[New-bugs-announce] [issue31408] Leak in typeobject.c

Stefan Krah report at bugs.python.org
Sun Sep 10 12:04:29 EDT 2017


New submission from Stefan Krah:

I traced this valgrind result down to  
2ebc5ce42a8a9e047e790aefbf9a94811569b2b6 :


==23495== 240 (72 direct, 168 indirect) bytes in 1 blocks are definitely lost in loss record 2,255 of 2,922
==23495==    at 0x4C2A9A1: malloc (vg_replace_malloc.c:299)
==23495==    by 0x42C6BC: PyMem_RawMalloc (obmalloc.c:420)
==23495==    by 0x42C6BC: _PyObject_Alloc (obmalloc.c:975)
==23495==    by 0x42C6BC: _PyObject_Malloc (obmalloc.c:985)
==23495==    by 0x448B78: _PyObject_GC_Alloc (gcmodule.c:1629)
==23495==    by 0x448B78: _PyObject_GC_Malloc (gcmodule.c:1651)
==23495==    by 0x448B78: _PyObject_GC_New (gcmodule.c:1663)
==23495==    by 0x4A85B6: new_dict (dictobject.c:584)
==23495==    by 0x4A85B6: PyDict_New (dictobject.c:624)
==23495==    by 0x4AC8F0: PyDict_Copy (dictobject.c:2510)
==23495==    by 0x4D68A7: set_names (typeobject.c:7138)
==23495==    by 0x4D68A7: type_new (typeobject.c:2756)
==23495==    by 0x4CAEC4: type_call (typeobject.c:922)
==23495==    by 0x47344B: _PyObject_FastCallDict (call.c:125)
==23495==    by 0x5497D2: builtin___build_class__ (bltinmodule.c:165)
==23495==    by 0x4725AF: _PyMethodDef_RawFastCallKeywords (call.c:653)
==23495==    by 0x4725AF: _PyCFunction_FastCallKeywords (call.c:726)
==23495==    by 0x4283E0: call_function (ceval.c:4701)
==23495==    by 0x4283E0: _PyEval_EvalFrameDefault (ceval.c:3218)
==23495==    by 0x54D3C6: PyEval_EvalFrameEx (ceval.c:549)
==23495==    by 0x54D3C6: _PyEval_EvalCodeWithName (ceval.c:4049)

----------
components: Interpreter Core
messages: 301812
nosy: eric.snow, skrah
priority: normal
severity: normal
stage: needs patch
status: open
title: Leak in typeobject.c
type: resource usage
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31408>
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