145 lines
3.6 KiB
Bash
Executable File
145 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2015 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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# Trigger the two EDEADLK in vm/vm_pageout.c
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# OOVM deadlock seen
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# https://people.freebsd.org/~pho/stress/log/pageout.txt
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# "panic: handle_written_filepage: not started" seen:
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# https://people.freebsd.org/~pho/stress/log/pageout-2.txt
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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dir=/tmp
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odir=`pwd`
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cd $dir
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sed '1,/^EOF/d' < $odir/$0 > $dir/pageout.c
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mycc -o pageout -Wall -Wextra -g pageout.c || exit 1
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rm -f pageout.c
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cd $odir
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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 2g -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 $mntpoint
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f1=$mntpoint/f1
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dd if=/dev/zero of=$f1 bs=1m count=1k status=none
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daemon sh -c "(cd ../testcases/swap; ./swap -t 5m -i 20 -l 100 -h)" > /dev/null
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(cd /tmp; /tmp/pageout $f1) &
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sleep .2
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while kill -0 $! 2> /dev/null; do
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mksnap_ffs $mntpoint $mntpoint/.snap/stress2 &&
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rm -f $mntpoint/.snap/stress2
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done
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while pgrep -q swap; do
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pkill swap
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done
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wait
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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/pageout /tmp/pageout.core
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exit
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EOF
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#include <sys/param.h>
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#include <sys/fcntl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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const char *file;
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#define RUNTIME 600
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void
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test(void)
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{
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struct stat st;
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size_t i, len;
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time_t start;
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int error, fd, ps;
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char *p;
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ps = getpagesize();
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if ((fd = open(file, O_RDWR)) == -1)
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err(1, "open(%s)", file);
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if ((error = fstat(fd, &st)) == -1)
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err(1, "stat(%s)", file);
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len = round_page(st.st_size);
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do {
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if ((p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED,
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fd, 0)) == MAP_FAILED) {
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if (errno == ENOMEM)
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len -= ps;
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else
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err(1, "mmap");
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}
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} while (p == MAP_FAILED);
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start = time(NULL);
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/* Touch all pages of the file. */
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for (i = 0; i < len; i += ps)
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p[i] = 1;
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while (time(NULL) - start < RUNTIME)
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p[arc4random() % len] = 1;
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if (munmap(p, len) == -1)
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err(1, "unmap()");
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close(fd);
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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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if (argc != 2)
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errx(1, "Usage: %s <file>", argv[0]);
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file = argv[1];
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test();
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return (0);
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}
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