Index: user/pho/stress2/misc/core3.sh
===================================================================
--- user/pho/stress2/misc/core3.sh	(revision 282935)
+++ user/pho/stress2/misc/core3.sh	(revision 282936)
@@ -1,151 +1,150 @@
 #!/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.
 #
 # $FreeBSD$
 #
 
 # 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.
 
 . ../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}$part > /dev/null
-chmod 755 /mnt
 mount /dev/md${mdstart}$part $mntpoint
 mkdir $mntpoint/d
 chmod 777 $mntpoint/d
 
 su $testuser -c "/tmp/core3 $mntpoint/d" &
 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
 mount | grep -q "on $mntpoint " &&
 	    umount -f $mntpoint
 mdconfig -d -u $mdstart
 
 # tmpfs
 mount -t tmpfs tmpfs $mntpoint
 su $testuser -c "/tmp/core3 $mntpoint/d" &
 sleep 1
 
 while pgrep -q core3; do
 	[ -d $mntpoint/d ] &&
 	   umount -f $mntpoint
 done &
 while pgrep -q core3; do
 	if [ ! -d $mntpoint/d ]; then
 		mount -t tmpfs tmpfs $mntpoint
 		mkdir $mntpoint/d
 	fi
 done
 wait
 mount | grep -q "on $mntpoint " &&
     umount -f $mntpoint
 
 rm -f core3
 exit
 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)
 
 void *p;
 
 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.
 	 */
 	while (chdir(argv[1]) == -1)
 		;
 
 	raise(SIGSEGV);
 
 	_exit(0);
 }
 
 int
 main(int argc, char *argv[])
 {
 	time_t start;
 	int i;
 
 	if (argc != 2)
 		errx(1, "Usage: %s <path>", argv[0]);
 
 	start = time(NULL);
 	while (time(NULL) - start < 600) {
 		for (i = 0; i < PARALLEL; i++) {
 			if (fork() == 0)
 				test(argv);
 		}
 		for (i = 0; i < PARALLEL; i++)
 			wait(NULL);
 	}
 
 	return (0);
 }