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original_kernel/tools/testing/selftests/livepatch/test-sysfs.sh

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selftests/livepatch: add sysfs test Add a test for livepatch sysfs entries. Signed-off-by: Song Liu <song@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20220902205208.3117798-3-song@kernel.org
2022-09-03 04:52:08 +08:00
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2022 Song Liu <song@kernel.org>
. $(dirname $0)/functions.sh
MOD_LIVEPATCH=test_klp_livepatch
setup_config
# - load a livepatch and verifies the sysfs entries work as expected
start_test "sysfs test"
load_lp $MOD_LIVEPATCH
check_sysfs_rights "$MOD_LIVEPATCH" "" "drwxr-xr-x"
check_sysfs_rights "$MOD_LIVEPATCH" "enabled" "-rw-r--r--"
check_sysfs_value "$MOD_LIVEPATCH" "enabled" "1"
check_sysfs_rights "$MOD_LIVEPATCH" "force" "--w-------"
check_sysfs_rights "$MOD_LIVEPATCH" "transition" "-r--r--r--"
check_sysfs_value "$MOD_LIVEPATCH" "transition" "0"
check_sysfs_rights "$MOD_LIVEPATCH" "vmlinux/patched" "-r--r--r--"
check_sysfs_value "$MOD_LIVEPATCH" "vmlinux/patched" "1"
disable_lp $MOD_LIVEPATCH
unload_lp $MOD_LIVEPATCH
livepatch: Move tests from lib/livepatch to selftests/livepatch The modules are being moved from lib/livepatch to tools/testing/selftests/livepatch/test_modules. This code moving will allow writing more complex tests, like for example an userspace C code that will call a livepatched kernel function. The modules are now built as out-of-tree modules, but being part of the kernel source means they will be maintained. Another advantage of the code moving is to be able to easily change, debug and rebuild the tests by running make on the selftests/livepatch directory, which is not currently possible since the modules on lib/livepatch are build and installed using the "modules" target. The current approach also keeps the ability to execute the tests manually by executing the scripts inside selftests/livepatch directory, as it's currently supported. If the modules are modified, they needed to be rebuilt before running the scripts though. The modules are built before running the selftests when using the kselftest invocations: make kselftest TARGETS=livepatch or make -C tools/testing/selftests/livepatch run_tests Having the modules being built as out-of-modules requires changing the currently used 'modprobe' by 'insmod' and adapt the test scripts that check for the kernel message buffer. Now it is possible to only compile the modules by running: make -C tools/testing/selftests/livepatch/ This way the test modules and other test program can be built in order to be packaged if so desired. As there aren't any modules being built on lib/livepatch, remove the TEST_LIVEPATCH Kconfig and it's references. Note: "make gen_tar" packages the pre-built binaries into the tarball. It means that it will store the test modules pre-built for the kernel running on the build host. Note that these modules need not binary compatible with the kernel built from the same sources. But the same is true for other packaged selftest binaries. The entire kernel sources are needed for rebuilding the selftests on another system. Reviewed-by: Joe Lawrence <joe.lawrence@redhat.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com> Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2024-01-13 01:43:51 +08:00
check_result "% insmod test_modules/$MOD_LIVEPATCH.ko
selftests/livepatch: add sysfs test Add a test for livepatch sysfs entries. Signed-off-by: Song Liu <song@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20220902205208.3117798-3-song@kernel.org
2022-09-03 04:52:08 +08:00
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"
start_test "sysfs test object/patched"
MOD_LIVEPATCH=test_klp_callbacks_demo
MOD_TARGET=test_klp_callbacks_mod
load_lp $MOD_LIVEPATCH
# check the "patch" file changes as target module loads/unloads
check_sysfs_value "$MOD_LIVEPATCH" "$MOD_TARGET/patched" "0"
load_mod $MOD_TARGET
check_sysfs_value "$MOD_LIVEPATCH" "$MOD_TARGET/patched" "1"
unload_mod $MOD_TARGET
check_sysfs_value "$MOD_LIVEPATCH" "$MOD_TARGET/patched" "0"
disable_lp $MOD_LIVEPATCH
unload_lp $MOD_LIVEPATCH
livepatch: Move tests from lib/livepatch to selftests/livepatch The modules are being moved from lib/livepatch to tools/testing/selftests/livepatch/test_modules. This code moving will allow writing more complex tests, like for example an userspace C code that will call a livepatched kernel function. The modules are now built as out-of-tree modules, but being part of the kernel source means they will be maintained. Another advantage of the code moving is to be able to easily change, debug and rebuild the tests by running make on the selftests/livepatch directory, which is not currently possible since the modules on lib/livepatch are build and installed using the "modules" target. The current approach also keeps the ability to execute the tests manually by executing the scripts inside selftests/livepatch directory, as it's currently supported. If the modules are modified, they needed to be rebuilt before running the scripts though. The modules are built before running the selftests when using the kselftest invocations: make kselftest TARGETS=livepatch or make -C tools/testing/selftests/livepatch run_tests Having