From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3FEF6EA6 for ; Thu, 28 Apr 2022 06:55:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1651128914; x=1682664914; h=date:from:to:cc:subject:message-id:mime-version; bh=GkXzFjSl4GwWQShXem59TPCXJDcVdFutR1uAC1+s/7w=; b=b28dpmDhh9sjZB1WklqhZG63ZiWem1pDInVwedmdHAKhF581mX1rH5yN tnJoyjwU9gxHaeAZelfEYWErYWceC554MHPYOas3/soyS0DNSoW84ffot bgtIXDozETFO/hqTuga/VxvUbaiCEDJ6S0t4JdmnS4MY7hmRgZ2soKseS cngjAPcDOWAlfTb+40GR+Lt26rM/47JW5E3t22qSphRDSJP4vFWKvLvL4 OG2mKcC3/mRdJsp4iaVEElijBaObUbIvHdfhaVlGVdeQt3L4/xY4M1GYj 0EFwfyYY0c8OftSOk5d0x2XTp/uO2Ad7ysmNC5aoR0O2cH6WrT2k7Q4ZU Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10330"; a="291340398" X-IronPort-AV: E=Sophos;i="5.90,295,1643702400"; d="scan'208";a="291340398" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Apr 2022 23:55:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,295,1643702400"; d="scan'208";a="731247367" Received: from lkp-server01.sh.intel.com (HELO 5056e131ad90) ([10.239.97.150]) by orsmga005.jf.intel.com with ESMTP; 27 Apr 2022 23:55:11 -0700 Received: from kbuild by 5056e131ad90 with local (Exim 4.95) (envelope-from ) id 1njy3S-00058w-NF; Thu, 28 Apr 2022 06:55:10 +0000 Date: Thu, 28 Apr 2022 14:54:32 +0800 From: kernel test robot To: Miaohe Lin Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Johannes Weiner , Naoya Horiguchi , Andrew Morton , Linux Memory Management List Subject: [hnaz-mm:master 214/410] mm/madvise.c:632:8: error: call to undeclared function 'is_swapin_error_entry'; ISO C99 and later do not support implicit function declarations Message-ID: <202204281452.cEOGcf4p-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/hnaz/linux-mm master head: bf4803abaa3e9d2fa207c0675a2d2abf0fd44f66 commit: fe343091405131f91dcb9230ae7649bb1ee7fe9a [214/410] mm/madvise: free hwpoison and swapin error entry in madvise_free_pte_range config: i386-randconfig-a005-20220425 (https://download.01.org/0day-ci/archive/20220428/202204281452.cEOGcf4p-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcfdc3c683b393df1a5c9063252eb60e52818) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/hnaz/linux-mm/commit/fe343091405131f91dcb9230ae7649bb1ee7fe9a git remote add hnaz-mm https://github.com/hnaz/linux-mm git fetch --no-tags hnaz-mm master git checkout fe343091405131f91dcb9230ae7649bb1ee7fe9a # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot Note: the hnaz-mm/master HEAD bf4803abaa3e9d2fa207c0675a2d2abf0fd44f66 builds fine. It only hurts bisectability. All errors (new ones prefixed by >>): >> mm/madvise.c:632:8: error: call to undeclared function 'is_swapin_error_entry'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] is_swapin_error_entry(entry)) { ^ 1 error generated. vim +/is_swapin_error_entry +632 mm/madvise.c 587 588 static int madvise_free_pte_range(pmd_t *pmd, unsigned long addr, 589 unsigned long end, struct mm_walk *walk) 590 591 { 592 struct mmu_gather *tlb = walk->private; 593 struct mm_struct *mm = tlb->mm; 594 struct vm_area_struct *vma = walk->vma; 595 spinlock_t *ptl; 596 pte_t *orig_pte, *pte, ptent; 597 struct page *page; 598 int