[PATCH 2/4] mm: pgalloc: support address-conditional pmd allocation
kernel test robot
lkp at intel.com
Wed Feb 21 09:08:33 PST 2024
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@intel.com/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@intel.com/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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202402220052.S3IUgmez-lkp@intel.com/
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
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