1#!/bin/sh 2 3# 4# Copyright (c) 2015 EMC Corp. 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# "panic: vm_page_unwire: page 0xc36cafbc's wire count is zero" seen. 30# https://people.freebsd.org/~pho/stress/log/mmap24.txt 31# Test scenario by trasz@. 32# Fixed by r285878. 33 34[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 35 36. ../default.cfg 37 38dir=/tmp 39odir=`pwd` 40cd $dir 41sed '1,/^EOF/d' < $odir/$0 > $dir/mmap24.c 42mycc -o mmap24 -Wall -Wextra mmap24.c || exit 1 43rm -f mmap24.c 44cd $odir 45 46[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 47mdconfig -a -t swap -s 1g -u $mdstart || exit 1 48newfs $newfs_flags md$mdstart > /dev/null 49mount /dev/md$mdstart $mntpoint 50chmod 777 $mntpoint 51 52cp /tmp/mmap24 $mntpoint 53(cd $mntpoint; ./mmap24) & 54sleep .2 55umount -f $mntpoint 56 57kill $! 58wait 59 60while mount | grep "on $mntpoint " | grep -q /dev/md; do 61 umount $mntpoint || sleep 1 62done 63mdconfig -d -u $mdstart 64 65rm -f /tmp/mmap24 66exit 67 68EOF 69#include <sys/fcntl.h> 70#include <sys/mman.h> 71#include <sys/param.h> 72#include <sys/stat.h> 73#include <sys/types.h> 74#include <sys/wait.h> 75 76#include <err.h> 77#include <errno.h> 78#include <stdlib.h> 79#include <unistd.h> 80 81#include <sys/mman.h> 82#include <err.h> 83#include <stdio.h> 84#include <unistd.h> 85 86int 87main(void) 88{ 89 int error; 90 91 error = mlockall(MCL_CURRENT | MCL_FUTURE); 92 if (error != 0) 93 err(1, "mlockall"); 94 95 for (;;) { 96 sleep(1); 97 } 98} 99