From 9e711a15d73e7f9e8992f45e4b5969b413680623 Mon Sep 17 00:00:00 2001
From: mav <mav@FreeBSD.org>
Date: Mon, 22 Sep 2014 10:46:06 +0000
Subject: Deny ANCHOR flag set without UNMAP flag set in WRITE SAME commands.

---
 sys/cam/ctl/ctl.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sys/cam/ctl/ctl.c b/sys/cam/ctl/ctl.c
index 37e0339..39c0dc1 100644
--- a/sys/cam/ctl/ctl.c
+++ b/sys/cam/ctl/ctl.c
@@ -5987,8 +5987,9 @@ ctl_write_same(struct ctl_scsiio *ctsio)
 		break; /* NOTREACHED */
 	}
 
-	/* NDOB flag can be used only together with UNMAP */
-	if ((byte2 & (SWS_NDOB | SWS_UNMAP)) == SWS_NDOB) {
+	/* NDOB and ANCHOR flags can be used only together with UNMAP */
+	if ((byte2 & SWS_UNMAP) == 0 &&
+	    (byte2 & (SWS_NDOB | SWS_ANCHOR)) != 0) {
 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
 		    /*command*/ 1, /*field*/ 1, /*bit_valid*/ 1, /*bit*/ 0);
 		ctl_done((union ctl_io *)ctsio);
-- 
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