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arm64/mm: add pud_user_exec() check in pud_user_accessible_page()

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commit 730a11f982e61aaef758ab552dfb7c30de79e99b upstream.

Add check for the executable case in pud_user_accessible_page() too
like what we did for pte and pmd.

Fixes: 42b2547137 ("arm64/mm: enable ARCH_SUPPORTS_PAGE_TABLE_CHECK")
Suggested-by: Will Deacon <will@kernel.org>
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Link: https://lore.kernel.org/r/20221122123137.429686-1-liushixin2@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Liu Shixin 2022-11-22 20:31:37 +08:00 committed by Greg Kroah-Hartman
parent 05458ee3ff
commit a006aaffd7
1 changed files with 2 additions and 2 deletions
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4
arch/arm64/include/asm/pgtable.h
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@ -682,7 +682,7 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
#define pud_leaf(pud) (pud_present(pud) && !pud_table(pud))
#define pud_valid(pud) pte_valid(pud_pte(pud))
#define pud_user(pud) pte_user(pud_pte(pud))
#define pud_user_exec(pud) pte_user_exec(pud_pte(pud))
static inline void set_pud(pud_t *pudp, pud_t pud)
{
@ -868,7 +868,7 @@ static inline bool pmd_user_accessible_page(pmd_t pmd)
static inline bool pud_user_accessible_page(pud_t pud)
{
return pud_leaf(pud) && pud_user(pud);
return pud_leaf(pud) && (pud_user(pud) || pud_user_exec(pud));
}
#endif