1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2019 Peter Holm 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# A "(cd /mnt; umount /mnt)" test scenario, which triggered random memory 31# corruptions. 32 33# Page fault seen: https://people.freebsd.org/~pho/stress/log/kostik1230.txt 34# First seen with r354204 35# Initial fix by r354367 36 37. ../default.cfg 38[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 39 40mount | grep -q "on $mntpoint " && umount $mntpoint 41mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 42 43mdconfig -a -t swap -s 1g -u $mdstart || exit 1 44 45for opt in "-U" "-j"; do 46 echo "newfs $opt md$mdstart" 47 newfs $opt md$mdstart > /dev/null 48 mount /dev/md$mdstart $mntpoint || exit 1 49 pids="" 50 for i in `jot 3`; do 51 while true; do 52 dd if=/dev/zero of=$mntpoint/$i bs=1m \ 53 count=`jot -r 1 1 10` status=none 54 done & 55 pids="$pids $!" 56 done 57 58 start=`date +%s` 59 while [ $((`date +%s` - start)) -lt 60 ]; do 60 (cd $mntpoint; umount $mntpoint) 61 done > /dev/null 2>&1 62 kill $pids 63 wait 64 65 while true; do 66 umount $mntpoint && break 67 sleep 1 68 done 69done 70mdconfig -d -u $mdstart 71exit 0 72