1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2019 Dell EMC Isilon 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# Test threaded access to /dev/midistat. 31 32# "panic: vm_fault_hold: fault on nofault entry, addr: 0x8b352000" seen. 33# https://people.freebsd.org/~pho/stress/log/mark089.txt 34# Fixed by 351262 35 36. ../default.cfg 37[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 38 39dir=/tmp 40odir=`pwd` 41cd $dir 42sed '1,/^EOF/d' < $odir/$0 > $dir/midi2.c 43mycc -o midi2 -Wall -Wextra -O0 -g midi2.c -lpthread || exit 1 44 45$dir/midi2 46s=$? 47cat /dev/midistat > /dev/null || s=1 48 49rm -rf midi2 midi2.c midi2.core 50exit $s 51 52EOF 53#include <sys/param.h> 54 55#include <machine/atomic.h> 56 57#include <err.h> 58#include <errno.h> 59#include <fcntl.h> 60#include <pthread.h> 61#include <stdio.h> 62#include <stdlib.h> 63#include <time.h> 64#include <unistd.h> 65 66static volatile u_int share; 67static int fd; 68static char buf[0xbc59], buf2[0x40eddf]; 69 70#define THREADS 4 71#define RUNTIME (1 * 60) 72#define SYNC 0 73 74static void * 75t1(void *data __unused) 76{ 77 78 atomic_add_int(&share, 1); 79 while (share != THREADS) 80 ; 81 82 pread(fd, buf, 0xbc59, 0x27dbb298LL); 83 pread(fd, buf, 0xbc59, 0x104e35c6d22eLL); 84 pread(fd, buf2, 0x40eddf, 0x405d1df88cbf41LL); 85 86 return (NULL); 87} 88 89int 90main(void) 91{ 92 pthread_t tid[THREADS]; 93 time_t start; 94 int i, rc; 95 96 if ((fd = open("/dev/midistat", O_RDONLY)) == -1) 97 err(1, "open(/dev/midistat)"); 98 start = time(NULL); 99 while ((time(NULL) - start) < RUNTIME) { 100 share = 0; 101 for (i = 0; i < THREADS; i++) { 102 if ((rc = pthread_create(&tid[i], NULL, t1, NULL)) != 103 0) 104 errc(1, rc, "pthread_create"); 105 } 106 107 for (i = 0; i < THREADS; i++) { 108 if ((rc = pthread_join(tid[i], NULL)) != 0) 109 errc(1, rc, "pthread_join"); 110 } 111 } 112 113 return (0); 114} 115