There is static scan tool reports BootScriptSave.c:628:'mSmst' is explicitly dereferenced. The patch is to check (mSmst != NULL) before freeing SMRAM at BootScriptSave.c:628. Cc: Shumin Qiu <shumin.qiu@intel.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Shumin Qiu <shumin.qiu@intel.com>