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linux/mm
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Ma Wupeng 93df6da64b hwpoison, memory_hotplug: lock folio before unmap hwpoisoned folio 
commit af288a426c3e3552b62595c6138ec6371a17dbba upstream.

Commit b15c87263a ("hwpoison, memory_hotplug: allow hwpoisoned pages to
be offlined) add page poison checks in do_migrate_range in order to make
offline hwpoisoned page possible by introducing isolate_lru_page and
try_to_unmap for hwpoisoned page.  However folio lock must be held before
calling try_to_unmap.  Add it to fix this problem.

Warning will be produced if folio is not locked during unmap:

  ------------[ cut here ]------------
  kernel BUG at ./include/linux/swapops.h:400!
  Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
  Modules linked in:
  CPU: 4 UID: 0 PID: 411 Comm: bash Tainted: G        W          6.13.0-rc1-00016-g3c434c7ee82a-dirty #41
  Tainted: [W]=WARN
  Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015
  pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
  pc : try_to_unmap_one+0xb08/0xd3c
  lr : try_to_unmap_one+0x3dc/0xd3c
  Call trace:
   try_to_unmap_one+0xb08/0xd3c (P)
   try_to_unmap_one+0x3dc/0xd3c (L)
   rmap_walk_anon+0xdc/0x1f8
   rmap_walk+0x3c/0x58
   try_to_unmap+0x88/0x90
   unmap_poisoned_folio+0x30/0xa8
   do_migrate_range+0x4a0/0x568
   offline_pages+0x5a4/0x670
   memory_block_action+0x17c/0x374
   memory_subsys_offline+0x3c/0x78
   device_offline+0xa4/0xd0
   state_store+0x8c/0xf0
   dev_attr_store+0x18/0x2c
   sysfs_kf_write+0x44/0x54
   kernfs_fop_write_iter+0x118/0x1a8
   vfs_write+0x3a8/0x4bc
   ksys_write+0x6c/0xf8
   __arm64_sys_write+0x1c/0x28
   invoke_syscall+0x44/0x100
   el0_svc_common.constprop.0+0x40/0xe0
   do_el0_svc+0x1c/0x28
   el0_svc+0x30/0xd0
   el0t_64_sync_handler+0xc8/0xcc
   el0t_64_sync+0x198/0x19c
  Code: f9407be0 b5fff320 d4210000 17ffff97 (d4210000)
  ---[ end trace 0000000000000000 ]---

Link: https://lkml.kernel.org/r/20250217014329.3610326-4-mawupeng1@huawei.com
Fixes: b15c87263a ("hwpoison, memory_hotplug: allow hwpoisoned pages to be offlined")
Signed-off-by: Ma Wupeng <mawupeng1@huawei.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Xiangyu Chen <xiangyu.chen@windriver.com>
Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-22 14:12:25 +02:00
..
damon
mm/damon/vaddr: fix issue in damon_va_evenly_split_region()
2024-12-14 20:00:21 +01:00
kasan
kasan: make report_lock a raw spinlock
2024-12-14 19:59:57 +01:00
kfence
kfence: skip __GFP_THISNODE allocations on NUMA systems
2025-02-17 09:40:32 +01:00
kmsan
dma: kmsan: export kmsan_handle_dma() for modules
2025-03-13 12:58:27 +01:00
backing-dev.c
blk-wbt: Fix detection of dirty-throttled tasks
2024-02-23 09:25:16 +01:00
balloon_compaction.c
…
bootmem_info.c
…
cma_debug.c
…
cma_sysfs.c
…
cma.c
mm/cma: drop incorrect alignment check in cma_init_reserved_mem
2024-06-16 13:47:42 +02:00
cma.h
…
compaction.c
NFS: fix nfs_release_folio() to not deadlock via kcompactd writeback
2025-03-13 12:58:27 +01:00
debug_page_alloc.c
mm: page_alloc: split out DEBUG_PAGEALLOC
2023-06-09 16:25:23 -07:00
debug_page_ref.c
…
debug_vm_pgtable.c
mm/debug_vm_pgtable: drop RANDOM_ORVALUE trick
2024-08-19 06:04:31 +02:00
debug.c
mm: update validate_mm() to use vma iterator
2023-06-09 16:25:31 -07:00
dmapool_test.c
…
dmapool.c
dmapool: create/destroy cleanup
2023-06-09 16:25:17 -07:00
early_ioremap.c
mm/early_ioremap.c: improve the execution efficiency of early_ioremap_setup()
2023-06-09 16:25:56 -07:00
fadvise.c
mm: remove unnecessary pagevec includes
2023-06-23 16:59:31 -07:00
fail_page_alloc.c
mm: page_alloc: split out FAIL_PAGE_ALLOC
2023-06-09 16:25:23 -07:00
failslab.c
…
filemap.c
mm: fix filemap_get_folios_contig returning batches of identical folios
2025-04-25 10:45:48 +02:00
folio-compat.c
filemap: Add fgf_t typedef
2023-07-24 18:04:30 -04:00
gup_test.c
Merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes.
