diff --git a/tools/test/stress2/misc/badcode3.sh b/tools/test/stress2/misc/badcode3.sh
index e0a10d0074a4..61dce1cb82c3 100755
--- a/tools/test/stress2/misc/badcode3.sh
+++ b/tools/test/stress2/misc/badcode3.sh
@@ -1,57 +1,62 @@
 #!/bin/sh
 
 #
 # SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 #
 # Copyright (c) 2019 Peter Holm
 #
 # 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.
 #
 
 [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
 
 # No problems seen.
 
 . ../default.cfg
 
 mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint
 [ -c /dev/md$mdstart ] &&  mdconfig -d -u $mdstart
 mdconfig -a -t swap -s 1g -u $mdstart
 newfs $newfs_flags md$mdstart > /dev/null
 mount /dev/md$mdstart $mntpoint
 chmod 777 $mntpoint
+export badcodeLOAD=100
+export RUNDIR=$mntpoint/stressX
+mkdir -p $RUNDIR
+chmod 0777 $RUNDIR
 
 here=`pwd`
 cd $mntpoint
 (cd $here/../testcases/swap; ./swap -t 5m -i 20) &
 sleep 2
 while pgrep -q swap; do
-	timeout 1m limits -c 0 $here/../testcases/badcode/badcode -t 1m -i 20
+	su $testuser -c \
+	    "timeout 1m limits -c 0 $here/../testcases/badcode/badcode -t 1m -i 20"
 done
 wait
 cd $here
 while mount | grep "on $mntpoint " | grep -q /dev/md; do
 	umount $mntpoint || sleep 1
 done
 mdconfig -d -u $mdstart
 exit