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[BUG]: memory leaks. #957

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jcelerier opened this issue Mar 3, 2025 · 0 comments
Open

[BUG]: memory leaks. #957

jcelerier opened this issue Mar 3, 2025 · 0 comments

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@jcelerier
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Problem description

When running with asan I'm seeing leaks in multiple traces:

https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140

My code is very basic and only initializes types and enums, it's entirely contained in this file:
https://github.com/celtera/libremidi/blob/master/bindings/python/pylibremidi.cpp#L185

=================================================================
==6022==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 1096 byte(s) in 1 object(s) allocated from:
    #0 0x[7](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:8)fdde40fd9c7 in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x5[8](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:9)6d36 in PyObject_Malloc (/usr/bin/python3.12+0x586d36) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b[9](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:10)987)
    #2 0x597fc8  (/usr/bin/python3.12+0x597fc8) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #3 0x7fdddef16634 in nanobind::detail::init(char const*) /home/runner/work/libremidi/libremidi/build/_deps/nanobind-src/src/nb_internals.cpp:370
    #4 0x7fdddea20edb in PyInit_pylibremidi /home/runner/work/libremidi/libremidi/bindings/python/pylibremidi.cpp:185
    #5 0x6a9630  (/usr/bin/python3.12+0x6a9630) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #6 0x6a8d81  (/usr/bin/python3.12+0x6a8d81) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #7 0x582126  (/usr/bin/python3.12+0x582126) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #8 0x5db55a in _PyEval_EvalFrameDefault (/usr/bin/python3.12+0x5db55a) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #9 0x549f56  (/usr/bin/python3.12+0x549f56) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #[10](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:11) 0x54b7e2 in PyObject_CallMethodObjArgs (/usr/bin/python3.12+0x54b7e2) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #[11](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:12) 0x5fdd74 in PyImport_ImportModuleLevelObject (/usr/bin/python3.12+0x5fdd74) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #[12](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:13) 0x5dc4db in _PyEval_EvalFrameDefault (/usr/bin/python3.12+0x5dc4db) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #[13](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:14) 0x5d58ea in PyEval_EvalCode (/usr/bin/python3.12+0x5d58ea) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #14 0x608b41  (/usr/bin/python3.12+0x608b41) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #15 0x6b4e92  (/usr/bin/python3.12+0x6b4e92) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #16 0x6b4bf9 in _PyRun_SimpleFileObject (/usr/bin/python3.12+0x6b4bf9) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #17 0x6b4a2e in _PyRun_AnyFileObject (/usr/bin/python3.12+0x6b4a2e) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #18 0x6bca94 in Py_RunMain (/usr/bin/python3.12+0x6bca94) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #19 0x6bc57c in Py_BytesMain (/usr/bin/python3.12+0x6bc57c) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #20 0x7fdde342a1c9  (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 42c84c92e6f98126b3e2230ebfdead22c235b667)
    #21 0x7fdde342a28a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 42c84c92e6f98126b3e2230ebfdead22c235b667)
    #22 0x657ce4 in _start (/usr/bin/python3.12+0x657ce4) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)

