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Muchun Song 54df8e39ce mm: kfence: fix handling discontiguous page 
commit 1f2803b2660f4b04d48d065072c0ae0c9ca255fd upstream.

The struct pages could be discontiguous when the kfence pool is allocated
via alloc_contig_pages() with CONFIG_SPARSEMEM and
!CONFIG_SPARSEMEM_VMEMMAP.

This may result in setting PG_slab and memcg_data to a arbitrary
address (may be not used as a struct page), which in the worst case
might corrupt the kernel.

So the iteration should use nth_page().

Link: https://lkml.kernel.org/r/20230323025003.94447-1-songmuchun@bytedance.com
Fixes: 0ce20dd840 ("mm: add Kernel Electric-Fence infrastructure")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Marco Elver <elver@google.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: SeongJae Park <sjpark@amazon.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-04-13 16:55:30 +02:00
..
damon
mm/damon/paddr: fix missing folio_put()
2023-03-10 09:34:20 +01:00
kasan
kasan: fix Oops due to missing calls to kasan_arch_is_ready()
2023-02-22 12:59:46 +01:00
kfence
mm: kfence: fix handling discontiguous page
2023-04-13 16:55:30 +02:00
kmsan
kmsan: include linux/vmalloc.h
2023-01-04 11:28:59 +01:00
backing-dev.c
mm: backing-dev: Remove the unneeded result variable
2022-09-11 20:26:02 -07:00
balloon_compaction.c
…
bootmem_info.c
bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem
2022-08-28 14:02:45 -07:00
cma_debug.c
mm/cma_debug: show complete cma name in debugfs directories
2022-09-11 20:25:50 -07:00
cma_sysfs.c
…
cma.c
…
cma.h
…
compaction.c
Revert "mm/compaction: fix set skip in fast_find_migrateblock"
2023-02-01 08:34:49 +01:00
debug_page_ref.c
…
debug_vm_pgtable.c
…
debug.c
mm: remove the vma linked list
2022-09-26 19:46:26 -07:00
dmapool.c
…
early_ioremap.c
…
fadvise.c
…
failslab.c
mm: fix unexpected changes to {failslab|fail_page_alloc}.attr
2022-11-22 18:50:44 -08:00
filemap.c
mm/filemap: fix page end in filemap_get_read_batch
2023-02-22 12:59:49 +01:00
folio-compat.c
mm: remove try_to_free_swap()
2022-10-03 14:02:53 -07:00
frontswap.c
frontswap: don't call ->init if no ops are registered
2022-09-26 12:14:34 -07:00
gup_test.c
…
gup_test.h
…
gup.c
mm/gup: add folio to list when folio_isolate_lru() succeed
2023-02-22 12:59:54 +01:00
highmem.c
highmem: fix kmap_to_page() for kmap_local_page() addresses
2022-10-12 18:51:51 -07:00
hmm.c
mm/swap: add swp_offset_pfn() to fetch PFN from swap entry
2022-09-26 19:46:05 -07:00
huge_memory.c
mm/userfaultfd: propagate uffd-wp bit when PTE-mapping the huge zeropage
2023-03-22 13:34:03 +01:00
hugetlb_cgroup.c
hugetlb_cgroup: use helper for_each_hstate and hstate_index
2022-09-11 20:25:53 -07:00
hugetlb_vmemmap.c
mm: hugetlb_vmemmap: include missing linux/moduleparam.h
2022-11-08 15:57:23 -08:00
hugetlb_vmemmap.h
…
hugetlb.c
mm/hugetlb: pre-allocate pgtable pages for uffd wr-protects
2023-01-24 07:24:36 +01:00
hwpoison-inject.c
mm/hwpoison: add __init/__exit annotations to module init/exit funcs
2022-10-03 14:03:05 -07:00
init-mm.c
mm: remove rb tree.
