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📍 /usr/src/linux-headers-6.8.0-124/tools/testing/selftests/livepatch

✏️ /usr/src/linux-headers-6.8.0-124/tools/testing/selftests/livepatch/test-livepatch.sh

✕ Tutup

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018 Joe Lawrence <joe.lawrence@redhat.com>

. $(dirname $0)/functions.sh

MOD_LIVEPATCH=test_klp_livepatch
MOD_REPLACE=test_klp_atomic_replace

setup_config

# - load a livepatch that modifies the output from /proc/cmdline and
#   verify correct behavior
# - unload the livepatch and make sure the patch was removed

start_test "basic function patching"

load_lp $MOD_LIVEPATCH

if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATCH: this has been live patched" ]] ; then
	echo -e "FAIL\n\n"
	die "livepatch kselftest(s) failed"
fi

disable_lp $MOD_LIVEPATCH
unload_lp $MOD_LIVEPATCH

if [[ "$(cat /proc/cmdline)" == "$MOD_LIVEPATCH: this has been live patched" ]] ; then
	echo -e "FAIL\n\n"
	die "livepatch kselftest(s) failed"
fi

check_result "% modprobe $MOD_LIVEPATCH
livepatch: enabling patch '$MOD_LIVEPATCH'
livepatch: '$MOD_LIVEPATCH': initializing patching transition
livepatch: '$MOD_LIVEPATCH': starting patching transition
livepatch: '$MOD_LIVEPATCH': completing patching transition
livepatch: '$MOD_LIVEPATCH': patching complete
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
livepatch: '$MOD_LIVEPATCH': starting unpatching transition
livepatch: '$MOD_LIVEPATCH': completing unpatching transition
livepatch: '$MOD_LIVEPATCH': unpatching complete
% rmmod $MOD_LIVEPATCH"

# - load a livepatch that modifies the output from /proc/cmdline and
#   verify correct behavior
# - load another livepatch and verify that both livepatches are active
# - unload the second livepatch and verify that the first is still active
# - unload the first livepatch and verify none are active

start_test "multiple livepatches"

load_lp $MOD_LIVEPATCH

grep 'live patched' /proc/cmdline > /dev/kmsg
grep 'live patched' /proc/meminfo > /dev/kmsg

load_lp $MOD_REPLACE replace=0

grep 'live patched' /proc/cmdline > /dev/kmsg
grep 'live patched' /proc/meminfo > /dev/kmsg

disable_lp $MOD_REPLACE
unload_lp $MOD_REPLACE

grep 'live patched' /proc/cmdline > /dev/kmsg
grep 'live patched' /proc/meminfo > /dev/kmsg

disable_lp $MOD_LIVEPATCH
unload_lp $MOD_LIVEPATCH

grep 'live patched' /proc/cmdline > /dev/kmsg
grep 'live patched' /proc/meminfo > /dev/kmsg

check_result "% modprobe $MOD_LIVEPATCH
livepatch: enabling patch '$MOD_LIVEPATCH'
livepatch: '$MOD_LIVEPATCH': initializing patching transition
livepatch: '$MOD_LIVEPATCH': starting patching transition
livepatch: '$MOD_LIVEPATCH': completing patching transition
livepatch: '$MOD_LIVEPATCH': patching complete
$MOD_LIVEPATCH: this has been live patched
% modprobe $MOD_REPLACE replace=0
livepatch: enabling patch '$MOD_REPLACE'
livepatch: '$MOD_REPLACE': initializing patching transition
livepatch: '$MOD_REPLACE': starting patching transition
livepatch: '$MOD_REPLACE': completing patching transition
livepatch: '$MOD_REPLACE': patching complete
$MOD_LIVEPATCH: this has been live patched
$MOD_REPLACE: this has been live patched
% echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled
livepatch: '$MOD_REPLACE': initializing unpatching transition
livepatch: '$MOD_REPLACE': starting unpatching transition
livepatch: '$MOD_REPLACE': completing unpatching transition
livepatch: '$MOD_REPLACE': unpatching complete
% rmmod $MOD_REPLACE
$MOD_LIVEPATCH: this has been live patched
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
livepatch: '$MOD_LIVEPATCH': starting unpatching transition
livepatch: '$MOD_LIVEPATCH': completing unpatching transition
livepatch: '$MOD_LIVEPATCH': unpatching complete
% rmmod $MOD_LIVEPATCH"

# - load a livepatch that modifies the output from /proc/cmdline and
#   verify correct behavior
# - load an atomic replace livepatch and verify that only the second is active
# - remove the first livepatch and verify that the atomic replace livepatch
#   is still active
# - remove the atomic replace livepatch and verify that none are active

start_test "atomic replace livepatch"

load_lp $MOD_LIVEPATCH

grep 'live patched' /proc/cmdline > /dev/kmsg
grep 'live patched' /proc/meminfo > /dev/kmsg

load_lp $MOD_REPLACE replace=1

grep 'live patched' /proc/cmdline > /dev/kmsg
grep 'live patched' /proc/meminfo > /dev/kmsg

unload_lp $MOD_LIVEPATCH

grep 'live patched' /proc/cmdline > /dev/kmsg
grep 'live patched' /proc/meminfo > /dev/kmsg

disable_lp $MOD_REPLACE
unload_lp $MOD_REPLACE

grep 'live patched' /proc/cmdline > /dev/kmsg
grep 'live patched' /proc/meminfo > /dev/kmsg

check_result "% modprobe $MOD_LIVEPATCH
livepatch: enabling patch '$MOD_LIVEPATCH'
livepatch: '$MOD_LIVEPATCH': initializing patching transition
livepatch: '$MOD_LIVEPATCH': starting patching transition
livepatch: '$MOD_LIVEPATCH': completing patching transition
livepatch: '$MOD_LIVEPATCH': patching complete
$MOD_LIVEPATCH: this has been live patched
% modprobe $MOD_REPLACE replace=1
livepatch: enabling patch '$MOD_REPLACE'
livepatch: '$MOD_REPLACE': initializing patching transition
livepatch: '$MOD_REPLACE': starting patching transition
livepatch: '$MOD_REPLACE': completing patching transition
livepatch: '$MOD_REPLACE': patching complete
$MOD_REPLACE: this has been live patched
% rmmod $MOD_LIVEPATCH
$MOD_REPLACE: this has been live patched
% echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled
livepatch: '$MOD_REPLACE': initializing unpatching transition
livepatch: '$MOD_REPLACE': starting unpatching transition
livepatch: '$MOD_REPLACE': completing unpatching transition
livepatch: '$MOD_REPLACE': unpatching complete
% rmmod $MOD_REPLACE"

exit 0

Batal

⬅ selftests 8 item

Nama	Tipe	Ukuran	Diubah	Perm	Aksi
📄 Makefile	file	246 B	10/03/24 20:38	0644	✏️ ⬇
⚙️ functions.sh	sh	8.8 KB	10/03/24 20:38	0644	✏️ ⬇
⚙️ test-callbacks.sh	sh	22.7 KB	10/03/24 20:38	0755	✏️ ⬇
⚙️ test-ftrace.sh	sh	2.3 KB	10/03/24 20:38	0755	✏️ ⬇
⚙️ test-livepatch.sh	sh	5.5 KB	10/03/24 20:38	0755	✏️ ⬇
⚙️ test-shadow-vars.sh	sh	3.7 KB	10/03/24 20:38	0755	✏️ ⬇
⚙️ test-state.sh	sh	7.4 KB	10/03/24 20:38	0755	✏️ ⬇
⚙️ test-sysfs.sh	sh	3.6 KB	10/03/24 20:38	0755	✏️ ⬇