1*8a272653SPeter Holm#!/bin/sh 2*8a272653SPeter Holm 3*8a272653SPeter Holm# 4*8a272653SPeter Holm# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5*8a272653SPeter Holm# 6*8a272653SPeter Holm# Copyright (c) 2019 Dell EMC Isilon 7*8a272653SPeter Holm# 8*8a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 9*8a272653SPeter Holm# modification, are permitted provided that the following conditions 10*8a272653SPeter Holm# are met: 11*8a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 12*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 13*8a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 14*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 15*8a272653SPeter Holm# documentation and/or other materials provided with the distribution. 16*8a272653SPeter Holm# 17*8a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18*8a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19*8a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20*8a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21*8a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22*8a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23*8a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24*8a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25*8a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26*8a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27*8a272653SPeter Holm# SUCH DAMAGE. 28*8a272653SPeter Holm# 29*8a272653SPeter Holm 30*8a272653SPeter Holm# Simple test of kpti (Kernel page-table isolation) enable / disable 31*8a272653SPeter Holm 32*8a272653SPeter Holm# Page fault seen: https://people.freebsd.org/~pho/stress/log/dougm061.txt 33*8a272653SPeter Holm# Fixed by r354132 34*8a272653SPeter Holm 35*8a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 36*8a272653SPeter Holmproccontrol -m kpti -q 2> /dev/null || exit 0 37*8a272653SPeter Holm[ `sysctl -n vm.pmap.pti` -eq 1 ] && echo "Page Table Isolation enabled" || 38*8a272653SPeter Holm echo "Page Table Isolation disabled" 39*8a272653SPeter Holm 40*8a272653SPeter Holmprog=date 41*8a272653SPeter Holm[ $# -eq 1 ] && prog=$1 42*8a272653SPeter Holmstart=`date +%s` 43*8a272653SPeter Holmwhile [ $((`date +%s` - start)) -lt 120 ]; do 44*8a272653SPeter Holm for i in `jot 50`; do 45*8a272653SPeter Holm proccontrol -m kpti -s disable $prog & 46*8a272653SPeter Holm proccontrol -m kpti -s enable $prog & 47*8a272653SPeter Holm done > /dev/null 48*8a272653SPeter Holm wait 49*8a272653SPeter Holmdone 50*8a272653SPeter Holmexit 0 51