2023-06-23 16:58:19 -07:00
gup_test.h
…
gup.c
mm/gup: fix wrongly calculated returned value in fault_in_safe_writeable()
2025-04-25 10:45:48 +02:00
highmem.c
mm: ptep_get() conversion
2023-06-19 16:19:25 -07:00
hmm.c
mm: enable page walking API to lock vmas during the walk
2023-08-21 13:07:20 -07:00
huge_memory.c
mm/thp: fix deferred split unqueue naming and locking
2024-11-17 15:08:59 +01:00
hugetlb_cgroup.c
…
hugetlb_vmemmap.c
mm: hugetlb_vmemmap: fix a race between vmemmap pmd split
2023-08-18 10:12:14 -07:00
hugetlb_vmemmap.h
…
hugetlb.c
mm/hugetlb: move hugetlb_sysctl_init() to the __init section
2025-04-25 10:45:32 +02:00
hwpoison-inject.c
…
init-mm.c
mm: move dummy_vm_ops out of a header
2023-08-21 13:37:46 -07:00
internal.h
Rename .data.once to .data..once to fix resetting WARN*_ONCE
2024-12-09 10:32:59 +01:00
interval_tree.c
…
io-mapping.c
…
ioremap.c
mm: ioremap: remove unneeded ioremap_allowed and iounmap_allowed
2023-08-18 10:12:36 -07:00
Kconfig
mm: z3fold: deprecate CONFIG_Z3FOLD
2024-10-10 11:58:02 +02:00
Kconfig.debug
mm: page_table_check: Make it dependent on EXCLUSIVE_SYSTEM_RAM
2023-05-29 16:14:28 +01:00
khugepaged.c
mm: khugepaged: fix the arguments order in khugepaged_collapse_file trace point
2024-11-01 01:58:26 +01:00
kmemleak.c
mm: kmemleak: fix upper boundary check for physical address objects
2025-02-17 09:40:35 +01:00
ksm.c
mm/ksm: fix ksm_zero_pages accounting
2024-06-16 13:47:41 +02:00
list_lru.c
…
maccess.c
…
madvise.c
mm,madvise,hugetlb: check for 0-length range after end address adjustment
2025-02-27 04:10:52 -08:00
Makefile
Merge tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-08-29 14:25:26 -07:00
mapping_dirty_helpers.c
mm: fix clean_record_shared_mapping_range kernel-doc
2023-08-24 16:20:30 -07:00
memblock.c
memblock: Accept allocated memory before use in memblock_double_array()
2025-05-22 14:12:25 +02:00
memcontrol.c
memcg: fix soft lockup in the OOM process
2025-02-27 04:10:45 -08:00
memfd.c
revert "memfd: improve userspace warnings for missing exec-related flags".
