4 # Copyright (c) 2011 Peter Holm
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: vn_lock 0xc65b5828: zero hold count" seen.
31 # Originally found by the iknowthis test suite
32 # by Tavis Ormandy <taviso cmpxchg8b com>
35 [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
41 sed '1,/^EOF/d' < $odir/$0 > devfd.c
43 mycc -o devfd -Wall -Wextra -O2 -g devfd.c -lpthread || exit 1
46 mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
47 mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
49 mdconfig -a -t swap -s 1g -u $mdstart || exit 1
50 bsdlabel -w md$mdstart auto
51 newfs $newfs_flags md${mdstart}$part > /dev/null
52 mount /dev/md${mdstart}$part $mntpoint
55 su $testuser -c "(cd $mntpoint; /tmp/devfd)"
57 while mount | grep $mntpoint | grep -q /dev/md; do
58 umount $mntpoint || sleep 1
60 mdconfig -d -u $mdstart
69 #include <sys/param.h>
71 #include <sys/types.h>
77 thr1(void *arg __unused)
82 for (i = 0; i < 100000; i++) {
83 for (j = 0; j < 3; j++) {
86 sprintf(path, "fx%d", j);
87 fd[j] = open(path, O_RDWR | O_CREAT, 0640);
94 thr2(void *arg __unused)
99 for (i = 0; i < 100000; i++) {
100 for (j = 0; j < 3; j++) {
103 sprintf(path, "/dev/fd/%d", j);
104 if ((fd2[j] = open(path, O_RDONLY)) != -1)
105 fchflags(fd2[j], UF_NODUMP);
121 if ((r = pthread_create(&p1, NULL, thr1, NULL)) != 0)
122 errc(1, r, "pthread_create");
123 if ((r = pthread_create(&p2, NULL, thr2, NULL)) != 0)
124 errc(1, r, "pthread_create");
125 pthread_join(p1, NULL);
126 pthread_join(p2, NULL);