memory leak with glob and mock in JIT

[YuanchengJiang]

Bug report

Bug description:

import glob
from unittest import mock
def fake_glob(pattern):
        return []
with mock.patch('glob.glob', side_effect=fake_glob):
    for _ in range(4096):
        r = glob.glob('*.txt')
import http.cookiejar

Config: --enable-experimental-jit=yes --with-address-sanitizer

ASan:

=================================================================
==1634280==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 1216 byte(s) in 1 object(s) allocated from:
    #0 0x702100c829c7 in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x5de919b956b7 in _PyObject_MallocWithType ../Include/internal/pycore_object_alloc.h:46
    #2 0x5de919b956b7 in gc_alloc ../Python/gc.c:2327
    #3 0x5de919b956b7 in _PyObject_GC_NewVar ../Python/gc.c:2369
    #4 0x5de919c73e54 in make_executor_from_uops ../Python/optimizer.c:1120
    #5 0x5de919c73e54 in uop_optimize ../Python/optimizer.c:1341
    #6 0x5de919c73e54 in _PyOptimizer_Optimize ../Python/optimizer.c:136
    #7 0x5de91963d940 in _PyEval_EvalFrameDefault ../Python/generated_cases.c.h:7656
    #8 0x5de919aff686 in _PyEval_EvalFrame ../Include/internal/pycore_ceval.h:121
    #9 0x5de919aff686 in _PyEval_Vector ../Python/ceval.c:1997
    #10 0x5de919aff686 in PyEval_EvalCode ../Python/ceval.c:880
    #11 0x5de919cbcb0e in run_eval_code_obj ../Python/pythonrun.c:1365
    #12 0x5de919cbcb0e in run_mod ../Python/pythonrun.c:1459
    #13 0x5de919cc17b7 in pyrun_file ../Python/pythonrun.c:1293
    #14 0x5de919cc17b7 in _PyRun_SimpleFileObject ../Python/pythonrun.c:521
    #15 0x5de919cc22dc in _PyRun_AnyFileObject ../Python/pythonrun.c:81
    #16 0x5de919d3ebdc in pymain_run_file_obj ../Modules/main.c:410
    #17 0x5de919d3ebdc in pymain_run_file ../Modules/main.c:429
    #18 0x5de919d3ebdc in pymain_run_python ../Modules/main.c:691
    #19 0x5de919d404be in Py_RunMain ../Modules/main.c:772
    #20 0x5de919d404be in pymain_main ../Modules/main.c:802
    #21 0x5de919d404be in Py_BytesMain ../Modules/main.c:826
    #22 0x7021008b41c9  (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 282c2c16e7b6600b0b22ea0c99010d2795752b5f)
    #23 0x7021008b428a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 282c2c16e7b6600b0b22ea0c99010d2795752b5f)
    #24 0x5de919662f54 in _start (/home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/python+0x218f54) (BuildId: 3087b1f6c97d85c049f8eaa36e3ac5b15eccf317)

SUMMARY: AddressSanitizer: 1216 byte(s) leaked in 1 allocation(s).

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

[picnixz]

This is the same issue as before. Executors are leaked.