8a272653d9
Discussed with: kib
184 lines
4.5 KiB
Bash
Executable File
184 lines
4.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2010 Peter Holm <pho@FreeBSD.org>
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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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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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# Variation of suj5.sh
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# "panic: indir_trunc: Index out of range -2 parent -2061 lbn -2060" seen
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. ../default.cfg
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here=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $here/$0 > suj6.c
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mycc -o suj6 -Wall -O2 suj6.c
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rm -f suj6.c
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cd $here
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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 $mdstart
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bsdlabel -w md$mdstart auto
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newfs -j 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/suj6" > /dev/null
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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/suj6
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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 <stdio.h>
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#include <stdlib.h>
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#include <sys/mount.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#define PARALLEL 10
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static int
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random_int(int mi, int ma)
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{
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return (arc4random() % (ma - mi + 1) + mi);
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}
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static int64_t
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df(void)
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{
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char path[MAXPATHLEN+1];
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struct statfs buf;
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if (getcwd(path, sizeof(path)) == NULL)
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err(1, "getcwd()");
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if (statfs(path, &buf) < 0)
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err(1, "statfs(%s)", path);
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printf("Free space on %s: %jd Mb\n", path, buf.f_bavail * buf.f_bsize / 1024 / 1024);
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return (buf.f_bavail * buf.f_bsize);
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}
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static void
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test(int size)
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{
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int buf[1024], index, to;
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#ifdef TEST
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int i;
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#endif
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int fd;
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char file[128];
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sprintf(file,"p%05d", getpid());
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if ((fd = creat(file, 0660)) == -1)
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err(1, "creat(%s)", file);
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to = sizeof(buf);
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index = 0;
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while (index < size) {
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if (index + to > size)
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to = size - index;
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#ifdef TEST
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for (i = 0; i < to; i++)
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buf[i] = index + i;
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#endif
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index += to;
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if (write(fd, buf, to) != to)
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err(1, "write(%s), %s:%d", file, __FILE__, __LINE__);
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}
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if (close(fd) == -1)
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err(1, "close(%s), %s:%d", file, __FILE__, __LINE__);
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#if 0
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if ((fd = open(file, O_RDONLY)) == -1)
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err(1, "open(%s), %s:%d", file, __FILE__, __LINE__);
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index = 0;
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while (index < size) {
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if (index + to > size)
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to = size - index;
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if (read(fd, buf, to) != to)
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err(1, "rw read. %s.%d", __FILE__, __LINE__);
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#ifdef TEST
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for (i = 0; i < to; i++) {
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if (buf[i] != index + i) {
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fprintf(stderr,
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"%s, pid %d: expected %d @ %d, got %d\n",
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getprogname(), getpid(), index+i, index+i,
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buf[i]);
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exit(EXIT_FAILURE);
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}
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}
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#endif
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index += to;
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}
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if (close(fd) == -1)
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err(1, "close(%s), %s:%d", file, __FILE__, __LINE__);
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#endif
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if (unlink(file) == -1)
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err(1, "unlink(%s), %s:%d", file, __FILE__, __LINE__);
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exit(0);
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}
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int
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main()
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{
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int i, j, pct;
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int size; /* in k */
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int64_t bl;
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bl = df();
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if (bl > (int64_t)INT_MAX * PARALLEL)
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bl = (int64_t)INT_MAX * PARALLEL;
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size = bl / PARALLEL / 1024;
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pct = random_int(1, 50);
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size = size / 100 * pct + 1;
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if (random_int(1, 100) <= 50)
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size = 34 * 1024; /* Known good deadlock value */
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printf("Max file size: %d Mb\n", size / 1024);
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for (i = 0; i < 100; i++) {
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for (j = 0; j < PARALLEL; j++) {
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if (fork() == 0) {
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test(random_int(1, size) * 1024);
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}
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}
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for (j = 0; j < PARALLEL; j++)
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wait(NULL);
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}
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return (0);
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}
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