stress2: Initial import

Discussed with:	 kib

1 files changed, 104 insertions, 0 deletions

diff --git a/tools/test/stress2/misc/wire_no_page.sh b/tools/test/stress2/misc/wire_no_page.sh
new file mode 100755
index 000000000000..f79fabc59785
--- /dev/null
+++ b/tools/test/stress2/misc/wire_no_page.sh
@@ -0,0 +1,104 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2013 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.
+#
+
+# Test scenario by kib@
+
+# "panic: vm_page_set_invalid: page 0xc3dfe8c0 is busy" seen.
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+dir=/tmp
+odir=`pwd`
+cd $dir
+sed '1,/^EOF/d' < $odir/$0 > $dir/wire_no_page.c
+mycc -o wire_no_page -Wall -Wextra wire_no_page.c -lpthread || exit 1
+rm -f wire_no_page.c
+cd $odir
+
+cp /tmp/wire_no_page /tmp/wire_no_page2
+start=`date '+%s'`
+while [ $((`date '+%s'` - start)) -lt 300 ]; do
+	for i in `jot 50`; do
+		/tmp/wire_no_page /tmp/wire_no_page2 &
+	done
+	wait
+done
+
+rm -f /tmp/wire_no_page /tmp/wire_no_page2
+exit
+
+EOF
+/* $Id: wire_no_page.c,v 1.1 2013/05/17 07:50:30 kostik Exp kostik $ */
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/fcntl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <err.h>
+#include <unistd.h>
+
+int
+main(int argc, char *argv[])
+{
+	struct stat st;
+	char *p1, *p2;
+	size_t len;
+	pid_t child;
+	int error, fd;
+
+	if (argc < 2)
+		errx(1, "file name ?");
+	fd = open(argv[1], O_RDWR);
+	if (fd == -1)
+		err(1, "open %s", argv[1]);
+	error = fstat(fd, &st);
+	if (error == -1)
+		err(1, "stat");
+	len = round_page(st.st_size);
+	p1 = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+	if ((void *)p1 == MAP_FAILED)
+		err(1, "mmap");
+	error = mlock(p1, len);
+	if (error == -1)
+		err(1, "mlock");
+	p2 = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+	if ((void *)p2 == MAP_FAILED)
+		err(1, "mmap");
+	error = msync(p2, len, MS_SYNC | MS_INVALIDATE);
+	if (error == -1)
+		err(1, "msync");
+	child = fork();
+	if (child == -1)
+		err(1, "fork");
+	else if (child == 0)
+		_exit(0);
+
+	return (0);
+}