131 lines
3.2 KiB
Bash
Executable File
131 lines
3.2 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2011 Peter Holm
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# "panic: vn_lock 0xc65b5828: zero hold count" seen.
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# Originally found by the iknowthis test suite
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# by Tavis Ormandy <taviso cmpxchg8b com>
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# Fixed by r227952
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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odir=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $odir/$0 > devfd.c
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rm -f /tmp/devfd
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mycc -o devfd -Wall -Wextra -O2 -g devfd.c -lpthread || exit 1
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rm -f devfd.c
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mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
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mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
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mdconfig -a -t swap -s 1g -u $mdstart || exit 1
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bsdlabel -w md$mdstart auto
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newfs $newfs_flags md${mdstart}$part > /dev/null
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mount /dev/md${mdstart}$part $mntpoint
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chmod 777 $mntpoint
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su $testuser -c "(cd $mntpoint; /tmp/devfd)"
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while mount | grep $mntpoint | grep -q /dev/md; do
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umount $mntpoint || sleep 1
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done
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mdconfig -d -u $mdstart
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rm -f /tmp/devfd
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exit
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EOF
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#include <err.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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int fd[3], fd2[3];
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void *
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thr1(void *arg __unused)
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{
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int i, j;
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char path[80];
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for (i = 0; i < 100000; i++) {
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for (j = 0; j < 3; j++) {
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if (fd[j] != -1)
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close(fd[j]);
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sprintf(path, "fx%d", j);
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fd[j] = open(path, O_RDWR | O_CREAT, 0640);
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}
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}
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return (0);
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}
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void *
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thr2(void *arg __unused)
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{
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int i, j;
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char path[80];
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for (i = 0; i < 100000; i++) {
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for (j = 0; j < 3; j++) {
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if (fd2[j] != -1)
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close(fd2[j]);
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sprintf(path, "/dev/fd/%d", j);
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if ((fd2[j] = open(path, O_RDONLY)) != -1)
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fchflags(fd2[j], UF_NODUMP);
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}
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}
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return (0);
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}
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int
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main(void)
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{
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pthread_t p1, p2;
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int r;
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close(0);
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close(1);
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close(2);
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if ((r = pthread_create(&p1, NULL, thr1, NULL)) != 0)
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errc(1, r, "pthread_create");
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if ((r = pthread_create(&p2, NULL, thr2, NULL)) != 0)
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errc(1, r, "pthread_create");
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pthread_join(p1, NULL);
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pthread_join(p2, NULL);
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return (0);
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}
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