python / python/cpython

memory leak in `cProfile.Profile`

Abierto
#141,372 3 comentarios 0 reacciones 0 asignados Ver en GitHub

Nadie ha tomado este issue todavía.

extension-modules topic-profiling type-bug
Lenguaje dominante
Python
Estrellas
77.2k
Forks
36k
Métricas de merge de PR
Métricas de PR pendientes

Descripción

Bug report

Bug description:
import cProfile
import sys

class _MonitoringStub:
    MISSING = object()

sys.monitoring = _MonitoringStub()

prof = cProfile.Profile()
=================================================================
==1718547==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 40 byte(s) in 1 object(s) allocated from:
    #0 0x6338266bcf93 in malloc (/home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/python+0x338f93) (BuildId: 8c1b704a48f26c5c3e2e3abf679137700b62a68e)
    #1 0x633826a046fe in _PyMem_DebugRawAlloc /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/obmalloc.c:2887:24
    #2 0x633826a046fe in _PyMem_DebugRawMalloc /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/obmalloc.c:2920:12
    #3 0x633826a046fe in _PyMem_DebugMalloc /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/obmalloc.c:3085:12
    #4 0x633826a4048c in _PyObject_MallocWithType /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Include/internal/pycore_object_alloc.h:46:17
    #5 0x633826a4048c in _PyType_AllocNoTrack /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/typeobject.c:2515:19
    #6 0x633826a402ed in PyType_GenericAlloc /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/typeobject.c:2546:21
    #7 0x633826a4cbed in type_call /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/typeobject.c:2459:11
    #8 0x6338268ac2d6 in _PyObject_MakeTpCall /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Objects/call.c:242:18
    #9 0x633826c46948 in _PyEval_EvalFrameDefault /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/generated_cases.c.h:1620:35
    #10 0x633826c14898 in _PyEval_EvalFrame /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Include/internal/pycore_ceval.h:121:16
    #11 0x633826c14898 in _PyEval_Vector /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/ceval.c:2005:12
    #12 0x633826c03b08 in builtin___build_class__ /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/bltinmodule.c:205:12
    #13 0x6338268ab862 in _PyObject_VectorcallTstate /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Include/internal/pycore_call.h:169:11
    #14 0x633826c46948 in _PyEval_EvalFrameDefault /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/generated_cases.c.h:1620:35
    #15 0x633826c14898 in _PyEval_EvalFrame /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Include/internal/pycore_ceval.h:121:16
    #16 0x633826c14898 in _PyEval_Vector /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/ceval.c:2005:12
    #17 0x633826c13fcb in PyEval_EvalCode /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/ceval.c:888:21
    #18 0x633826de94f3 in run_eval_code_obj /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/pythonrun.c:1365:12
    #19 0x633826de94f3 in run_mod /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/pythonrun.c:1459:19
    #20 0x633826de17bc in pyrun_file /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/pythonrun.c:1293:15
    #21 0x633826de17bc in _PyRun_SimpleFileObject /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/pythonrun.c:521:13
    #22 0x633826de0bc2 in _PyRun_AnyFileObject /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Python/pythonrun.c:81:15
    #23 0x633826e567d3 in pymain_run_file_obj /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Modules/main.c:410:15
    #24 0x633826e567d3 in pymain_run_file /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Modules/main.c:429:15
    #25 0x633826e54bc6 in pymain_run_python /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Modules/main.c:691:21
    #26 0x633826e54bc6 in Py_RunMain /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Modules/main.c:772:5
    #27 0x633826e55837 in pymain_main /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Modules/main.c:802:12
    #28 0x633826e559a3 in Py_BytesMain /home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/../Modules/main.c:826:12
    #29 0x76cd2ee241c9  (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 282c2c16e7b6600b0b22ea0c99010d2795752b5f)
    #30 0x76cd2ee2428a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 282c2c16e7b6600b0b22ea0c99010d2795752b5f)

SUMMARY: AddressSanitizer: 40 byte(s) leaked in 1 allocation(s).
CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Guía de contribución

Abrir la guía de contribución

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

Línea de trabajo

Comienza ejecutando la reproducción proporcionada de cProfile.Profile en CPython main bajo la configuración de Linux AddressSanitizer/LeakSanitizer. Rastrea la asignación reportada para cProfile.Profile y añade o actualiza una prueba de regresión para esta ruta de inicialización; se considera terminado cuando la reproducción deje de informar de la fuga de 40 bytes.

Escrito por el modelo de indexación a partir del texto del issue.

Evaluación

Stack tecnológico
python
Área
performance, tooling
Tipo de issue
Error
Dificultad
4/5
Tiempo estimado
3-5 días
Estado de actividad
Estancado
Claridad
Bastante claro
Aptitud para principiantes
45/100

Recibe los nuevos issues en tu correo

Un resumen breve de issues de GitHub para principiantes.