From f29f5e4d35a97d99e5a2feaf13bed6e974fd500f Mon Sep 17 00:00:00 2001
From: WangRunji <wangrunji0408@163.com>
Date: Thu, 18 Apr 2019 21:29:45 +0800
Subject: [PATCH] fix memory area alignment #41

---
 crate/memory/src/memory_set/mod.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/crate/memory/src/memory_set/mod.rs b/crate/memory/src/memory_set/mod.rs
index 77eddc1..94d8765 100644
--- a/crate/memory/src/memory_set/mod.rs
+++ b/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 {