This is a note to let you know that I've just added the patch titled
arm64/mm: add pud_user_exec() check in pud_user_accessible_page()
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-mm-add-pud_user_exec-check-in-pud_user_accessible_page.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 730a11f982e61aaef758ab552dfb7c30de79e99b Mon Sep 17 00:00:00 2001
From: Liu Shixin <liushixin2@xxxxxxxxxx>
Date: Tue, 22 Nov 2022 20:31:37 +0800
Subject: arm64/mm: add pud_user_exec() check in pud_user_accessible_page()
From: Liu Shixin <liushixin2@xxxxxxxxxx>
commit 730a11f982e61aaef758ab552dfb7c30de79e99b upstream.
Add check for the executable case in pud_user_accessible_page() too
like what we did for pte and pmd.
Fixes: 42b2547137f5 ("arm64/mm: enable ARCH_SUPPORTS_PAGE_TABLE_CHECK")
Suggested-by: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Liu Shixin <liushixin2@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221122123137.429686-1-liushixin2@xxxxxxxxxx
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/pgtable.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -682,7 +682,7 @@ static inline unsigned long pmd_page_vad
#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_p
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
Patches currently in stable-queue which might be from liushixin2@xxxxxxxxxx are
queue-6.1/arm64-mm-add-pud_user_exec-check-in-pud_user_accessible_page.patch
queue-6.1/arm64-mm-fix-incorrect-file_map_count-for-invalid-pmd.patch