2022-09-26 19:46:16 -07:00
internal.h
mm/page_alloc: make boot_nodestats static
2022-10-03 14:03:30 -07:00
interval_tree.c
…
io-mapping.c
…
ioremap.c
…
Kconfig
Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2022-10-10 17:53:04 -07:00
Kconfig.debug
…
khugepaged.c
mm/MADV_COLLAPSE: set EAGAIN on unexpected page refcount
2023-02-22 12:59:49 +01:00
kmemleak.c
mm/kmemleak: prevent soft lockup in kmemleak_scan()'s object iteration loops
2022-10-28 13:37:22 -07:00
ksm.c
mm/ksm: fix race with VMA iteration and mm_struct teardown
2023-03-30 12:49:29 +02:00
list_lru.c
…
maccess.c
maccess: Fix writing offset in case of fault in strncpy_from_kernel_nofault()
2022-11-11 11:44:46 -08:00
madvise.c
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
Makefile
mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol
2022-10-03 14:03:36 -07:00
mapping_dirty_helpers.c
…
memblock.c
Revert "mm: Always release pages to the buddy allocator in memblock_free_late()."
2023-02-22 12:59:50 +01:00
memcontrol.c
mm: memcontrol: deprecate charge moving
2023-03-10 09:34:26 +01:00
memfd.c
…
memory_hotplug.c
mm: add pageblock_aligned() macro
2022-10-03 14:03:04 -07:00
memory-failure.c
mm/hwpoison: convert TTU_IGNORE_HWPOISON to TTU_HWPOISON
2023-03-10 09:34:25 +01:00
memory-tiers.c
memory tier: release the new_memtier in find_create_memory_tier()
2023-03-10 09:34:27 +01:00
memory.c
mm/uffd: fix pte marker when fork() without fork event
2023-02-09 11:28:22 +01:00
mempolicy.c
migrate: hugetlb: check for hugetlb shared PMD in node migration
2023-02-09 11:28:23 +01:00
mempool.c
…
memremap.c
mm/memremap.c: map FS_DAX device memory as decrypted
2022-11-08 15:57:23 -08:00
memtest.c
…
migrate_device.c
mm/migrate_device: return number of migrating pages in args->cpages
2022-11-22 18:50:43 -08:00
migrate.c
mm/migrate: fix wrongly apply write bit after mkdirty on sparc64
2023-02-22 12:59:49 +01:00
mincore.c
mm: teach mincore_hugetlb about pte markers
2023-03-22 13:34:03 +01:00
mlock.c
mm/mlock: drop dead code in count_mm_mlocked_page_nr()
2022-09-26 19:46:27 -07:00
mm_init.c
mm: multi-gen LRU: groundwork
2022-09-26 19:46:09 -07:00
mm_slot.h
mm: introduce common struct mm_slot
2022-10-03 14:02:43 -07:00
mmap_lock.c
…
mmap.c
mm/userfaultfd: enable writenotify while userfaultfd-wp is enabled for a VMA
2023-01-24 07:24:36 +01:00
mmu_gather.c
mm/khugepaged: fix GUP-fast interaction by sending IPI
2022-11-30 14:49:42 -08:00
mmu_notifier.c
…
mmzone.c
mm: multi-gen LRU: groundwork
2022-09-26 19:46:09 -07:00
mprotect.c
mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in
2022-10-12 15:56:46 -07:00
mremap.c
mm, mremap: fix mremap() expanding for vma's with vm_ops->close()
2023-02-09 11:28:22 +01:00
msync.c
mm/msync: use vma_find() instead of vma linked list
2022-09-26 19:46:25 -07:00
nommu.c
nommu: fix split_vma() map_count error
2023-01-24 07:24:33 +01:00
oom_kill.c
mm: reduce noise in show_mem for lowmem allocations
2022-09-26 19:46:29 -07:00
page_alloc.c
Revert "kasan: drop skip_kasan_poison variable in free_pages_prepare"
2023-03-30 12:49:26 +02:00
page_counter.c
mm: page_counter: remove unneeded atomic ops for low/min
2022-09-11 20:26:01 -07:00
page_ext.c
mm/page_exit: fix kernel doc warning in page_ext_put()
2022-11-22 18:50:41 -08:00
page_idle.c
…
page_io.c
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
page_isolation.c
mm/page_isolation: fix clang deadcode warning
