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# Trigger the two EDEADLK in vm/vm_pageout.c 30# OOVM deadlock seen 31# https://people.freebsd.org/~pho/stress/log/pageout.txt 32 33# "panic: handle_written_filepage: not started" seen: 34# https://people.freebsd.org/~pho/stress/log/pageout-2.txt 35 36# "panic: ffs_geom_strategy: bad I/O" seen: 37# https://people.freebsd.org/~pho/stress/log/log0434.txt 38# Fixed by: 7aeea73e3078 39 40[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 41. ../default.cfg 42 43dir=/tmp 44odir=`pwd` 45cd $dir 46sed '1,/^EOF/d' < $odir/$0 > $dir/pageout.c 47mycc -o pageout -Wall -Wextra -g pageout.c || exit 1 48rm -f pageout.c 49cd $odir 50 51mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 52mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 53 54mdconfig -a -t swap -s 2g -u $mdstart || exit 1 55 56[ "$newfs_flags" = "-U" ] && [ `jot -r 1 0 1` -eq 1 ] && newfs_flags="-j" 57[ $# -eq 1 ] && newfs_flags="$1" # or use script argument 58newfs $newfs_flags md$mdstart > /dev/null 59 60mount /dev/md$mdstart $mntpoint 61chmod 777 $mntpoint 62 63f1=$mntpoint/f1 64dd if=/dev/zero of=$f1 bs=1m count=1k status=none 65 66daemon sh -c "(cd ../testcases/swap; ./swap -t 5m -i 20 -l 100 -h)" > /dev/null 67(cd /tmp; /tmp/pageout $f1) & 68sleep .2 69while kill -0 $! 2> /dev/null; do 70 rm -f $mntpoint/.snap/stress2 71 mksnap_ffs $mntpoint $mntpoint/.snap/stress2 72done 73while pgrep -q swap; do 74 pkill swap 75done 76wait 77 78while mount | grep $mntpoint | grep -q /dev/md; do 79 umount $mntpoint || sleep 1 80done 81mdconfig -d -u $mdstart 82rm -f /tmp/pageout /tmp/pageout.core 83exit 84 85EOF 86#include <sys/param.h> 87#include <sys/fcntl.h> 88#include <sys/mman.h> 89#include <sys/stat.h> 90 91#include <err.h> 92#include <errno.h> 93#include <stdio.h> 94#include <stdlib.h> 95#include <time.h> 96#include <unistd.h> 97 98const char *file; 99 100#define RUNTIME 600 101 102void 103test(void) 104{ 105 struct stat st; 106 size_t i, len; 107 time_t start; 108 int error, fd, ps; 109 char *p; 110 111 ps = getpagesize(); 112 if ((fd = open(file, O_RDWR)) == -1) 113 err(1, "open(%s)", file); 114 if ((error = fstat(fd, &st)) == -1) 115 err(1, "stat(%s)", file); 116 len = round_page(st.st_size); 117 do { 118 if ((p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, 119 fd, 0)) == MAP_FAILED) { 120 if (errno == ENOMEM) 121 len -= ps; 122 else 123 err(1, "mmap"); 124 } 125 } while (p == MAP_FAILED); 126 127 start = time(NULL); 128 /* Touch all pages of the file. */ 129 for (i = 0; i < len; i += ps) 130 p[i] = 1; 131 while (time(NULL) - start < RUNTIME) 132 p[arc4random() % len] = 1; 133 134 if (munmap(p, len) == -1) 135 err(1, "unmap()"); 136 close(fd); 137} 138 139int 140main(int argc, char *argv[]) 141{ 142 if (argc != 2) 143 errx(1, "Usage: %s <file>", argv[0]); 144 file = argv[1]; 145 146 test(); 147 148 return (0); 149} 150