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. Variation of oovm.sh 30# https://people.freebsd.org/~pho/stress/log/oovm2.txt 31 32# Fixed by r290047 and <alc's PQ_LAUNDRY patch> 33 34# Test scenario suggestion by alc@ 35 36. ../default.cfg 37 38[ `swapinfo | wc -l` -eq 1 ] && exit 0 39maxsize=$((2 * 1024)) # Limit size due to runtime reasons 40size=$((`sysctl -n hw.physmem` / 1024 / 1024)) 41[ $size -gt $maxsize ] && size=$maxsize 42d1=$diskimage.1 43d2=$diskimage.2 44d3=$diskimage.3 45d4=$diskimage.4 46rm -f $d1 $d2 $d3 $d4 47[ `df -k $(dirname $diskimage) | tail -1 | awk '{print int($4 / 1024)}'` -lt \ 48 $size ] && printf "Need %d MB on %s.\n" $size `dirname $diskimage` && exit 49dd if=/dev/zero of=$d1 bs=1m count=$((size / 4)) status=none 50cp $d1 $d2 || exit 51cp $d1 $d3 || exit 52cp $d1 $d4 || exit 53trap "rm -f $d1 $d2 $d3 $d4" EXIT INT 54 55dir=/tmp 56odir=`pwd` 57cd $dir 58sed '1,/^EOF/d' < $odir/$0 > $dir/oovm2.c 59mycc -o oovm2 -Wall -Wextra -g oovm2.c || exit 1 60rm -f oovm2.c 61cd $odir 62 63(cd /tmp; /tmp/oovm2 $d1) & 64(cd /tmp; /tmp/oovm2 $d2) & 65(cd /tmp; /tmp/oovm2 $d3) & 66(cd /tmp; /tmp/oovm2 $d4) & 67wait 68 69rm -f /tmp/oovm2 /tmp/oovm2.core 70exit 71 72EOF 73#include <sys/param.h> 74#include <sys/fcntl.h> 75#include <sys/mman.h> 76#include <sys/stat.h> 77 78#include <err.h> 79#include <errno.h> 80#include <stdio.h> 81#include <stdlib.h> 82#include <time.h> 83#include <unistd.h> 84 85const char *file; 86 87#define RUNTIME 600 88 89void 90test(void) 91{ 92 struct stat st; 93 size_t i, olen, len; 94 time_t start; 95 int error, fd, ps; 96 char *p; 97 98 ps = getpagesize(); 99 if ((fd = open(file, O_RDWR)) == -1) 100 err(1, "open(%s)", file); 101 if ((error = fstat(fd, &st)) == -1) 102 err(1, "stat(%s)", file); 103 len = olen = round_page(st.st_size); 104 do { 105 if ((p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, 106 fd, 0)) == MAP_FAILED) { 107 if (errno == ENOMEM) 108 len -= ps; 109 else 110 err(1, "mmap"); 111 } 112 } while (p == MAP_FAILED); 113 114 start = time(NULL); 115 /* Touch all pages of the file. */ 116 for (i = 0; i < len; i += ps) 117 p[i] = 1; 118 while (time(NULL) - start < RUNTIME) 119 p[arc4random() % len] = 1; 120 121 if (munmap(p, len) == -1) 122 err(1, "unmap()"); 123 close(fd); 124} 125 126int 127main(int argc, char *argv[]) 128{ 129 if (argc != 2) 130 errx(1, "Usage: %s <file>", argv[0]); 131 file = argv[1]; 132 133 test(); 134 135 return (0); 136} 137