* [hnaz-mm:master 214/410] mm/madvise.c:632:36: error: implicit declaration of function 'is_swapin_error_entry'
@ 2022-04-30 4:00 kernel test robot
2022-05-09 7:04 ` Miaohe Lin
0 siblings, 1 reply; 3+ messages in thread
From: kernel test robot @ 2022-04-30 4:00 UTC (permalink / raw)
To: Miaohe Lin
Cc: kbuild-all, linux-kernel, Johannes Weiner, Naoya Horiguchi,
Andrew Morton, Linux Memory Management List
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: x86_64-rhel-8.3-func (https://download.01.org/0day-ci/archive/20220430/202204301111.d0R5xzHF-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
reproduce (this is a W=1 build):
# 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
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Note: the hnaz-mm/master HEAD bf4803abaa3e9d2fa207c0675a2d2abf0fd44f66 builds fine.
It only hurts bisectability.
All errors (new ones prefixed by >>):
mm/madvise.c: In function 'madvise_free_pte_range':
>> mm/madvise.c:632:36: error: implicit declaration of function 'is_swapin_error_entry' [-Werror=implicit-function-declaration]
632 | is_swapin_error_entry(entry)) {
| ^~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [hnaz-mm:master 214/410] mm/madvise.c:632:36: error: implicit declaration of function 'is_swapin_error_entry'
2022-04-30 4:00 [hnaz-mm:master 214/410] mm/madvise.c:632:36: error: implicit declaration of function 'is_swapin_error_entry' kernel test robot
@ 2022-05-09 7:04 ` Miaohe Lin
0 siblings, 0 replies; 3+ messages in thread
From: Miaohe Lin @ 2022-05-09 7:04 UTC (permalink / raw)
To: kernel test robot, Andrew Morton
Cc: kbuild-all, linux-kernel, Johannes Weiner, Naoya Horiguchi,
Linux Memory Management List
On 2022/4/30 12:00, kernel test robot wrote:
> 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: x86_64-rhel-8.3-func (https://download.01.org/0day-ci/archive/20220430/202204301111.d0R5xzHF-lkp@intel.com/config)
> compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
> reproduce (this is a W=1 build):
> # 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
> make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> Note: the hnaz-mm/master HEAD bf4803abaa3e9d2fa207c0675a2d2abf0fd44f66 builds fine.
> It only hurts bisectability.
>
> All errors (new ones prefixed by >>):
>
> mm/madvise.c: In function 'madvise_free_pte_range':
>>> mm/madvise.c:632:36: error: implicit declaration of function 'is_swapin_error_entry' [-Werror=implicit-function-declaration]
> 632 | is_swapin_error_entry(entry)) {
> | ^~~~~~~~~~~~~~~~~~~~~
> cc1: some warnings being treated as errors
Sorry for late respond. And finally I found the root cause. :) In the hnaz-mm tree, commit 2ca240bbfe
("mm/madvise: free hwpoison and swapin error entry in madvise_free_pte_range") is applied but prerequisite
commit 1a622c8b5123 ("mm/swapfile: unuse_pte can map random data if swap read fails") is left behind. They
belong to same series [1]. Please apply all the commit in that series to check if this build error still exists.
Thanks for your test!
[1]: https://lore.kernel.org/all/20220424091105.48374-2-linmiaohe@huawei.com/T/#m27886f137e1ff5c8bd4f74a8191a60d1df023c65
>
>
> 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
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [hnaz-mm:master 214/410] mm/madvise.c:632:36: error: implicit declaration of function 'is_swapin_error_entry'
@ 2022-05-09 7:04 ` Miaohe Lin
0 siblings, 0 replies; 3+ messages in thread
From: Miaohe Lin @ 2022-05-09 7:04 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 6841 bytes --]
On 2022/4/30 12:00, kernel test robot wrote:
> 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: x86_64-rhel-8.3-func (https://download.01.org/0day-ci/archive/20220430/202204301111.d0R5xzHF-lkp(a)intel.com/config)
> compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
> reproduce (this is a W=1 build):
> # 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
> make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> Note: the hnaz-mm/master HEAD bf4803abaa3e9d2fa207c0675a2d2abf0fd44f66 builds fine.
> It only hurts bisectability.
>
> All errors (new ones prefixed by >>):
>
> mm/madvise.c: In function 'madvise_free_pte_range':
>>> mm/madvise.c:632:36: error: implicit declaration of function 'is_swapin_error_entry' [-Werror=implicit-function-declaration]
> 632 | is_swapin_error_entry(entry)) {
> | ^~~~~~~~~~~~~~~~~~~~~
> cc1: some warnings being treated as errors
Sorry for late respond. And finally I found the root cause. :) In the hnaz-mm tree, commit 2ca240bbfe
("mm/madvise: free hwpoison and swapin error entry in madvise_free_pte_range") is applied but prerequisite
commit 1a622c8b5123 ("mm/swapfile: unuse_pte can map random data if swap read fails") is left behind. They
belong to same series [1]. Please apply all the commit in that series to check if this build error still exists.
Thanks for your test!
[1]: https://lore.kernel.org/all/20220424091105.48374-2-linmiaohe(a)huawei.com/T/#m27886f137e1ff5c8bd4f74a8191a60d1df023c65
>
>
> 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
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-05-09 7:25 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-04-30 4:00 [hnaz-mm:master 214/410] mm/madvise.c:632:36: error: implicit declaration of function 'is_swapin_error_entry' kernel test robot
2022-05-09 7:04 ` Miaohe Lin
2022-05-09 7:04 ` Miaohe Lin
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