diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index ee2d0a485fc3478fc5f93b5b85c6dad0431e8ea0..ef1179df05d90d3525db2b4240400cde9f05b914 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -156,7 +156,11 @@ static void update_mem_info(struct f2fs_sb_info *sbi)
 	if (si->base_mem)
 		goto get_cache;
 
-	si->base_mem = sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
+	/* build stat */
+	si->base_mem = sizeof(struct f2fs_stat_info);
+
+	/* build superblock */
+	si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
 	si->base_mem += 2 * sizeof(struct f2fs_inode_info);
 	si->base_mem += sizeof(*sbi->ckpt);
 	si->base_mem += sizeof(struct percpu_counter) * NR_COUNT_TYPE;