aslr.sh

#/bin/sh

#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2019 Dell EMC Isilon
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
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#    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
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ELF32/64 address map randomization test.

# "panic: page 0xfffff8103971b840 has queue state" seen in WiP kernel code.
# https://people.freebsd.org/~pho/stress/log/mark087.txt

old32=`sysctl -ni kern.elf32.aslr.enable`
old64=`sysctl -ni kern.elf64.aslr.enable`

if [ -n "$old32" ]; then
	sysctl kern.elf32.aslr.enable=$((1 - old32))
	./su.sh
	sysctl kern.elf32.aslr.enable=$old32
elif [ -n "$old64" ]; then
	sysctl kern.elf64.aslr.enable=$((1 - old64))
	./su.sh
	sysctl kern.elf64.aslr.enable=$old64
fi