MemoryError in Cython backend

[linnik]

Hi!
After upgrade from 16.0.2 to 17.1.2 pyzmq occasionally gives me MemoryError in zmq.backend.cython.message.copy_zmq_msg_bytes

Fatal read error on zmq socket transport
protocol: <aiozmq.stream.ZmqStreamProtocol object at 0x7f6617d48b00>
transport: <ZmqTransport sock=<zmq.sugar.socket.Socket object at 0x7f6617d318d0> type=SUB read=polling write=<idle, bufsize=0>>
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/aiozmq/core.py", line 707, in _do_read
    data = self._zmq_sock.recv_multipart(zmq.NOBLOCK)
  File "/usr/local/lib/python3.7/site-packages/zmq/sugar/socket.py", line 467, in recv_multipart
    parts = [self.recv(flags, copy=copy, track=track)]
  File "zmq/backend/cython/socket.pyx", line 788, in zmq.backend.cython.socket.Socket.recv
  File "zmq/backend/cython/socket.pyx", line 824, in zmq.backend.cython.socket.Socket.recv
  File "zmq/backend/cython/socket.pyx", line 195, in zmq.backend.cython.socket._recv_copy
  File "zmq/backend/cython/message.pxd", line 61, in zmq.backend.cython.message.copy_zmq_msg_bytes
MemoryError
*** Error in `python3': free(): invalid next size (normal): 0x00007f6610003420 ***

libzmq-4.2.5
pyzmq-17.1.2
Python-3.7.0 (default, Sep 5 2018, 03:29:17)
[GCC 6.3.0 20170516]

[linnik]

Stable version that works for me is

libzmq-4.1.6
pyzmq-16.0.2
Python-3.5.4 (default, Sep 13 2017, 14:41:13)
[GCC 4.9.2]

[minrk]

Do you have an example to reproduce the error? Is this a 32 or 64b system?

[Machoney]

have also occurred the same error now. I want to reproduce it. I was a SUB module running of different thread.
pyzmq==18.0.1
python-3.7.4
Windows 10

assertion failed: check () (bundled\zeromq\src\msg.cpp:347)
Exception in thread Thread-2:
Traceback (most recent call last):
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python37\lib\threading.py", line 926, in _bootstrap_inner
    self.run()
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python37\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "path/to/my/file", line 55, in run
    received_data = self._socket.recv()  # receive data from publish
  File "zmq\backend\cython\socket.pyx", line 788, in zmq.backend.cython.socket.Socket.recv
  File "zmq\backend\cython\socket.pyx", line 824, in zmq.backend.cython.socket.Socket.recv
  File "zmq\backend\cython\socket.pyx", line 195, in zmq.backend.cython.socket._recv_copy
  File "zmq\backend\cython\message.pxd", line 61, in zmq.backend.cython.message.copy_zmq_msg_bytes
MemoryError
Process finished with exit code 1073741845

[SokolovSD]

Same error code 1073741845 while creating socket at second line of:
context = zmq.Context()
socket = context.socket(zmq_type)

pyzmq 22.3.0
Python 3.9
windows 11