svn commit: r279521 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Mon Mar  2 14:58:04 2015
New Revision: 279521
URL: https://svnweb.freebsd.org/changeset/base/279521

Log:
  Added a regression test.
  
  Sponsored by:	 EMC / Isilon storage division

Added:
  user/pho/stress2/misc/core4.sh   (contents, props changed)

Added: user/pho/stress2/misc/core4.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/core4.sh	Mon Mar  2 14:58:04 2015	(r279521)
@@ -0,0 +1,97 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2014 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.
+#
+# $FreeBSD$
+#
+
+# Test multiple (parallel) core dumps and umount -f
+
+# "panic: vn_finished_write: neg cnt" seen.
+# http://people.freebsd.org/~pho/core4.sh
+# Fixed in r274501
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+mntpoint=/mnt
+mdstart=5
+part=a
+newfs_flags="-U"
+testuser=stress
+[ -r ../default.cfg ] && . ../default.cfg
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > core4.c
+mycc -o core4 -Wall -Wextra -O0 -g core4.c || exit 1
+rm -f core4.c
+
+mount | grep -q "$mntpoint" && umount $mntpoint
+mdconfig -l | grep -q $mdstart &&  mdconfig -d -u $mdstart
+
+mdconfig -a -t swap -s 2g -u $mdstart
+bsdlabel -w md${mdstart} auto
+
+newfs $newfs_flags md${mdstart}$part > /dev/null
+for i in `jot 20`; do
+	mount /dev/md${mdstart}$part $mntpoint
+	chmod 777 $mntpoint
+	su $testuser -c "(cd $mntpoint; /tmp/core4)" &
+	su $testuser -c "(cd $mntpoint; /tmp/core4)" &
+	su $testuser -c "(cd $mntpoint; /tmp/core4)" &
+	sleep .5
+	sleep .`jot -r 1 1 9`
+	umount -f $mntpoint
+	wait
+done 2>/dev/null
+
+while mount | grep -q "on $mntpoint "; do
+	umount $mntpoint || sleep 1
+done
+mdconfig -d -u $mdstart
+rm -f /tmp/core4
+exit 0
+EOF
+#include <sys/mman.h>
+#include <sys/param.h>
+
+#include <err.h>
+#include <signal.h>
+#include <unistd.h>
+
+#define SIZ (1024L * 1024 * 1024)
+
+int
+main(void)
+{
+	void *p;
+
+	p = mmap(NULL, SIZ, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
+	usleep(1000);
+	raise(SIGSEGV);
+
+	return (0);
+}