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Liu Shixin 5e4fc577db mm/kmemleak: fix partially freeing unknown object warning 
delete_object_part() can be called by multiple callers in the same time. 
If an object is found and removed by a caller, and then another caller try
to find it too, it failed and return directly.  It still be recorded by
kmemleak even if it has already been freed to buddy.  With DEBUG on,
kmemleak will report the following warning,

 kmemleak: Partially freeing unknown object at 0xa1af86000 (size 4096)
 CPU: 0 PID: 742 Comm: test_huge Not tainted 6.6.0-rc3kmemleak+ #54
 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
 Call Trace:
  <TASK>
  dump_stack_lvl+0x37/0x50
  kmemleak_free_part_phys+0x50/0x60
  hugetlb_vmemmap_optimize+0x172/0x290
  ? __pfx_vmemmap_remap_pte+0x10/0x10
  __prep_new_hugetlb_folio+0xe/0x30
  prep_new_hugetlb_folio.isra.0+0xe/0x40
  alloc_fresh_hugetlb_folio+0xc3/0xd0
  alloc_surplus_hugetlb_folio.constprop.0+0x6e/0xd0
  hugetlb_acct_memory.part.0+0xe6/0x2a0
  hugetlb_reserve_pages+0x110/0x2c0
  hugetlbfs_file_mmap+0x11d/0x1b0
  mmap_region+0x248/0x9a0
  ? hugetlb_get_unmapped_area+0x15c/0x2d0
  do_mmap+0x38b/0x580
  vm_mmap_pgoff+0xe6/0x190
  ksys_mmap_pgoff+0x18a/0x1f0
  do_syscall_64+0x3f/0x90
  entry_SYSCALL_64_after_hwframe+0x6e/0xd8

Expand __create_object() and move __alloc_object() to the beginning.  Then
use kmemleak_lock to protect __find_and_remove_object() and
__link_object() as a whole, which can guarantee all objects are processed
sequentialally.

Link: https://lkml.kernel.org/r/20231018102952.3339837-8-liushixin2@huawei.com
Fixes: 53238a60dd4a ("kmemleak: Allow partial freeing of memory blocks")
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Patrick Wang <patrick.wang.shcn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-10-25 16:47:13 -07:00
..
damon
mm/damon/sysfs: avoid empty scheme tried regions for large apply interval
2023-10-18 14:34:19 -07:00
kasan
mm: delete checks for xor_unlock_is_negative_byte()
2023-10-18 14:34:17 -07:00
kfence
LoongArch changes for v6.6
2023-09-08 12:16:52 -07:00
kmsan
mm: kmsan: panic on failure to allocate early boot metadata
2023-10-25 16:47:10 -07:00
backing-dev.c
writeback: remove redundant checks for root memcg
2023-08-21 13:37:48 -07:00
balloon_compaction.c
…
bootmem_info.c
bootmem: use kmemleak_free_part_phys in put_page_bootmem
2023-10-25 16:47:13 -07:00
cma_debug.c
…
cma_sysfs.c
mm: cma: make kobj_type structure constant
2023-03-28 16:20:06 -07:00
cma.c
mm/cma: use nth_page() in place of direct struct page manipulation
2023-10-04 10:32:29 -07:00
cma.h
…
compaction.c
mm/compaction: factor out code to test if we should run compaction for target order
2023-10-04 10:32:19 -07:00
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
Add x86 shadow stack support
2023-08-31 12:20:12 -07:00
debug.c
mm: update validate_mm() to use vma iterator
2023-06-09 16:25:31 -07:00
dmapool_test.c
dmapool: add alloc/free performance test
2023-04-05 19:42:38 -07:00
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: drop the assumption that VM_SHARED always implies writable
2023-10-18 14:34:19 -07:00
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: make failure to pin an error if FOLL_NOWAIT not specified
2023-10-18 14:34:15 -07:00
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: huge_memory: use folio_xchg_last_cpupid() in __split_huge_page_tail()
2023-10-25 16:47:12 -07:00
hugetlb_cgroup.c
mm, hugetlb: remove HUGETLB_CGROUP_MIN_ORDER
2023-10-18 14:34:17 -07:00
hugetlb_vmemmap.c
hugetlb_vmemmap: use folio argument for hugetlb_vmemmap_* functions
2023-10-25 16:47:08 -07:00
hugetlb_vmemmap.h
hugetlb_vmemmap: use folio argument for hugetlb_vmemmap_* functions
2023-10-25 16:47:08 -07:00
hugetlb.c
hugetlb_vmemmap: use folio argument for hugetlb_vmemmap_* functions
2023-10-25 16:47:08 -07:00
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
mm: abstract VMA merge and extend into vma_merge_extend() helper
2023-10-18 14:34:18 -07:00
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: restrict the pcp batch scale factor to avoid too long latency
2023-10-25 16:47:10 -07:00
Kconfig.debug
mm: page_table_check: Make it dependent on EXCLUSIVE_SYSTEM_RAM
2023-05-29 16:14:28 +01:00
khugepaged.c
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
kmemleak.c
mm/kmemleak: fix partially freeing unknown object warning
2023-10-25 16:47:13 -07:00
ksm.c
mm/ksm: add pages_skipped metric
2023-10-16 15:44:39 -07:00
list_lru.c
…
maccess.c
mm: Fix copy_from_user_nofault().
