stress2: Initial import

Discussed with:	 kib

1 files changed, 95 insertions, 0 deletions

diff --git a/tools/test/stress2/misc/mmap9.sh b/tools/test/stress2/misc/mmap9.sh
new file mode 100755
index 000000000000..8608df01cb0c
--- /dev/null
+++ b/tools/test/stress2/misc/mmap9.sh
@@ -0,0 +1,95 @@
+#!/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.
+#
+
+# "panic: vm_map_protect: object 0xca6869c0 overcharged" seen:
+# http://people.freebsd.org/~pho/stress/log/mmap9.txt
+# Fixed in r265843
+
+# Test scenario by: Mark Johnston markj@
+
+. ../default.cfg
+
+dir=/tmp
+odir=`pwd`
+cd $dir
+sed '1,/^EOF/d' < $odir/$0 > $dir/mmap9.c
+# At one point during the fix development, only the thread version would panic
+mycc -o mmap9  -O2 -Wall -Wextra mmap9.c           || exit 1
+mycc -o mmap9p -O2 -Wall -Wextra mmap9.c -lpthread || exit 1
+rm -f mmap9.c
+cd $odir
+
+/tmp/mmap9
+/tmp/mmap9p
+
+rm -f /tmp/mmap9 /tmp/mmap9p
+exit
+
+EOF
+#include <sys/types.h>
+#include <sys/mman.h>
+
+#include <err.h>
+#include <string.h>
+#include <unistd.h>
+
+int
+main(void)
+{
+	size_t sz = 1;
+	char *addr;
+
+/*
+ * This is the minimum amount of C code it takes to panic the kernel.
+ * This is as submitted and thus not a complete and correct test program.
+ */
+	addr = mmap(NULL, sz, PROT_READ | PROT_WRITE, MAP_ANON,
+	    -1, 0);
+	if (addr == NULL)
+		err(1, "mmap");
+	memset(addr, 0, sz);
+
+	if (fork() != 0) {
+		if (mlock(addr, sz))
+			err(1, "mlock");
+		if (mprotect(addr, sz, PROT_READ))
+			err(1, "mprotect");
+		if (mprotect(addr, sz, PROT_READ | PROT_WRITE))
+			err(1, "mprotect");
+		if (mprotect(addr, sz, PROT_READ))
+			err(1, "mprotect");
+		if (mprotect(addr, sz, PROT_READ | PROT_WRITE))
+			err(1, "mprotect");
+	} else
+		/*
+		 * Ensure that shadow objects aren't collapsed by process exit.
+		 */
+		sleep(1);
+
+	return (0);
+}