1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2020 Peter Holm <pho@FreeBSD.org> 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# Hunt for "panic: ufsdirhash_dirtrunc: bad offset" 31# by making the directory inode grow into the indirect blocks. 32 33# Truncate directories larger than 12 * block_size bytes 34# default is 12 * 32768 = 393216, 384k 35 36# No problems seen. 37 38. ../default.cfg 39[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 40 41dir=/tmp 42odir=`pwd` 43cd $dir 44sed '1,/^EOF/d' < $odir/$0 > $dir/indir.c 45sed -i '' -e "s#MNTPOINT#$mntpoint#g" $dir/indir.c 46mycc -o indir -Wall -Wextra -O0 -g indir.c || exit 1 47rm -f indir.c 48cd $odir 49 50set -e 51mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 52[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 53mdconfig -a -t swap -s 1g -u $mdstart 54newfs -j -n -b 16384 -f 2048 -i 2048 md$mdstart > /dev/null 55mount /dev/md$mdstart $mntpoint 56ifree=`df -i $mntpoint | tail -1 | awk '{print $7 - 50}'` 57set +e 58 59if [ $dtrace ]; then 60 dtrace -w -n '*ufsdirhash_dirtrunc:entry {@rw[execname,probefunc] = \ 61 count(); }' & 62 dpid=$! 63 sleep 2 64fi 65 66/tmp/indir $mntpoint $ifree 67 68if [ $dtrace ]; then 69 kill -s TERM $dpid 70 wait $dpid 71fi 72 73for i in `jot 6`; do 74 mount | grep -q "on $mntpoint " || break 75 umount $mntpoint && break || sleep 10 76 [ $i -eq 6 ] && 77 { echo FATAL; fstat -mf $mntpoint; exit 1; } 78done 79mdconfig -d -u $mdstart 80rm -f /tmp/indir 81if [ $dtrace ]; then 82 while pgrep -q dtrace; do sleep 1; done 83 kldstat | grep -q dtraceall && 84 kldunload dtraceall.ko 85fi 86exit 0 87EOF 88#include <sys/param.h> 89#include <sys/mman.h> 90#include <sys/stat.h> 91#include <sys/wait.h> 92 93#include <err.h> 94#include <errno.h> 95#include <fcntl.h> 96#include <stdatomic.h> 97#include <stdio.h> 98#include <stdlib.h> 99#include <time.h> 100#include <unistd.h> 101 102static long files; 103static char *path; 104 105#define PARALLEL 64 106#define RUNTIME (10 * 60) 107 108static void 109test(int idx) 110{ 111 long j; 112 int fd; 113 pid_t pid; 114 char dir[128], file[128], new[128]; 115 116 sleep(1); 117 118 snprintf(dir, sizeof(dir), "%s/d%d", path, idx); 119 if (mkdir(dir, 0755) == -1) { 120 if (errno != EEXIST) 121 err(1, "mkdir(%s)", dir); 122 } 123 if (chdir(dir) == -1) 124 err(1, "chdir(%s)", dir); 125 126 pid = getpid(); 127 for (j = 0; j < files; j++) { 128 sprintf(file,"p%05d.%05ld", pid, j); 129 if ((fd = creat(file, 0660)) == -1) 130 err(1, "creat(%s). %s:%d", file, __FILE__, __LINE__); 131 if (fd != -1 && close(fd) == -1) 132 err(2, "close(%ld)", j); 133 } 134 135 for (j = 0; j < files; j++) { 136 sprintf(file,"p%05d.%05ld", pid, j); 137 sprintf(new,"p%05d.%05ld.old", pid, j); 138 if (rename(file, new) == -1) 139 err(1, "rename(%s, %s)", file, new); 140 } 141 142 for (j = 0; j < files; j++) { 143 sprintf(file,"p%05d.%05ld", pid, j); 144 sprintf(new,"p%05d.%05ld.old", pid, j); 145 if (rename(new, file) == -1) 146 err(1, "rename(%s, %s)", new, file); 147 } 148 149 for (j = 0; j < files; j++) { 150 sprintf(file,"p%05d.%05ld", pid, j); 151 if (unlink(file) == -1) 152 warn("unlink(%s)", file); 153 154 } 155 if (chdir("..") == -1) 156 err(1, "chdir .."); 157 158 _exit(0); 159} 160 161int 162main(int argc, char *argv[]) 163{ 164 pid_t pids[PARALLEL]; 165 time_t start; 166 int e, i, n, status; 167 168 if (argc != 3) { 169 fprintf(stderr, "Usage %s <path> <files>\n", argv[0]); 170 exit(1); 171 } 172 path = argv[1]; 173 files = atol(argv[2]) / PARALLEL; 174 fprintf(stderr, "Using %ld inodes per dir. %d threads. %ld inodes in total\n", 175 files, PARALLEL, files * PARALLEL); 176 e = n = 0; 177 start = time(NULL); 178 while ((time(NULL) - start) < RUNTIME && e == 0) { 179 fprintf(stderr, "Loop #%d\n", ++n); 180 for (i = 0; i < PARALLEL; i++) { 181 if ((pids[i] = fork()) == 0) 182 test(i); 183 if (pids[i] == -1) 184 err(1, "fork()"); 185 } 186 for (i = 0; i < PARALLEL; i++) { 187 if (waitpid(pids[i], &status, 0) == -1) 188 err(1, "waitpid(%d)", pids[i]); 189 if (status != 0) { 190 if (WIFSIGNALED(status)) 191 fprintf(stderr, 192 "pid %d exit signal %d\n", 193 pids[i], WTERMSIG(status)); 194 } 195 e += status == 0 ? 0 : 1; 196 } 197// system("(cd MNTPOINT; umount MNTPOINT) > /dev/null 2>&1"); 198 } 199 200 return (e); 201} 202