2023-04-12 17:36:23 -07:00
madvise.c
mm: drop the assumption that VM_SHARED always implies writable
2023-10-18 14:34:19 -07:00
Makefile
mm: vmscan: move shrinker-related code into a separate file
2023-10-04 10:32:23 -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: introduce MEMBLOCK_RSRV_NOINIT flag
2023-10-04 10:32:30 -07:00
memcontrol.c
mm: kmem: reimplement get_obj_cgroup_from_current()
2023-10-25 16:47:11 -07:00
memfd.c
memfd: drop warning for missing exec-related flags
2023-10-04 10:32:22 -07:00
memory_hotplug.c
mm/memory_hotplug: use pfn math in place of direct struct page manipulation
2023-10-04 10:32:29 -07:00
memory-failure.c
mm: convert DAX lock/unlock page to lock/unlock folio
2023-10-04 10:32:20 -07:00
memory-tiers.c
dax, kmem: calculate abstract distance with general interface
2023-10-16 15:44:39 -07:00
memory.c
mm: use folio_xchg_last_cpupid() in wp_page_reuse()
2023-10-25 16:47:13 -07:00
mempolicy.c
mm: abstract the vma_merge()/split_vma() pattern for mprotect() et al.
2023-10-18 14:34:18 -07:00
mempool.c
…
memremap.c
mm/memremap.c: fix outdated comment in devm_memremap_pages
2023-02-09 16:51:46 -08:00
memtest.c
mm: memtest: convert to memtest_report_meminfo()
2023-08-21 13:37:47 -07:00
migrate_device.c
Add x86 shadow stack support
2023-08-31 12:20:12 -07:00
migrate.c
mm: migrate: use folio_xchg_last_cpupid() in folio_migrate_flags()
2023-10-25 16:47:12 -07:00
mincore.c
mm: enable page walking API to lock vmas during the walk
2023-08-21 13:07:20 -07:00
mlock.c
mm: abstract the vma_merge()/split_vma() pattern for mprotect() et al.
