201 lines
4.6 KiB
Bash
Executable File
201 lines
4.6 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2016 EMC Corp.
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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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# A fuzz test using random file descriptors with random seeks.
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# "panic: Assertion (cookie & TMPFS_DIRCOOKIE_MASK) == cookie failed":
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# https://people.freebsd.org/~pho/stress/log/kostik922.txt
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# Fixed by r303916.
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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mount | grep -q "on $mntpoint " && umount -f $mntpoint
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mount -o size=1g -t tmpfs tmpfs $mntpoint
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RUNDIR=$mntpoint/stressX
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dir=$RUNDIR
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odir=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $odir/$0 > tmpfs16.c
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rm -f /tmp/tmpfs16
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mycc -o tmpfs16 -Wall -Wextra -O2 -g tmpfs16.c -lpthread || exit 1
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rm -f tmpfs16.c
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rm -rf $dir
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mkdir -p $dir
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chmod 777 $dir
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cd $dir
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jot 500 | xargs touch
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jot 500 | xargs chmod 666
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cd $odir
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(cd /tmp; /tmp/tmpfs16 $dir)
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e=$?
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rm -rf $dir
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umount $mntpoint
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rm -f /tmp/tmpfs16
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exit $e
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EOF
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#include <sys/param.h>
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#include <sys/resource.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fts.h>
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#include <libutil.h>
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#include <pthread.h>
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#include <pwd.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define N (128 * 1024 / (int)sizeof(u_int32_t))
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#define RUNTIME 180
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#define THREADS 2
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static int fd[900];
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static u_int32_t r[N];
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static char *args[2];
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static unsigned long
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makearg(void)
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{
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unsigned long val;
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val = arc4random();
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#if defined(__LP64__)
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val = (val << 31) | arc4random();
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val = val & 0x00007fffffffffffUL;
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#endif
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return(val);
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}
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static void *
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test(void *arg __unused)
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{
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FTS *fts;
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FTSENT *p;
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int ftsoptions, i, n;
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ftsoptions = FTS_PHYSICAL;
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for (;;) {
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for (i = 0; i < N; i++)
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r[i] = arc4random();
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if ((fts = fts_open(args, ftsoptions, NULL)) == NULL)
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err(1, "fts_open");
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i = n = 0;
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while ((p = fts_read(fts)) != NULL) {
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if (fd[i] > 0)
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close(fd[i]);
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if ((fd[i] = open(p->fts_path, O_RDWR)) == -1)
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if ((fd[i] = open(p->fts_path, O_WRONLY)) == -1)
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continue;
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if (ftruncate(fd[i], 0) != 0)
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err(1, "ftruncate");
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i++;
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i = i % nitems(fd);
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}
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if (fts_close(fts) == -1)
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err(1, "fts_close()");
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sleep(1);
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}
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return(0);
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}
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static void *
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calls(void *arg __unused)
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{
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off_t offset;
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time_t start;
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int fd2;
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start = time(NULL);
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while ((time(NULL) - start) < RUNTIME) {
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fd2 = makearg() % nitems(fd) + 3;
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offset = makearg();
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if (lseek(fd2, offset - 1, SEEK_SET) != -1) {
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if (write(fd2, "x", 1) != 1)
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if (errno != EBADF && errno != ENOSPC)
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warn("write");
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} else
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if (errno != EBADF)
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warn("lseek");
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if (fsync(fd2) == -1)
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if (errno != EBADF)
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warn("x");
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}
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return (0);
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}
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int
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main(int argc, char **argv)
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{
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struct passwd *pw;
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pthread_t rp, cp[THREADS];
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int e, i;
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if (argc != 2) {
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fprintf(stderr, "Usage: %s <dir>\n", argv[0]);
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exit(1);
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}
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args[0] = argv[1];
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args[1] = 0;
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if ((pw = getpwnam("nobody")) == NULL)
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err(1, "failed to resolve nobody");
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if (setgroups(1, &pw->pw_gid) ||
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setegid(pw->pw_gid) || setgid(pw->pw_gid) ||
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seteuid(pw->pw_uid) || setuid(pw->pw_uid))
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err(1, "Can't drop privileges to \"nobody\"");
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endpwent();
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if ((e = pthread_create(&rp, NULL, test, NULL)) != 0)
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errc(1, e, "pthread_create");
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usleep(1000);
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for (i = 0; i < THREADS; i++)
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if ((e = pthread_create(&cp[i], NULL, calls, NULL)) != 0)
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errc(1, e, "pthread_create");
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for (i = 0; i < THREADS; i++)
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pthread_join(cp[i], NULL);
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return (0);
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}
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