* [alexshi:mmunstable 31/41] mm/memory.c:448:17: error: incompatible pointer types initializing 'struct ptdesc *' with an expression of type 'pte_t *'
@ 2024-07-24 13:56 kernel test robot
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From: kernel test robot @ 2024-07-24 13:56 UTC (permalink / raw)
To: alexs; +Cc: oe-kbuild-all
tree: https://github.com/alexshi/linux.git mmunstable
head: 45de53e1a6ceb1ede64b54126f9ee514f50c4e4c
commit: a0b75c1c1fda3892f1c8e0946254a4cb1226e10a [31/41] mm/pgtable: fully use ptdesc in pte_alloc_one series functions
config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20240724/202407242121.X3GeosZX-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project ad154281230d83ee551e12d5be48bb956ef47ed3)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240724/202407242121.X3GeosZX-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407242121.X3GeosZX-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from mm/memory.c:44:
In file included from include/linux/mm.h:2221:
include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from mm/memory.c:45:
include/linux/mm_inline.h:47:41: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
47 | __mod_lruvec_state(lruvec, NR_LRU_BASE + lru, nr_pages);
| ~~~~~~~~~~~ ^ ~~~
include/linux/mm_inline.h:49:22: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
49 | NR_ZONE_LRU_BASE + lru, nr_pages);
| ~~~~~~~~~~~~~~~~ ^ ~~~
In file included from mm/memory.c:84:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from mm/memory.c:84:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from mm/memory.c:84:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> mm/memory.c:448:17: error: incompatible pointer types initializing 'struct ptdesc *' with an expression of type 'pte_t *' [-Werror,-Wincompatible-pointer-types]
448 | struct ptdesc *ptdesc = pte_alloc_one(mm);
| ^ ~~~~~~~~~~~~~~~~~
mm/memory.c:4650:35: error: controlling expression type 'pte_t *' not compatible with any generic association type
4650 | vmf->prealloc_pte = ptdesc_page(pte_alloc_one(vma->vm_mm));
| ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/s390/include/asm/pgalloc.h:140:28: note: expanded from macro 'pte_alloc_one'
140 | #define pte_alloc_one(mm) ((pte_t *)page_table_alloc(mm))
| ^
include/linux/mm_types.h:502:38: note: expanded from macro 'ptdesc_page'
502 | #define ptdesc_page(pt) (_Generic((pt), \
| ^~
mm/memory.c:5013:35: error: controlling expression type 'pte_t *' not compatible with any generic association type
5013 | vmf->prealloc_pte = ptdesc_page(pte_alloc_one(vmf->vma->vm_mm));
| ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/s390/include/asm/pgalloc.h:140:28: note: expanded from macro 'pte_alloc_one'
140 | #define pte_alloc_one(mm) ((pte_t *)page_table_alloc(mm))
| ^
include/linux/mm_types.h:502:38: note: expanded from macro 'ptdesc_page'
502 | #define ptdesc_page(pt) (_Generic((pt), \
| ^~
15 warnings and 3 errors generated.
vim +448 mm/memory.c
445
446 int __pte_alloc(struct mm_struct *mm, pmd_t *pmd)
447 {
> 448 struct ptdesc *ptdesc = pte_alloc_one(mm);
449 if (!ptdesc)
450 return -ENOMEM;
451
452 pmd_install(mm, pmd, (pgtable_t *)&ptdesc);
453 if (ptdesc)
454 pte_free(mm, ptdesc_page(ptdesc));
455 return 0;
456 }
457
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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