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#!/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.
#
# Test multiple (parallel) core dumps and mount / umount.
# mount(8) stuck in "ufs" or "tmpfs".
# http://people.freebsd.org/~pho/stress/log/kostik724.txt
# Fixed by r272535.
# On i386 pgrep(1) loops. Fixed by r272566.
# "Sleeping on "pmapdi" with the following non-sleepable locks held:"
# https://people.freebsd.org/~pho/stress/log/kostik883.txt
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
. ../default.cfg
odir=`pwd`
cd /tmp
sed '1,/^EOF/d' < $odir/$0 > core3.c
mycc -o core3 -Wall -Wextra -O2 core3.c || exit 1
rm -f core3.c
cd $odir
mount | grep -q "on $mntpoint " && umount $mntpoint
[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart
mdconfig -a -t swap -s 1g -u $mdstart
bsdlabel -w md$mdstart auto
newfs $newfs_flags md${mdstart}$part > /dev/null
mount /dev/md${mdstart}$part $mntpoint
mkdir $mntpoint/d
chmod 777 $mntpoint/d
su $testuser -c "/tmp/core3 $mntpoint/d" &
pid=$!
sleep 1
while pgrep -q core3; do
[ -d $mntpoint/d ] &&
umount -f $mntpoint
done > /dev/null 2>&1 &
while pgrep -q core3; do
[ -d $mntpoint/d ] ||
mount /dev/md${mdstart}$part $mntpoint
done > /dev/null 2>&1
wait $pid
status=$?
mount | grep -q "on $mntpoint " &&
umount -f $mntpoint
mdconfig -d -u $mdstart
[ $status -ne 0 ] && exit $status
# tmpfs
mount -o size=1g -t tmpfs tmpfs $mntpoint
su $testuser -c "/tmp/core3 $mntpoint/d" &
pid=$!
sleep 1
while pgrep -q core3; do
[ -d $mntpoint/d ] &&
umount -f $mntpoint
done > /dev/null &
while pgrep -q core3; do
if [ ! -d $mntpoint/d ]; then
mount -t tmpfs tmpfs $mntpoint
mkdir $mntpoint/d
fi
done
wait $pid
status=$?
for i in `jot 5` ; do
mount | grep -q "on $mntpoint " || break
umount -f $mntpoint
sleep 1
done
rm -f /tmp/core3
exit $status
EOF
#include <sys/mman.h>
#include <sys/wait.h>
#include <err.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#define PARALLEL 64
#define SIZ (4 * 1024 * 1024)
#define TIMEDOUT 22
void *p;
static void
hand(int i __unused) { /* handler */
_exit(TIMEDOUT);
}
void
test(char *argv[])
{
size_t len;
len = SIZ;
p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
/*
* This loop caused mount to wait in "ufs".
* Adding a usleep(200) would remove the hang.
*/
signal(SIGALRM, hand);
alarm(600);
while (chdir(argv[1]) == -1)
;
raise(SIGSEGV);
_exit(0);
}
int
main(int argc, char *argv[])
{
time_t start;
int i, s, status;
if (argc != 2)
errx(1, "Usage: %s <path>", argv[0]);
status = 0;
start = time(NULL);
while (time(NULL) - start < 600 && status == 0) {
for (i = 0; i < PARALLEL; i++) {
if (fork() == 0)
test(argv);
}
for (i = 0; i < PARALLEL; i++) {
wait(&s);
if (WEXITSTATUS(s) == TIMEDOUT)
status = 1;
}
}
return (status);
}
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