Getting the below error from long running python processes
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2020-10-18T21:52:59.383Z ======= Backtrace: =========
2020-10-18T21:52:59.383Z /lib64/libc.so.6(+0x7f3e4)[0x7f7bd3e053e4]
2020-10-18T21:52:59.383Z /lib64/libc.so.6(+0x814db)[0x7f7bd3e074db]
2020-10-18T21:52:59.383Z /lib64/libcrypto.so.10(CRYPTO_free+0x1d)[0x7f7bd1cfe80d]
2020-10-18T21:52:59.383Z /lib64/libssl.so.10(+0x41aa3)[0x7f7bd2134aa3]
2020-10-18T21:52:59.383Z /lib64/libssl.so.10(SSL_CTX_free+0x147)[0x7f7bd2136977]
2020-10-18T21:52:59.383Z /usr/local/lib/python3.7/lib-dynload/_ssl.cpython-37m-x86_64-linux-gnu.so(+0xe50b)[0x7f7bcf9d750b]
2020-10-18T21:52:59.383Z /lib64/libpython3.7m.so.1.0(+0x101bab)[0x7f7bd4db1bab]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xe2416)[0x7f7bd4d92416]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0x101ca1)[0x7f7bd4db1ca1]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xca6d9)[0x7f7bd4d7a6d9]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0x1f6255)[0x7f7bd4ea6255]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0x19fede)[0x7f7bd4e4fede]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyObject_GC_Malloc+0x133)[0x7f7bd4e50943]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyObject_GC_New+0xd)[0x7f7bd4e5099d]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xe3fdf)[0x7f7bd4d93fdf]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(PyObject_GetIter+0x16)[0x7f7bd4d62d86]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0x133a)[0x7f7bd4e0c55a]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xc562b)[0x7f7bd4d7562b]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0xa16)[0x7f7bd4e0bc36]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xc562b)[0x7f7bd4d7562b]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0xa16)[0x7f7bd4e0bc36]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xc562b)[0x7f7bd4d7562b]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0xa16)[0x7f7bd4e0bc36]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xc562b)[0x7f7bd4d7562b]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0xa16)[0x7f7bd4e0bc36]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xc562b)[0x7f7bd4d7562b]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0xa16)[0x7f7bd4e0bc36]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xc562b)[0x7f7bd4d7562b]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0xa16)[0x7f7bd4e0bc36]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xc562b)[0x7f7bd4d7562b]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0xa16)[0x7f7bd4e0bc36]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xc562b)[0x7f7bd4d7562b]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0xa16)[0x7f7bd4e0bc36]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xc562b)[0x7f7bd4d7562b]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0xa16)[0x7f7bd4e0bc36]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(+0xc562b)[0x7f7bd4d7562b]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0xa16)[0x7f7bd4e0bc36]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalCodeWithName+0x27e)[0x7f7bd4e1602e]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyFunction_FastCallKeywords+0xda)[0x7f7bd4d6d4aa]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0x4f34)[0x7f7bd4e10154]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalCodeWithName+0x27e)[0x7f7bd4e1602e]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyFunction_FastCallKeywords+0xda)[0x7f7bd4d6d4aa]
2020-10-18T21:52:59.384Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0x4f34)[0x7f7bd4e10154]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(+0xbcdfa)[0x7f7bd4d6cdfa]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0x4f34)[0x7f7bd4e10154]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(+0xbcdfa)[0x7f7bd4d6cdfa]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0x79c)[0x7f7bd4e0b9bc]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(+0xbcdfa)[0x7f7bd4d6cdfa]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyFunction_FastCallDict+0x66)[0x7f7bd4d6cfc6]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyObject_Call_Prepend+0x7b)[0x7f7bd4d6ef0b]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(+0x107b81)[0x7f7bd4db7b81]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(+0x1038a2)[0x7f7bd4db38a2]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyObject_FastCallKeywords+0x99)[0x7f7bd4d6dc89]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0x52c5)[0x7f7bd4e104e5]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(+0xbcdfa)[0x7f7bd4d6cdfa]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0x4f34)[0x7f7bd4e10154]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(+0xbcdfa)[0x7f7bd4d6cdfa]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyFunction_FastCallDict+0x66)[0x7f7bd4d6cfc6]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0x1fd8)[0x7f7bd4e0d1f8]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalCodeWithName+0x27e)[0x7f7bd4e1602e]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyFunction_FastCallKeywords+0xda)[0x7f7bd4d6d4aa]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalFrameDefault+0x4c4)[0x7f7bd4e0b6e4]
2020-10-18T21:52:59.385Z /lib64/libpython3.7m.so.1.0(_PyEval_EvalCodeWithName+0x27e)[0x7f7bd4e1602e]

python process getting killed after this error

Implementation details
1). python long running stomp.py client (stomp+ssl)
2). main process thread used to create connection (while true sleep for holding the process)
3). listener thread receives message in another thread

Implementation details
1). python long running stomp.py client (stomp+ssl)
2). main process thread used to create connection (while true sleep for holding the process)
3). listener thread receives message and processes it

Could you please provide detailed information about your platform (OS, CPU, vendor/distribution, Python version, and OpenSSL version), a full stacktrace with debug symbols, and Python code to reproduce the error?

Why is the _ssl module in /usr/local/lib while the rest of your Python installation is in /lib64? Did you compile the module yourself?

Thanks for the reply Christian Heimes
Environment details

1). os - centos 7
2). python - 3.7.3

python installed inside docker container and we are using AWS ECS with fargate for docker container deployment
while installing python37 we are copying below files

cp /usr/local/lib/libpython3.7m.so.1.0 /lib64/libpython3.7m.so.1.0
cp /usr/local/lib/python3.7 /usr/local/lib/python3.7

we didn't compile the _ssl module

Why are you copying the file around?

How did you install Python 3.7 in the first place. AFAIK CentOS 7 does not come with Python 3.7.

Python 3.7.3 is old and no longer supported. Can you upgrade to a more recent version of 3.7?

This error happens randomly and we couldn't able to reproduce the error.

we are installing python using wget
https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tgz
export LD_LIBRARY_PATH=/usr/local/Python3.7/lib
export PATH="/usr/local/bin:$PATH"

There isn't much I can do for you. CentOS 7 has OpenSSL 1.0.2. There might be a threading issue in OpenSSL or Python. Both Python 3.7.3 and OpenSSL 1.0.2 are no longer supported. The minimum supported versions are OpenSSL 1.1.1 and Python 3.7.9.  You'd have to update to CentOS 8 to get a more recent OpenSSL version.

As you said we are using a threaded consumers in which main thread will create connection and listener thread will receive message.
We are passing main thread object to listener to acknowledge the message using connection object (conn.ack)

in connection class
self.conn = activemq stomp connection
self.listener_obj = ConsumerListener(self)

in listener class
self.conn = conn_obj_from_main_thread
self.conn.ack(msg_id, subscription)

Python 3.7 no longer receives regular updates. Please feel free to reopen the bug if you can reproduce the issue with a more recent Python and OpenSSL version.