mm/validate: migrate all pages in bitmap

If the number of pages in the bitmap was not a multiple of 64, the
remainder would not be copied over to the new bitmap during
migration, which could lead to tracking validated pages as invalid.

Signed-off-by: Carlos López <carlos.lopez@suse.com>

src/mm/validate.rs

@@ -153,7 +153,10 @@ impl ValidBitmap {
     }
 
     fn migrate(&mut self, new_bitmap: *mut u64) {
-        let (count, _) = self.index(self.pend);
+        let (mut count, bit) = self.index(self.pend);
+        if bit != 0 {
+            count += 1;
+        }
 
         unsafe {
             ptr::copy_nonoverlapping(self.bitmap, new_bitmap, count as usize);