1#!/bin/sh 2 3# 4# Copyright (c) 2010 Peter Holm <pho@FreeBSD.org> 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 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. 15# 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 26# SUCH DAMAGE. 27# 28 29# panic: deadlkres: possible deadlock detected for 0xc8576a00, blocked for 1801792 ticks 30 31# Scenario by kib@ 32 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34 35. ../default.cfg 36 37odir=`pwd` 38cd /tmp 39sed '1,/^EOF/d' < $odir/$0 > tmpfs6.c 40mycc -o tmpfs6 -Wall -Wextra -O2 tmpfs6.c || exit 1 41rm -f tmpfs6.c 42 43mount | grep $mntpoint | grep -q tmpfs && umount $mntpoint 44mount -t tmpfs tmpfs $mntpoint 45 46(cd $mntpoint; /tmp/tmpfs6) 47rm -f /tmp/tmpfs6 48 49while mount | grep $mntpoint | grep -q tmpfs; do 50 umount $mntpoint || sleep 1 51done 52exit 53EOF 54#include <sys/types.h> 55#include <unistd.h> 56#include <sys/stat.h> 57#include <fcntl.h> 58#include <stdio.h> 59#include <stdlib.h> 60#include <sys/mman.h> 61#include <err.h> 62 63int pagesize; 64 65#define FILESIZE (32 * 1024) 66char wbuffer[FILESIZE]; 67 68void 69test(void) 70{ 71 int fd; 72 int len; 73 void *addr; 74 char filename[80]; 75 76 snprintf(filename, sizeof(filename), "file.%07d", getpid()); 77 if ((fd = open(filename, O_CREAT | O_TRUNC | O_RDWR, S_IRWXU)) == -1) 78 err(1, "open(%s)", filename); 79 80 if ((len = write(fd, wbuffer, FILESIZE)) != FILESIZE) 81 err(1, "write()"); 82 83 fsync(fd); 84 85 if ((addr = mmap(NULL, FILESIZE, PROT_READ | PROT_WRITE , MAP_SHARED, fd, 0)) == MAP_FAILED) 86 err(1, "mmap()"); 87 88 if (lseek(fd, 0, SEEK_SET) != 0) 89 err(1, "lseek()"); 90 91 if ((len = write(fd, addr, FILESIZE)) != FILESIZE) 92 err(1, "write() 2"); 93 94 if (munmap(addr, FILESIZE) == -1) 95 err(1, "munmap()"); 96 close(fd); 97 unlink(filename); 98 99} 100 101int 102main(void) 103{ 104 int i; 105 106 for (i = 0; i < 10000; i++) 107 test(); 108 109 return (0); 110} 111