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/pmc4.c 38mycc -o pmc4 -Wall -Wextra -O0 -g pmc4.c -lpmc -lpthread || exit 0 39rm -f pmc4.c 40 41for i in `jot 100`; do 42 ./pmc4 43done > /dev/null 2>&1 44 45rm -rf pmc4 pmc4.core 46[ $loaded ] && kldunload hwpmc 47exit 0 48 49EOF 50#include <sys/param.h> 51#include <sys/event.h> 52 53#include <err.h> 54#include <pmc.h> 55#include <pmclog.h> 56#include <pthread.h> 57#include <stdio.h> 58#include <stdlib.h> 59#include <unistd.h> 60 61static int fd1[2]; 62static int kq; 63#define THREADS 20 64 65static void * 66test(void *arg __unused) 67{ 68 69 void *rfd; 70 char *cmdline[] = { "/usr/bin/true", NULL }; 71 72 if ((rfd = pmclog_open(kq)) == NULL) 73 err(1, "pmclog_open(%d)", kq); 74 if (pmc_configure_logfile(kq) < 0) 75 err(1, "ERROR: Cannot configure log file"); 76 sleep(1); 77 usleep(arc4random() % 20000); 78 if (execve(cmdline[0], cmdline, NULL) == -1) 79 err(1, "execve"); 80 81 return (0); 82} 83 84int 85main(void) 86{ 87 struct kevent ev[3]; 88 pthread_t tid[THREADS]; 89 int i, n, rc; 90 91 if (pmc_init() == -1) 92 err(1, "pmc_init"); 93 94 if (pipe(fd1) == -1) 95 err(1, "pipe()"); 96 97 if ((kq = kqueue()) < 0) 98 err(1, "kqueue(). %s:%d", __FILE__, __LINE__); 99 100 n = 0; 101 EV_SET(&ev[n], fd1[1], EVFILT_WRITE, 102 EV_ADD | EV_ENABLE | EV_CLEAR, 0, 0, 0); 103 n++; 104 105 if (kevent(kq, ev, n, NULL, 0, NULL) < 0) 106 err(1, "kevent(). %s:%d", __FILE__, __LINE__); 107 n = 0; 108 EV_SET(&ev[n], fd1[1], EVFILT_WRITE, 109 EV_DELETE, 0, 0, 0); 110 n++; 111 if (kevent(kq, ev, n, NULL, 0, NULL) < 0) 112 warn("kevent(). %s:%d", __FILE__, __LINE__); 113 114 for (i = 0; i < THREADS; i++) { 115 if ((rc = pthread_create(&tid[i], NULL, test, NULL)) != 0) 116 errc(1, rc, "test()"); 117 } 118 for (i = 0; i < THREADS; i++) { 119 if ((rc = pthread_join(tid[i], NULL)) != 0) 120 errc(1, rc, "pthread_join(%d)", i); 121 } 122 123 return (0); 124} 125