From 10643dd70e3c7e96b6dd1eb4f257dd754447359b Mon Sep 17 00:00:00 2001
From: Alexander Motin <mav@FreeBSD.org>
Date: Mon, 26 Oct 2015 14:14:56 +0000
Subject: [PATCH] Don't try to replicate mode pages not present on this device.

MFC after:	3 days
---
 sys/cam/ctl/ctl.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sys/cam/ctl/ctl.c b/sys/cam/ctl/ctl.c
index 1013ae7f444..0d10721bbf7 100644
--- a/sys/cam/ctl/ctl.c
+++ b/sys/cam/ctl/ctl.c
@@ -927,6 +927,11 @@ ctl_isc_announce_mode(struct ctl_lun *lun, uint32_t initidx,
 	}
 	if (i == CTL_NUM_MODE_PAGES)
 		return;
+
+	/* Don't try to replicate pages not present on this device. */
+	if (lun->mode_pages.index[i].page_data == NULL)
+		return;
+
 	bzero(&msg.mode, sizeof(msg.mode));
 	msg.hdr.msg_type = CTL_MSG_MODE_SYNC;
 	msg.hdr.nexus.targ_port = initidx / CTL_MAX_INIT_PER_PORT;