Direct leak of 1016 byte(s) in 1 object(s) allocated from:
    #0 0x7fdde40fd9c7 in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x586d36 in PyObject_Malloc (/usr/bin/python3.12+0x586d36) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #2 0x597fc8  (/usr/bin/python3.12+0x597fc8) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #3 0x7fdddef16597 in nanobind::detail::init(char const*) /home/runner/work/libremidi/libremidi/build/_deps/nanobind-src/src/nb_internals.cpp:369
    #4 0x7fdddea20edb in PyInit_pylibremidi /home/runner/work/libremidi/libremidi/bindings/python/pylibremidi.cpp:185
    #5 0x6a9630  (/usr/bin/python3.12+0x6a9630) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #6 0x6a8d81  (/usr/bin/python3.12+0x6a8d81) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #7 0x582126  (/usr/bin/python3.12+0x582126) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #8 0x5db55a in _PyEval_EvalFrameDefault (/usr/bin/python3.12+0x5db55a) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #9 0x549f56  (/usr/bin/python3.12+0x549f56) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #10 0x54b7e2 in PyObject_CallMethodObjArgs (/usr/bin/python3.12+0x54b7e2) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #11 0x5fdd74 in PyImport_ImportModuleLevelObject (/usr/bin/python3.12+0x5fdd74) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #12 0x5dc4db in _PyEval_EvalFrameDefault (/usr/bin/python3.12+0x5dc4db) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #13 0x5d58ea in PyEval_EvalCode (/usr/bin/python3.12+0x5d58ea) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #[14](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:15) 0x608b41  (/usr/bin/python3.12+0x608b41) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #15 0x5fdd74 in PyImport_ImportModuleLevelObject (/usr/bin/python3.12+0x5fdd74) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #16 0x5dc4db in _PyEval_EvalFrameDefault (/usr/bin/python3.12+0x5dc4db) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #17 0x5d58ea in PyEval_EvalCode (/usr/bin/python3.12+0x5d58ea) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #18 0x608b41  (/usr/bin/python3.12+0x608b41) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #19 0x6b4e92  (/usr/bin/python3.12+0x6b4e92) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #20 0x6b4bf9 in _PyRun_SimpleFileObject (/usr/bin/python3.12+0x6b4bf9) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #21 0x6b4a2e in _PyRun_AnyFileObject (/usr/bin/python3.12+0x6b4a2e) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #22 0x6bca94 in Py_RunMain (/usr/bin/python3.12+0x6bca94) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #23 0x6bc57c in Py_BytesMain (/usr/bin/python3.12+0x6bc57c) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #24 0x7fdde342a1c9  (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 42c84c92e6f98126b3e2230ebfdead22c235b667)
    #25 0x7fdde342a28a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 42c84c92e6f98126b3e2230ebfdead22c235b667)
    #26 0x657ce4 in _start (/usr/bin/python3.12+0x657ce4) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)

Indirect leak of 976 byte(s) in 1 object(s) allocated from:
    #0 0x7fdde40fd9c7 in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x586d36 in PyObject_Malloc (/usr/bin/python3.12+0x586d36) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #2 0x597fc8  (/usr/bin/python3.12+0x597fc8) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #3 0x7fdddef16360 in nanobind::detail::init(char const*) /home/runner/work/libremidi/libremidi/build/_deps/nanobind-src/src/nb_internals.cpp:366
    #4 0x7fdddea20edb in PyInit_pylibremidi /home/runner/work/libremidi/libremidi/bindings/python/pylibremidi.cpp:185
    #5 0x6a9630  (/usr/bin/python3.12+0x6a9630) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #6 0x6a8d81  (/usr/bin/python3.12+0x6a8d81) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #7 0x582126  (/usr/bin/python3.12+0x582126) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #8 0x5db55a in _PyEval_EvalFrameDefault (/usr/bin/python3.12+0x5db55a) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #9 0x549f56  (/usr/bin/python3.12+0x549f56) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #10 0x54b7e2 in PyObject_CallMethodObjArgs (/usr/bin/python3.12+0x54b7e2) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #11 0x5fdd74 in PyImport_ImportModuleLevelObject (/usr/bin/python3.12+0x5fdd74) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #12 0x5dc4db in _PyEval_EvalFrameDefault (/usr/bin/python3.12+0x5dc4db) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #13 0x5d58ea in PyEval_EvalCode (/usr/bin/python3.12+0x5d58ea) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #14 0x608b41  (/usr/bin/python3.12+0x608b41) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #[15](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:16) 0x6b4e92  (/usr/bin/python3.12+0x6b4e92) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #[16](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:17) 0x6b4bf9 in _PyRun_SimpleFileObject (/usr/bin/python3.12+0x6b4bf9) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #[17](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:18) 0x6b4a2e in _PyRun_AnyFileObject (/usr/bin/python3.12+0x6b4a2e) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #[18](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:19) 0x6bca94 in Py_RunMain (/usr/bin/python3.12+0x6bca94) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #19 0x6bc57c in Py_BytesMain (/usr/bin/python3.12+0x6bc57c) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)
    #[20](https://github.com/celtera/libremidi/actions/runs/13620071032/job/38068205086?pr=140#step:9:21) 0x7fdde342a1c9  (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 42c84c92e6f98126b3e2230ebfdead22c235b667)
    #21 0x7fdde342a28a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 42c84c92e6f98126b3e2230ebfdead22c235b667)
    #22 0x657ce4 in _start (/usr/bin/python3.12+0x657ce4) (BuildId: 37451b37c71cb46f8ccb27cb3cdbb7aa004b9987)

Reproducible example code
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@jcelerier