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From: Alexander Motin <mav@FreeBSD.org>
Date: Mon, 22 Sep 2014 10:46:07 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r271954 - head/sys/cam/ctl
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Author: mav
Date: Mon Sep 22 10:46:06 2014
New Revision: 271954
URL: http://svnweb.freebsd.org/changeset/base/271954

Log:
  Deny ANCHOR flag set without UNMAP flag set in WRITE SAME commands.

Modified:
  head/sys/cam/ctl/ctl.c

Modified: head/sys/cam/ctl/ctl.c
==============================================================================
--- head/sys/cam/ctl/ctl.c	Mon Sep 22 10:21:42 2014	(r271953)
+++ head/sys/cam/ctl/ctl.c	Mon Sep 22 10:46:06 2014	(r271954)
@@ -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);