| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (C) 2018 Joe Lawrence <joe.lawrence@redhat.com> |
| |
| . $(dirname $0)/functions.sh |
| |
| MOD_LIVEPATCH1=test_klp_livepatch |
| MOD_LIVEPATCH2=test_klp_syscall |
| MOD_LIVEPATCH3=test_klp_callbacks_demo |
| 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 $MOD_LIVEPATCH1 |
| |
| if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATCH1: this has been live patched" ]] ; then |
| echo -e "FAIL\n\n" |
| die "livepatch kselftest(s) failed" |
| fi |
| |
| disable_lp $MOD_LIVEPATCH1 |
| unload_lp $MOD_LIVEPATCH1 |
| |
| if [[ "$(cat /proc/cmdline)" == "$MOD_LIVEPATCH1: this has been live patched" ]] ; then |
| echo -e "FAIL\n\n" |
| die "livepatch kselftest(s) failed" |
| fi |
| |
| check_result "% insmod test_modules/$MOD_LIVEPATCH1.ko |
| livepatch: enabling patch '$MOD_LIVEPATCH1' |
| livepatch: '$MOD_LIVEPATCH1': initializing patching transition |
| livepatch: '$MOD_LIVEPATCH1': starting patching transition |
| livepatch: '$MOD_LIVEPATCH1': completing patching transition |
| livepatch: '$MOD_LIVEPATCH1': patching complete |
| % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH1/enabled |
| livepatch: '$MOD_LIVEPATCH1': initializing unpatching transition |
| livepatch: '$MOD_LIVEPATCH1': starting unpatching transition |
| livepatch: '$MOD_LIVEPATCH1': completing unpatching transition |
| livepatch: '$MOD_LIVEPATCH1': unpatching complete |
| % rmmod $MOD_LIVEPATCH1" |
| |
| |
| # - 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_LIVEPATCH1 |
| |
| 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_LIVEPATCH1 |
| unload_lp $MOD_LIVEPATCH1 |
| |
| grep 'live patched' /proc/cmdline > /dev/kmsg |
| grep 'live patched' /proc/meminfo > /dev/kmsg |
| |
| check_result "% insmod test_modules/$MOD_LIVEPATCH1.ko |
| livepatch: enabling patch '$MOD_LIVEPATCH1' |
| livepatch: '$MOD_LIVEPATCH1': initializing patching transition |
| livepatch: '$MOD_LIVEPATCH1': starting patching transition |
| livepatch: '$MOD_LIVEPATCH1': completing patching transition |
| livepatch: '$MOD_LIVEPATCH1': patching complete |
| $MOD_LIVEPATCH1: this has been live patched |
| % insmod test_modules/$MOD_REPLACE.ko 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_LIVEPATCH1: 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 |
| $MOD_LIVEPATCH1: this has been live patched |
| % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH1/enabled |
| livepatch: '$MOD_LIVEPATCH1': initializing unpatching transition |
| livepatch: '$MOD_LIVEPATCH1': starting unpatching transition |
| livepatch: '$MOD_LIVEPATCH1': completing unpatching transition |
| livepatch: '$MOD_LIVEPATCH1': unpatching complete |
| % rmmod $MOD_LIVEPATCH1" |
| |
| |
| # - load a livepatch that modifies the output from /proc/cmdline and |
| # verify correct behavior |
| # - load two additional livepatches and check the number of livepatch modules |
| # applied |
| # - load an atomic replace livepatch and check that the other three modules were |
| # disabled |
| # - remove all livepatches besides the atomic replace one 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_LIVEPATCH1 |
| |
| grep 'live patched' /proc/cmdline > /dev/kmsg |
| grep 'live patched' /proc/meminfo > /dev/kmsg |
| |
| for mod in $MOD_LIVEPATCH2 $MOD_LIVEPATCH3; do |
| load_lp "$mod" |
| done |
| |
| mods=(/sys/kernel/livepatch/*) |
| nmods=${#mods[@]} |
| if [ "$nmods" -ne 3 ]; then |
| die "Expecting three modules listed, found $nmods" |
| fi |
| |
| load_lp $MOD_REPLACE replace=1 |
| |
| grep 'live patched' /proc/cmdline > /dev/kmsg |
| grep 'live patched' /proc/meminfo > /dev/kmsg |
| |
| loop_until 'mods=(/sys/kernel/livepatch/*); nmods=${#mods[@]}; [[ "$nmods" -eq 1 ]]' || |
| die "Expecting only one moduled listed, found $nmods" |
| |
| # These modules were disabled by the atomic replace |
| for mod in $MOD_LIVEPATCH3 $MOD_LIVEPATCH2 $MOD_LIVEPATCH1; do |
| unload_lp "$mod" |
| done |
| |
| grep 'live patched' /proc/cmdline > /dev/kmsg |
| grep 'live patched' /proc/meminfo > /dev/kmsg |
| |
| disable_lp $MOD_REPLACE |
| unload_lp $MOD_REPLACE |
| |
| grep 'live patched' /proc/cmdline > /dev/kmsg |
| grep 'live patched' /proc/meminfo > /dev/kmsg |
| |
| check_result "% insmod test_modules/$MOD_LIVEPATCH1.ko |
| livepatch: enabling patch '$MOD_LIVEPATCH1' |
| livepatch: '$MOD_LIVEPATCH1': initializing patching transition |
| livepatch: '$MOD_LIVEPATCH1': starting patching transition |
| livepatch: '$MOD_LIVEPATCH1': completing patching transition |
| livepatch: '$MOD_LIVEPATCH1': patching complete |
| $MOD_LIVEPATCH1: this has been live patched |
| % insmod test_modules/$MOD_LIVEPATCH2.ko |
| livepatch: enabling patch '$MOD_LIVEPATCH2' |
| livepatch: '$MOD_LIVEPATCH2': initializing patching transition |
| livepatch: '$MOD_LIVEPATCH2': starting patching transition |
| livepatch: '$MOD_LIVEPATCH2': completing patching transition |
| livepatch: '$MOD_LIVEPATCH2': patching complete |
| % insmod test_modules/$MOD_LIVEPATCH3.ko |
| livepatch: enabling patch '$MOD_LIVEPATCH3' |
| livepatch: '$MOD_LIVEPATCH3': initializing patching transition |
| $MOD_LIVEPATCH3: pre_patch_callback: vmlinux |
| livepatch: '$MOD_LIVEPATCH3': starting patching transition |
| livepatch: '$MOD_LIVEPATCH3': completing patching transition |
| $MOD_LIVEPATCH3: post_patch_callback: vmlinux |
| livepatch: '$MOD_LIVEPATCH3': patching complete |
| % insmod test_modules/$MOD_REPLACE.ko replace=1 |
| livepatch: enabling patch '$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_LIVEPATCH3 |
| % rmmod $MOD_LIVEPATCH2 |
| % rmmod $MOD_LIVEPATCH1 |
| $MOD_REPLACE: this has been live patched |
| % echo 0 > /sys/kernel/livepatch/$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 |
