Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Alexandre Ghiti <> | Subject | [PATCH -fixes 2/2] riscv: Fix set_direct_map_default_noflush() to reset _PAGE_EXEC | Date | Wed, 13 Dec 2023 14:40:27 +0100 |
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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@rivosinc.com> --- 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 96cbda683936..01398fee5cf8 100644 --- a/arch/riscv/mm/pageattr.c +++ b/arch/riscv/mm/pageattr.c @@ -383,7 +383,7 @@ 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 -- 2.39.2
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