diff --git a/sys/cam/ata/ata_da.c b/sys/cam/ata/ata_da.c
--- a/sys/cam/ata/ata_da.c
+++ b/sys/cam/ata/ata_da.c
@@ -1327,6 +1327,7 @@
 	case AC_GETDEV_CHANGED:
 	{
 		softc = (struct ada_softc *)periph->softc;
+		memset(&cgd, 0, sizeof(cgd));
 		xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 		cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 		xpt_action((union ccb *)&cgd);
@@ -1362,6 +1363,7 @@
 		cam_periph_async(periph, code, path, arg);
 		if (softc->state != ADA_STATE_NORMAL)
 			break;
+		memset(&cgd, 0, sizeof(cgd));
 		xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 		cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 		xpt_action((union ccb *)&cgd);
diff --git a/sys/cam/ata/ata_xpt.c b/sys/cam/ata/ata_xpt.c
--- a/sys/cam/ata/ata_xpt.c
+++ b/sys/cam/ata/ata_xpt.c
@@ -726,6 +726,7 @@
 {
 	struct ccb_trans_settings cts;
 
+	bzero(&cts, sizeof(cts));
 	xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
 	cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 	cts.type = CTS_TYPE_USER_SETTINGS;
@@ -1693,6 +1694,7 @@
 	    ata_version(ident_buf->version_major) : cpi.transport_version;
 
 	/* Tell the controller what we think */
+	bzero(&cts, sizeof(cts));
 	xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 	cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
 	cts.type = CTS_TYPE_CURRENT_SETTINGS;
@@ -2125,6 +2127,7 @@
 	struct ccb_trans_settings cts;
 	u_int speed, mb;
 
+	bzero(&cts, sizeof(cts));
 	_ata_announce_periph(periph, &cts, &speed);
 	if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
 		return;
diff --git a/sys/cam/mmc/mmc_da.c b/sys/cam/mmc/mmc_da.c
--- a/sys/cam/mmc/mmc_da.c
+++ b/sys/cam/mmc/mmc_da.c
@@ -712,6 +712,7 @@
 	{
 		CAM_DEBUG(path, CAM_DEBUG_TRACE, ("=> AC_GETDEV_CHANGED\n"));
 		softc = (struct sdda_softc *)periph->softc;
+		memset(&cgd, 0, sizeof(cgd));
 		xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 		cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 		xpt_action((union ccb *)&cgd);
diff --git a/sys/cam/mmc/mmc_xpt.c b/sys/cam/mmc/mmc_xpt.c
--- a/sys/cam/mmc/mmc_xpt.c
+++ b/sys/cam/mmc/mmc_xpt.c
@@ -375,6 +375,7 @@
 
 	CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("mmc_announce_periph"));
 
+	memset(&cts, 0, sizeof(cts));
 	xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NORMAL);
 	cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 	cts.type = CTS_TYPE_CURRENT_SETTINGS;
diff --git a/sys/cam/nvme/nvme_xpt.c b/sys/cam/nvme/nvme_xpt.c
--- a/sys/cam/nvme/nvme_xpt.c
+++ b/sys/cam/nvme/nvme_xpt.c
@@ -634,6 +634,7 @@
 	path->device->protocol_version = cpi.protocol_version;
 
 	/* Tell the controller what we think */
+	memset(&cts, 0, sizeof(cts));
 	xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 	cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
 	cts.type = CTS_TYPE_CURRENT_SETTINGS;
@@ -792,6 +793,7 @@
 	cam_periph_assert(periph, MA_OWNED);
 
 	/* Ask the SIM for connection details */
+	memset(&cts, 0, sizeof(cts));
 	xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NORMAL);
 	cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 	cts.type = CTS_TYPE_CURRENT_SETTINGS;
diff --git a/sys/cam/scsi/scsi_cd.c b/sys/cam/scsi/scsi_cd.c
--- a/sys/cam/scsi/scsi_cd.c
+++ b/sys/cam/scsi/scsi_cd.c
@@ -1259,6 +1259,7 @@
 
 				status = done_ccb->ccb_h.status;
 
