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charset=us-ascii Content-Disposition: inline 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 | 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