Re: [PATCH] mm: Change calling convention for ->huge_fault

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Hi Matthew,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Matthew-Wilcox-Oracle/mm-Change-calling-convention-for-huge_fault/20230818-040348
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20230817200150.1230317-1-willy%40infradead.org
patch subject: [PATCH] mm: Change calling convention for ->huge_fault
config: hexagon-randconfig-r035-20230818 (https://download.01.org/0day-ci/archive/20230818/202308181255.bMCo950t-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230818/202308181255.bMCo950t-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/202308181255.bMCo950t-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from mm/memory.c:42:
   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/hexagon/include/generated/asm/hardirq.h:1:
   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/hexagon/include/asm/io.h:337:
   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/memory.c:42:
   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/hexagon/include/generated/asm/hardirq.h:1:
   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/hexagon/include/asm/io.h:337:
   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/memory.c:42:
   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/hexagon/include/generated/asm/hardirq.h:1:
   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/hexagon/include/asm/io.h:337:
   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);
         |                                                       ~~~~~~~~~~ ^
>> mm/memory.c:4876:39: error: use of undeclared identifier 'PTE_SHIFT'
    4876 |                 return vma->vm_ops->huge_fault(vmf, PMD_ORDER);
         |                                                     ^
   include/linux/pgtable.h:8:32: note: expanded from macro 'PMD_ORDER'
       8 | #define PMD_ORDER       (PMD_SHIFT - PTE_SHIFT)
         |                                      ^
   mm/memory.c:4896:39: error: use of undeclared identifier 'PTE_SHIFT'
    4896 |                         ret = vma->vm_ops->huge_fault(vmf, PMD_ORDER);
         |                                                            ^
   include/linux/pgtable.h:8:32: note: expanded from macro 'PMD_ORDER'
       8 | #define PMD_ORDER       (PMD_SHIFT - PTE_SHIFT)
         |                                      ^
   6 warnings and 2 errors generated.
--
   In file included from fs/xfs/xfs_trace.c:6:
   In file included from fs/xfs/xfs.h:22:
   In file included from fs/xfs/xfs_linux.h:31:
   In file included from include/linux/blkdev.h:9:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:12:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   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/hexagon/include/asm/io.h:337:
   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 fs/xfs/xfs_trace.c:6:
   In file included from fs/xfs/xfs.h:22:
   In file included from fs/xfs/xfs_linux.h:31:
   In file included from include/linux/blkdev.h:9:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:12:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   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/hexagon/include/asm/io.h:337:
   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 fs/xfs/xfs_trace.c:6:
   In file included from fs/xfs/xfs.h:22:
   In file included from fs/xfs/xfs_linux.h:31:
   In file included from include/linux/blkdev.h:9:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:12:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   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/hexagon/include/asm/io.h:337:
   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);
         |                                                       ~~~~~~~~~~ ^
   In file included from fs/xfs/xfs_trace.c:45:
   In file included from fs/xfs/xfs_trace.h:4428:
   In file included from include/trace/define_trace.h:102:
   In file included from include/trace/trace_events.h:94:
>> fs/xfs/xfs_trace.h:805:19: error: use of undeclared identifier 'PTE_SHIFT'
     805 | TRACE_DEFINE_ENUM(PMD_ORDER);
         |                   ^
   include/linux/pgtable.h:8:32: note: expanded from macro 'PMD_ORDER'
       8 | #define PMD_ORDER       (PMD_SHIFT - PTE_SHIFT)
         |                                      ^
   In file included from fs/xfs/xfs_trace.c:45:
   In file included from fs/xfs/xfs_trace.h:4428:
   In file included from include/trace/define_trace.h:102:
   In file included from include/trace/trace_events.h:94:
   fs/xfs/xfs_trace.h:806:19: error: use of undeclared identifier 'PTE_SHIFT'
     806 | TRACE_DEFINE_ENUM(PUD_ORDER);
         |                   ^
   include/linux/pgtable.h:9:32: note: expanded from macro 'PUD_ORDER'
       9 | #define PUD_ORDER       (PUD_SHIFT - PTE_SHIFT)
         |                                      ^
   In file included from fs/xfs/xfs_trace.c:45:
   In file included from fs/xfs/xfs_trace.h:4428:
   In file included from include/trace/define_trace.h:102:
   In file included from include/trace/trace_events.h:237:
   fs/xfs/xfs_trace.h:831:6: error: use of undeclared identifier 'PTE_SHIFT'
     831 |                         { PMD_ORDER,    "PMD" },
         |                           ^
   include/linux/pgtable.h:8:32: note: expanded from macro 'PMD_ORDER'
       8 | #define PMD_ORDER       (PMD_SHIFT - PTE_SHIFT)
         |                                      ^
   In file included from fs/xfs/xfs_trace.c:45:
   In file included from fs/xfs/xfs_trace.h:4428:
   In file included from include/trace/define_trace.h:102:
   In file included from include/trace/trace_events.h:237:
   fs/xfs/xfs_trace.h:832:6: error: use of undeclared identifier 'PTE_SHIFT'
     832 |                         { PUD_ORDER,    "PUD" }),
         |                           ^
   include/linux/pgtable.h:9:32: note: expanded from macro 'PUD_ORDER'
       9 | #define PUD_ORDER       (PUD_SHIFT - PTE_SHIFT)
         |                                      ^
   6 warnings and 4 errors generated.


vim +/PTE_SHIFT +4876 mm/memory.c

  4869	
  4870	static inline vm_fault_t create_huge_pmd(struct vm_fault *vmf)
  4871	{
  4872		struct vm_area_struct *vma = vmf->vma;
  4873		if (vma_is_anonymous(vma))
  4874			return do_huge_pmd_anonymous_page(vmf);
  4875		if (vma->vm_ops->huge_fault)
> 4876			return vma->vm_ops->huge_fault(vmf, PMD_ORDER);
  4877		return VM_FAULT_FALLBACK;
  4878	}
  4879	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki



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