DF-1918 fix check (mrsas_ioctl.c:323-324 patched predicate):
  sense_off=0x00000080 -> accepted (in-bounds)
  sense_off=0x000003f8 -> accepted (in-bounds)
  sense_off=0x000003f9 -> REJECTED (EINVAL) -- would have OOB-written
  sense_off=0x00000400 -> REJECTED (EINVAL) -- would have OOB-written
  sense_off=0x00001400 -> REJECTED (EINVAL) -- would have OOB-written
  sense_off=0xfffffff8 -> REJECTED (EINVAL) -- would have OOB-written
  4/6 vectors rejected by the fix predicate.