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 $mdstart || exit 1 49bsdlabel -w md$mdstart auto 50[ "$newfs_flags" = "-U" ] && opt="-j" 51newfs $opt md${mdstart}$part > /dev/null 52mount /dev/md${mdstart}$part $mntpoint 53 54daemon sh -c '(cd ../testcases/swap; ./swap -t 2m -i 4)' 55parallel=4 56for j in `jot $parallel`; do 57 [ -d $mntpoint/$j ] || mkdir $mntpoint/$j 58done 59for j in `jot $parallel`; do 60 (cd $mntpoint/$j; /tmp/umountf7 100000) & 61done 62sleep 30 63umount -f $mntpoint 64pkill umountf7 65wait 66while pkill -9 swap; do 67 : 68done 69find $mntpoint -type f 70 71while mount | grep "on $mntpoint " | grep -q /dev/md; do 72 umount $mntpoint || sleep 1 73done 74mdconfig -d -u $mdstart 75rm -f /tmp/umountf7 76exit 77 78EOF 79#include <err.h> 80#include <fcntl.h> 81#include <pthread.h> 82#include <stdio.h> 83#include <stdlib.h> 84#include <unistd.h> 85 86pid_t pid; 87volatile int n, n2; 88int mx; 89 90void * 91cr(void *arg __unused) 92{ 93 char file[80]; 94 int fd, i; 95 96 for (i = 0; i < mx; i++) { 97 snprintf(file, sizeof(file), "f%06d.%06d", pid, i); 98 if ((fd = open(file, O_RDWR | O_CREAT | O_TRUNC, 0600)) < 0) 99 err(1, "open(%s)", file); 100 close(fd); 101 n++; 102 } 103 return (0); 104 105} 106 107void * 108mv(void *arg __unused) 109{ 110 char from[80], to[80]; 111 int i; 112 113 for (i = 0; i < mx; i++) { 114 while (n == -1 || i > n) 115 pthread_yield(); 116 snprintf(from, sizeof(from), "f%06d.%06d", pid, i); 117 snprintf(to , sizeof(to ), "g%06d.%06d", pid, i); 118 if (rename(from, to) == -1) 119 warn("rename(%s, %s)", from, to); 120 n2++; 121 } 122 123 return (0); 124} 125 126void * 127rm(void *arg __unused) 128{ 129 char file[80]; 130 int i; 131 132 for (i = 0; i < mx; i++) { 133 while (n2 == -1 || i > n2) 134 pthread_yield(); 135 snprintf(file, sizeof(file), "g%06d.%06d", pid, i); 136 if (unlink(file) == -1) 137 warn("unlink(%s)", file); 138 } 139 140 return (0); 141} 142 143int 144main(int argc, char **argv) 145{ 146 pthread_t rp[3]; 147 int e, i; 148 149 if (argc != 2) 150 errx(1, "Usage: %s <number of files>", argv[0]); 151 mx = atoi(argv[1]); 152 n = n2 = -1; 153 pid = getpid(); 154 155 if ((e = pthread_create(&rp[0], NULL, cr, NULL)) != 0) 156 errc(1, e, "pthread_create"); 157 usleep(arc4random() % 1000); 158 if ((e = pthread_create(&rp[1], NULL, mv, NULL)) != 0) 159 errc(1, e, "pthread_mv"); 160 usleep(arc4random() % 1000); 161 if ((e = pthread_create(&rp[2], NULL, rm, NULL)) != 0) 162 errc(1, e, "pthread_rm"); 163 164 for (i = 0; i < 3; i++) 165 pthread_join(rp[i], NULL); 166 167 return (0); 168} 169