Generic code must always use the architecture-provided helper function to write page tables. Fixes: 662df3e5c376 ("mm: madvise: implement lightweight guard page mechanism") Signed-off-by: Samuel Holland --- mm/madvise.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/madvise.c b/mm/madvise.c index b617b1be0f535..4da9c32f8738a 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -1114,7 +1114,7 @@ static int guard_install_set_pte(unsigned long addr, unsigned long next, unsigned long *nr_pages = (unsigned long *)walk->private; /* Simply install a PTE marker, this causes segfault on access. */ - *ptep = make_pte_marker(PTE_MARKER_GUARD); + set_pte(ptep, make_pte_marker(PTE_MARKER_GUARD)); (*nr_pages)++; return 0; -- 2.47.2