1*8a272653SPeter Holm#!/bin/sh 2*8a272653SPeter Holm 3*8a272653SPeter Holm# 4*8a272653SPeter Holm# Copyright (c) 2011 Peter Holm 5*8a272653SPeter Holm# All rights reserved. 6*8a272653SPeter Holm# 7*8a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 8*8a272653SPeter Holm# modification, are permitted provided that the following conditions 9*8a272653SPeter Holm# are met: 10*8a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 11*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 12*8a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 13*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 14*8a272653SPeter Holm# documentation and/or other materials provided with the distribution. 15*8a272653SPeter Holm# 16*8a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17*8a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*8a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*8a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20*8a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*8a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*8a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*8a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*8a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*8a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*8a272653SPeter Holm# SUCH DAMAGE. 27*8a272653SPeter Holm# 28*8a272653SPeter Holm 29*8a272653SPeter Holm# "panic: vn_lock 0xc65b5828: zero hold count" seen. 30*8a272653SPeter Holm 31*8a272653SPeter Holm# Originally found by the iknowthis test suite 32*8a272653SPeter Holm# by Tavis Ormandy <taviso cmpxchg8b com> 33*8a272653SPeter Holm# Fixed by r227952 34*8a272653SPeter Holm 35*8a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 36*8a272653SPeter Holm 37*8a272653SPeter Holm. ../default.cfg 38*8a272653SPeter Holm 39*8a272653SPeter Holmodir=`pwd` 40*8a272653SPeter Holmcd /tmp 41*8a272653SPeter Holmsed '1,/^EOF/d' < $odir/$0 > devfd.c 42*8a272653SPeter Holmrm -f /tmp/devfd 43*8a272653SPeter Holmmycc -o devfd -Wall -Wextra -O2 -g devfd.c -lpthread || exit 1 44*8a272653SPeter Holmrm -f devfd.c 45*8a272653SPeter Holm 46*8a272653SPeter Holmmount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 47*8a272653SPeter Holmmdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 48*8a272653SPeter Holm 49*8a272653SPeter Holmmdconfig -a -t swap -s 1g -u $mdstart || exit 1 50*8a272653SPeter Holmbsdlabel -w md$mdstart auto 51*8a272653SPeter Holmnewfs $newfs_flags md${mdstart}$part > /dev/null 52*8a272653SPeter Holmmount /dev/md${mdstart}$part $mntpoint 53*8a272653SPeter Holmchmod 777 $mntpoint 54*8a272653SPeter Holm 55*8a272653SPeter Holmsu $testuser -c "(cd $mntpoint; /tmp/devfd)" 56*8a272653SPeter Holm 57*8a272653SPeter Holmwhile mount | grep $mntpoint | grep -q /dev/md; do 58*8a272653SPeter Holm umount $mntpoint || sleep 1 59*8a272653SPeter Holmdone 60*8a272653SPeter Holmmdconfig -d -u $mdstart 61*8a272653SPeter Holmrm -f /tmp/devfd 62*8a272653SPeter Holmexit 63*8a272653SPeter HolmEOF 64*8a272653SPeter Holm#include <err.h> 65*8a272653SPeter Holm#include <fcntl.h> 66*8a272653SPeter Holm#include <pthread.h> 67*8a272653SPeter Holm#include <stdio.h> 68*8a272653SPeter Holm#include <stdlib.h> 69*8a272653SPeter Holm#include <sys/param.h> 70*8a272653SPeter Holm#include <sys/stat.h> 71*8a272653SPeter Holm#include <sys/types.h> 72*8a272653SPeter Holm#include <unistd.h> 73*8a272653SPeter Holm 74*8a272653SPeter Holmint fd[3], fd2[3]; 75*8a272653SPeter Holm 76*8a272653SPeter Holmvoid * 77*8a272653SPeter Holmthr1(void *arg __unused) 78*8a272653SPeter Holm{ 79*8a272653SPeter Holm int i, j; 80*8a272653SPeter Holm char path[80]; 81*8a272653SPeter Holm 82*8a272653SPeter Holm for (i = 0; i < 100000; i++) { 83*8a272653SPeter Holm for (j = 0; j < 3; j++) { 84*8a272653SPeter Holm if (fd[j] != -1) 85*8a272653SPeter Holm close(fd[j]); 86*8a272653SPeter Holm sprintf(path, "fx%d", j); 87*8a272653SPeter Holm fd[j] = open(path, O_RDWR | O_CREAT, 0640); 88*8a272653SPeter Holm } 89*8a272653SPeter Holm } 90*8a272653SPeter Holm return (0); 91*8a272653SPeter Holm} 92*8a272653SPeter Holm 93*8a272653SPeter Holmvoid * 94*8a272653SPeter Holmthr2(void *arg __unused) 95*8a272653SPeter Holm{ 96*8a272653SPeter Holm int i, j; 97*8a272653SPeter Holm char path[80]; 98*8a272653SPeter Holm 99*8a272653SPeter Holm for (i = 0; i < 100000; i++) { 100*8a272653SPeter Holm for (j = 0; j < 3; j++) { 101*8a272653SPeter Holm if (fd2[j] != -1) 102*8a272653SPeter Holm close(fd2[j]); 103*8a272653SPeter Holm sprintf(path, "/dev/fd/%d", j); 104*8a272653SPeter Holm if ((fd2[j] = open(path, O_RDONLY)) != -1) 105*8a272653SPeter Holm fchflags(fd2[j], UF_NODUMP); 106*8a272653SPeter Holm } 107*8a272653SPeter Holm 108*8a272653SPeter Holm } 109*8a272653SPeter Holm return (0); 110*8a272653SPeter Holm} 111*8a272653SPeter Holm 112*8a272653SPeter Holmint 113*8a272653SPeter Holmmain(void) 114*8a272653SPeter Holm{ 115*8a272653SPeter Holm pthread_t p1, p2; 116*8a272653SPeter Holm int r; 117*8a272653SPeter Holm 118*8a272653SPeter Holm close(0); 119*8a272653SPeter Holm close(1); 120*8a272653SPeter Holm close(2); 121*8a272653SPeter Holm if ((r = pthread_create(&p1, NULL, thr1, NULL)) != 0) 122*8a272653SPeter Holm errc(1, r, "pthread_create"); 123*8a272653SPeter Holm if ((r = pthread_create(&p2, NULL, thr2, NULL)) != 0) 124*8a272653SPeter Holm errc(1, r, "pthread_create"); 125*8a272653SPeter Holm pthread_join(p1, NULL); 126*8a272653SPeter Holm pthread_join(p2, NULL); 127*8a272653SPeter Holm 128*8a272653SPeter Holm return (0); 129*8a272653SPeter Holm} 130*8a272653SPeter Holm 131