1#!/bin/sh 2 3# 4# Copyright (c) 2010 Peter Holm <pho@FreeBSD.org> 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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 30 31# Variation of suj5.sh 32# "panic: indir_trunc: Index out of range -2 parent -2061 lbn -2060" seen 33 34. ../default.cfg 35 36here=`pwd` 37cd /tmp 38sed '1,/^EOF/d' < $here/$0 > suj6.c 39mycc -o suj6 -Wall -O2 suj6.c 40rm -f suj6.c 41cd $here 42 43mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 44mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 45mdconfig -a -t swap -s 1g -u $mdstart 46bsdlabel -w md$mdstart auto 47newfs -j md${mdstart}$part > /dev/null 48mount /dev/md${mdstart}$part $mntpoint 49chmod 777 $mntpoint 50 51su $testuser -c "cd $mntpoint; /tmp/suj6" > /dev/null 52 53while mount | grep $mntpoint | grep -q /dev/md; do 54 umount $mntpoint || sleep 1 55done 56mdconfig -d -u $mdstart 57rm -f /tmp/suj6 58exit 59EOF 60#include <err.h> 61#include <fcntl.h> 62#include <stdio.h> 63#include <stdlib.h> 64#include <sys/mount.h> 65#include <sys/param.h> 66#include <sys/stat.h> 67#include <unistd.h> 68#include <sys/wait.h> 69 70#define PARALLEL 10 71 72static int 73random_int(int mi, int ma) 74{ 75 return (arc4random() % (ma - mi + 1) + mi); 76} 77 78static int64_t 79df(void) 80{ 81 char path[MAXPATHLEN+1]; 82 struct statfs buf; 83 84 if (getcwd(path, sizeof(path)) == NULL) 85 err(1, "getcwd()"); 86 87 if (statfs(path, &buf) < 0) 88 err(1, "statfs(%s)", path); 89 printf("Free space on %s: %jd Mb\n", path, buf.f_bavail * buf.f_bsize / 1024 / 1024); 90 return (buf.f_bavail * buf.f_bsize); 91} 92 93static void 94test(int size) 95{ 96 int buf[1024], index, to; 97#ifdef TEST 98 int i; 99#endif 100 int fd; 101 char file[128]; 102 103 sprintf(file,"p%05d", getpid()); 104 if ((fd = creat(file, 0660)) == -1) 105 err(1, "creat(%s)", file); 106 107 to = sizeof(buf); 108 index = 0; 109 while (index < size) { 110 if (index + to > size) 111 to = size - index; 112#ifdef TEST 113 for (i = 0; i < to; i++) 114 buf[i] = index + i; 115#endif 116 index += to; 117 if (write(fd, buf, to) != to) 118 err(1, "write(%s), %s:%d", file, __FILE__, __LINE__); 119 } 120 if (close(fd) == -1) 121 err(1, "close(%s), %s:%d", file, __FILE__, __LINE__); 122 123#if 0 124 if ((fd = open(file, O_RDONLY)) == -1) 125 err(1, "open(%s), %s:%d", file, __FILE__, __LINE__); 126 127 index = 0; 128 while (index < size) { 129 if (index + to > size) 130 to = size - index; 131 if (read(fd, buf, to) != to) 132 err(1, "rw read. %s.%d", __FILE__, __LINE__); 133#ifdef TEST 134 for (i = 0; i < to; i++) { 135 if (buf[i] != index + i) { 136 fprintf(stderr, 137 "%s, pid %d: expected %d @ %d, got %d\n", 138 getprogname(), getpid(), index+i, index+i, 139 buf[i]); 140 exit(EXIT_FAILURE); 141 } 142 } 143#endif 144 index += to; 145 } 146 if (close(fd) == -1) 147 err(1, "close(%s), %s:%d", file, __FILE__, __LINE__); 148#endif 149 if (unlink(file) == -1) 150 err(1, "unlink(%s), %s:%d", file, __FILE__, __LINE__); 151 exit(0); 152} 153 154int 155main() 156{ 157 int i, j, pct; 158 int size; /* in k */ 159 int64_t bl; 160 161 bl = df(); 162 if (bl > (int64_t)INT_MAX * PARALLEL) 163 bl = (int64_t)INT_MAX * PARALLEL; 164 size = bl / PARALLEL / 1024; 165 166 pct = random_int(1, 50); 167 size = size / 100 * pct + 1; 168 if (random_int(1, 100) <= 50) 169 size = 34 * 1024; /* Known good deadlock value */ 170 printf("Max file size: %d Mb\n", size / 1024); 171 172 for (i = 0; i < 100; i++) { 173 for (j = 0; j < PARALLEL; j++) { 174 if (fork() == 0) { 175 test(random_int(1, size) * 1024); 176 } 177 } 178 for (j = 0; j < PARALLEL; j++) 179 wait(NULL); 180 } 181 182 return (0); 183} 184