Sumanth Korikkar 1ee0e14814 mm: fix accounting of memmap pages ... [ Upstream commit c3576889d8 ] For !CONFIG_SPARSEMEM_VMEMMAP, memmap page accounting is currently done upfront in sparse_buffer_init(). However, sparse_buffer_alloc() may return NULL in failure scenario. Also, memmap pages may be allocated either from the memblock allocator during early boot or from the buddy allocator. When removed via arch_remove_memory(), accounting of memmap pages must reflect the original allocation source. To ensure correctness: * Account memmap pages after successful allocation in sparse_init_nid() and section_activate(). * Account memmap pages in section_deactivate() based on allocation source. Link: https://lkml.kernel.org/r/20250807183545.1424509-1-sumanthk@linux.ibm.com Fixes: 15995a3524 ("mm: report per-page metadata information") Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Suggested-by: David Hildenbrand <david@redhat.com> Reviewed-by: Wei Yang <richard.weiyang@gmail.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-09-09 18:58:22 +02:00
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damon	mm/damon/ops-common: ignore migration request to invalid nodes	2025-08-28 16:31:03 +02:00
kasan	kunit: kasan_test: disable fortify string checker on kasan_strings() test	2025-09-09 18:58:22 +02:00
kfence
kmsan
backing-dev.c
balloon_compaction.c
bootmem_info.c
cma_debug.c
cma_sysfs.c
cma.c
cma.h
compaction.c
debug_page_alloc.c
debug_page_ref.c
debug_vm_pgtable.c	mm/debug_vm_pgtable: clear page table entries at destroy_args()	2025-08-28 16:31:05 +02:00
debug.c
dmapool_test.c
dmapool.c
early_ioremap.c
execmem.c
fadvise.c
fail_page_alloc.c
failslab.c
filemap.c	readahead: fix return value of page_cache_next_miss() when no hole is found	2025-08-28 16:30:58 +02:00
folio-compat.c
gup_test.c
gup_test.h
gup.c
highmem.c
hmm.c
huge_memory.c
hugetlb_cgroup.c
hugetlb_vmemmap.c
hugetlb_vmemmap.h
hugetlb.c
hwpoison-inject.c
init-mm.c
internal.h
interval_tree.c
io-mapping.c
ioremap.c
Kconfig
Kconfig.debug
khugepaged.c
kmemleak.c	mm: fix possible deadlock in kmemleak	2025-09-09 18:58:16 +02:00
ksm.c
list_lru.c
maccess.c
madvise.c
Makefile
mapping_dirty_helpers.c
memblock.c
memcontrol-v1.c
memcontrol-v1.h
memcontrol.c
memfd.c
memory_hotplug.c
memory-failure.c	mm/memory-failure: fix infinite UCE for VM_PFNMAP pfn	2025-08-28 16:31:05 +02:00
memory-tiers.c
memory.c
mempolicy.c
mempool.c
memremap.c
memtest.c
migrate_device.c
migrate.c
mincore.c
mlock.c
mm_init.c
mm_slot.h
mmap_lock.c
mmap.c
mmu_gather.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
mseal.c
msync.c
nommu.c
numa_emulation.c
numa_memblks.c
numa.c
oom_kill.c
page_alloc.c
page_counter.c
page_ext.c
page_idle.c
page_io.c
page_isolation.c
page_owner.c
page_poison.c
page_reporting.c
page_reporting.h
page_table_check.c
page_vma_mapped.c
page-writeback.c
pagewalk.c
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c
pgalloc-track.h
pgtable-generic.c
process_vm_access.c
ptdump.c	mm/ptdump: take the memory hotplug lock inside ptdump_walk_pgd()	2025-08-20 18:30:55 +02:00
readahead.c
rmap.c
rodata_test.c
secretmem.c
shmem_quota.c
shmem.c
show_mem.c
shrinker_debug.c
shrinker.c
shuffle.c
shuffle.h
slab_common.c
slab.h
slub.c	mm/slub: avoid accessing metadata when pointer is invalid in object_err()	2025-09-09 18:58:22 +02:00
sparse-vmemmap.c	mm: fix accounting of memmap pages	2025-09-09 18:58:22 +02:00
sparse.c	mm: fix accounting of memmap pages	2025-09-09 18:58:22 +02:00
swap_cgroup.c
swap_slots.c
swap_state.c
swap.c
swap.h
swapfile.c	mm: swap: fix potential buffer overflow in setup_clusters()	2025-08-15 12:14:14 +02:00
truncate.c
usercopy.c
userfaultfd.c	mm/userfaultfd: fix kmap_local LIFO ordering for CONFIG_HIGHPTE	2025-09-09 18:58:15 +02:00
util.c
vma_internal.h
vma.c
vma.h
vmalloc.c
vmpressure.c
vmscan.c
vmstat.c
workingset.c
z3fold.c
zbud.c
zpool.c
zsmalloc.c
zswap.c