fix memory area alignment #41

crate/memory/src/memory_set/mod.rs

@@ -56,7 +56,9 @@ impl MemoryArea {
     }
     /// Check the array is within the readable memory
     fn check_read_array<S>(&self, ptr: *const S, count: usize) -> bool {
-        ptr as usize >= self.start_addr && unsafe { ptr.add(count) as usize } <= self.end_addr
+        // page align
+        ptr as usize >= Page::of_addr(self.start_addr).start_address()
+            && unsafe { ptr.add(count) as usize } < Page::of_addr(self.end_addr + PAGE_SIZE - 1).start_address()
     }
     /// Check the array is within the writable memory
     fn check_write_array<S>(&self, ptr: *mut S, count: usize) -> bool {