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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-23 13:16:03 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-23 13:16:03 +0200 |
| commit | df1aa5b0d1a69b93d1371063299e42dcc56cbe7b (patch) | |
| tree | 8e84f62c45a49099782d0a97f5568b9a43702272 /mm/hugetlb.c | |
| parent | ebbc1a4789c666846b9854ef845a37a64879e5f9 (diff) | |
| parent | ed30a4a51bb196781c8058073ea720133a65596f (diff) | |
Merge 6.9-rc5 into char-misc-next
We need the char/misc fixes in here as well to work off of.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 23ef240ba48a..31d00eee028f 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -7044,9 +7044,13 @@ long hugetlb_change_protection(struct vm_area_struct *vma, if (!pte_same(pte, newpte)) set_huge_pte_at(mm, address, ptep, newpte, psize); } else if (unlikely(is_pte_marker(pte))) { - /* No other markers apply for now. */ - WARN_ON_ONCE(!pte_marker_uffd_wp(pte)); - if (uffd_wp_resolve) + /* + * Do nothing on a poison marker; page is + * corrupted, permissons do not apply. Here + * pte_marker_uffd_wp()==true implies !poison + * because they're mutual exclusive. + */ + if (pte_marker_uffd_wp(pte) && uffd_wp_resolve) /* Safe to modify directly (non-present->none). */ huge_pte_clear(mm, address, ptep, psize); } else if (!huge_pte_none(pte)) { |