nr_swap = 0; 599 unsigned long next; 600 601 next = pmd_addr_end(addr, end); 602 if (pmd_trans_huge(*pmd)) 603 if (madvise_free_huge_pmd(tlb, vma, pmd, addr, next)) 604 goto next; 605 606 if (pmd_trans_unstable(pmd)) 607 return 0; 608 609 tlb_change_page_size(tlb, PAGE_SIZE); 610 orig_pte = pte = pte_offset_map_lock(mm, pmd, addr, &ptl); 611 flush_tlb_batched_pending(mm); 612 arch_enter_lazy_mmu_mode(); 613 for (; addr != end; pte++, addr += PAGE_SIZE) { 614 ptent = *pte; 615 616 if (pte_none(ptent)) 617 continue; 618 /* 619 * If the pte has swp_entry, just clear page table to 620 * prevent swap-in which is more expensive rather than 621 * (page allocation + zeroing). 622 */ 623 if (!pte_present(ptent)) { 624 swp_entry_t entry; 625 626 entry = pte_to_swp_entry(ptent); 627 if (!non_swap_entry(entry)) { 628 nr_swap--; 629 free_swap_and_cache(entry); 630 pte_clear_not_present_full(mm, addr, pte, tlb->fullmm); 631 } else if (is_hwpoison_entry(entry) || > 632 is_swapin_error_entry(entry)) { 633 pte_clear_not_present_full(mm, addr, pte, tlb->fullmm); 634 } 635 continue; 636 } 637 638 page = vm_normal_page(vma, addr, ptent); 639 if (!page) 640 continue; 641 642 /* 643 * If pmd isn't transhuge but the page is THP and 644 * is owned by only this process, split it and 645 * deactivate all pages. 646 */ 647 if (PageTransCompound(page)) { 648 if (page_mapcount(page) != 1) 649 goto out; 650 get_page(page); 651 if (!trylock_page(page)) { 652 put_page(page); 653 goto out; 654 } 655 pte_unmap_unlock(orig_pte, ptl); 656 if (split_huge_page(page)) { 657 unlock_page(page); 658 put_page(page); 659 orig_pte = pte_offset_map_lock(mm, pmd, addr, &ptl); 660 goto out; 661 } 662 unlock_page(page); 663 put_page(page); 664 orig_pte = pte = pte_offset_map_lock(mm, pmd, addr, &ptl); 665 pte--; 666 addr -= PAGE_SIZE; 667 continue; 668 } 669 670 VM_BUG_ON_PAGE(PageTransCompound(page), page); 671 672 if (PageSwapCache(page) || PageDirty(page)) { 673 if (!trylock_page(page)) 674 continue; 675 /* 676 * If page is shared with others, we couldn't clear 677 * PG_dirty of the page. 678 */ 679 if (page_mapcount(page) != 1) { 680 unlock_page(page); 681 continue; 682 } 683 684 if (PageSwapCache(page) && !try_to_free_swap(page)) { 685 unlock_page(page); 686 continue; 687 } 688 689 ClearPageDirty(page); 690 unlock_page(page); 691 } 692 693 if (pte_young(ptent) || pte_dirty(ptent)) { 694 /* 695 * Some of architecture(ex, PPC) don't update TLB 696 * with set_pte_at and tlb_remove_tlb_entry so for 697 * the portability, remap the pte with old|clean 698 * after pte clearing. 699 */ 700 ptent = ptep_get_and_clear_full(mm, addr, pte, 701 tlb->fullmm); 702 703 ptent = pte_mkold(ptent); 704 ptent = pte_mkclean(ptent); 705 set_pte_at(mm, addr, pte, ptent); 706 tlb_remove_tlb_entry(tlb, pte, addr); 707 } 708 mark_page_lazyfree(page); 709 } 710 out: 711 if (nr_swap) { 712 if (current->mm == mm) 713 sync_mm_rss(mm); 714 715 add_mm_counter(mm, MM_SWAPENTS, nr_swap); 716 } 717 arch_leave_lazy_mmu_mode(); 718 pte_unmap_unlock(orig_pte, ptl); 719 cond_resched(); 720 next: 721 return 0; 722 } 723 -- 0-DAY CI Kernel Test Service https://01.org/lkp