1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 5# 6# Copyright (c) 2022 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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 31 32# Bug 257557 Garbage on disk (or USB memory stick) can cause GEOM taste ffs_sbget() to crash. 33# "panic: wrong length 4352 for sectorsize 512" seen: 34# https://people.freebsd.org/~pho/stress/log/log0159.txt 35 36. ../default.cfg 37 38mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 39cc -o /tmp/flip -Wall -Wextra -O2 ../tools/flip.c || exit 1 40start=`date +%s` 41while [ $((`date +%s` - start)) -lt 120 ]; do 42 dd if=/dev/zero of=$diskimage bs=8m count=1 status=none 43 mdconfig -a -t vnode -f $diskimage -u $mdstart 44 newfs $newfs_flags /dev/md$mdstart > /dev/null 45 mdconfig -d -u $mdstart 46 for i in `jot 10`; do 47 /tmp/flip -n 4 $diskimage 48 mdconfig -a -t vnode -f $diskimage -u $mdstart && 49 mdconfig -d -u $mdstart 50 done 51done 52 53mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 54rm -f $diskimage /tmp/flip 55exit 0 56