Module Name:    src
Committed By:   martin
Date:           Wed Jan  6 20:16:57 UTC 2010

Modified Files:
        src/sys/dev/scsipi: cd.c

Log Message:
Some usb devices come with an internal emulated umass CD drive (containing
windows drivers). I have such a device that has 0 features - avoid wrappig
features_len to a very big unsiged 32bit number in this case.


To generate a diff of this commit:
cvs rdiff -u -r1.296 -r1.297 src/sys/dev/scsipi/cd.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/sys/dev/scsipi/cd.c
diff -u src/sys/dev/scsipi/cd.c:1.296 src/sys/dev/scsipi/cd.c:1.297
--- src/sys/dev/scsipi/cd.c:1.296	Sun Dec  6 22:48:17 2009
+++ src/sys/dev/scsipi/cd.c	Wed Jan  6 20:16:57 2010
@@ -1,4 +1,4 @@
-/*	$NetBSD: cd.c,v 1.296 2009/12/06 22:48:17 dyoung Exp $	*/
+/*	$NetBSD: cd.c,v 1.297 2010/01/06 20:16:57 martin Exp $	*/
 
 /*-
  * Copyright (c) 1998, 2001, 2003, 2004, 2005, 2008 The NetBSD Foundation,
@@ -50,7 +50,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cd.c,v 1.296 2009/12/06 22:48:17 dyoung Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cd.c,v 1.297 2010/01/06 20:16:57 martin Exp $");
 
 #include "rnd.h"
 
@@ -3005,6 +3005,8 @@
 		}
 
 		features_len = _4btol(gc->data_len);
+		if (features_len < 4)
+			break;
 
 		pos  = 0;
 		fpos = &gc->feature_desc[0];

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