6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>
[ Upstream commit b8b2711336f03ece539de61479d6ffc44fb603d3 ]
When resetting the linear mapping permissions, we must make sure that we
clear the X bit so that do not end up with WX mappings (since we set
PAGE_KERNEL).
Fixes: 395a21ff859c ("riscv: add ARCH_HAS_SET_DIRECT_MAP support")
Signed-off-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231213134027.155327-3-alexghiti@xxxxxxxxxxxx
Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/riscv/mm/pageattr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/mm/pageattr.c b/arch/riscv/mm/pageattr.c
index fc5fc4f785c4..e703a9b59fc3 100644
--- a/arch/riscv/mm/pageattr.c
+++ b/arch/riscv/mm/pageattr.c
@@ -378,7 +378,7 @@ int set_direct_map_invalid_noflush(struct page *page)
int set_direct_map_default_noflush(struct page *page)
{
return __set_memory((unsigned long)page_address(page), 1,
- PAGE_KERNEL, __pgprot(0));
+ PAGE_KERNEL, __pgprot(_PAGE_EXEC));
}
#ifdef CONFIG_DEBUG_PAGEALLOC
--
2.43.0
