perf python: Add type checking for parse_events/parse_metrics

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The threads and cpus parameters in parse_events and parse_metrics
are parsed with the 'O' format specifier but blindly casted in the
C extension. If a user passes an invalid object type, this leads to
memory corruption when dereferencing the expected struct.

Add runtime PyObject_TypeCheck validations in python.c to safely
raise a TypeError if an invalid object is passed.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alice Rogers <alice.mei.rogers@gmail.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

...

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Ian Rogers 2026-06-15 18:15:41 -07:00 • committed by Namhyung Kim

parent 054d1c7717

commit c52b600dbe

1 changed files with 28 additions and 0 deletions

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tools/perf/util/python.c

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