code: func (m *Mapping) Unsymbolizable() bool {
  	name := filepath.Base(m.File)
  	return strings.HasPrefix(name, "[") || strings.HasPrefix(name, "linux-vdso") || strings.HasPrefix(m.File, "/dev/dri/")
  }
docs: // Unsymbolizable returns true if a mapping points to a binary for which
  // locations can't be symbolized in principle, at least now. Examples are
  // "[vdso]", [vsyscall]" and some others, see the code.