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perf python: Fix memory leak in pyrf__metrics_cb

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In pyrf__metrics_cb, PyDict_SetItem does not steal the reference of the
key and value, so they need to be decref'ed after successful insertion
to avoid memory leaks.

Fixes: 47b3e95728 ("perf python: Add metrics function")
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Ian Rogers 2026-08-09 00:14:53 -07:00 committed by Namhyung Kim
parent cb45ede21d
commit 1ec13016ba
1 changed files with 2 additions and 0 deletions
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tools/perf/util/python.c
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@ -3575,6 +3575,8 @@ static int pyrf__metrics_cb(const struct pmu_metric *pm,
Py_XDECREF(dict);
return -ENOMEM;
}
Py_DECREF(key);
Py_DECREF(value);
if (!add_to_dict(dict, "MetricName", pm->metric_name) ||
!add_to_dict(dict, "PMU", pm->pmu) ||