Add a test case for kern/52771.


(jruoho)

@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.850 2020/06/25 15:01:35 jruoho Exp $
+# $NetBSD: mi,v 1.851 2020/06/25 15:41:40 jruoho Exp $
 #
 # Note: don't delete entries from here - mark them as "obsolete" instead.
 #
@@ -3995,6 +3995,7 @@
 ./usr/tests/sbin/ifconfig/Kyuafile		tests-sbin-tests	compattestfile,atf,kyua
 ./usr/tests/sbin/ifconfig/t_nonexistent		tests-sbin-tests	compattestfile,atf
 ./usr/tests/sbin/ifconfig/t_repeated_scan	tests-sbin-tests	compattestfile,atf
+./usr/tests/sbin/ifconfig/t_repeated_updown	tests-sbin-tests	compattestfile,atf
 ./usr/tests/sbin/ifconfig/t_tap			tests-sbin-tests	compattestfile,atf
 ./usr/tests/sbin/newfs				tests-sbin-tests	compattestfile,atf
 ./usr/tests/sbin/newfs/Atffile			tests-sbin-tests	compattestfile,atf

@@ -1,9 +1,9 @@
-# $NetBSD: Makefile,v 1.3 2020/06/25 14:24:46 jruoho Exp $
+# $NetBSD: Makefile,v 1.4 2020/06/25 15:41:40 jruoho Exp $
 
 .include <bsd.own.mk>
 
 TESTSDIR=	${TESTSBASE}/sbin/ifconfig
 
-TESTS_SH=	t_nonexistent t_repeated_scan t_tap
+TESTS_SH=	t_nonexistent t_repeated_scan t_repeated_updown t_tap
 
 .include <bsd.test.mk>

# $NetBSD: t_repeated_updown.sh,v 1.1 2020/06/25 15:41:40 jruoho Exp $
#
# Copyright (c) 2020 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Jukka Ruohonen.
#
# 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.

atf_test_case repeated_updown
repeated_updown_head() {
	atf_set "require.user" "root"
	atf_set "descr" "Test with ifconfig(8) that repeated " \
		"up/down does not cause a panic (PR kern/52771)"
}

repeated_updown_body() {

	# Try to avoid stalling any automated test runs.
	#
	n=35

	for i in $(ifconfig -l); do

		state="up"
		ifconfig -s $i

		if [ $? -eq 1 ]; then
			state="down"
			ifconfig $i up
			echo "Initialized $i up"
		fi

		while [ $n -gt 0 ]; do
			ifconfig $i down
			echo "Test $n: $i down"
			ifconfig $i up
			echo "Test $n: $i up"
			n=$(expr $n - 1)
		done

		ifconfig $i $state
		echo "Restored state of $i to $state"
		sleep 1
	done
}

atf_init_test_cases() {
	atf_add_test_case repeated_updown
}