1#!/bin/sh 2 3# 4# Copyright (c) 2017 Dell EMC Isilon 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# pmc fuzz test 30 31. ../default.cfg 32 33kldstat -v | grep -q hwpmc || { kldload hwpmc; loaded=1; } 34dir=/tmp 35odir=`pwd` 36cd $dir 37sed '1,/^EOF/d' < $odir/$0 > $dir/pmc5.c 38mycc -o pmc5 -Wall -Wextra -O0 -g pmc5.c -lpmc -lpthread || exit 1 39rm -f pmc5.c 40 41for i in `jot 100`; do 42 ./pmc5 43done > /dev/null 2>&1 44 45rm -rf pmc5 pmc5.core 46[ $loaded ] && kldunload hwpmc 47exit 0 48 49EOF 50#include <sys/param.h> 51#include <sys/event.h> 52#include <sys/mman.h> 53 54#include <machine/atomic.h> 55 56#include <err.h> 57#include <pmc.h> 58#include <pmclog.h> 59#include <pthread.h> 60#include <stdio.h> 61#include <stdlib.h> 62#include <unistd.h> 63 64static volatile u_int *share; 65static int fd1[2]; 66static int kq; 67#define THREADS 20 68#define SYNC 0 69 70void * 71test(void *arg __unused) 72{ 73 74 void *rfd; 75 char *cmdline[] = { "/usr/bin/true", NULL }; 76 77 atomic_add_int(&share[SYNC], 1); 78 while (share[SYNC] != THREADS) 79 ; 80 if ((rfd = pmclog_open(kq)) == NULL) 81 err(1, "pmclog_open(%d)", kq); 82// if (pmc_configure_logfile(fd1[1]) < 0) 83 if (pmc_configure_logfile(kq) < 0) 84 err(1, "ERROR: Cannot configure log file"); 85 sleep(1); 86 usleep(arc4random() % 20000); 87 if (execve(cmdline[0], cmdline, NULL) == -1) 88 err(1, "execve"); 89 90 return (0); 91} 92 93int 94main(void) 95{ 96 struct kevent ev[3]; 97 pthread_t tid[THREADS]; 98 size_t len; 99 int i, n, rc; 100 101 len = PAGE_SIZE; 102 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 103 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 104 err(1, "mmap"); 105 if (pmc_init() == -1) 106 err(1, "pmc_init"); 107 108 if (pipe(fd1) == -1) 109 err(1, "pipe()"); 110 111 if ((kq = kqueue()) < 0) 112 err(1, "kqueue(). %s:%d", __FILE__, __LINE__); 113 114 n = 0; 115 EV_SET(&ev[n], fd1[1], EVFILT_WRITE, 116 EV_ADD | EV_ENABLE | EV_CLEAR, 0, 0, 0); 117 n++; 118 119 if (kevent(kq, ev, n, NULL, 0, NULL) < 0) 120 err(1, "kevent(). %s:%d", __FILE__, __LINE__); 121 n = 0; 122 EV_SET(&ev[n], fd1[1], EVFILT_WRITE, 123 EV_DELETE, 0, 0, 0); 124 n++; 125 if (kevent(kq, ev, n, NULL, 0, NULL) < 0) 126 warn("kevent(). %s:%d", __FILE__, __LINE__); 127 128 for (i = 0; i < THREADS; i++) { 129 if ((rc = pthread_create(&tid[i], NULL, test, NULL)) != 0) 130 errc(1, rc, "test()"); 131 } 132 for (i = 0; i < THREADS; i++) { 133 if ((rc = pthread_join(tid[i], NULL)) != 0) 134 errc(1, rc, "pthread_join(%d)", i); 135 } 136 137 return (0); 138} 139