e845 Andy Whitcroft 2005-06-23 1431 29751f6991e845 Andy Whitcroft 2005-06-23 1432 static inline struct page *__section_mem_map_addr(struct mem_section *section) 29751f6991e845 Andy Whitcroft 2005-06-23 1433 { 29751f6991e845 Andy Whitcroft 2005-06-23 @1434 unsigned long map = section->section_mem_map; 29751f6991e845 Andy Whitcroft 2005-06-23 1435 map &= SECTION_MAP_MASK; 29751f6991e845 Andy Whitcroft 2005-06-23 1436 return (struct page *)map; 29751f6991e845 Andy Whitcroft 2005-06-23 1437 } 29751f6991e845 Andy Whitcroft 2005-06-23 1438 :::::: The code at line 1434 was first introduced by commit :::::: 29751f6991e845f7d002a6ae520bf996b38c8dcd [PATCH] sparsemem hotplug base :::::: TO: Andy Whitcroft <apw@xxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://01.org/lkp
