vmalloc_to_page() was using pte_offset_map() (followed by pte_unmap()), but it's intended for userspace page tables: prefer pte_offset_kernel(). Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx> Reviewed-by: Lorenzo Stoakes <lstoakes@xxxxxxxxx> --- mm/vmalloc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 9683573f1225..741722d247d5 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -703,11 +703,10 @@ struct page *vmalloc_to_page(const void *vmalloc_addr) if (WARN_ON_ONCE(pmd_bad(*pmd))) return NULL; - ptep = pte_offset_map(pmd, addr); + ptep = pte_offset_kernel(pmd, addr); pte = *ptep; if (pte_present(pte)) page = pte_page(pte); - pte_unmap(ptep); return page; } -- 2.35.3
