Hi,
     This patch fix a vma03 bug,the info below detail it:

     the offset which is parameter of mmap2() function doesn't align the
     page size,but,this parameter is allowed multiple of the page size
     as returned by sysconf(_SC_PAGE_SIZE),meanwhile offset * 4096 must be
     a multiple of the system page size,so modify the input parameter
     pgoff = (ULONG_MAX - 1)&(~((pgsz-1)>>12));

     Regards
     Chuang