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| author | Filipe Xavier <felipeaggger@gmail.com> | 2025-03-24 19:50:19 -0300 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2025-03-25 14:52:32 +0100 |
| commit | 474eecc882aefb53241af09ac54139bf6f700555 (patch) | |
| tree | 3a9bd7a9f81169514e61f12e40fb751e55cb6bc0 | |
| parent | 2ca7cd80207e458b06c11c2b0de8d975a48f51cc (diff) | |
selftests: livepatch: test if ftrace can trace a livepatched function
This new test makes sure that ftrace can trace a
function that was introduced by a livepatch.
Signed-off-by: Filipe Xavier <felipeaggger@gmail.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Acked-by: Joe Lawrence <joe.lawrence@redhat.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Tested-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20250324-ftrace-sftest-livepatch-v3-2-d9d7cc386c75@gmail.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
| -rwxr-xr-x | tools/testing/selftests/livepatch/test-ftrace.sh | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tools/testing/selftests/livepatch/test-ftrace.sh b/tools/testing/selftests/livepatch/test-ftrace.sh index fe14f248913a..094176f1a46a 100755 --- a/tools/testing/selftests/livepatch/test-ftrace.sh +++ b/tools/testing/selftests/livepatch/test-ftrace.sh @@ -61,4 +61,38 @@ livepatch: '$MOD_LIVEPATCH': unpatching complete % rmmod $MOD_LIVEPATCH" +# - verify livepatch can load +# - check if traces have a patched function +# - reset trace and unload livepatch + +start_test "trace livepatched function and check that the live patch remains in effect" + +FUNCTION_NAME="livepatch_cmdline_proc_show" + +load_lp $MOD_LIVEPATCH +trace_function "$FUNCTION_NAME" + +if [[ "$(cat /proc/cmdline)" == "$MOD_LIVEPATCH: this has been live patched" ]] ; then + log "livepatch: ok" +fi + +check_traced_functions "$FUNCTION_NAME" + +disable_lp $MOD_LIVEPATCH +unload_lp $MOD_LIVEPATCH + +check_result "% insmod test_modules/$MOD_LIVEPATCH.ko +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 +livepatch: ok +% echo 0 > $SYSFS_KLP_DIR/$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" + exit 0 |