ClearMasks and OrMasks are not 8-byte aligned. But SetMem64 requires the input address is 8-byte aligned. If the input is not 8-byte aligned, assertion is hit. Use SetMem instead. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Eric Dong <eric.dong@intel.com>