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# TEST: basic function patching 14# - load a livepatch that modifies the output from /proc/cmdline and 15# verify correct behavior 16# - unload the livepatch and make sure the patch was removed 17 18echo -n "TEST: basic function patching ... " 19dmesg -C 20 21load_lp $MOD_LIVEPATCH 22 23if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATCH: this has been live patched" ]] ; then 24 echo -e "FAIL\n\n" 25 die "livepatch kselftest(s) failed" 26fi 27 28disable_lp $MOD_LIVEPATCH 29unload_lp $MOD_LIVEPATCH 30 31if [[ "$(cat /proc/cmdline)" == "$MOD_LIVEPATCH: this has been live patched" ]] ; then 32 echo -e "FAIL\n\n" 33 die "livepatch kselftest(s) failed" 34fi 35 36check_result "% modprobe $MOD_LIVEPATCH 37livepatch: enabling patch '$MOD_LIVEPATCH' 38livepatch: '$MOD_LIVEPATCH': initializing patching transition 39livepatch: '$MOD_LIVEPATCH': starting patching transition 40livepatch: '$MOD_LIVEPATCH': completing patching transition 41livepatch: '$MOD_LIVEPATCH': patching complete 42% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled 43livepatch: '$MOD_LIVEPATCH': initializing unpatching transition 44livepatch: '$MOD_LIVEPATCH': starting unpatching transition 45livepatch: '$MOD_LIVEPATCH': completing unpatching transition 46livepatch: '$MOD_LIVEPATCH': unpatching complete 47% rmmod $MOD_LIVEPATCH" 48 49 50# TEST: multiple livepatches 51# - load a livepatch that modifies the output from /proc/cmdline and 52# verify correct behavior 53# - load another livepatch and verify that both livepatches are active 54# - unload the second livepatch and verify that the first is still active 55# - unload the first livepatch and verify none are active 56 57echo -n "TEST: multiple livepatches ... " 58dmesg -C 59 60load_lp $MOD_LIVEPATCH 61 62grep 'live patched' /proc/cmdline > /dev/kmsg 63grep 'live patched' /proc/meminfo > /dev/kmsg 64 65load_lp $MOD_REPLACE replace=0 66 67grep 'live patched' /proc/cmdline > /dev/kmsg 68grep 'live patched' /proc/meminfo > /dev/kmsg 69 70disable_lp $MOD_REPLACE 71unload_lp $MOD_REPLACE 72 73grep 'live patched' /proc/cmdline > /dev/kmsg 74grep 'live patched' /proc/meminfo > /dev/kmsg 75 76disable_lp $MOD_LIVEPATCH 77unload_lp $MOD_LIVEPATCH 78 79grep 'live patched' /proc/cmdline > /dev/kmsg 80grep 'live patched' /proc/meminfo > /dev/kmsg 81 82check_result "% modprobe $MOD_LIVEPATCH 83livepatch: enabling patch '$MOD_LIVEPATCH' 84livepatch: '$MOD_LIVEPATCH': initializing patching transition 85livepatch: '$MOD_LIVEPATCH': starting patching transition 86livepatch: '$MOD_LIVEPATCH': completing patching transition 87livepatch: '$MOD_LIVEPATCH': patching complete 88$MOD_LIVEPATCH: this has been live patched 89% modprobe $MOD_REPLACE replace=0 90livepatch: enabling patch '$MOD_REPLACE' 91livepatch: '$MOD_REPLACE': initializing patching transition 92livepatch: '$MOD_REPLACE': starting patching transition 93livepatch: '$MOD_REPLACE': completing patching transition 94livepatch: '$MOD_REPLACE': patching complete 95$MOD_LIVEPATCH: this has been live patched 96$MOD_REPLACE: this has been live patched 97% echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled 98livepatch: '$MOD_REPLACE': initializing unpatching transition 99livepatch: '$MOD_REPLACE': starting unpatching transition 100livepatch: '$MOD_REPLACE': completing unpatching transition 101livepatch: '$MOD_REPLACE': unpatching complete 102% rmmod $MOD_REPLACE 103$MOD_LIVEPATCH: this has been live patched 104% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled 105livepatch: '$MOD_LIVEPATCH': initializing unpatching transition 106livepatch: '$MOD_LIVEPATCH': starting unpatching transition 107livepatch: '$MOD_LIVEPATCH': completing unpatching transition 108livepatch: '$MOD_LIVEPATCH': unpatching complete 109% rmmod $MOD_LIVEPATCH" 110 111 112# TEST: atomic replace livepatch 113# - load a livepatch that modifies the output from /proc/cmdline and 114# verify correct behavior 115# - load an atomic replace livepatch and verify that only the second is active 116# - remove the first livepatch and verify that the atomic replace livepatch 117# is still active 118# - remove the atomic replace livepatch and verify that none are active 119 120echo -n "TEST: atomic replace livepatch ... " 121dmesg -C 122 123load_lp $MOD_LIVEPATCH 124 125grep 'live patched' /proc/cmdline > /dev/kmsg 126grep 'live patched' /proc/meminfo > /dev/kmsg 127 128load_lp $MOD_REPLACE replace=1 129 130grep 'live patched' /proc/cmdline > /dev/kmsg 131grep 'live patched' /proc/meminfo > /dev/kmsg 132 133unload_lp $MOD_LIVEPATCH 134 135grep 'live patched' /proc/cmdline > /dev/kmsg 136grep 'live patched' /proc/meminfo > /dev/kmsg 137 138disable_lp $MOD_REPLACE 139unload_lp $MOD_REPLACE 140 141grep 'live patched' /proc/cmdline > /dev/kmsg 142grep 'live patched' /proc/meminfo > /dev/kmsg 143 144check_result "% modprobe $MOD_LIVEPATCH 145livepatch: enabling patch '$MOD_LIVEPATCH' 146livepatch: '$MOD_LIVEPATCH': initializing patching transition 147livepatch: '$MOD_LIVEPATCH': starting patching transition 148livepatch: '$MOD_LIVEPATCH': completing patching transition 149livepatch: '$MOD_LIVEPATCH': patching complete 150$MOD_LIVEPATCH: this has been live patched 151% modprobe $MOD_REPLACE replace=1 152livepatch: enabling patch '$MOD_REPLACE' 153livepatch: '$MOD_REPLACE': initializing patching transition 154livepatch: '$MOD_REPLACE': starting patching transition 155livepatch: '$MOD_REPLACE': completing patching transition 156livepatch: '$MOD_REPLACE': patching complete 157$MOD_REPLACE: this has been live patched 158% rmmod $MOD_LIVEPATCH 159$MOD_REPLACE: this has been live patched 160% echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled 161livepatch: '$MOD_REPLACE': initializing unpatching transition 162livepatch: '$MOD_REPLACE': starting unpatching transition 163livepatch: '$MOD_REPLACE': completing unpatching transition 164livepatch: '$MOD_REPLACE': unpatching complete 165% rmmod $MOD_REPLACE" 166 167 168exit 0 169