James HoughtonandGreg Kroah-Hartman aff80fb99b mm: teach mincore_hugetlb about pte markers ...

commit 63cf584203 upstream.

By checking huge_pte_none(), we incorrectly classify PTE markers as
"present".  Instead, check huge_pte_none_mostly(), classifying PTE markers
the same as if the PTE were completely blank.

PTE markers, unlike other kinds of swap entries, don't reference any
physical page and don't indicate that a physical page was mapped
previously.  As such, treat them as non-present for the sake of mincore().

Link: https://lkml.kernel.org/r/20230302222404.175303-1-jthoughton@google.com
Fixes: 5c041f5d1f ("mm: teach core mm about pte markers")
Signed-off-by: James Houghton <jthoughton@google.com>
Acked-by: Peter Xu <peterx@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: James Houghton <jthoughton@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2023-03-22 13:34:03 +01:00

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damon

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kasan

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kfence

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kmsan

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backing-dev.c

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balloon_compaction.c

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bootmem_info.c

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cma_debug.c

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cma_sysfs.c

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cma.c

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cma.h

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compaction.c

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debug_page_ref.c

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debug_vm_pgtable.c

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debug.c

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dmapool.c

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early_ioremap.c

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fadvise.c

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failslab.c

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filemap.c

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folio-compat.c

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frontswap.c

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gup_test.c

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gup_test.h

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gup.c

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highmem.c

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hmm.c

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huge_memory.c

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hugetlb_cgroup.c

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hugetlb_vmemmap.c

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hugetlb_vmemmap.h

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hugetlb.c

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hwpoison-inject.c

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init-mm.c

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internal.h

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interval_tree.c

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io-mapping.c

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ioremap.c

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Kconfig

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Kconfig.debug

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khugepaged.c

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kmemleak.c

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ksm.c

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list_lru.c

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maccess.c

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madvise.c

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Makefile

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mapping_dirty_helpers.c

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memblock.c

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memcontrol.c

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memfd.c

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memory_hotplug.c

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memory-failure.c

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memory-tiers.c

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memory.c

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mempolicy.c

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mempool.c

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memremap.c

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memtest.c

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migrate_device.c

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migrate.c

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mincore.c

mm: teach mincore_hugetlb about pte markers

2023-03-22 13:34:03 +01:00

mlock.c

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mm_init.c

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mm_slot.h

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mmap_lock.c

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mmap.c

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mmu_gather.c

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mmu_notifier.c

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mmzone.c

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mprotect.c

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mremap.c

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msync.c

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nommu.c

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oom_kill.c

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page_alloc.c

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page_counter.c

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page_ext.c

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page_idle.c

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page_io.c

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page_isolation.c

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page_owner.c

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page_poison.c

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page_reporting.c

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page_reporting.h

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page_table_check.c

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page_vma_mapped.c

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page-writeback.c

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pagewalk.c

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percpu-internal.h

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percpu-km.c

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percpu-stats.c

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percpu-vm.c

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percpu.c

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pgalloc-track.h

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pgtable-generic.c

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process_vm_access.c

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ptdump.c

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readahead.c

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rmap.c

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rodata_test.c

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secretmem.c

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shmem.c

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shrinker_debug.c

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shuffle.c

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shuffle.h

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slab_common.c

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slab.c

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slab.h

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slob.c

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slub.c

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sparse-vmemmap.c

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sparse.c

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swap_cgroup.c

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swap_slots.c

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swap_state.c

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swap.c

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swap.h

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swapfile.c

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truncate.c

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usercopy.c

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userfaultfd.c

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util.c

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vmalloc.c

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vmpressure.c

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vmscan.c

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vmstat.c

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workingset.c

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z3fold.c

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zbud.c

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zpool.c

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zsmalloc.c

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zswap.c

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