Hi Maxwell, kernel test robot noticed the following build errors: [auto build test ERROR on b401b621758e46812da61fa58a67c3fd8d91de0d] url: https://github.com/intel-lab-lkp/linux/commits/Maxwell-Bland/mm-vmalloc-allow-arch-specific-vmalloc_node-overrides/20240221-043458 base: b401b621758e46812da61fa58a67c3fd8d91de0d patch link: https://lore.kernel.org/r/20240220203256.31153-3-mbland%40motorola.com patch subject: [PATCH 2/4] mm: pgalloc: support address-conditional pmd allocation config: um-allmodconfig (https://download.01.org/0day-ci/archive/20240222/202402220052.S3IUgmez-lkp@xxxxxxxxx/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 36adfec155de366d722f2bac8ff9162289dcf06c) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240222/202402220052.S3IUgmez-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/202402220052.S3IUgmez-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): In file included from kernel/fork.c:34: In file included from include/linux/mempolicy.h:15: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 547 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from kernel/fork.c:34: In file included from include/linux/mempolicy.h:15: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from kernel/fork.c:34: In file included from include/linux/mempolicy.h:15: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 584 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 692 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 700 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 708 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 717 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 726 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 735 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ In file included from kernel/fork.c:105: In file included from arch/um/include/asm/pgalloc.h:13: >> include/asm-generic/pgalloc.h:149:20: warning: function 'pmd_populate_kernel' has internal linkage but is not defined [-Wundefined-internal] 149 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, | ^ include/asm-generic/pgalloc.h:159:2: note: used here 159 | pmd_populate_kernel(mm, pmdp, ptep); | ^ 13 warnings generated. -- In file included from mm/mremap.c:12: In file included from include/linux/mm_inline.h:8: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 547 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from mm/mremap.c:12: In file included from include/linux/mm_inline.h:8: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from mm/mremap.c:12: In file included from include/linux/mm_inline.h:8: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 584 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 692 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 700 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 708 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 717 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 726 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 735 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ In file included from mm/mremap.c:31: In file included from arch/um/include/asm/pgalloc.h:13: >> include/asm-generic/pgalloc.h:149:20: warning: function 'pmd_populate_kernel' has internal linkage but is not defined [-Wundefined-internal] 149 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, | ^ include/asm-generic/pgalloc.h:159:2: note: used here 159 | pmd_populate_kernel(mm, pmdp, ptep); | ^ mm/mremap.c:228:20: warning: unused function 'arch_supports_page_table_move' [-Wunused-function] 228 | static inline bool arch_supports_page_table_move(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mm/mremap.c:227:39: note: expanded from macro 'arch_supports_page_table_move' 227 | #define arch_supports_page_table_move arch_supports_page_table_move | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 14 warnings generated. -- arch/um/kernel/skas/mmu.c:17:5: warning: no previous prototype for function 'init_new_context' [-Wmissing-prototypes] 17 | int init_new_context(struct task_struct *task, struct mm_struct *mm) | ^ arch/um/kernel/skas/mmu.c:17:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 17 | int init_new_context(struct task_struct *task, struct mm_struct *mm) | ^ | static arch/um/kernel/skas/mmu.c:60:6: warning: no previous prototype for function 'destroy_context' [-Wmissing-prototypes] 60 | void destroy_context(struct mm_struct *mm) | ^ arch/um/kernel/skas/mmu.c:60:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 60 | void destroy_context(struct mm_struct *mm) | ^ | static In file included from arch/um/kernel/skas/mmu.c:11: In file included from arch/um/include/asm/pgalloc.h:13: >> include/asm-generic/pgalloc.h:149:20: warning: function 'pmd_populate_kernel' has internal linkage but is not defined [-Wundefined-internal] 149 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, | ^ include/asm-generic/pgalloc.h:159:2: note: used here 159 | pmd_populate_kernel(mm, pmdp, ptep); | ^ 3 warnings generated. -- /usr/bin/ld: warning: .tmp_vmlinux.kallsyms1 has a LOAD segment with RWX permissions /usr/bin/ld: mm/memory.o: in function `pmd_populate_kernel_at': >> include/asm-generic/pgalloc.h:159: undefined reference to `pmd_populate_kernel' clang: error: linker command failed with exit code 1 (use -v to see invocation) vim +159 include/asm-generic/pgalloc.h 144 145 #ifdef __HAVE_ARCH_ADDR_COND_PMD 146 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, 147 pte_t *ptep, unsigned long address); 148 #else > 149 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, 150 pte_t *ptep); 151 #endif 152 153 static inline void pmd_populate_kernel_at(struct mm_struct *mm, pmd_t *pmdp, 154 pte_t *ptep, unsigned long address) 155 { 156 #ifdef __HAVE_ARCH_ADDR_COND_PMD 157 pmd_populate_kernel(mm, pmdp, ptep, address); 158 #else > 159 pmd_populate_kernel(mm, pmdp, ptep); 160 #endif 161 } 162 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