+				bzero(&cgd, sizeof(cgd));
 				xpt_setup_ccb(&cgd.ccb_h,
 					      done_ccb->ccb_h.path,
 					      CAM_PRIORITY_NORMAL);
diff --git a/sys/cam/scsi/scsi_enc_ses.c b/sys/cam/scsi/scsi_enc_ses.c
--- a/sys/cam/scsi/scsi_enc_ses.c
+++ b/sys/cam/scsi/scsi_enc_ses.c
@@ -974,6 +974,7 @@
 			     != CAM_REQ_CMP)
 				return;
 
+			memset(&cgd, 0, sizeof(cgd));
 			xpt_setup_ccb(&cgd.ccb_h, path, CAM_PRIORITY_NORMAL);
 			cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 			xpt_action((union ccb *)&cgd);
@@ -1035,6 +1036,7 @@
 	args = (ses_setphyspath_callback_args_t *)arg;
 	old_physpath = malloc(MAXPATHLEN, M_SCSIENC, M_WAITOK|M_ZERO);
 	xpt_path_lock(path);
+	memset(&cdai, 0, sizeof(cdai));
 	xpt_setup_ccb(&cdai.ccb_h, path, CAM_PRIORITY_NORMAL);
 	cdai.ccb_h.func_code = XPT_DEV_ADVINFO;
 	cdai.buftype = CDAI_TYPE_PHYS_PATH;
@@ -1095,6 +1097,7 @@
 	 * Assemble the components of the physical path starting with
 	 * the device ID of the enclosure itself.
 	 */
+	memset(&cdai, 0, sizeof(cdai));
 	xpt_setup_ccb(&cdai.ccb_h, enc->periph->path, CAM_PRIORITY_NORMAL);
 	cdai.ccb_h.func_code = XPT_DEV_ADVINFO;
 	cdai.flags = CDAI_FLAG_NONE;
diff --git a/sys/cam/scsi/scsi_sa.c b/sys/cam/scsi/scsi_sa.c
--- a/sys/cam/scsi/scsi_sa.c
+++ b/sys/cam/scsi/scsi_sa.c
@@ -2403,6 +2403,7 @@
 
 		bzero(&ext_inq, sizeof(ext_inq));
 
+		memset(&cdai, 0, sizeof(cdai));
 		xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 
 		cdai.ccb_h.func_code = XPT_DEV_ADVINFO;
@@ -4416,6 +4417,7 @@
 	SASBADDVARSTR(sb, indent, periph->periph_name, %s, periph_name,
 	    strlen(periph->periph_name) + 1);
 	SASBADDUINT(sb, indent, periph->unit_number, %u, unit_number);
+	memset(&cgd, 0, sizeof(cgd));
 	xpt_setup_ccb(&cgd.ccb_h,
 		      periph->path,
 		      CAM_PRIORITY_NORMAL);
diff --git a/sys/cam/scsi/scsi_xpt.c b/sys/cam/scsi/scsi_xpt.c
--- a/sys/cam/scsi/scsi_xpt.c
+++ b/sys/cam/scsi/scsi_xpt.c
@@ -2737,6 +2737,7 @@
 
 	inq_data = &device->inq_data;
 	scsi = &cts->proto_specific.scsi;
+	memset(&cpi, 0, sizeof(cpi));
 	xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
 	cpi.ccb_h.func_code = XPT_PATH_INQ;
 	xpt_action((union ccb *)&cpi);
@@ -3093,6 +3094,7 @@
 	struct	ccb_trans_settings cts;
 	u_int speed, freq, mb;
 
+	memset(&cts, 0, sizeof(cts));
 	_scsi_announce_periph(periph, &speed, &freq, &cts);
 	if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP)
 		return;