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Memory leak in AST parsing (OSS-Fuzz #60074) · Issue #106057 · python/cpython · GitHub

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Memory leak in AST parsing (OSS-Fuzz #60074) #106057

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Memory leak in AST parsing (OSS-Fuzz #60074)#106057
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3.13bugs and security fixesinterpreter-core(Objects, Python, Grammar, and Parser dirs)performancePerformance or resource usagetype-bugAn unexpected behavior, bug, or error

Description

guidovranken
opened on Jun 24, 2023

Bug report

Reported by OSS-Fuzz (issue 60074).

Build cpython with:

CC=clang CFLAGS="-fsanitize=address" LDFLAGS="-fsanitize=address" ./configure --prefix=<prefix>
ASAN_OPTIONS=detect_leaks=0 make -j$(nproc)
ASAN_OPTIONS=detect_leaks=0 make install

(Setting ASAN_OPTIONS=detect_leaks=0 during build is necessary because memory leaks occur in the build phase itself, see #104791).

Then run the following reproducer:

import ast
ast.unparse(ast.parse(bytes([
  0x77, 0x69, 0x74, 0x68, 0x28, 0x29, 0x3a, 0x0a, 0x09, 0x2d, 0x2d, 0x2d,
  0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
  0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
  0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
  0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
  0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
  0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
  0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
  0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
  0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x66, 0x27,
  0x7b, 0x22, 0x02, 0x22, 0x7d, 0x65, 0x27, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
  0x2d, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e,
  0x7e, 0x7e, 0x2d, 0x76, 0x66, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d,
  0x2d, 0x69])))

AddressSanitizer stack trace:

==178428==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 87170 byte(s) in 64 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11

Direct leak of 29192 byte(s) in 30 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11
    #3 0x5593853e03b3 in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1449:29
    #4 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #5 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #6 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #7 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #8 0x5593853d95cd in read_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1515:9
    #9 0x5593852ec552 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:3012:19
    #10 0x559385038307 in _PyObject_VectorcallTstate /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_call.h:92:11
    #11 0x559385038307 in object_vacall /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:824:14
    #12 0x559385037c3a in PyObject_CallMethodObjArgs /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:885:24
    #13 0x5593853aa0a3 in import_find_and_load /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2767:11
    #14 0x5593853aa0a3 in PyImport_ImportModuleLevelObject /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2847:15
    #15 0x5593852d6e32 in import_name /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:2458:15
    #16 0x5593852d6e32 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:2132:19
    #17 0x5593852d2a65 in _PyEval_EvalFrame /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_ceval.h:88:16
    #18 0x5593852d2a65 in _PyEval_Vector /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:1683:12
    #19 0x5593852d2a65 in PyEval_EvalCode /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:579:21
    #20 0x5593852cccf3 in builtin_exec_impl /home/jhg/oss-fuzz-60074/cpython/Python/bltinmodule.c:1079:17
    #21 0x5593852cccf3 in builtin_exec /home/jhg/oss-fuzz-60074/cpython/Python/clinic/bltinmodule.c.h:583:20
    #22 0x559385110c96 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/jhg/oss-fuzz-60074/cpython/Objects/methodobject.c:438:24

Direct leak of 28216 byte(s) in 39 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11
    #3 0x5593853e03b3 in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1449:29
    #4 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #5 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #6 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #7 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #8 0x5593853d95cd in read_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1515:9
    #9 0x5593852ec552 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:3012:19
    #10 0x559385038307 in _PyObject_VectorcallTstate /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_call.h:92:11
    #11 0x559385038307 in object_vacall /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:824:14
    #12 0x559385037c3a in PyObject_CallMethodObjArgs /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:885:24
    #13 0x5593853aa0a3 in import_find_and_load /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2767:11
    #14 0x5593853aa0a3 in PyImport_ImportModuleLevelObject /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2847:15
    #15 0x5593852d6e32 in import_name /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:2458:15
    #16 0x5593852d6e32 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:2132:19
    #17 0x5593852d2a65 in _PyEval_EvalFrame /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_ceval.h:88:16
    #18 0x5593852d2a65 in _PyEval_Vector /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:1683:12
    #19 0x5593852d2a65 in PyEval_EvalCode /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:579:21
    #20 0x55938540cc09 in run_eval_code_obj /home/jhg/oss-fuzz-60074/cpython/Python/pythonrun.c:1727:9
    #21 0x55938540cc09 in run_mod /home/jhg/oss-fuzz-60074/cpython/Python/pythonrun.c:1748:19

