New submission from Charalampos Stratakis <cstra...@redhat.com>:
The coverity scan was run on python2, however the same defect seems to exist in python3 as well. Error: RESOURCE_LEAK (CWE-772): [#def69] Python-2.7.15/Objects/longobject.c:3793: alloc_fn: Storage is returned from allocation function "_PyLong_New". Python-2.7.15/Objects/longobject.c:76:5: alloc_fn: Storage is returned from allocation function "PyObject_Malloc". Python-2.7.15/Objects/obmalloc.c:982:5: alloc_fn: Storage is returned from allocation function "malloc". Python-2.7.15/Objects/obmalloc.c:982:5: return_alloc_fn: Directly returning storage allocated by "malloc". Python-2.7.15/Objects/longobject.c:76:5: identity_transfer: Passing "(PyVarObject *)PyObject_Malloc((size_t)(PyLong_Type.tp_basicsize + size * PyLong_Type.tp_itemsize + 7L & 0xfffffffffffffff8L))" as argument 1 to function "PyObject_InitVar", which returns that argument. Python-2.7.15/Objects/object.c:237:5: return_parm: Returning parameter "op". Python-2.7.15/Objects/longobject.c:76:5: return_alloc_fn: Directly returning storage allocated by "PyObject_InitVar". Python-2.7.15/Objects/longobject.c:3793: var_assign: Assigning: "z" = storage returned from "_PyLong_New(size_a)". Python-2.7.15/Objects/longobject.c:3797: var_assign: Assigning: "a" = "z". Python-2.7.15/Objects/longobject.c:3847: leaked_storage: Variable "z" going out of scope leaks the storage it points to. Python-2.7.15/Objects/longobject.c:3847: leaked_storage: Returning without freeing "a" leaks the storage that it points to. 3845| default: 3846| PyErr_BadArgument(); 3847|-> return NULL; 3848| } 3849| Error: RESOURCE_LEAK (CWE-772): [#def70] Python-2.7.15/Objects/longobject.c:3793: alloc_fn: Storage is returned from allocation function "_PyLong_New". Python-2.7.15/Objects/longobject.c:76:5: alloc_fn: Storage is returned from allocation function "PyObject_Malloc". Python-2.7.15/Objects/obmalloc.c:982:5: alloc_fn: Storage is returned from allocation function "malloc". Python-2.7.15/Objects/obmalloc.c:982:5: return_alloc_fn: Directly returning storage allocated by "malloc". Python-2.7.15/Objects/longobject.c:76:5: identity_transfer: Passing "(PyVarObject *)PyObject_Malloc((size_t)(PyLong_Type.tp_basicsize + size * PyLong_Type.tp_itemsize + 7L & 0xfffffffffffffff8L))" as argument 1 to function "PyObject_InitVar", which returns that argument. Python-2.7.15/Objects/object.c:237:5: return_parm: Returning parameter "op". Python-2.7.15/Objects/longobject.c:76:5: return_alloc_fn: Directly returning storage allocated by "PyObject_InitVar". Python-2.7.15/Objects/longobject.c:3793: var_assign: Assigning: "z" = storage returned from "_PyLong_New(size_a)". Python-2.7.15/Objects/longobject.c:3797: var_assign: Assigning: "a" = "z". Python-2.7.15/Objects/longobject.c:3820: var_assign: Assigning: "z" = "a". Python-2.7.15/Objects/longobject.c:3820: var_assign: Assigning: "b" = "z". Python-2.7.15/Objects/longobject.c:3847: leaked_storage: Variable "z" going out of scope leaks the storage it points to. Python-2.7.15/Objects/longobject.c:3847: leaked_storage: Returning without freeing "b" leaks the storage that it points to. 3845| default: 3846| PyErr_BadArgument(); 3847|-> return NULL; 3848| } 3849| ---------- components: Interpreter Core messages: 337933 nosy: cstratak priority: normal severity: normal status: open title: Coverity scan: Resource leaks in longobject.c versions: Python 2.7, Python 3.7, Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue36292> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
