MAX_STOP_REASON
unsigned char stop_reason[MAX_STOP_REASON]; /* stop reason */
memcpy(raw_super->s_stop_reason, sbi->stop_reason, MAX_STOP_REASON);
memcpy(sbi->stop_reason, raw_super->s_stop_reason, MAX_STOP_REASON);
__u8 s_stop_reason[MAX_STOP_REASON]; /* stop checkpoint reason */