2023-10-18 14:34:18 -07:00
mm_init.c
mm: hugetlb: skip initialization of gigantic tail struct pages if freed by HVO
2023-10-04 10:32:30 -07:00
mm_slot.h
…
mmap_lock.c
…
mmap.c
mm: perform the mapping_map_writable() check after call_mmap()
2023-10-18 14:34:19 -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
mm: remove page_cpupid_xchg_last()
2023-10-25 16:47:13 -07:00
mprotect.c
mm: mprotect: use a folio in change_pte_range()
2023-10-25 16:47:12 -07:00
mremap.c
mm: abstract VMA merge and extend into vma_merge_extend() helper
2023-10-18 14:34:18 -07:00
msync.c
…
nommu.c
mm: make vma_merge() and split_vma() internal
2023-10-18 14:34:18 -07:00
oom_kill.c
mm/oom_killer: simplify OOM killer info dump helper
2023-10-25 16:47:10 -07:00
page_alloc.c
mm, pcp: reduce detecting time of consecutive high order page freeing
2023-10-25 16:47:11 -07:00
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
mm: page_idle: convert page idle to use a folio
2023-01-18 17:12:52 -08:00
page_io.c
mm: memcg: add THP swap out info for anonymous reclaim
2023-10-04 10:32:27 -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_owner: remove free_ts from page_owner output
2023-10-18 14:34:19 -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: redefine MAX_ORDER sanely
2023-04-05 19:42:46 -07:00
page_reporting.h
…
page_table_check.c
mm: convert page_table_check_pte_set() to page_table_check_ptes_set()
2023-08-24 16:20:18 -07:00
page_vma_mapped.c
mm: correct stale comment of function check_pte
2023-08-18 10:12:13 -07:00
page-writeback.c
mm: use folio_xor_flags_has_waiters() in folio_end_writeback()
2023-10-18 14:34:17 -07:00
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
percpu: scoped objcg protection
2023-10-25 16:47:11 -07:00
pgalloc-track.h
…
pgtable-generic.c
mm/pgtable: notes on pte_offset_map[_lock]()
2023-08-18 10:12:25 -07:00
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
filemap: Allow __filemap_get_folio to allocate large folios
2023-07-24 18:04:30 -04:00
rmap.c
mm/rmap: convert page_move_anon_rmap() to folio_move_anon_rmap()
2023-10-18 14:34:14 -07:00
rodata_test.c
…
secretmem.c
mm/secretmem: use a folio in secretmem_fault()
2023-08-21 13:38:02 -07:00
shmem_quota.c
shmem: Add default quota limit mount options
2023-08-09 09:15:40 +02:00
shmem.c
mm: update memfd seal write check to include F_SEAL_WRITE
2023-10-18 14:34:19 -07:00
show_mem.c
mm: refactor si_mem_available()
2023-10-04 10:32:19 -07:00
shrinker_debug.c
mm: shrinker: convert shrinker_rwsem to mutex
2023-10-04 10:32:26 -07:00
shrinker.c
mm: shrinker: convert shrinker_rwsem to mutex
2023-10-04 10:32:26 -07:00
shuffle.c
…
shuffle.h
mm, treewide: redefine MAX_ORDER sanely
2023-04-05 19:42:46 -07:00
slab_common.c
slab fixes for 6.6-rc4
2023-09-29 12:10:12 -07:00
slab.c
Randomized slab caches for kmalloc()
2023-07-18 10:07:47 +02:00
slab.h
mm: kmem: scoped objcg protection
2023-10-25 16:47:11 -07:00
slub.c
mm/slub: remove freelist_dereference()
2023-07-14 09:57:21 +02:00
sparse-vmemmap.c
mm/vmemmap: allow architectures to override how vmemmap optimization works
2023-08-18 10:12:53 -07:00
sparse.c
mm/sparse: remove redundant judgments from macro for_each_present_section_nr
2023-08-18 10:12:14 -07:00
swap_cgroup.c
…
swap_slots.c
…
swap_state.c
mm/swap: avoid a xa load for swapout path
2023-10-25 16:47:11 -07:00
swap.c
mm: remove references to pagevec
2023-06-23 16:59:30 -07:00
swap.h
swap: remove remnants of polling from read_swap_cache_async
2023-08-24 16:20:16 -07:00
swapfile.c
mm/swap: inline folio_set_swap_entry() and folio_swap_entry()
2023-08-24 16:20:28 -07:00
truncate.c
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
usercopy.c
mm: Fix copy_from_user_nofault().
2023-04-12 17:36:23 -07:00
userfaultfd.c
Add x86 shadow stack support
2023-08-31 12:20:12 -07:00
util.c
nilfs2: convert nilfs_copy_page() to nilfs_copy_folio()
2023-10-25 16:47:09 -07:00
vmalloc.c
mm: hugetlb: add huge page size param to set_huge_pte_at()
2023-09-29 17:20:47 -07:00
vmpressure.c
net-memcg: Fix scope of sockmem pressure indicators
2023-08-16 12:21:32 +01:00
vmscan.c
mm: multi-gen LRU: reuse some legacy trace events
2023-10-18 14:34:14 -07:00
vmstat.c
mm: tune PCP high automatically
2023-10-25 16:47:10 -07:00
workingset.c
mm: workingset: dynamically allocate the mm-shadow shrinker
2023-10-04 10:32:24 -07:00
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
zsmalloc: use copy_page for full page copy
2023-10-18 14:34:16 -07:00
zswap.c
mm: zswap: fix pool refcount bug around shrink_worker()
2023-10-18 12:12:40 -07:00