2023-09-05 11:11:52 -07:00
memory_hotplug.c
hwpoison, memory_hotplug: lock folio before unmap hwpoisoned folio
2025-05-22 14:12:25 +02:00
memory-failure.c
mm/hwpoison: do not send SIGBUS to processes with recovered clean pages
2025-04-25 10:45:31 +02:00
memory-tiers.c
memory tier: use helper macro __ATTR_RW()
2023-08-18 10:12:38 -07:00
memory.c
mm: fix apply_to_existing_page_range()
2025-04-25 10:45:48 +02:00
mempolicy.c
mm/mempolicy: fix migrate_to_node() assuming there is at least one VMA in a MM
2024-12-14 20:00:18 +01:00
mempool.c
…
memremap.c
…
memtest.c
memtest: use {READ,WRITE}_ONCE in memory scanning
2024-04-03 15:28:33 +02:00
migrate_device.c
Merge tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2023-08-31 12:20:12 -07:00
migrate.c
mm/migrate: correct nr_failed in migrate_pages_sync()
2025-05-22 14:12:25 +02:00
mincore.c
mm: enable page walking API to lock vmas during the walk
2023-08-21 13:07:20 -07:00
mlock.c
merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes
2023-08-21 14:26:20 -07:00
mm_init.c
efi: disable mirror feature during crashkernel
2024-01-31 16:18:56 -08:00
mm_slot.h
…
mmap_lock.c
mm: mmap_lock: replace get_memcg_path_buf() with on-stack buffer
2024-08-03 08:54:12 +02:00
mmap.c
mm: split critical region in remap_file_pages() and invoke LSMs in between
2025-03-22 12:50:48 -07:00
mmu_gather.c
mm: fix kernel-doc warning from tlb_flush_rmaps()
2023-08-24 16:20:30 -07:00
mmu_notifier.c
mmu_notifiers: rename invalidate_range notifier
2023-08-18 10:12:41 -07:00
mmzone.c
…
mprotect.c
mm: refactor map_deny_write_exec()
2024-11-22 15:38:37 +01:00
mremap.c
mm/mremap: correctly handle partial mremap() of VMA starting at 0
2025-04-25 10:45:31 +02:00
msync.c
…
nommu.c
mm: add nommu variant of vm_insert_pages()
2025-03-22 12:50:44 -07:00
oom_kill.c
memcg: fix soft lockup in the OOM process
2025-02-27 04:10:45 -08:00
page_alloc.c
mm/page_alloc: fix race condition in unaccepted memory handling
2025-05-22 14:12:24 +02:00
page_counter.c
…
page_ext.c
mm/page_ext: move functions around for minor cleanups to page_ext
2023-08-18 10:12:31 -07:00
page_idle.c
…
page_io.c
zswap: make zswap_load() take a folio
2023-08-21 13:37:27 -07:00
page_isolation.c
mm/hugetlb: get rid of page_hstate()
2023-08-18 10:12:39 -07:00
page_owner.c
mm/page_ext: use page_ext_data helper in page_owner
2023-08-21 13:37:27 -07:00
page_poison.c
mm/page_poison: remove unused page_ext.h from page_poison
2023-08-21 13:37:30 -07:00
page_reporting.c
mm, treewide: introduce NR_PAGE_ORDERS
2024-05-02 16:32:41 +02:00
page_reporting.h
…
page_table_check.c
mm/page_table_check: support userfault wr-protect entries
2024-08-19 06:04:29 +02:00
page_vma_mapped.c
mm: make page_mapped_in_vma() hugetlb walk aware
2025-04-25 10:45:31 +02:00
page-writeback.c
Revert "mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again"
2024-07-11 12:49:16 +02:00
pagewalk.c
mm/pagewalk: fix bootstopping regression from extra pte_unmap()
2023-09-02 08:39:21 -07:00
percpu-internal.h
percpu-internal/pcpu_chunk: re-layout pcpu_chunk structure to reduce false sharing
2023-06-19 16:19:29 -07:00
percpu-km.c
…
percpu-stats.c
…
percpu-vm.c
…
percpu.c
mm: Introduce flush_cache_vmap_early()
2024-02-16 19:10:52 +01:00
