1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 5# 6# Copyright (c) 2023 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# Regression test for D37997: ffs_syncvnode(): avoid a LoR for SU 31# https://people.freebsd.org/~pho/stress/log/log0402.txt 32# Fixed by 6e1eabadcb1d - main - ffs_syncvnode(): avoid a LoR for SU 33 34# Test scenario based on report by jkim 35 36. ../default.cfg 37[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 38 39dir=/tmp 40odir=`pwd` 41prog=$(basename "$0" .sh) 42cd $dir 43sed '1,/^EOF/d' < $odir/$0 > $dir/$prog.c 44mycc -o $prog -Wall -Wextra -O0 -g $prog.c -lpthread || exit 1 45rm -f $prog.c 46cd $odir 47 48set -eu 49mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 50[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 51mdconfig -a -t swap -s 1g -u $mdstart 52newfs -U md$mdstart > /dev/null 53mount /dev/md$mdstart $mntpoint 54set +e 55 56cd $odir 57../testcases/swap/swap -t 1m -i 20 -l 100 > /dev/null & 58sleep .5 59cd $mntpoint 60mkdir -p d1/d2/d3/d4/d5 61for i in `jot 8`; do 62 $dir/$prog $i & 63done 64cd $odir 65wait 66 67for i in `jot 6`; do 68 mount | grep -q "on $mntpoint " || break 69 umount $mntpoint && break || sleep 10 70 [ $i -eq 6 ] && 71 { echo FATAL; fstat -mf $mntpoint; exit 1; } 72done 73mdconfig -d -u $mdstart 74rm -rf $dir/$prog 75exit 0 76EOF 77#include <sys/types.h> 78#include <sys/stat.h> 79 80#include <err.h> 81#include <fcntl.h> 82#include <pthread.h> 83#include <pthread_np.h> 84#include <signal.h> 85#include <stdio.h> 86#include <stdlib.h> 87#include <string.h> 88#include <unistd.h> 89 90#define RUNTIME 60 91 92static time_t start; 93static volatile int fd, n; 94static char buf[4096]; 95 96static void * 97t1(void *data __unused) 98{ 99 char *path = "d1/d2/d3/d4/d5"; 100 char d1[1024], d2[1024], file[1024]; 101 102 pthread_set_name_np(pthread_self(), __func__); 103 snprintf(d1, sizeof(d1), "%s/dir.%d", path, getpid()); 104 snprintf(d2, sizeof(d2), "%s/new.%d", path, getpid()); 105 snprintf(file, sizeof(file), "%s/../file.%d", path, getpid()); 106 while (time(NULL) - start < RUNTIME) { 107 if (mkdir(d1, 0740) == -1) 108 err(1, "mkdir(%s)", d1); 109 if (rename(d1, d2) == -1) 110 err(1, "rename(%s, %s)", d1, d2); 111 if ((fd = open(file, O_RDWR | O_CREAT | O_TRUNC, 0600)) == -1) 112 err(1, "open%s()", file); 113 if (write(fd, buf, sizeof(buf)) != sizeof(buf)) 114 err(1, "write()"); 115 close(fd); 116 if (rename(d2, d1) == -1) 117 err(1, "rename(%s, %s)", d2, d1); 118 if (rmdir(d1) == -1) 119 err(1, "rmdir(%s)", d1); 120 } 121 122 return (NULL); 123} 124 125static void * 126t2(void *data __unused) 127{ 128 pthread_set_name_np(pthread_self(), __func__); 129 while (time(NULL) - start < RUNTIME) { 130 fsync(fd); 131 usleep(arc4random() % 500); 132 } 133 134 return (NULL); 135} 136 137int 138main(int argc __unused, char *argv[]) 139{ 140 pthread_t tid[2]; 141 int r; 142 143 n = atoi(argv[1]); 144 start = time(NULL); 145 if ((r = pthread_create(&tid[0], NULL, t1, NULL)) != 0) 146 errc(1, r, "pthread_create"); 147 if ((r = pthread_create(&tid[1], NULL, t2, NULL)) != 0) 148 errc(1, r, "pthread_create"); 149 150 if ((r = pthread_join(tid[0], NULL)) != 0) 151 errc(1, r, "pthread_join"); 152 if ((r = pthread_join(tid[1], NULL)) != 0) 153 errc(1, r, "pthread_join"); 154 155 return (0); 156} 157