diff --git a/sys/dev/mpr/mpr_sas.c b/sys/dev/mpr/mpr_sas.c
--- a/sys/dev/mpr/mpr_sas.c
+++ b/sys/dev/mpr/mpr_sas.c
@@ -3358,6 +3358,7 @@
 		}
 
 		bzero(&rcap_buf, sizeof(rcap_buf));
+		bzero(&cdai, sizeof(cdai));
 		xpt_setup_ccb(&cdai.ccb_h, path, CAM_PRIORITY_NORMAL);
 		cdai.ccb_h.func_code = XPT_DEV_ADVINFO;
 		cdai.ccb_h.flags = CAM_DIR_IN;
diff --git a/sys/dev/mps/mps_sas.c b/sys/dev/mps/mps_sas.c
--- a/sys/dev/mps/mps_sas.c
+++ b/sys/dev/mps/mps_sas.c
@@ -3204,6 +3204,7 @@
 		}
 
 		bzero(&rcap_buf, sizeof(rcap_buf));
+		bzero(&cdai, sizeof(cdai));
 		xpt_setup_ccb(&cdai.ccb_h, path, CAM_PRIORITY_NORMAL);
 		cdai.ccb_h.func_code = XPT_DEV_ADVINFO;
 		cdai.ccb_h.flags = CAM_DIR_IN;