zfs_ereport_start
if (!zfs_ereport_start(&ereport, &detector, subclass, spa, vd,
(void) zfs_ereport_start(&report->zcr_ereport, &report->zcr_detector,
if (!zfs_ereport_start(&ereport, &detector, FM_EREPORT_ZFS_CHECKSUM,