4 # Copyright (c) 2015 EMC Corp.
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
10 # 1. Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12 # 2. Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in the
14 # documentation and/or other materials provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 # "panic: vm_page_unwire: page 0xc36cafbc's wire count is zero" seen.
30 # https://people.freebsd.org/~pho/stress/log/mmap24.txt
31 # Test scenario by trasz@.
34 [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
41 sed '1,/^EOF/d' < $odir/$0 > $dir/mmap24.c
42 mycc -o mmap24 -Wall -Wextra mmap24.c || exit 1
46 [ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart
47 mdconfig -a -t swap -s 1g -u $mdstart || exit 1
48 bsdlabel -w md$mdstart auto
49 newfs $newfs_flags md${mdstart}$part > /dev/null
50 mount /dev/md${mdstart}$part $mntpoint
53 cp /tmp/mmap24 $mntpoint
54 (cd $mntpoint; ./mmap24) &
61 while mount | grep "on $mntpoint " | grep -q /dev/md; do
62 umount $mntpoint || sleep 1
64 mdconfig -d -u $mdstart
70 #include <sys/fcntl.h>
72 #include <sys/param.h>
74 #include <sys/types.h>
92 error = mlockall(MCL_CURRENT | MCL_FUTURE);