From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 07CDE1F4C8B for ; Sat, 6 Sep 2025 02:01:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757124097; cv=none; b=jXLLTGCar3M+de2MS2JmZ7BpgiV3z2FCR1Hg/bzLyUCoEdPRqlY2zAFCd2EOT4yQH8JCICAN4NvKH4SR/7uuPS6Ikk6EOmpaD7dFqjFlpo3xJoRwasZoVU3f9p8GUTcYYX+IOKR+zgZlndltKdb/yZ+6pvbcgH+ft2b7TvL4ttA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757124097; c=relaxed/simple; bh=MuHDvRPoD3+HiJKdO5kFvlTm0Hsm3kFtAxig/Cxvyk0=; h=Date:To:From:Subject:Message-Id; b=TwhJkrW2guieRMLw8rxhjio3lNIUfGkmSd95AIBqKLw6DXE1P5jDu6mYv+DZBW+OtbYSyXZnGDZ8EBECFbMXkYlmjSPIzDEpIDgbQovas/DCanOH+T4qwUEn8x8SaWm6beO/tba17qlnnEx+BZaj9JpzJ1CVtcjssTZv9mHWDrk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=0M07DiSD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="0M07DiSD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 777A6C4CEF1; Sat, 6 Sep 2025 02:01:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1757124096; bh=MuHDvRPoD3+HiJKdO5kFvlTm0Hsm3kFtAxig/Cxvyk0=; h=Date:To:From:Subject:From; b=0M07DiSDDQPdSgAA/4k6C1ZMgMQzo/dIbD27g8QjwvW+waUc5/diRqJc/4pc0+3OA ZIJ4tJJvW9d0a67T7gLDI11SWWlSfAKEdihTYnEbBeMH6eAbJOQyfpGJt9MGzdMh2+ giBlVJi1n6GxbS6FAyVl7OzkJ72orV9/HwBUjCpo= Date: Fri, 05 Sep 2025 19:01:35 -0700 To: mm-commits@vger.kernel.org,axboe@kernel.dk,david@redhat.com,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-gup-remove-record_subpages-fix.patch added to mm-unstable branch Message-Id: <20250906020136.777A6C4CEF1@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: fixup: mm/gup: remove record_subpages() has been added to the -mm mm-unstable branch. Its filename is mm-gup-remove-record_subpages-fix.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-gup-remove-record_subpages-fix.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: David Hildenbrand Subject: fixup: mm/gup: remove record_subpages() Date: Fri, 5 Sep 2025 08:38:43 +0200 pages is not adjusted by the caller, but indexed by existing *nr. Link: https://lkml.kernel.org/r/cc7f03f8-da8b-407e-a03a-e8e5a9ec5462@redhat.com Signed-off-by: David Hildenbrand Reported-by: syzbot+1ab243d3eebb2aabf4a4@syzkaller.appspotmail.com Tested-by: syzbot+1ab243d3eebb2aabf4a4@syzkaller.appspotmail.com Reported-by: Jens Axboe Cc: David Hildenbrand Signed-off-by: Andrew Morton --- mm/gup.c | 2 ++ 1 file changed, 2 insertions(+) --- a/mm/gup.c~mm-gup-remove-record_subpages-fix +++ a/mm/gup.c @@ -2966,6 +2966,7 @@ static int gup_fast_pmd_leaf(pmd_t orig, return 0; } + pages += *nr; *nr += refs; for (; refs; refs--) *(pages++) = page++; @@ -3009,6 +3010,7 @@ static int gup_fast_pud_leaf(pud_t orig, return 0; } + pages += *nr; *nr += refs; for (; refs; refs--) *(pages++) = page++; _ Patches currently in -mm which might be from david@redhat.com are mm-migrate-remove-migratepage_unmap.patch mm-migrate-remove-migratepage_unmap-fix.patch treewide-remove-migratepage_success.patch mm-huge_memory-move-more-common-code-into-insert_pmd.patch mm-huge_memory-move-more-common-code-into-insert_pud.patch mm-huge_memory-support-huge-zero-folio-in-vmf_insert_folio_pmd.patch fs-dax-use-vmf_insert_folio_pmd-to-insert-the-huge-zero-folio.patch