pgalloc-track.h
…
pgtable-generic.c
mm: fix race between __split_huge_pmd_locked() and GUP-fast
2024-06-16 13:47:40 +02:00
process_vm_access.c
mm/gup: remove unused vmas parameter from pin_user_pages_remote()
2023-06-09 16:25:25 -07:00
ptdump.c
mm: ptdump should use ptep_get_lockless()
2023-06-19 16:19:24 -07:00
readahead.c
mm/readahead: fix large folio support in async readahead
2025-01-09 13:32:08 +01:00
rmap.c
mm/rmap: reject hugetlb folios in folio_make_device_exclusive()
2025-04-25 10:45:31 +02:00
rodata_test.c
…
secretmem.c
secretmem: disable memfd_secret() if arch cannot set direct map
2024-10-17 15:24:37 +02:00
shmem_quota.c
tmpfs: fix race on handling dquot rbtree
2024-04-03 15:28:54 +02:00
shmem.c
Revert "libfs: Add simple_offset_empty()"
2025-02-01 18:37:54 +01:00
show_mem.c
mm, treewide: introduce NR_PAGE_ORDERS
2024-05-02 16:32:41 +02:00
shrinker_debug.c
Revert "mm: shrinkers: make count and scan in shrinker debugfs lockless"
2023-06-19 13:19:34 -07:00
shuffle.c
…
shuffle.h
…
slab_common.c
mm: krealloc: Fix MTE false alarm in __do_krealloc
2024-11-17 15:08:58 +01:00
slab.c
Randomized slab caches for kmalloc()
2023-07-18 10:07:47 +02:00
slab.h
mm/slub: Avoid list corruption when removing a slab from the full list
2024-12-09 10:33:06 +01:00
slub.c
mm/slub: Avoid list corruption when removing a slab from the full list
2024-12-09 10:33:06 +01:00
sparse-vmemmap.c
mm/vmemmap: allow architectures to override how vmemmap optimization works
2023-08-18 10:12:53 -07:00
sparse.c
x86/kaslr: Expose and use the end of the physical memory address space
2024-09-12 11:11:25 +02:00
swap_cgroup.c
…
swap_slots.c
…
swap_state.c
mm/swap: inline folio_set_swap_entry() and folio_swap_entry()
2023-08-24 16:20:28 -07:00
swap.c
mm: page_alloc: move mlocked flag clearance into free_pages_prepare()
2024-12-14 19:59:51 +01:00
swap.h
mm/swap: fix race when skipping swapcache
2024-03-01 13:35:00 +01:00
swapfile.c
mm/swapfile: skip HugeTLB pages for unuse_vma
2024-10-22 15:46:21 +02:00
truncate.c
mm: Fix missing folio invalidation calls during truncation
2024-09-04 13:28:23 +02:00
usercopy.c
…
userfaultfd.c
userfaultfd: fix checks for huge PMDs
2024-09-12 11:11:27 +02:00
util.c
mm: only enforce minimum stack gap size if it's sensible
2024-10-04 16:30:02 +02:00
vmalloc.c
mm: don't skip arch_sync_kernel_mappings() in error paths
2025-03-13 12:58:28 +01:00
vmpressure.c
net-memcg: Fix scope of sockmem pressure indicators
2023-08-16 12:21:32 +01:00
vmscan.c
mm: add missing release barrier on PGDAT_RECLAIM_LOCKED unlock
2025-04-25 10:45:31 +02:00
vmstat.c
vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event
2024-12-09 10:33:05 +01:00
workingset.c
mm: ratelimit stat flush from workingset shrinker
2024-06-16 13:47:31 +02:00
z3fold.c
mm/z3fold: remove obsolete comment for struct z3fold_pool
2023-08-21 13:37:51 -07:00
zbud.c
mm: zswap: remove shrink from zpool interface
2023-06-19 16:19:27 -07:00
zpool.c
mm: zswap: remove shrink from zpool interface
2023-06-19 16:19:27 -07:00
zsmalloc.c
merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes
2023-08-21 14:26:20 -07:00
zswap.c
mm: zswap: fix missing folio cleanup in writeback race path
2024-03-01 13:35:10 +01:00