Date: Mon, 2 May 2016 05:27:55 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r298916 - user/pho/stress2/misc Message-ID: <201605020527.u425RtbA054311@repo.freebsd.org>
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Author: pho Date: Mon May 2 05:27:54 2016 New Revision: 298916 URL: https://svnweb.freebsd.org/changeset/base/298916 Log: Added a regression test. Sponsored by: EMC / Isilon Storage Division Added: user/pho/stress2/misc/mmap27.sh (contents, props changed) Added: user/pho/stress2/misc/mmap27.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/mmap27.sh Mon May 2 05:27:54 2016 (r298916) @@ -0,0 +1,128 @@ +#!/bin/sh + +# +# Copyright (c) 2016 EMC Corp. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# + +# 'WARNING: A device driver has set "memattr" inconsistently.' seen on +# console. +# https://people.freebsd.org/~pho/stress/log/mmap27.txt +# Fixed by r298891. + +. ../default.cfg + +odir=`pwd` +cd /tmp +sed '1,/^EOF/d' < $odir/$0 > mmap27.c +mycc -o mmap27 -Wall -Wextra -g -O0 mmap27.c || exit 1 +rm -f mmap27.c +cd $odir + +daemon sh -c '(cd ../testcases/swap; ./swap -t 2m -i 20 -l 100)' > /dev/null 2>&1 +sleep 2 +/tmp/mmap27 +while pgrep -q swap; do + pkill -9 swap +done +rm -f ./mmap27 /tmp/mmap27.0* +exit 0 + +EOF +#include <sys/param.h> +#include <sys/mman.h> +#include <sys/wait.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <unistd.h> + +int fd; + +#define ADRSPACE (256 * 1024 * 1024 ) +#define PARALLEL 64 +#define RUNTIME 120 +#define STARTADDR 0x50000000U + +static void +work(void) +{ + size_t left, len; + int i; + char *p; + volatile char val; + + if ((fd = open("/dev/mem", O_RDWR)) == -1) + err(1,"open()"); + + p = (void *)STARTADDR + trunc_page(arc4random() % ADRSPACE); + left = ADRSPACE - (size_t)p + STARTADDR; + len = trunc_page(arc4random() % left) + PAGE_SIZE; + + if ((p = mmap(p, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) == + MAP_FAILED) { + if (errno == ENOMEM) + return; + err(1, "mmap()"); + } + + for (i = 0; i < 100; i++) + val = p[arc4random() % len]; + + if (munmap(p, len) == -1) + err(1, "munmap(%p)", p); + + _exit(0); +} + +int +main(void) +{ + pid_t pids[PARALLEL]; + time_t start; + int i, n; + + start = time(NULL); + while (time(NULL) - start < RUNTIME) { + n = arc4random() % PARALLEL + 1; + for (i = 0; i < n; i++) { + if ((pids[i] = fork()) == 0) + work(); + } + + for (i = 0; i < n; i++) + if (waitpid(pids[i], NULL, 0) != pids[i]) + err(1, "waitpid(%d)", pids[i]); + } + close(fd); + + return (0); +}
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