segfault when trying to construct AvroProducer

[stefansjs]

Description

I get a SIGSEGV crashing my entire application when trying to construct an AvroProducer. I'm unclear if there is a problem with my configuration or not, but a segfault is not really acceptable. Is it possible to use cysignals sig_on() and sig_off to convert this to an exception?

How to reproduce

The following code produces the output below

    avro_schema_options = getConfigProperties('avro.*', section=section_name)
    # If there's any avro schema options provided, assume they're all provided and setup the avro producer
    default_key_schema = avro.load(PERF_KEY_SCHEMA_PATH)
    default_value_schema = avro.load(PERF_VALUE_SCHEMA_PATH)

    avro_producer_params = {key[len('avro.'):]: value for key, value in avro_schema_options.items()}

    self.logger.debug("Setting up AvroProducer with %r", avro_producer_params)

    try:
        producer = avro.AvroProducer(avro_producer_params,
                                     default_key_schema=default_key_schema,
                                     default_value_schema=default_value_schema)
    except:
        self.logger.warning("Failed to configure avro producer", exc_info=True)
    else:
        return producer

Setting up AvroProducer with {u'bootstrap.servers': u'gpu-test4.sf.smle.co:9092', u'schema.registry.url': u'http://gpu-test4.sf.smle.co:8081', u'queue.buffering.max.ms': 10}

0 signals.so 0x0000000103f4537b print_backtrace + 65
1 signals.so 0x0000000103f48c90 sigdie + 60
2 signals.so 0x0000000103f48c14 cysigs_signal_handler + 351
3 libsystem_platform.dylib 0x00007fff614efb5d sigtramp + 29
4 ??? 0x00007ffeeeaa0ac0 0x0 + 140732902542016
5 cimpl.so 0x0000000103f5bb1d Producer__len_ + 13
6 Python 0x00007fff3f31ae28 _PyBuiltin_Init + 8463
7 Python 0x00007fff3f31ef74 PyEval_EvalFrameEx + 4753
8 Python 0x00007fff3f31dab2 PyEval_EvalCodeEx + 1555
9 Python 0x00007fff3f323d4c _PyEval_SliceIndex + 490
10 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
11 Python 0x00007fff3f31dab2 PyEval_EvalCodeEx + 1555
12 Python 0x00007fff3f323d4c _PyEval_SliceIndex + 490
13 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
14 Python 0x00007fff3f323cee _PyEval_SliceIndex + 396
15 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
16 Python 0x00007fff3f323cee _PyEval_SliceIndex + 396
17 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
18 Python 0x00007fff3f323cee _PyEval_SliceIndex + 396
19 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
20 Python 0x00007fff3f31dab2 PyEval_EvalCodeEx + 1555
21 Python 0x00007fff3f2c52ea PyFunction_SetClosure + 779
22 Python 0x00007fff3f2a8078 PyObject_Call + 97
23 Python 0x00007fff3f2b2695 PyMethod_New + 1169
24 pydevd_cython_darwin_27_64.so 0x0000000101bafbd0 __pyx_pw_14_pydevd_bundle_26pydevd_cython_darwin_27_64_9PyDBFrame_5do_wait_suspend + 224
25 pydevd_cython_darwin_27_64.so 0x0000000101b9a69c __pyx_f_14_pydevd_bundle_26pydevd_cython_darwin_27_64_9PyDBFrame_trace_dispatch + 25660
26 pydevd_cython_darwin_27_64.so 0x0000000101bae8ae __pyx_pw_14_pydevd_bundle_26pydevd_cython_darwin_27_64_9PyDBFrame_21trace_dispatch + 142
27 pydevd_cython_darwin_27_64.so 0x0000000101bc5e8a pyx_pw_14_pydevd_bundle_26pydevd_cython_darwin_27_64_15SafeCallWrapper_3__call + 122
28 Python 0x00007fff3f2a8078 PyObject_Call + 97
29 Python 0x00007fff3f323710 PyEval_CallObjectWithKeywords + 159
30 Python 0x00007fff3f342f4b PySys_WriteStdout + 2646
31 Python 0x00007fff3f342fb3 PySys_WriteStdout + 2750
32 Python 0x00007fff3f31fc38 PyEval_EvalFrameEx + 8021
33 Python 0x00007fff3f31dab2 PyEval_EvalCodeEx + 1555
34 Python 0x00007fff3f2c52ea PyFunction_SetClosure + 779
35 Python 0x00007fff3f2a8078 PyObject_Call + 97
36 Python 0x00007fff3f2b2695 PyMethod_New + 1169
37 Python 0x00007fff3f2a8078 PyObject_Call + 97
38 Python 0x00007fff3f2ed603 _PyObject_SlotCompare + 5547
39 Python 0x00007fff3f2e8dcf _PyType_Lookup + 1372
40 Python 0x00007fff3f2a8078 PyObject_Call + 97
41 Python 0x00007fff3f31e9d3 PyEval_EvalFrameEx + 3312
42 Python 0x00007fff3f323cee _PyEval_SliceIndex + 396
43 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
44 Python 0x00007fff3f323cee _PyEval_SliceIndex + 396
45 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
46 Python 0x00007fff3f31dab2 PyEval_EvalCodeEx + 1555
47 Python 0x00007fff3f323d4c _PyEval_SliceIndex + 490
48 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
49 Python 0x00007fff3f323cee _PyEval_SliceIndex + 396
50 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
51 Python 0x00007fff3f31dab2 PyEval_EvalCodeEx + 1555
52 Python 0x00007fff3f31d499 PyEval_EvalCode + 32
53 Python 0x00007fff3f33c645 PyParser_ASTFromFile + 287
54 Python 0x00007fff3f33c6ec PyRun_FileExFlags + 130
55 Python 0x00007fff3f319ea0 _PyBuiltin_Init + 4487
56 Python 0x00007fff3f31e9e6 PyEval_EvalFrameEx + 3331
57 Python 0x00007fff3f323cee _PyEval_SliceIndex + 396
58 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
59 Python 0x00007fff3f31dab2 PyEval_EvalCodeEx + 1555
60 Python 0x00007fff3f323d4c _PyEval_SliceIndex + 490
61 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
62 Python 0x00007fff3f323cee _PyEval_SliceIndex + 396
63 Python 0x00007fff3f31e498 PyEval_EvalFrameEx + 1973
64 Python 0x00007fff3f31dab2 PyEval_EvalCodeEx + 1555
65 Python 0x00007fff3f31d499 PyEval_EvalCode + 32
66 Python 0x00007fff3f33c645 PyParser_ASTFromFile + 287
67 Python 0x00007fff3f33c6ec PyRun_FileExFlags + 130
68 Python 0x00007fff3f33c26b PyRun_SimpleFileExFlags + 718
69 Python 0x00007fff3f34dbfa Py_Main + 3174
70 libdyld.dylib 0x00007fff613043d5 start + 1

Unhandled SIGSEGV: A segmentation fault occurred.
This probably occurred because a compiled module has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Python will now terminate.

Checklist

• confluent-kafka-python and librdkafka version (confluent_kafka.version() and confluent_kafka.libversion()): confluent-kafka[avro]==1.2.0, 16908288
• Apache Kafka broker version:
• Client configuration: {...}
• Operating system: Mac OS 10.14.6, CentOS 7
• Provide client logs (with 'debug': '..' as necessary)
• Provide broker log excerpts
• Critical issue

I don't know how to find the missing information. Please explain how to fill in the missing details.