[src/trunk]: src/sys/kern Don't read past the end of the sample buffer... (S...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c52dab818b26
branches:  trunk
changeset: 807399:c52dab818b26
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Wed Apr 08 13:24:23 2015 +0000

description:
Don't read past the end of the sample buffer...  (Seriously???)

diffstat:

 sys/kern/kern_rndq.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r eff9e3ae011a -r c52dab818b26 sys/kern/kern_rndq.c
--- a/sys/kern/kern_rndq.c      Wed Apr 08 13:16:37 2015 +0000
+++ b/sys/kern/kern_rndq.c      Wed Apr 08 13:24:23 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_rndq.c,v 1.37 2015/04/08 03:14:29 riastradh Exp $ */
+/*     $NetBSD: kern_rndq.c,v 1.38 2015/04/08 13:24:23 riastradh Exp $ */
 
 /*-
  * Copyright (c) 1997-2013 The NetBSD Foundation, Inc.
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_rndq.c,v 1.37 2015/04/08 03:14:29 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_rndq.c,v 1.38 2015/04/08 13:24:23 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -1070,7 +1070,7 @@
                SIMPLEQ_REMOVE_HEAD(&dq_samples, next);
                source = sample->source;
                entropy = sample->entropy;
-               sample_count = sample->cursor + 1;
+               sample_count = sample->cursor;
 
                /*
                 * Don't provide a side channel for timing attacks on