svn commit: r228067 - projects/stress2/misc

[Peter Holm]

Author: pho
Date: Mon Nov 28 14:20:12 2011
New Revision: 228067
URL: http://svn.freebsd.org/changeset/base/228067

Log:
  Added regression test for r227952.

Added:
  projects/stress2/misc/devfd.sh   (contents, props changed)

Added: projects/stress2/misc/devfd.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ projects/stress2/misc/devfd.sh	Mon Nov 28 14:20:12 2011	(r228067)
@@ -0,0 +1,131 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2011 Peter Holm
+# 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.
+#
+# $FreeBSD$
+#
+
+# "panic: vn_lock 0xc65b5828: zero hold count" seen.
+
+# Originally found by the iknowthis test suite
+# by Tavis Ormandy <taviso  cmpxchg8b com>
+# Fixed by r227952
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+odir=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $odir/$0 > devfd.c
+rm -f /tmp/devfd
+cc -o devfd -Wall -Wextra -O2 -g devfd.c -lpthread || exit 1
+rm -f devfd.c
+
+mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
+mdconfig -l | grep -q md$mdstart &&  mdconfig -d -u $mdstart
+
+mdconfig -a -t swap -s 1g -u $mdstart || exit 1
+bsdlabel -w md$mdstart auto
+newfs -U md${mdstart}$part > /dev/null
+mount /dev/md${mdstart}$part $mntpoint
+chmod 777 $mntpoint
+
+su $testuser -c "(cd $mntpoint; /tmp/devfd)"
+
+while mount | grep $mntpoint | grep -q /dev/md; do
+	umount $mntpoint || sleep 1
+done
+mdconfig -d -u $mdstart
+rm -f /tmp/devfd
+exit
+EOF
+#include <err.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int fd[3], fd2[3];
+
+void *
+thr1(void *arg __unused)
+{
+	int i, j;
+	char path[80];
+
+	for (i = 0; i < 100000; i++) {
+		for (j = 0; j < 3; j++) {
+			if (fd[j] != -1)
+				close(fd[j]);
+			sprintf(path, "fx%d", j);
+			fd[j] = open(path, O_RDWR | O_CREAT, 0640);
+		}
+	}
+	return (0);
+}
+
+void *
+thr2(void *arg __unused)
+{
+	int i, j;
+	char path[80];
+
+	for (i = 0; i < 100000; i++) {
+		for (j = 0; j < 3; j++) {
+			if (fd2[j] != -1)
+				close(fd2[j]);
+			sprintf(path, "/dev/fd/%d", j);
+			if ((fd2[j] = open(path, O_RDONLY)) != -1)
+				fchflags(fd2[j], UF_NODUMP);
+		}
+
+	}
+	return (0);
+}
+
+int
+main(void)
+{
+	pthread_t p1, p2;
+
+	close(0);
+	close(1);
+	close(2);
+	if (pthread_create(&p1, NULL, thr1, NULL) != 0)
+		err(1, "pthread_create");
+	if (pthread_create(&p2, NULL, thr2, NULL) != 0)
+		err(1, "pthread_create");
+	pthread_join(p1, NULL);
+	pthread_join(p2, NULL);
+
+	return (0);
+}
+