mm-huge_memory-mark-pmd-mappings-of-the-huge-zero-folio-special.patch powerpc-ptdump-rename-struct-pgtable_level-to-struct-ptdump_pglevel.patch mm-rmap-convert-enum-rmap_level-to-enum-pgtable_level.patch mm-memory-convert-print_bad_pte-to-print_bad_page_map.patch mm-memory-convert-print_bad_pte-to-print_bad_page_map-fix.patch mm-memory-factor-out-common-code-from-vm_normal_page_.patch mm-introduce-and-use-vm_normal_page_pud.patch mm-rename-vm_ops-find_special_page-to-vm_ops-find_normal_page.patch prctl-extend-pr_set_thp_disable-to-optionally-exclude-vm_hugepage.patch mm-huge_memory-convert-tva_flags-to-enum-tva_type.patch mm-huge_memory-respect-madv_collapse-with-pr_thp_disable_except_advised.patch mm-stop-making-sparsemem_vmemmap-user-selectable.patch arm64-kconfig-drop-superfluous-select-sparsemem_vmemmap.patch s390-kconfig-drop-superfluous-select-sparsemem_vmemmap.patch x86-kconfig-drop-superfluous-select-sparsemem_vmemmap.patch wireguard-selftests-remove-config_sparsemem_vmemmap=y-from-qemu-kernel-config.patch mm-page_alloc-reject-unreasonable-folio-compound-page-sizes-in-alloc_contig_range_noprof.patch mm-memremap-reject-unreasonable-folio-compound-page-sizes-in-memremap_pages.patch mm-hugetlb-check-for-unreasonable-folio-sizes-when-registering-hstate.patch mm-mm_init-make-memmap_init_compound-look-more-like-prep_compound_page.patch mm-sanity-check-maximum-folio-size-in-folio_set_order.patch mm-limit-folio-compound-page-sizes-in-problematic-kernel-configs.patch mm-simplify-folio_page-and-folio_page_idx.patch mm-hugetlb-cleanup-hugetlb_folio_init_tail_vmemmap.patch mm-mm-percpu-km-drop-nth_page-usage-within-single-allocation.patch fs-hugetlbfs-remove-nth_page-usage-within-folio-in-adjust_range_hwpoison.patch fs-hugetlbfs-cleanup-folio-in-adjust_range_hwpoison.patch mm-pagewalk-drop-nth_page-usage-within-folio-in-folio_walk_start.patch mm-gup-drop-nth_page-usage-within-folio-when-recording-subpages.patch mm-gup-remove-record_subpages.patch mm-gup-remove-record_subpages-fix.patch io_uring-zcrx-remove-nth_page-usage-within-folio.patch mips-mm-convert-__flush_dcache_pages-to-__flush_dcache_folio_pages.patch mm-cma-refuse-handing-out-non-contiguous-page-ranges.patch dma-remap-drop-nth_page-in-dma_common_contiguous_remap.patch scatterlist-disallow-non-contigous-page-ranges-in-a-single-sg-entry.patch ata-libata-sff-drop-nth_page-usage-within-sg-entry.patch drm-i915-gem-drop-nth_page-usage-within-sg-entry.patch mspro_block-drop-nth_page-usage-within-sg-entry.patch memstick-drop-nth_page-usage-within-sg-entry.patch mmc-drop-nth_page-usage-within-sg-entry.patch scsi-scsi_lib-drop-nth_page-usage-within-sg-entry.patch scsi-sg-drop-nth_page-usage-within-sg-entry.patch vfio-pci-drop-nth_page-usage-within-sg-entry.patch crypto-remove-nth_page-usage-within-sg-entry.patch mm-gup-drop-nth_page-usage-in-unpin_user_page_range_dirty_lock.patch kfence-drop-nth_page-usage.patch block-update-comment-of-struct-bio_vec-regarding-nth_page.patch mm-remove-nth_page.patch selftests-mm-split_huge_page_test-fix-occasional-is_backed_by_folio-wrong-results.patch selftests-mm-split_huge_page_test-cleanups-for-split_pte_mapped_thp-test.patch