svn commit: r354370 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Wed Nov  6 06:38:34 2019
New Revision: 354370
URL: https://svnweb.freebsd.org/changeset/base/354370

Log:
  Added a regression test.

Added:
  user/pho/stress2/misc/umount4.sh   (contents, props changed)

Added: user/pho/stress2/misc/umount4.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/umount4.sh	Wed Nov  6 06:38:34 2019	(r354370)
@@ -0,0 +1,73 @@
+#!/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.
+#
+# $FreeBSD$
+#
+
+# A "(cd /mnt; umount /mnt)" test scenario, which triggered random memory
+# corruptions.
+
+# Page fault seen: https://people.freebsd.org/~pho/stress/log/kostik1230.txt
+# First seen with r354204
+# Initial fix by r354367
+
+. ../default.cfg
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+mount | grep -q "on $mntpoint " && umount $mntpoint
+mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
+
+mdconfig -a -t swap -s 1g -u $mdstart || exit 1
+
+for opt in "-U" "-j"; do
+	echo "newfs $opt md$mdstart"
+	newfs $opt md$mdstart > /dev/null
+	mount /dev/md$mdstart $mntpoint || exit 1
+	pids=""
+	for i in `jot 3`; do
+		while true; do
+			dd if=/dev/zero of=$mntpoint/$i bs=1m \
+			    count=`jot -r 1 1 10` status=none
+		done &
+		pids="$pids $!"
+	done
+
+	start=`date +%s`
+	while [ $((`date +%s` - start)) -lt 60 ]; do
+		(cd $mntpoint; umount $mntpoint)
+	done > /dev/null 2>&1
+	kill $pids
+	wait
+
+	while true; do
+		umount $mntpoint && break
+		sleep 1
+	done
+done
+mdconfig -d -u $mdstart
+exit 0