Date: Mon, 28 Oct 2019 12:40:12 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r354133 - user/pho/stress2/misc Message-ID: <201910281240.x9SCeCDp084052@repo.freebsd.org>
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Author: pho Date: Mon Oct 28 12:40:12 2019 New Revision: 354133 URL: https://svnweb.freebsd.org/changeset/base/354133 Log: Added a regression test. Sponsored by: Dell EMC Isilon Added: user/pho/stress2/misc/kpti.sh (contents, props changed) Added: user/pho/stress2/misc/kpti.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/kpti.sh Mon Oct 28 12:40:12 2019 (r354133) @@ -0,0 +1,52 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2019 Dell EMC Isilon +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# + +# Simple test of kpti (Kernel page-table isolation) enable / disable + +# Page fault seen: https://people.freebsd.org/~pho/stress/log/dougm061.txt +# Fixed by r354132 + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 +proccontrol -m kpti -q 2> /dev/null || exit 0 +[ `sysctl -n vm.pmap.pti` -eq 1 ] && echo "Page Table Isolation enabled" || + echo "Page Table Isolation disabled" + +prog=date +[ $# -eq 1 ] && prog=$1 +start=`date +%s` +while [ $((`date +%s` - start)) -lt 120 ]; do + for i in `jot 50`; do + proccontrol -m kpti -s disable $prog & + proccontrol -m kpti -s enable $prog & + done > /dev/null + wait +done +exit 0
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