diff options
| author | Lorenzo Stoakes <lorenzo.stoakes@oracle.com> | 2025-11-27 17:45:17 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-11-29 10:41:10 -0800 |
| commit | 12f0cd393369d700c16b47bc33e4120dc8b2c608 (patch) | |
| tree | 432be8c0b1df07f366234a562d9a48bb326000ac | |
| parent | ce2bba89566bef9d4a0ff2122ee75739a72a92be (diff) | |
fs/proc/task_mmu.c: fix make_uffd_wp_huge_pte() huge pte handling
make_uffd_wp_huge_pte() should return after handling a huge_pte_none()
pte.
Link: https://lkml.kernel.org/r/66178124-ebdf-4e23-b8ca-ed3eb8030c81@lucifer.local
Fixes: 03bfbc3ad6e4 ("mm: remove is_hugetlb_entry_[migration, hwpoisoned]()")
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reported-by: Vlastimil Babka <vbabka@suse.cz>
Closes: https://lkml.kernel.org/r/dc483db3-be4d-45f7-8b40-a28f5d8f5738@suse.cz
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | fs/proc/task_mmu.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index d00ac179d973..81dfc26bfae8 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -2500,9 +2500,11 @@ static void make_uffd_wp_huge_pte(struct vm_area_struct *vma, const unsigned long psize = huge_page_size(hstate_vma(vma)); softleaf_t entry; - if (huge_pte_none(ptent)) + if (huge_pte_none(ptent)) { set_huge_pte_at(vma->vm_mm, addr, ptep, make_pte_marker(PTE_MARKER_UFFD_WP), psize); + return; + } entry = softleaf_from_pte(ptent); if (softleaf_is_hwpoison(entry) || softleaf_is_marker(entry)) |