1#!/bin/sh 2 3# 4# Copyright (c) 2013 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: handle_written_inodeblock: live inodedep 0xcc731200" seen. 30# http://people.freebsd.org/~pho/stress/log/umountf7.txt 31# https://people.freebsd.org/~pho/stress/log/kostik824.txt 32# Problem only seen with SU+J. 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/umountf7.c 42mycc -o umountf7 -Wall -Wextra umountf7.c -lpthread || exit 1 43rm -f umountf7.c 44cd $odir 45 46mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 47mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 48mdconfig -a -t swap -s 3g -u $mdstart || exit 1 49[ "$newfs_flags" = "-U" ] && opt="-j" 50newfs $opt md$mdstart > /dev/null 51mount /dev/md$mdstart $mntpoint 52 53daemon sh -c '(cd ../testcases/swap; ./swap -t 2m -i 4)' 54parallel=4 55for j in `jot $parallel`; do 56 [ -d $mntpoint/$j ] || mkdir $mntpoint/$j 57done 58for j in `jot $parallel`; do 59 (cd $mntpoint/$j; /tmp/umountf7 100000) & 60done 61sleep 30 62umount -f $mntpoint 63pkill umountf7 64wait 65while pkill -9 swap; do 66 : 67done 68find $mntpoint -type f 69 70while mount | grep "on $mntpoint " | grep -q /dev/md; do 71 umount $mntpoint || sleep 1 72done 73mdconfig -d -u $mdstart 74rm -f /tmp/umountf7 75exit 76 77EOF 78#include <err.h> 79#include <fcntl.h> 80#include <pthread.h> 81#include <stdio.h> 82#include <stdlib.h> 83#include <unistd.h> 84 85pid_t pid; 86volatile int n, n2; 87int mx; 88 89void * 90cr(void *arg __unused) 91{ 92 char file[80]; 93 int fd, i; 94 95 for (i = 0; i < mx; i++) { 96 snprintf(file, sizeof(file), "f%06d.%06d", pid, i); 97 if ((fd = open(file, O_RDWR | O_CREAT | O_TRUNC, 0600)) < 0) 98 err(1, "open(%s)", file); 99 close(fd); 100 n++; 101 } 102 return (0); 103 104} 105 106void * 107mv(void *arg __unused) 108{ 109 char from[80], to[80]; 110 int i; 111 112 for (i = 0; i < mx; i++) { 113 while (n == -1 || i > n) 114 pthread_yield(); 115 snprintf(from, sizeof(from), "f%06d.%06d", pid, i); 116 snprintf(to , sizeof(to ), "g%06d.%06d", pid, i); 117 if (rename(from, to) == -1) 118 warn("rename(%s, %s)", from, to); 119 n2++; 120 } 121 122 return (0); 123} 124 125void * 126rm(void *arg __unused) 127{ 128 char file[80]; 129 int i; 130 131 for (i = 0; i < mx; i++) { 132 while (n2 == -1 || i > n2) 133 pthread_yield(); 134 snprintf(file, sizeof(file), "g%06d.%06d", pid, i); 135 if (unlink(file) == -1) 136 warn("unlink(%s)", file); 137 } 138 139 return (0); 140} 141 142int 143main(int argc, char **argv) 144{ 145 pthread_t rp[3]; 146 int e, i; 147 148 if (argc != 2) 149 errx(1, "Usage: %s <number of files>", argv[0]); 150 mx = atoi(argv[1]); 151 n = n2 = -1; 152 pid = getpid(); 153 154 if ((e = pthread_create(&rp[0], NULL, cr, NULL)) != 0) 155 errc(1, e, "pthread_create"); 156 usleep(arc4random() % 1000); 157 if ((e = pthread_create(&rp[1], NULL, mv, NULL)) != 0) 158 errc(1, e, "pthread_mv"); 159 usleep(arc4random() % 1000); 160 if ((e = pthread_create(&rp[2], NULL, rm, NULL)) != 0) 161 errc(1, e, "pthread_rm"); 162 163 for (i = 0; i < 3; i++) 164 pthread_join(rp[i], NULL); 165 166 return (0); 167} 168