arm64: pageattr: Correctly adjust unaligned start addresses

The start address needs to be actually updated after it
is detected to be unaligned. Adjust it and the end address
properly.

Reported-by: Zi Shen Lim <zlim.lnx@gmail.com>
Reviewed-by: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c
index 75e744e4cec5382d533f68a0c3d1943e7ac24971..bb0ea94c4ba1a563383f92f0f6f212c770b82d23 100644 (file)
--- a/arch/arm64/mm/pageattr.c
+++ b/arch/arm64/mm/pageattr.c
@@ -46,7 +46,8 @@ static int change_memory_common(unsigned long addr, int numpages,
        struct page_change_data data;
 
        if (!IS_ALIGNED(addr, PAGE_SIZE)) {
-               addr &= PAGE_MASK;
+               start &= PAGE_MASK;
+               end = start + size;
                WARN_ON_ONCE(1);
        }