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X-CSE-ConnectionGUID: 5Wy7DocVTKqJs+NLtEwyBA== X-CSE-MsgGUID: RCEkhX1YSrKFKV3zpLpAzQ== X-IronPort-AV: E=McAfee;i="6700,10204,11138"; a="18931633" X-IronPort-AV: E=Sophos;i="6.09,223,1716274800"; d="scan'208";a="18931633" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jul 2024 00:36:04 -0700 X-CSE-ConnectionGUID: TU2LB07ATHOlbT1MSNYLRw== X-CSE-MsgGUID: o37qLNp7SPu+CT6PVYV9sg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,223,1716274800"; d="scan'208";a="56179322" Received: from lkp-server01.sh.intel.com (HELO 68891e0c336b) ([10.239.97.150]) by orviesa003.jf.intel.com with ESMTP; 20 Jul 2024 00:36:02 -0700 Received: from kbuild by 68891e0c336b with local (Exim 4.96) (envelope-from ) id 1sV4dM-000iz8-11; Sat, 20 Jul 2024 07:36:00 +0000 Date: Sat, 20 Jul 2024 15:35:52 +0800 From: kernel test robot To: "Alex Shi (Tencent)" Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: [alexshi:mmunstable 38/38] mm/memory.c:4650:21: error: incompatible pointer types assigning to 'struct ptdesc *' from 'pte_t *' Message-ID: <202407201547.3RsdbScA-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://github.com/alexshi/linux.git mmunstable head: b17c1bbf65811ff797f57b7ddc4fdf4b86d86030 commit: b17c1bbf65811ff797f57b7ddc4fdf4b86d86030 [38/38] mm: convert vmf.prealloc_pte to struct ptdesc pointer config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20240720/202407201547.3RsdbScA-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/20240720/202407201547.3RsdbScA-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/202407201547.3RsdbScA-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:440:25: error: incompatible pointer types passing 'struct ptdesc *' to parameter of type 'pgtable_t' (aka 'pte_t *') [-Werror,-Wincompatible-pointer-types] 440 | pmd_populate(mm, pmd, *pte); | ^~~~ arch/s390/include/asm/pgalloc.h:129:27: note: passing argument to parameter 'pte' here 129 | pmd_t *pmd, pgtable_t pte) | ^ 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:4650:21: error: incompatible pointer types assigning to 'struct ptdesc *' from 'pte_t *' [-Werror,-Wincompatible-pointer-types] 4650 | vmf->prealloc_pte = pte_alloc_one(vma->vm_mm); | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ mm/memory.c:5013:21: error: incompatible pointer types assigning to 'struct ptdesc *' from 'pte_t *' [-Werror,-Wincompatible-pointer-types] 5013 | vmf->prealloc_pte = pte_alloc_one(vmf->vma->vm_mm); | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 15 warnings and 4 errors generated. vim +4650 mm/memory.c 4622 4623 /* 4624 * The mmap_lock must have been held on entry, and may have been 4625 * released depending on flags and vma->vm_ops->fault() return value. 4626 * See filemap_fault() and __lock_page_retry(). 4627 */ 4628 static vm_fault_t __do_fault(struct vm_fault *vmf) 4629 { 4630 struct vm_area_struct *vma = vmf->vma; 4631 struct folio *folio; 4632 vm_fault_t ret; 4633 4634 /* 4635 * Preallocate pte before we take page_lock because this might lead to 4636 * deadlocks for memcg reclaim which waits for pages under writeback: 4637 * lock_page(A) 4638 * SetPageWriteback(A) 4639 * unlock_page(A) 4640 * lock_page(B) 4641 * lock_page(B) 4642 * pte_alloc_one 4643 * shrink_folio_list 4644 * wait_on_page_writeback(A) 4645 * SetPageWriteback(B) 4646 * unlock_page(B) 4647 * # flush A, B to clear the writeback 4648 */ 4649 if (pmd_none(*vmf->pmd) && !vmf->prealloc_pte) { > 4650 vmf->prealloc_pte = pte_alloc_one(vma->vm_mm); 4651 if (!vmf->prealloc_pte) 4652 return VM_FAULT_OOM; 4653 } 4654 4655 ret = vma->vm_ops->fault(vmf); 4656 if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY | 4657 VM_FAULT_DONE_COW))) 4658 return ret; 4659 4660 folio = page_folio(vmf->page); 4661 if (unlikely(PageHWPoison(vmf->page))) { 4662 vm_fault_t poisonret = VM_FAULT_HWPOISON; 4663 if (ret & VM_FAULT_LOCKED) { 4664 if (page_mapped(vmf->page)) 4665 unmap_mapping_folio(folio); 4666 /* Retry if a clean folio was removed from the cache. */ 4667 if (mapping_evict_folio(folio->mapping, folio)) 4668 poisonret = VM_FAULT_NOPAGE; 4669 folio_unlock(folio); 4670 } 4671 folio_put(folio); 4672 vmf->page = NULL; 4673 return poisonret; 4674 } 4675 4676 if (unlikely(!(ret & VM_FAULT_LOCKED))) 4677 folio_lock(folio); 4678 else 4679 VM_BUG_ON_PAGE(!folio_test_locked(folio), vmf->page); 4680 4681 return ret; 4682 } 4683 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki