1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2019 Dell EMC Isilon 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# acquiring duplicate lock of same type: "vnode interlock" 31# 1st vnode interlock @ /usr/src/sys/fs/nullfs/null_vnops.c:342 32# 2nd vnode interlock @ kern/vfs_default.c:1116 33# seen. 34# Fixed by r348698 35 36# Test scenario suggestion by kib@ 37 38. ../default.cfg 39[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 40 41log=/tmp/umountf13.log 42tail -F -n 0 /var/log/messages > $log & lpid=$! 43set -e 44mount | grep -q "on $mntpoint " && umount -f $mntpoint 45mount -o size=1g -t tmpfs null $mntpoint 46mp2=$mntpoint$((mdstart + 1)) 47mkdir -p $mp2 48mount | grep -q "on $mp2 " && umount -f $mp2 49 50mount -t nullfs $mntpoint $mp2 51set +e 52 53for i in `jot 10 1`; do 54 cp /bin/sleep $mp2/sleep$i 55 $mp2/sleep$i .2 56 rm $mp2/sleep$i 57done 58cp /bin/sleep $mp2/sleep 59$mp2/sleep 10 & spid=$! 60umount -f $mp2 61wait $spid 62grep -A2 "acquiring duplicate lock of same type" $log && s=1 || s=0 63kill $lpid 64rm $log 65wait 66 67umount $mntpoint 68exit $s 69