1#!/bin/sh 2 3# 4# Copyright (c) 2015 EMC Corp. 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# Out of VM deadlock seen. Introduced by r285808. 30# https://people.freebsd.org/~pho/stress/log/oovm.txt 31# https://people.freebsd.org/~pho/stress/log/oovm-2.txt 32 33# Fixed by r290047 and <alc's PQ_LAUNDRY patch> 34 35# Test scenario suggestion by alc@ 36 37. ../default.cfg 38 39[ `swapinfo | wc -l` -eq 1 ] && exit 0 40maxsize=$((2 * 1024)) # Limit size due to runtime reasons 41size=$((`sysctl -n hw.physmem` / 1024 / 1024)) 42[ $size -gt $((4 * 1024)) ] && 43 echo "RAM should be capped to 4GB for this test." 44[ $size -gt $maxsize ] && size=$maxsize 45need=$((size * 2)) 46d1=$diskimage.1 47d2=$diskimage.2 48rm -f $d1 $d2 49[ `df -k $(dirname $diskimage) | tail -1 | awk '{print int($4 / 1024)}'` -lt \ 50 $need ] && printf "Need %d MB on %s.\n" $need `dirname $diskimage` && exit 51dd if=/dev/zero of=$d1 bs=1m count=$size status=none 52cp $d1 $d2 || exit 53trap "rm -f $d1 $d2" EXIT INT 54 55dir=/tmp 56odir=`pwd` 57cd $dir 58sed '1,/^EOF/d' < $odir/$0 > $dir/oovm.c 59mycc -o oovm -Wall -Wextra -g oovm.c || exit 1 60rm -f oovm.c 61cd $odir 62 63(cd /tmp; /tmp/oovm $d1) & 64(cd /tmp; /tmp/oovm $d2) & 65wait 66 67rm -f /tmp/oovm /tmp/oovm.core 68exit 69 70EOF 71#include <sys/param.h> 72#include <sys/fcntl.h> 73#include <sys/mman.h> 74#include <sys/stat.h> 75 76#include <err.h> 77#include <errno.h> 78#include <stdio.h> 79#include <stdlib.h> 80#include <time.h> 81#include <unistd.h> 82 83const char *file; 84 85#define RUNTIME 600 86 87void 88test(void) 89{ 90 struct stat st; 91 size_t i, olen, len; 92 time_t start; 93 int error, fd, ps; 94 char *p; 95 96 ps = getpagesize(); 97 if ((fd = open(file, O_RDWR)) == -1) 98 err(1, "open(%s)", file); 99 if ((error = fstat(fd, &st)) == -1) 100 err(1, "stat(%s)", file); 101 len = olen = round_page(st.st_size); 102 do { 103 if ((p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, 104 fd, 0)) == MAP_FAILED) { 105 if (errno == ENOMEM) 106 len -= ps; 107 else 108 err(1, "mmap"); 109 } 110 } while (p == MAP_FAILED); 111 112 start = time(NULL); 113 /* Touch all pages of the file. */ 114 for (i = 0; i < len; i += ps) 115 p[i] = 1; 116 while (time(NULL) - start < RUNTIME) 117 p[arc4random() % len] = 1; 118 119 if (munmap(p, len) == -1) 120 err(1, "unmap()"); 121 close(fd); 122} 123 124int 125main(int argc, char *argv[]) 126{ 127 if (argc != 2) 128 errx(1, "Usage: %s <file>", argv[0]); 129 file = argv[1]; 130 131 test(); 132 133 return (0); 134} 135