Direct leak of 8720 byte(s) in 8 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11
    #3 0x5593853e03b3 in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1449:29
    #4 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #5 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #6 0x5593853d95cd in read_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1515:9
    #7 0x5593852ec552 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:3012:19
    #8 0x559385038307 in _PyObject_VectorcallTstate /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_call.h:92:11
    #9 0x559385038307 in object_vacall /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:824:14
    #10 0x559385037c3a in PyObject_CallMethodObjArgs /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:885:24
    #11 0x5593853aa0a3 in import_find_and_load /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2767:11
    #12 0x5593853aa0a3 in PyImport_ImportModuleLevelObject /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2847:15
    #13 0x5593852d6e32 in import_name /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:2458:15
    #14 0x5593852d6e32 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:2132:19
    #15 0x5593852d2a65 in _PyEval_EvalFrame /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_ceval.h:88:16
    #16 0x5593852d2a65 in _PyEval_Vector /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:1683:12
    #17 0x5593852d2a65 in PyEval_EvalCode /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:579:21
    #18 0x5593852cccf3 in builtin_exec_impl /home/jhg/oss-fuzz-60074/cpython/Python/bltinmodule.c:1079:17
    #19 0x5593852cccf3 in builtin_exec /home/jhg/oss-fuzz-60074/cpython/Python/clinic/bltinmodule.c.h:583:20
    #20 0x559385110c96 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/jhg/oss-fuzz-60074/cpython/Objects/methodobject.c:438:24

Direct leak of 2888 byte(s) in 4 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11
    #3 0x5593853e03b3 in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1449:29
    #4 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #5 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #6 0x5593853d95cd in read_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1515:9
    #7 0x5593852ec552 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:3012:19
    #8 0x559385038307 in _PyObject_VectorcallTstate /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_call.h:92:11
    #9 0x559385038307 in object_vacall /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:824:14
    #10 0x559385037c3a in PyObject_CallMethodObjArgs /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:885:24
    #11 0x5593853aa0a3 in import_find_and_load /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2767:11
    #12 0x5593853aa0a3 in PyImport_ImportModuleLevelObject /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2847:15
    #13 0x5593852d6e32 in import_name /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:2458:15
    #14 0x5593852d6e32 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:2132:19
    #15 0x5593852d2a65 in _PyEval_EvalFrame /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_ceval.h:88:16
    #16 0x5593852d2a65 in _PyEval_Vector /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:1683:12
    #17 0x5593852d2a65 in PyEval_EvalCode /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:579:21
    #18 0x55938540cc09 in run_eval_code_obj /home/jhg/oss-fuzz-60074/cpython/Python/pythonrun.c:1727:9
    #19 0x55938540cc09 in run_mod /home/jhg/oss-fuzz-60074/cpython/Python/pythonrun.c:1748:19

Direct leak of 2816 byte(s) in 1 object(s) allocated from:
    #0 0x559384eecfc6 in __interceptor_realloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3fc6) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x55938509d353 in list_resize /home/jhg/oss-fuzz-60074/cpython/Objects/listobject.c:82:30
    #2 0x55938509d353 in list_extend /home/jhg/oss-fuzz-60074/cpython/Objects/listobject.c:892:18

Direct leak of 2048 byte(s) in 1 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11
    #3 0x559385132dcf in set_add_key /home/jhg/oss-fuzz-60074/cpython/Objects/setobject.c:354:12
    #4 0x559385132dcf in set_update_internal /home/jhg/oss-fuzz-60074/cpython/Objects/setobject.c:913:13
    #5 0x55938513c0ff in make_new_set /home/jhg/oss-fuzz-60074/cpython/Objects/setobject.c:967:13
    #6 0x55938513c0ff in make_new_frozenset /home/jhg/oss-fuzz-60074/cpython/Objects/setobject.c:999:12
    #7 0x5593852d2a65 in _PyEval_EvalFrame /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_ceval.h:88:16
    #8 0x5593852d2a65 in _PyEval_Vector /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:1683:12
    #9 0x5593852d2a65 in PyEval_EvalCode /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:579:21
    #10 0x5593852cccf3 in builtin_exec_impl /home/jhg/oss-fuzz-60074/cpython/Python/bltinmodule.c:1079:17
    #11 0x5593852cccf3 in builtin_exec /home/jhg/oss-fuzz-60074/cpython/Python/clinic/bltinmodule.c.h:583:20
    #12 0x559385110c96 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/jhg/oss-fuzz-60074/cpython/Objects/methodobject.c:438:24

Indirect leak of 300119 byte(s) in 316 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11

Indirect leak of 9623 byte(s) in 8 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11
    #3 0x559385151d0f in type_call /home/jhg/oss-fuzz-60074/cpython/Objects/typeobject.c:1663:11

Indirect leak of 6357 byte(s) in 6 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11
    #3 0x5593853e0131 in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1413:25
    #4 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #5 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #6 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #7 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #8 0x5593853d95cd in read_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1515:9
    #9 0x5593852ec552 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:3012:19
    #10 0x559385038307 in _PyObject_VectorcallTstate /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_call.h:92:11
    #11 0x559385038307 in object_vacall /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:824:14
    #12 0x559385037c3a in PyObject_CallMethodObjArgs /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:885:24
    #13 0x5593853aa0a3 in import_find_and_load /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2767:11
    #14 0x5593853aa0a3 in PyImport_ImportModuleLevelObject /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2847:15
    #15 0x5593852d6e32 in import_name /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:2458:15
    #16 0x5593852d6e32 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:2132:19
    #17 0x5593852d2a65 in _PyEval_EvalFrame /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_ceval.h:88:16
    #18 0x5593852d2a65 in _PyEval_Vector /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:1683:12
    #19 0x5593852d2a65 in PyEval_EvalCode /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:579:21
    #20 0x5593852cccf3 in builtin_exec_impl /home/jhg/oss-fuzz-60074/cpython/Python/bltinmodule.c:1079:17
    #21 0x5593852cccf3 in builtin_exec /home/jhg/oss-fuzz-60074/cpython/Python/clinic/bltinmodule.c.h:583:20
    #22 0x559385110c96 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/jhg/oss-fuzz-60074/cpython/Objects/methodobject.c:438:24

