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# Core dump wedge 30# Trimmed down version of mmap15.sh 31# http://people.freebsd.org/~pho/stress/log/mmap15-2.txt 32# Fixed in r272534 + r272535. 33 34# Page fault seen: http://people.freebsd.org/~pho/stress/log/kostik733.txt 35# Fixed in r274474. 36 37[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 38 39. ../default.cfg 40 41here=`pwd` 42cd /tmp 43sed '1,/^EOF/d' < $here/$0 > mmap22.c 44mycc -o mmap22 -Wall -Wextra -O0 -g mmap22.c -lpthread || exit 1 45rm -f mmap22.c 46 47su $testuser -c /tmp/mmap22 & 48 49sleep 300 50while pgrep -q mmap22; do 51 pkill -9 mmap22 52 sleep 2 53done 54wait 55 56rm -f /tmp/mmap22 /tmp/mmap22.core 57exit 0 58EOF 59#include <sys/mman.h> 60#include <sys/param.h> 61#include <sys/stat.h> 62#include <sys/wait.h> 63 64#include <err.h> 65#include <errno.h> 66#include <fcntl.h> 67#include <pthread.h> 68#include <signal.h> 69#include <stdio.h> 70#include <stdlib.h> 71#include <unistd.h> 72 73#define MMAPS 25 74#define PARALLEL 4 75#define SIZ (64 * 1024 * 1024) 76 77void * 78tmmap(void *arg __unused) 79{ 80 size_t len; 81 void *p __unused; 82 int i; 83 84 len = SIZ; 85 for (i = 0; i < MMAPS; i++) 86 p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0); 87 fsync(fileno(stdout)); 88 89 return (NULL); 90} 91 92void 93test(void) 94{ 95 pthread_t tid; 96 int i, rc; 97 98 if ((rc = pthread_create(&tid, NULL, tmmap, NULL)) != 0) 99 errc(1, rc, "test()"); 100 101 for (i = 0; i < 100; i++) { 102 if (fork() == 0) { 103 usleep(10000); 104 _exit(0); 105 } 106 wait(NULL); 107 } 108 109 raise(SIGSEGV); 110 111 if ((rc = pthread_join(tid, NULL)) != 0) 112 errc(1, rc, "pthread_join(%d)", i); 113 _exit(0); 114} 115 116int 117main(void) 118{ 119 int i; 120 121 for (i = 0; i < PARALLEL; i++) { 122 if (fork() == 0) 123 test(); 124 } 125 126 for (i = 0; i < PARALLEL; i++) 127 wait(NULL); 128 129 return (0); 130} 131