1#!/bin/sh 2 3# 4# Copyright (c) 2014 EMC Corp. 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# panic: vm_reserv_populate: reserv 0xfffff807cbd3c400 is already promoted 30# http://people.freebsd.org/~pho/stress/log/mmap21.txt 31# Fixed by r280238 32 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34 35. ../default.cfg 36 37here=`pwd` 38cd /tmp 39sed '1,/^EOF/d' < $here/$0 > mmap21.c 40mycc -o mmap21 -Wall -Wextra -O2 -g mmap21.c -lpthread || exit 1 41rm -f mmap21.c 42 43su $testuser -c /tmp/mmap21 44 45rm -f /tmp/mmap21 /tmp/mmap21.core 46exit 0 47EOF 48#include <sys/types.h> 49#include <sys/mman.h> 50#include <sys/stat.h> 51#include <sys/time.h> 52#include <sys/wait.h> 53 54#include <err.h> 55#include <fcntl.h> 56#include <pthread.h> 57#include <pthread_np.h> 58#include <signal.h> 59#include <stdio.h> 60#include <stdlib.h> 61#include <unistd.h> 62 63#define LOOPS 1 64#define NMAPS 50 65#define PARALLEL 2 66 67void *p; 68 69static void * 70tmmap(void *arg __unused) 71{ 72 size_t len; 73 int i; 74 75 pthread_set_name_np(pthread_self(), __func__); 76 len = 1LL * 128 * 1024 * 1024; 77 78 for (i = 0; i < NMAPS; i++) 79 p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0); 80 81 return (NULL); 82} 83 84static void * 85tmlock(void *arg __unused) 86{ 87 size_t len; 88 int i, n; 89 90 pthread_set_name_np(pthread_self(), __func__); 91 n = 0; 92 for (i = 0; i < 200; i++) { 93 len = trunc_page(arc4random()); 94 if (mlock(p, len) == 0) 95 n++; 96 len = trunc_page(arc4random()); 97 if (arc4random() % 100 < 50) 98 if (munlock(p, len) == 0) 99 n++; 100 } 101 if (n < 10) 102 fprintf(stderr, "Note: tmlock() only succeeded %d times.\n", 103 n); 104 105 return (NULL); 106} 107 108static void 109test(void) 110{ 111 pid_t pid; 112 pthread_t tid[2]; 113 int i, rc; 114 115 if ((rc = pthread_create(&tid[0], NULL, tmmap, NULL)) != 0) 116 errc(1, rc, "tmmap()"); 117 if ((rc = pthread_create(&tid[1], NULL, tmlock, NULL)) != 0) 118 errc(1, rc, "tmlock()"); 119 120 for (i = 0; i < 100; i++) { 121 if ((pid = fork()) == 0) { 122 usleep(10000); 123 _exit(0); 124 } 125 if (waitpid(pid, NULL, 0) != pid) 126 err(1, "waitpid(%d)", pid); 127 } 128 129 raise(SIGSEGV); 130 131 for (i = 0; i < 2; i++) 132 if ((rc = pthread_join(tid[i], NULL)) != 0) 133 errc(1, rc, "pthread_join(%d)", i); 134 _exit(0); 135} 136 137int 138main(void) 139{ 140 141 pid_t pids[PARALLEL]; 142 time_t start; 143 int e, i, j, status; 144 145 start = time(NULL); 146 for (i = 0; i < LOOPS; i++) { 147 for (j = 0; j < PARALLEL; j++) { 148 if ((pids[j] = fork()) == 0) 149 test(); 150 } 151 152 e = 0; 153 for (j = 0; j < PARALLEL; j++) { 154 if (waitpid(pids[j], &status, 0) == -1) 155 err(1, "waitpid(%d)", pids[j]); 156 e += status == 0 ? 0 : 1; 157 } 158 if (time(NULL) - start > 1200) { 159 fprintf(stderr, "Timed out."); 160 break; 161 } 162 } 163 164 return (e); 165} 166