1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3# Copyright (C) 2018 Joe Lawrence <joe.lawrence@redhat.com> 4 5. $(dirname $0)/functions.sh 6 7MOD_LIVEPATCH=test_klp_livepatch 8MOD_REPLACE=test_klp_atomic_replace 9 10setup_config 11 12 13# - load a livepatch that modifies the output from /proc/cmdline and 14# verify correct behavior 15# - unload the livepatch and make sure the patch was removed 16 17start_test "basic function patching" 18 19load_lp $MOD_LIVEPATCH 20 21if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATCH: this has been live patched" ]] ; then 22 echo -e "FAIL\n\n" 23 die "livepatch kselftest(s) failed" 24fi 25 26disable_lp $MOD_LIVEPATCH 27unload_lp $MOD_LIVEPATCH 28 29if [[ "$(cat /proc/cmdline)" == "$MOD_LIVEPATCH: this has been live patched" ]] ; then 30 echo -e "FAIL\n\n" 31 die "livepatch kselftest(s) failed" 32fi 33 34check_result "% insmod test_modules/$MOD_LIVEPATCH.ko 35livepatch: enabling patch '$MOD_LIVEPATCH' 36livepatch: '$MOD_LIVEPATCH': initializing patching transition 37livepatch: '$MOD_LIVEPATCH': starting patching transition 38livepatch: '$MOD_LIVEPATCH': completing patching transition 39livepatch: '$MOD_LIVEPATCH': patching complete 40% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled 41livepatch: '$MOD_LIVEPATCH': initializing unpatching transition 42livepatch: '$MOD_LIVEPATCH': starting unpatching transition 43livepatch: '$MOD_LIVEPATCH': completing unpatching transition 44livepatch: '$MOD_LIVEPATCH': unpatching complete 45% rmmod $MOD_LIVEPATCH" 46 47 48# - load a livepatch that modifies the output from /proc/cmdline and 49# verify correct behavior 50# - load another livepatch and verify that both livepatches are active 51# - unload the second livepatch and verify that the first is still active 52# - unload the first livepatch and verify none are active 53 54start_test "multiple livepatches" 55 56load_lp $MOD_LIVEPATCH 57 58grep 'live patched' /proc/cmdline > /dev/kmsg 59grep 'live patched' /proc/meminfo > /dev/kmsg 60 61load_lp $MOD_REPLACE replace=0 62 63grep 'live patched' /proc/cmdline > /dev/kmsg 64grep 'live patched' /proc/meminfo > /dev/kmsg 65 66disable_lp $MOD_REPLACE 67unload_lp $MOD_REPLACE 68 69grep 'live patched' /proc/cmdline > /dev/kmsg 70grep 'live patched' /proc/meminfo > /dev/kmsg 71 72disable_lp $MOD_LIVEPATCH 73unload_lp $MOD_LIVEPATCH 74 75grep 'live patched' /proc/cmdline > /dev/kmsg 76grep 'live patched' /proc/meminfo > /dev/kmsg 77 78check_result "% insmod test_modules/$MOD_LIVEPATCH.ko 79livepatch: enabling patch '$MOD_LIVEPATCH' 80livepatch: '$MOD_LIVEPATCH': initializing patching transition 81livepatch: '$MOD_LIVEPATCH': starting patching transition 82livepatch: '$MOD_LIVEPATCH': completing patching transition 83livepatch: '$MOD_LIVEPATCH': patching complete 84$MOD_LIVEPATCH: this has been live patched 85% insmod test_modules/$MOD_REPLACE.ko replace=0 86livepatch: enabling patch '$MOD_REPLACE' 87livepatch: '$MOD_REPLACE': initializing patching transition 88livepatch: '$MOD_REPLACE': starting patching transition 89livepatch: '$MOD_REPLACE': completing patching transition 90livepatch: '$MOD_REPLACE': patching complete 91$MOD_LIVEPATCH: this has been live patched 92$MOD_REPLACE: this has been live patched 93% echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled 94livepatch: '$MOD_REPLACE': initializing unpatching transition 95livepatch: '$MOD_REPLACE': starting unpatching transition 96livepatch: '$MOD_REPLACE': completing unpatching transition 97livepatch: '$MOD_REPLACE': unpatching complete 98% rmmod $MOD_REPLACE 99$MOD_LIVEPATCH: this has been live patched 100% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled 101livepatch: '$MOD_LIVEPATCH': initializing unpatching transition 102livepatch: '$MOD_LIVEPATCH': starting unpatching transition 103livepatch: '$MOD_LIVEPATCH': completing unpatching transition 104livepatch: '$MOD_LIVEPATCH': unpatching complete 105% rmmod $MOD_LIVEPATCH" 106 107 108# - load a livepatch that modifies the output from /proc/cmdline and 109# verify correct behavior 110# - load an atomic replace livepatch and verify that only the second is active 111# - remove the first livepatch and verify that the atomic replace livepatch 112# is still active 113# - remove the atomic replace livepatch and verify that none are active 114 115start_test "atomic replace livepatch" 116 117load_lp $MOD_LIVEPATCH 118 119grep 'live patched' /proc/cmdline > /dev/kmsg 120grep 'live patched' /proc/meminfo > /dev/kmsg 121 122load_lp $MOD_REPLACE replace=1 123 124grep 'live patched' /proc/cmdline > /dev/kmsg 125grep 'live patched' /proc/meminfo > /dev/kmsg 126 127unload_lp $MOD_LIVEPATCH 128 129grep 'live patched' /proc/cmdline > /dev/kmsg 130grep 'live patched' /proc/meminfo > /dev/kmsg 131 132disable_lp $MOD_REPLACE 133unload_lp $MOD_REPLACE 134 135grep 'live patched' /proc/cmdline > /dev/kmsg 136grep 'live patched' /proc/meminfo > /dev/kmsg 137 138check_result "% insmod test_modules/$MOD_LIVEPATCH.ko 139livepatch: enabling patch '$MOD_LIVEPATCH' 140livepatch: '$MOD_LIVEPATCH': initializing patching transition 141livepatch: '$MOD_LIVEPATCH': starting patching transition 142livepatch: '$MOD_LIVEPATCH': completing patching transition 143livepatch: '$MOD_LIVEPATCH': patching complete 144$MOD_LIVEPATCH: this has been live patched 145% insmod test_modules/$MOD_REPLACE.ko replace=1 146livepatch: enabling patch '$MOD_REPLACE' 147livepatch: '$MOD_REPLACE': initializing patching transition 148livepatch: '$MOD_REPLACE': starting patching transition 149livepatch: '$MOD_REPLACE': completing patching transition 150livepatch: '$MOD_REPLACE': patching complete 151$MOD_REPLACE: this has been live patched 152% rmmod $MOD_LIVEPATCH 153$MOD_REPLACE: this has been live patched 154% echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled 155livepatch: '$MOD_REPLACE': initializing unpatching transition 156livepatch: '$MOD_REPLACE': starting unpatching transition 157livepatch: '$MOD_REPLACE': completing unpatching transition 158livepatch: '$MOD_REPLACE': unpatching complete 159% rmmod $MOD_REPLACE" 160 161 162exit 0 163