diff --git a/sys/dev/hyperv/vmbus/hv_channel.c b/sys/dev/hyperv/vmbus/hv_channel.c
index 46a4ecc9d4f..6da0643bdac 100644
--- a/sys/dev/hyperv/vmbus/hv_channel.c
+++ b/sys/dev/hyperv/vmbus/hv_channel.c
@@ -118,21 +118,21 @@ vmbus_channel_sysctl_create(hv_vmbus_channel* channel)
 	/* This creates dev.DEVNAME.DEVUNIT.channel tree */
 	devch_sysctl = SYSCTL_ADD_NODE(ctx,
 		    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
-		    OID_AUTO, "channel", CTLFLAG_RD, 0, "");
+		    OID_AUTO, "channel", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "");
 	/* This creates dev.DEVNAME.DEVUNIT.channel.CHANID tree */
 	snprintf(name, sizeof(name), "%d", ch_id);
 	devch_id_sysctl = SYSCTL_ADD_NODE(ctx,
 	    	    SYSCTL_CHILDREN(devch_sysctl),
-	    	    OID_AUTO, name, CTLFLAG_RD, 0, "");
+	    	    OID_AUTO, name, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "");
 
 	if (primary_ch != NULL) {
 		devch_sub_sysctl = SYSCTL_ADD_NODE(ctx,
 			SYSCTL_CHILDREN(devch_id_sysctl),
-			OID_AUTO, "sub", CTLFLAG_RD, 0, "");
+			OID_AUTO, "sub", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "");
 		snprintf(name, sizeof(name), "%d", sub_ch_id);
 		devch_id_sysctl = SYSCTL_ADD_NODE(ctx,
 			SYSCTL_CHILDREN(devch_sub_sysctl),
-			OID_AUTO, name, CTLFLAG_RD, 0, "");
+			OID_AUTO, name, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "");
 
 		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(devch_id_sysctl),
 		    OID_AUTO, "chanid", CTLFLAG_RD,
@@ -141,20 +141,20 @@ vmbus_channel_sysctl_create(hv_vmbus_channel* channel)
 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(devch_id_sysctl), OID_AUTO,
 	    "cpu", CTLFLAG_RD, &channel->target_cpu, 0, "owner CPU id");
 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(devch_id_sysctl), OID_AUTO,
-	    "monitor_allocated", CTLTYPE_INT | CTLFLAG_RD, channel, 0,
-	    vmbus_channel_sysctl_monalloc, "I",
+	    "monitor_allocated", CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
+	    channel, 0, vmbus_channel_sysctl_monalloc, "I",
 	    "is monitor allocated to this channel");
 
 	devch_id_in_sysctl = SYSCTL_ADD_NODE(ctx,
                     SYSCTL_CHILDREN(devch_id_sysctl),
                     OID_AUTO,
 		    "in",
-		    CTLFLAG_RD, 0, "");
+		    CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "");
 	devch_id_out_sysctl = SYSCTL_ADD_NODE(ctx,
                     SYSCTL_CHILDREN(devch_id_sysctl),
                     OID_AUTO,
 		    "out",
-		    CTLFLAG_RD, 0, "");
+		    CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "");
 	hv_ring_buffer_stat(ctx,
 		SYSCTL_CHILDREN(devch_id_in_sysctl),
 		&(channel->inbound),
diff --git a/sys/dev/hyperv/vmbus/hv_ring_buffer.c b/sys/dev/hyperv/vmbus/hv_ring_buffer.c
index 3b77645ca98..bd5bda178ab 100644
--- a/sys/dev/hyperv/vmbus/hv_ring_buffer.c
+++ b/sys/dev/hyperv/vmbus/hv_ring_buffer.c
@@ -76,7 +76,7 @@ hv_ring_buffer_stat(
 {
 	SYSCTL_ADD_PROC(ctx, tree_node, OID_AUTO,
 	    "ring_buffer_stats",
-	    CTLTYPE_STRING|CTLFLAG_RD, rbi, 0,
+	    CTLTYPE_STRING|CTLFLAG_RD|CTLFLAG_MPSAFE, rbi, 0,
 	    hv_rbi_sysctl_stats, "A", desc);
 }
 /**