#!/bin/sh
#
# Copyright (c) 2014 EMC Corp.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# panic: vm_reserv_populate: reserv 0xfffff807cbd3c400 is already promoted
# http://people.freebsd.org/~pho/stress/log/mmap21.txt
# Fixed by r280238
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
. ../default.cfg
here=`pwd`
cd /tmp
sed '1,/^EOF/d' < $here/$0 > mmap21.c
mycc -o mmap21 -Wall -Wextra -O2 -g mmap21.c -lpthread || exit 1
rm -f mmap21.c
su $testuser -c /tmp/mmap21
rm -f /tmp/mmap21 /tmp/mmap21.core
exit 0
EOF
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <err.h>
#include <fcntl.h>
#include <pthread.h>
#include <pthread_np.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define LOOPS 1
#define NMAPS 50
#define PARALLEL 2
void *p;
static void *
tmmap(void *arg __unused)
{
size_t len;
int i;
pthread_set_name_np(pthread_self(), __func__);
len = 1LL * 128 * 1024 * 1024;
for (i = 0; i < NMAPS; i++)
p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
return (NULL);
}
static void *
tmlock(void *arg __unused)
{
size_t len;
int i, n;
pthread_set_name_np(pthread_self(), __func__);
n = 0;
for (i = 0; i < 200; i++) {
len = trunc_page(arc4random());
if (mlock(p, len) == 0)
n++;
len = trunc_page(arc4random());
if (arc4random() % 100 < 50)
if (munlock(p, len) == 0)
n++;
}
if (n < 10)
fprintf(stderr, "Note: tmlock() only succeeded %d times.\n",
n);
return (NULL);
}
static void
test(void)
{
pid_t pid;
pthread_t tid[2];
int i, rc;
if ((rc = pthread_create(&tid[0], NULL, tmmap, NULL)) != 0)
errc(1, rc, "tmmap()");
if ((rc = pthread_create(&tid[1], NULL, tmlock, NULL)) != 0)
errc(1, rc, "tmlock()");
for (i = 0; i < 100; i++) {
if ((pid = fork()) == 0) {
usleep(10000);
_exit(0);
}
if (waitpid(pid, NULL, 0) != pid)
err(1, "waitpid(%d)", pid);
}
raise(SIGSEGV);
for (i = 0; i < 2; i++)
if ((rc = pthread_join(tid[i], NULL)) != 0)
errc(1, rc, "pthread_join(%d)", i);
_exit(0);
}
int
main(void)
{
pid_t pids[PARALLEL];
time_t start;
int e, i, j, status;
start = time(NULL);
for (i = 0; i < LOOPS; i++) {
for (j = 0; j < PARALLEL; j++) {
if ((pids[j] = fork()) == 0)
test();
}
e = 0;
for (j = 0; j < PARALLEL; j++) {
if (waitpid(pids[j], &status, 0) == -1)
err(1, "waitpid(%d)", pids[j]);
e += status == 0 ? 0 : 1;
}
if (time(NULL) - start > 1200) {
fprintf(stderr, "Timed out.");
break;
}
}
return (e);
}