2022-10-28 13:37:22 -07:00
page_owner.c
mm: reuse pageblock_start/end_pfn() macro
2022-10-03 14:03:03 -07:00
page_poison.c
…
page_reporting.c
…
page_reporting.h
…
page_table_check.c
mm/page_table_check: fix typos
2022-10-03 14:03:27 -07:00
page_vma_mapped.c
mm/swap: add swp_offset_pfn() to fetch PFN from swap entry
2022-09-26 19:46:05 -07:00
page-writeback.c
mm: export balance_dirty_pages_ratelimited_flags()
2022-09-26 12:28:07 +02:00
pagewalk.c
Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2022-10-10 17:53:04 -07:00
percpu-internal.h
…
percpu-km.c
…
percpu-stats.c
…
percpu-vm.c
…
percpu.c
…
pgalloc-track.h
…
pgtable-generic.c
…
process_vm_access.c
use less confusing names for iov_iter direction initializers
2023-02-09 11:28:04 +01:00
ptdump.c
mm: pagewalk: Fix race between unmap and page walker
2022-09-03 10:13:13 -07:00
readahead.c
mm: add PSI accounting around ->read_folio and ->readahead calls
2022-09-20 08:24:38 -06:00
rmap.c
mm/hwpoison: convert TTU_IGNORE_HWPOISON to TTU_HWPOISON
2023-03-10 09:34:25 +01:00
rodata_test.c
mm/rodata_test: use PAGE_ALIGNED() helper
2022-10-03 14:03:05 -07:00
secretmem.c
mm/secretmem: remove reduntant return value
2022-10-03 14:03:36 -07:00
shmem.c
mm/shmem: restore SHMEM_HUGE_DENY precedence over MADV_COLLAPSE
2023-01-24 07:24:33 +01:00
shrinker_debug.c
mm: shrinkers: fix deadlock in shrinker debugfs
2023-02-22 12:59:46 +01:00
shuffle.c
mm/shuffle: convert module_param_call to module_param_cb
2022-10-03 14:03:07 -07:00
shuffle.h
…
slab_common.c
mm, slab: remove duplicate kernel-doc comment for ksize()
2022-11-07 17:11:27 +01:00
slab.c
mm/slab: Fix undefined init_cache_node_node() for NUMA and !SMP
2023-03-30 12:49:23 +02:00
slab.h
Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2022-10-10 17:53:04 -07:00
slob.c
Merge branch 'slab/for-6.1/kmalloc_size_roundup' into slab/for-next
2022-09-29 11:30:55 +02:00
slub.c
treewide: use prandom_u32_max() when possible, part 1
2022-10-11 17:42:55 -06:00
sparse-vmemmap.c
…
sparse.c
…
swap_cgroup.c
mm: memcontrol: don't allocate cgroup swap arrays when memcg is disabled
2022-10-03 14:03:36 -07:00
swap_slots.c
mm/swap: convert put_swap_page() to put_swap_folio()
2022-10-03 14:02:46 -07:00
swap_state.c
swap_state: convert free_swap_cache() to use a folio
2022-10-03 14:02:51 -07:00
swap.c
mm: add folio_add_lru_vma()
2022-10-03 14:02:45 -07:00
swap.h
mm: remove lookup_swap_cache()
2022-10-03 14:02:51 -07:00
swapfile.c
mm/swapfile: add cond_resched() in get_swap_pages()
2023-02-09 11:28:22 +01:00
truncate.c
mm: add split_folio()
2022-10-03 14:02:45 -07:00
usercopy.c
…
userfaultfd.c
mm/shmem: use page_mapping() to detect page cache for uffd continue
2022-11-08 15:57:23 -08:00
util.c
Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2022-10-10 17:53:04 -07:00
vmalloc.c
mm: kmsan: maintain KMSAN metadata for page operations
2022-10-03 14:03:20 -07:00
vmpressure.c
…
vmscan.c
mm: shrinkers: fix deadlock in shrinker debugfs
2023-02-22 12:59:46 +01:00
vmstat.c
Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2022-10-10 17:53:04 -07:00
workingset.c
mm: multi-gen LRU: minimal implementation
2022-09-26 19:46:09 -07:00
z3fold.c
…
zbud.c
…
zpool.c
…
zsmalloc.c
zsmalloc: zs_destroy_pool: add size_class NULL check
2022-10-20 21:27:21 -07:00
zswap.c
mm/swap: remove the end_write_func argument to __swap_writepage
2022-09-11 20:25:50 -07:00