memory leak in `_PyJit_TryInitializeTracing`

Bug report

Bug description:

import threading
import time
import unittest
class TestCpuModeFiltering(unittest.TestCase):
        def idle_worker():
            try:
                time.sleep(5)
            except Exception:
                return
        def cpu_active_worker():
            end = time.time() + 0.1
            x = 0
            while time.time() < end:
                x += 1
        cpu_thread = threading.Thread(target=cpu_active_worker, name="cpu_active_worker", daemon=True)
        cpu_thread.start()
        self.assertIn('idle_worker', wall_mode_output)
if __name__ == "__main__":
    unittest.main()

=================================================================
==2566930==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 72000 byte(s) in 1 object(s) allocated from:
    #0 0x5ceb3b3f4c38 in malloc (/home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/python+0x35fc38) (BuildId: 1f588d55837e5ca248154490b63acc5259fe73cf)
    #1 0x5ceb3bc6ac41 in _PyJit_TryInitializeTracing /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/optimizer.c:981:70
    #2 0x5ceb3b9bd742 in _PyEval_EvalFrameDefault /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/generated_cases.c.h:7660:32
    #3 0x5ceb3b989f0a in _PyEval_EvalFrame /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Include/internal/pycore_ceval.h:121:16
    #4 0x5ceb3b989f0a in _PyEval_Vector /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/ceval.c:2111:12
    #5 0x5ceb3b6076ef in _PyObject_VectorcallTstate /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Include/internal/pycore_call.h:169:11
    #6 0x5ceb3b604b69 in method_vectorcall /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/classobject.c:73:20
    #7 0x5ceb3ba57092 in _PyObject_VectorcallTstate /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Include/internal/pycore_call.h:169:11
    #8 0x5ceb3ba57092 in context_run /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/context.c:728:29
    #9 0x5ceb3b627143 in method_vectorcall_FASTCALL_KEYWORDS /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/descrobject.c:421:24
    #10 0x5ceb3b5fa6ff in _PyObject_VectorcallTstate /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Include/internal/pycore_call.h:169:11
    #11 0x5ceb3b9cd870 in _PyEval_EvalFrameDefault /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/generated_cases.c.h:1620:35
    #12 0x5ceb3b989f0a in _PyEval_EvalFrame /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Include/internal/pycore_ceval.h:121:16
    #13 0x5ceb3b989f0a in _PyEval_Vector /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/ceval.c:2111:12
    #14 0x5ceb3b6076ef in _PyObject_VectorcallTstate /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Include/internal/pycore_call.h:169:11
    #15 0x5ceb3b604b69 in method_vectorcall /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/classobject.c:73:20
    #16 0x5ceb3b5fcea9 in _PyVectorcall_Call /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/call.c:273:16
    #17 0x5ceb3bed35fa in thread_run /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Modules/_threadmodule.c:387:21
    #18 0x5ceb3bd3ba75 in pythread_wrapper /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/thread_pthread.h:234:5
    #19 0x5ceb3b3f24ba in asan_thread_start(void*) asan_interceptors.cpp.o

SUMMARY: AddressSanitizer: 72000 byte(s) leaked in 1 allocation(s).

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Kiểm tra phần cấp phát tại Python/optimizer.c:981 trong _PyJit_TryInitializeTracing và theo dõi các đường dẫn dọn dẹp của nó. Tái hiện ví dụ về threading được cung cấp bằng LeakSanitizer, sau đó xác minh rằng phần cấp phát 72.000 byte được giải phóng và báo cáo rò rỉ không còn xuất hiện.