Indirect leak of 2195 byte(s) in 2 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11
    #3 0x5593853e0131 in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1413:25
    #4 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #5 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #6 0x5593853d95cd in read_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1515:9
    #7 0x5593852ec552 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:3012:19
    #8 0x559385038307 in _PyObject_VectorcallTstate /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_call.h:92:11
    #9 0x559385038307 in object_vacall /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:824:14
    #10 0x559385037c3a in PyObject_CallMethodObjArgs /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:885:24
    #11 0x5593853aa0a3 in import_find_and_load /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2767:11
    #12 0x5593853aa0a3 in PyImport_ImportModuleLevelObject /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2847:15
    #13 0x5593852d6e32 in import_name /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:2458:15
    #14 0x5593852d6e32 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:2132:19
    #15 0x5593852d2a65 in _PyEval_EvalFrame /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_ceval.h:88:16
    #16 0x5593852d2a65 in _PyEval_Vector /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:1683:12
    #17 0x5593852d2a65 in PyEval_EvalCode /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:579:21
    #18 0x5593852cccf3 in builtin_exec_impl /home/jhg/oss-fuzz-60074/cpython/Python/bltinmodule.c:1079:17
    #19 0x5593852cccf3 in builtin_exec /home/jhg/oss-fuzz-60074/cpython/Python/clinic/bltinmodule.c.h:583:20
    #20 0x559385110c96 in cfunction_vectorcall_FASTCALL_KEYWORDS /home/jhg/oss-fuzz-60074/cpython/Objects/methodobject.c:438:24

Indirect leak of 1103 byte(s) in 2 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11
    #3 0x5593853e0131 in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1413:25
    #4 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #5 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #6 0x5593853df60c in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1220:18
    #7 0x5593853e007e in r_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1389:22
    #8 0x5593853d95cd in read_object /home/jhg/oss-fuzz-60074/cpython/Python/marshal.c:1515:9
    #9 0x5593852ec552 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:3012:19
    #10 0x559385038307 in _PyObject_VectorcallTstate /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_call.h:92:11
    #11 0x559385038307 in object_vacall /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:824:14
    #12 0x559385037c3a in PyObject_CallMethodObjArgs /home/jhg/oss-fuzz-60074/cpython/Objects/call.c:885:24
    #13 0x5593853aa0a3 in import_find_and_load /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2767:11
    #14 0x5593853aa0a3 in PyImport_ImportModuleLevelObject /home/jhg/oss-fuzz-60074/cpython/Python/import.c:2847:15
    #15 0x5593852d6e32 in import_name /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:2458:15
    #16 0x5593852d6e32 in _PyEval_EvalFrameDefault /home/jhg/oss-fuzz-60074/cpython/Python/bytecodes.c:2132:19
    #17 0x5593852d2a65 in _PyEval_EvalFrame /home/jhg/oss-fuzz-60074/cpython/./Include/internal/pycore_ceval.h:88:16
    #18 0x5593852d2a65 in _PyEval_Vector /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:1683:12
    #19 0x5593852d2a65 in PyEval_EvalCode /home/jhg/oss-fuzz-60074/cpython/Python/ceval.c:579:21
    #20 0x55938540cc09 in run_eval_code_obj /home/jhg/oss-fuzz-60074/cpython/Python/pythonrun.c:1727:9
    #21 0x55938540cc09 in run_mod /home/jhg/oss-fuzz-60074/cpython/Python/pythonrun.c:1748:19

Indirect leak of 690 byte(s) in 1 object(s) allocated from:
    #0 0x559384eecb9e in __interceptor_malloc (/home/jhg/oss-fuzz-60074/cpython-install/bin/python3.13+0x2e3b9e) (BuildId: ea5a593a9a755c28cb82600d1aa85c16131c0c4f)
    #1 0x559385123406 in PyMem_RawMalloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:662:12
    #2 0x559385123406 in _PyObject_Malloc /home/jhg/oss-fuzz-60074/cpython/Objects/obmalloc.c:1569:11
    #3 0x559385170810 in tp_new_wrapper /home/jhg/oss-fuzz-60074/cpython/Objects/typeobject.c:8325:11

SUMMARY: AddressSanitizer: 481137 byte(s) leaked in 482 allocation(s).

Bug was introduced in 04492cb @markshannon

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Linux x64, latest cpython main branch checkout.

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3.13bugs and security fixesinterpreter-core(Objects, Python, Grammar, and Parser dirs)performancePerformance or resource usagetype-bugAn unexpected behavior, bug, or error

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