the modules being built as out-of-modules requires changing the currently used 'modprobe' by 'insmod' and adapt the test scripts that check for the kernel message buffer. Now it is possible to only compile the modules by running: make -C tools/testing/selftests/livepatch/ This way the test modules and other test program can be built in order to be packaged if so desired. As there aren't any modules being built on lib/livepatch, remove the TEST_LIVEPATCH Kconfig and it's references. Note: "make gen_tar" packages the pre-built binaries into the tarball. It means that it will store the test modules pre-built for the kernel running on the build host. Note that these modules need not binary compatible with the kernel built from the same sources. But the same is true for other packaged selftest binaries. The entire kernel sources are needed for rebuilding the selftests on another system. Reviewed-by: Joe Lawrence <joe.lawrence@redhat.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com> Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2024-01-13 01:43:51 +08:00
check_result "% insmod test_modules/test_klp_callbacks_demo.ko
selftests/livepatch: add sysfs test Add a test for livepatch sysfs entries. Signed-off-by: Song Liu <song@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20220902205208.3117798-3-song@kernel.org
2022-09-03 04:52:08 +08:00
livepatch: enabling patch 'test_klp_callbacks_demo'
livepatch: 'test_klp_callbacks_demo': initializing patching transition
test_klp_callbacks_demo: pre_patch_callback: vmlinux
livepatch: 'test_klp_callbacks_demo': starting patching transition
livepatch: 'test_klp_callbacks_demo': completing patching transition
test_klp_callbacks_demo: post_patch_callback: vmlinux
livepatch: 'test_klp_callbacks_demo': patching complete
livepatch: Move tests from lib/livepatch to selftests/livepatch The modules are being moved from lib/livepatch to tools/testing/selftests/livepatch/test_modules. This code moving will allow writing more complex tests, like for example an userspace C code that will call a livepatched kernel function. The modules are now built as out-of-tree modules, but being part of the kernel source means they will be maintained. Another advantage of the code moving is to be able to easily change, debug and rebuild the tests by running make on the selftests/livepatch directory, which is not currently possible since the modules on lib/livepatch are build and installed using the "modules" target. The current approach also keeps the ability to execute the tests manually by executing the scripts inside selftests/livepatch directory, as it's currently supported. If the modules are modified, they needed to be rebuilt before running the scripts though. The modules are built before running the selftests when using the kselftest invocations: make kselftest TARGETS=livepatch or make -C tools/testing/selftests/livepatch run_tests Having the modules being built as out-of-modules requires changing the currently used 'modprobe' by 'insmod' and adapt the test scripts that check for the kernel message buffer. Now it is possible to only compile the modules by running: make -C tools/testing/selftests/livepatch/ This way the test modules and other test program can be built in order to be packaged if so desired. As there aren't any modules being built on lib/livepatch, remove the TEST_LIVEPATCH Kconfig and it's references. Note: "make gen_tar" packages the pre-built binaries into the tarball. It means that it will store the test modules pre-built for the kernel running on the build host. Note that these modules need not binary compatible with the kernel built from the same sources. But the same is true for other packaged selftest binaries. The entire kernel sources are needed for rebuilding the selftests on another system. Reviewed-by: Joe Lawrence <joe.lawrence@redhat.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com> Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2024-01-13 01:43:51 +08:00
% insmod test_modules/test_klp_callbacks_mod.ko
selftests/livepatch: add sysfs test Add a test for livepatch sysfs entries. Signed-off-by: Song Liu <song@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20220902205208.3117798-3-song@kernel.org
2022-09-03 04:52:08 +08:00
livepatch: applying patch 'test_klp_callbacks_demo' to loading module 'test_klp_callbacks_mod'
test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init
test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_COMING] Full formed, running module_init
test_klp_callbacks_mod: test_klp_callbacks_mod_init
% rmmod test_klp_callbacks_mod
test_klp_callbacks_mod: test_klp_callbacks_mod_exit
test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away
livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod'
test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away
% echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled
livepatch: 'test_klp_callbacks_demo': initializing unpatching transition
test_klp_callbacks_demo: pre_unpatch_callback: vmlinux
livepatch: 'test_klp_callbacks_demo': starting unpatching transition
livepatch: 'test_klp_callbacks_demo': completing unpatching transition
test_klp_callbacks_demo: post_unpatch_callback: vmlinux
livepatch: 'test_klp_callbacks_demo': unpatching complete
% rmmod test_klp_callbacks_demo"
exit 0