Date: Fri, 26 Jul 2013 09:11:39 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r253669 - user/pho/stress2/misc Message-ID: <201307260911.r6Q9Bd1v061608@svn.freebsd.org>
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Author: pho Date: Fri Jul 26 09:11:38 2013 New Revision: 253669 URL: http://svnweb.freebsd.org/changeset/base/253669 Log: Added an old vnode leak regression test. Sponsored by: EMC / Isilon storage division Added: user/pho/stress2/misc/vnodes.sh (contents, props changed) Added: user/pho/stress2/misc/vnodes.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/vnodes.sh Fri Jul 26 09:11:38 2013 (r253669) @@ -0,0 +1,83 @@ +#!/bin/sh + +# +# Copyright (c) 2012 Peter Holm <pho@FreeBSD.org> +# 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. +# +# $FreeBSD$ +# + +# Demonstrate vnode leak + +# Test scenario by Petr Salinger <Petr Salinger seznam cz> + +. ../default.cfg + +here=`pwd` +cd /tmp +sed '1,/^EOF/d' < $here/$0 > vnodes.c +cc -o vnodes -Wall -O2 vnodes.c +rm -f vnodes.c + +old=`sysctl vfs.numvnodes | tail -1 | sed 's/.*: //'` +/tmp/vnodes +new=`sysctl vfs.numvnodes | tail -1 | sed 's/.*: //'` +[ $((new - old)) -gt 100 ] && echo "FAIL vnode leak" + +rm -f /tmp/vnodes +exit 0 +EOF +#include <sys/types.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/wait.h> +#include <unistd.h> + + +char dname[]= "/dev/ptyrX"; + +void leak(void) +{ + int i, fd; + + if (fork() == 0) { + for (i = '0'; i < '9'; i ++) { + dname[9] = i; + fd = open(dname, O_RDWR); + } + exit(0); + } + wait(NULL); +} + +int main() +{ + int i; + + for (i = 0 ;i < 100000; i++) { + leak(); + } + return 0; +}
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