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authorDavid Hildenbrand <david@redhat.com>2025-06-17 16:35:32 +0200
committerAndrew Morton <akpm@linux-foundation.org>2025-06-25 15:55:03 -0700
commit4a5e85f4eb8fd18b1266342d100e4f0849544ca0 (patch)
treede291e492f82add43cade7f1734a241039c971b3 /scripts/lib/kdoc/kdoc_parser.py
parent78f4e737a53e1163ded2687a922fce138aee73f5 (diff)
fs/proc/task_mmu: fix PAGE_IS_PFNZERO detection for the huge zero folio
is_zero_pfn() does not work for the huge zero folio. Fix it by using is_huge_zero_pmd(). This can cause the PAGEMAP_SCAN ioctl against /proc/pid/pagemap to present pages as PAGE_IS_PRESENT rather than as PAGE_IS_PFNZERO. Found by code inspection. Link: https://lkml.kernel.org/r/20250617143532.2375383-1-david@redhat.com Fixes: 52526ca7fdb9 ("fs/proc/task_mmu: implement IOCTL to get and optionally clear info about PTEs") Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'scripts/lib/kdoc/kdoc_parser.py')
0 files changed, 0 insertions, 0 deletions