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Add a few livepatch modules and simple target modules that the included regression suite can run tests against: - basic livepatching (multiple patches, atomic replace) - pre/post (un)patch callbacks - shadow variable API Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Tested-by: Miroslav Benes <mbenes@suse.cz> Tested-by: Alice Ferrazzi <alice.ferrazzi@gmail.com> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
169 lines
5.6 KiB
Bash
Executable File
169 lines
5.6 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2018 Joe Lawrence <joe.lawrence@redhat.com>
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. $(dirname $0)/functions.sh
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MOD_LIVEPATCH=test_klp_livepatch
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MOD_REPLACE=test_klp_atomic_replace
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set_dynamic_debug
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# TEST: basic function patching
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# - load a livepatch that modifies the output from /proc/cmdline and
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# verify correct behavior
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# - unload the livepatch and make sure the patch was removed
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echo -n "TEST: basic function patching ... "
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dmesg -C
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load_lp $MOD_LIVEPATCH
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if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATCH: this has been live patched" ]] ; then
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echo -e "FAIL\n\n"
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die "livepatch kselftest(s) failed"
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fi
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disable_lp $MOD_LIVEPATCH
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unload_lp $MOD_LIVEPATCH
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if [[ "$(cat /proc/cmdline)" == "$MOD_LIVEPATCH: this has been live patched" ]] ; then
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echo -e "FAIL\n\n"
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die "livepatch kselftest(s) failed"
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fi
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check_result "% modprobe $MOD_LIVEPATCH
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livepatch: enabling patch '$MOD_LIVEPATCH'
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livepatch: '$MOD_LIVEPATCH': initializing patching transition
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livepatch: '$MOD_LIVEPATCH': starting patching transition
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livepatch: '$MOD_LIVEPATCH': completing patching transition
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livepatch: '$MOD_LIVEPATCH': patching complete
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% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled
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livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
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livepatch: '$MOD_LIVEPATCH': starting unpatching transition
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livepatch: '$MOD_LIVEPATCH': completing unpatching transition
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livepatch: '$MOD_LIVEPATCH': unpatching complete
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% rmmod $MOD_LIVEPATCH"
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# TEST: multiple livepatches
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# - load a livepatch that modifies the output from /proc/cmdline and
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# verify correct behavior
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# - load another livepatch and verify that both livepatches are active
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# - unload the second livepatch and verify that the first is still active
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# - unload the first livepatch and verify none are active
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echo -n "TEST: multiple livepatches ... "
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dmesg -C
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load_lp $MOD_LIVEPATCH
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grep 'live patched' /proc/cmdline > /dev/kmsg
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grep 'live patched' /proc/meminfo > /dev/kmsg
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load_lp $MOD_REPLACE replace=0
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grep 'live patched' /proc/cmdline > /dev/kmsg
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grep 'live patched' /proc/meminfo > /dev/kmsg
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disable_lp $MOD_REPLACE
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unload_lp $MOD_REPLACE
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grep 'live patched' /proc/cmdline > /dev/kmsg
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grep 'live patched' /proc/meminfo > /dev/kmsg
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disable_lp $MOD_LIVEPATCH
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unload_lp $MOD_LIVEPATCH
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grep 'live patched' /proc/cmdline > /dev/kmsg
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grep 'live patched' /proc/meminfo > /dev/kmsg
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check_result "% modprobe $MOD_LIVEPATCH
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livepatch: enabling patch '$MOD_LIVEPATCH'
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livepatch: '$MOD_LIVEPATCH': initializing patching transition
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livepatch: '$MOD_LIVEPATCH': starting patching transition
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livepatch: '$MOD_LIVEPATCH': completing patching transition
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livepatch: '$MOD_LIVEPATCH': patching complete
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$MOD_LIVEPATCH: this has been live patched
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% modprobe $MOD_REPLACE replace=0
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livepatch: enabling patch '$MOD_REPLACE'
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livepatch: '$MOD_REPLACE': initializing patching transition
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livepatch: '$MOD_REPLACE': starting patching transition
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livepatch: '$MOD_REPLACE': completing patching transition
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livepatch: '$MOD_REPLACE': patching complete
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$MOD_LIVEPATCH: this has been live patched
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$MOD_REPLACE: this has been live patched
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% echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled
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livepatch: '$MOD_REPLACE': initializing unpatching transition
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livepatch: '$MOD_REPLACE': starting unpatching transition
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livepatch: '$MOD_REPLACE': completing unpatching transition
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livepatch: '$MOD_REPLACE': unpatching complete
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% rmmod $MOD_REPLACE
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$MOD_LIVEPATCH: this has been live patched
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% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled
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livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
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livepatch: '$MOD_LIVEPATCH': starting unpatching transition
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livepatch: '$MOD_LIVEPATCH': completing unpatching transition
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livepatch: '$MOD_LIVEPATCH': unpatching complete
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% rmmod $MOD_LIVEPATCH"
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# TEST: atomic replace livepatch
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# - load a livepatch that modifies the output from /proc/cmdline and
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# verify correct behavior
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# - load an atomic replace livepatch and verify that only the second is active
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# - remove the first livepatch and verify that the atomic replace livepatch
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# is still active
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# - remove the atomic replace livepatch and verify that none are active
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echo -n "TEST: atomic replace livepatch ... "
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dmesg -C
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load_lp $MOD_LIVEPATCH
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grep 'live patched' /proc/cmdline > /dev/kmsg
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grep 'live patched' /proc/meminfo > /dev/kmsg
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load_lp $MOD_REPLACE replace=1
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grep 'live patched' /proc/cmdline > /dev/kmsg
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grep 'live patched' /proc/meminfo > /dev/kmsg
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unload_lp $MOD_LIVEPATCH
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grep 'live patched' /proc/cmdline > /dev/kmsg
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grep 'live patched' /proc/meminfo > /dev/kmsg
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disable_lp $MOD_REPLACE
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unload_lp $MOD_REPLACE
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grep 'live patched' /proc/cmdline > /dev/kmsg
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grep 'live patched' /proc/meminfo > /dev/kmsg
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check_result "% modprobe $MOD_LIVEPATCH
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livepatch: enabling patch '$MOD_LIVEPATCH'
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livepatch: '$MOD_LIVEPATCH': initializing patching transition
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livepatch: '$MOD_LIVEPATCH': starting patching transition
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livepatch: '$MOD_LIVEPATCH': completing patching transition
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livepatch: '$MOD_LIVEPATCH': patching complete
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$MOD_LIVEPATCH: this has been live patched
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% modprobe $MOD_REPLACE replace=1
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livepatch: enabling patch '$MOD_REPLACE'
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livepatch: '$MOD_REPLACE': initializing patching transition
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livepatch: '$MOD_REPLACE': starting patching transition
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livepatch: '$MOD_REPLACE': completing patching transition
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livepatch: '$MOD_REPLACE': patching complete
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$MOD_REPLACE: this has been live patched
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% rmmod $MOD_LIVEPATCH
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$MOD_REPLACE: this has been live patched
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% echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled
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livepatch: '$MOD_REPLACE': initializing unpatching transition
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livepatch: '$MOD_REPLACE': starting unpatching transition
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livepatch: '$MOD_REPLACE': completing unpatching transition
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livepatch: '$MOD_REPLACE': unpatching complete
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% rmmod $MOD_REPLACE"
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exit 0
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