Zi Yan
ad6941b192
mm/cma: use nth_page() in place of direct struct page manipulation ...
commit 2e7cfe5cd5b6b0b98abf57a3074885979e187c1c upstream.
Patch series "Use nth_page() in place of direct struct page manipulation",
v3.
On SPARSEMEM without VMEMMAP, struct page is not guaranteed to be
contiguous, since each memory section's memmap might be allocated
independently. hugetlb pages can go beyond a memory section size, thus
direct struct page manipulation on hugetlb pages/subpages might give wrong
struct page. Kernel provides nth_page() to do the manipulation properly.
Use that whenever code can see hugetlb pages.
This patch (of 5):
When dealing with hugetlb pages, manipulating struct page pointers
directly can get to wrong struct page, since struct page is not guaranteed
to be contiguous on SPARSEMEM without VMEMMAP. Use nth_page() to handle
it properly.
Without the fix, page_kasan_tag_reset() could reset wrong page tags,
causing a wrong kasan result. No related bug is reported. The fix
comes from code inspection.
Link: https://lkml.kernel.org/r/20230913201248.452081-1-zi.yan@sent.com
Link: https://lkml.kernel.org/r/20230913201248.452081-2-zi.yan@sent.com
Fixes: 2813b9c029
2023-11-28 16:50:19 +00:00
panic: Consolidate open-coded panic_on_warn checks
2023-02-06 07:52:50 +01:00
mm: bdi: initialize bdi_min_ratio when bdi is unregistered
2021-12-14 14:49:00 +01:00
mm/cma: use nth_page() in place of direct struct page manipulation
2023-11-28 16:50:19 +00:00
mm, compaction: fix fast_isolate_around() to stay within boundaries
2023-01-18 11:41:44 +01:00
mm: allow a controlled amount of unfairness in the page lock
2023-08-30 16:27:26 +02:00
v4l2: don't fall back to follow_pfn() if pin_user_pages_fast() fails
2022-12-08 11:23:06 +01:00
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +02:00
mm/hugetlb: fix races when looking up a CONT-PTE/PMD size hugetlb page
2022-12-19 12:24:15 +01:00
mm/thp: check and bail out if page in deferred queue already
2023-03-11 16:44:05 +01:00
mm/hugetlb: fix races when looking up a CONT-PTE/PMD size hugetlb page
2022-12-19 12:24:15 +01:00
mm/khugepaged: fix collapse_pte_mapped_thp() to allow anon_vma
2023-01-24 07:18:01 +01:00
Revert "mm: kmemleak: take a full lowmem check in kmemleak_*_phys()"
2022-09-15 12:04:49 +02:00
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +02:00
mm: fix madivse_pageout mishandling on non-LRU page
2022-10-05 10:37:43 +02:00
Revert "mm: Always release pages to the buddy allocator in memblock_free_late()."
2023-02-22 12:50:39 +01:00
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +02:00
memfd: fix F_SEAL_WRITE after shmem huge page allocated
2022-03-08 19:07:49 +01:00
mm: hugetlb: fix missing cache flush in copy_huge_page_from_user()
2022-05-15 19:54:47 +02:00
mm/memory_hotplug: use "unsigned long" for PFN in zone_for_pfn_range()
2021-09-22 12:26:43 +02:00
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +02:00
mm/migrate_device.c: flush TLB while holding PTL
2022-10-05 10:37:43 +02:00
mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region()
2022-09-20 12:28:00 +02:00
mm/khugepaged: fix GUP-fast interaction by sending IPI
2022-12-14 11:30:42 +01:00
arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL
2022-05-15 19:54:46 +02:00
mm/mremap: hold the rmap lock in write mode when moving page table entries.
2022-08-25 11:17:20 +02:00
oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup
2022-04-27 13:50:48 +02:00
mm: make wait_on_page_writeback() wait for multiple pending writebacks
2023-06-28 10:18:42 +02:00
mm/page_alloc: fix potential deadlock on zonelist_update_seq seqlock
2023-05-17 11:36:05 +02:00
mm: fix unexpected zeroed page mapping with zram swap
2022-05-12 12:23:48 +02:00
mm: pagewalk: Fix race between unmap and page walker
2022-10-15 07:54:36 +02:00
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +02:00
vfs: fix readahead(2) on block devices
2023-11-20 10:30:08 +01:00
mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse
2022-09-05 10:27:46 +02:00
tmpfs: verify {g,u}id mount options correctly
2023-09-23 10:59:40 +02:00
mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag
2021-11-26 10:47:21 +01:00
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +02:00
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +02:00
mm/swap: fix swap_info_struct race between swapoff and get_swap_pages()
2023-04-20 12:07:35 +02:00
mm/usercopy: return 1 from hardened_usercopy __setup() handler
2022-04-15 14:18:30 +02:00
mm: userfaultfd: fix missing cache flush in mcopy_atomic_pte() and __mcopy_atomic()
2022-05-15 19:54:47 +02:00
random: move randomize_page() into mm where it belongs
2022-06-22 14:11:17 +02:00
mm,vmscan: fix divide by zero in get_scan_count
2021-09-22 12:26:37 +02:00
arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL
2022-05-15 19:54:46 +02:00
zsmalloc: fix races between asynchronous zspage free and page migration
2022-06-06 08:33:50 +02:00
ad6941b192