[src/trunk]: src/sys/compat/svr4 Zero stack data before copyout.

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

details:   https://anonhg.NetBSD.org/src/rev/1cf3fa651766
branches:  trunk
changeset: 355414:1cf3fa651766
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Fri Jul 28 16:57:12 2017 +0000

description:
Zero stack data before copyout.

>From Ilja Van Sprundel.

diffstat:

 sys/compat/svr4/svr4_lwp.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (27 lines):

diff -r e6fb3b894ba1 -r 1cf3fa651766 sys/compat/svr4/svr4_lwp.c
--- a/sys/compat/svr4/svr4_lwp.c        Fri Jul 28 16:55:48 2017 +0000
+++ b/sys/compat/svr4/svr4_lwp.c        Fri Jul 28 16:57:12 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: svr4_lwp.c,v 1.19 2009/11/23 00:46:07 rmind Exp $      */
+/*     $NetBSD: svr4_lwp.c,v 1.20 2017/07/28 16:57:12 riastradh Exp $  */
 
 /*-
  * Copyright (c) 1999 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: svr4_lwp.c,v 1.19 2009/11/23 00:46:07 rmind Exp $");
+__KERNEL_RCSID(0, "$NetBSD: svr4_lwp.c,v 1.20 2017/07/28 16:57:12 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -108,6 +108,8 @@
        struct svr4_lwpinfo lwpinfo;
        int error;
 
+       memset(&lwpinfo, 0, sizeof(lwpinfo));
+
        /* XXX NJWLWP */
        TIMEVAL_TO_TIMESPEC(&l->l_proc->p_stats->p_ru.ru_stime, &lwpinfo.lwp_stime);
        TIMEVAL_TO_TIMESPEC(&l->l_proc->p_stats->p_ru.ru_utime, &lwpinfo.lwp_utime);