PyImport_GetModuleDict when trying to use pyrasite

Question

PyImport_GetModuleDict when trying to use pyrasite

pvanderlinden opened this issue 8 years ago · comments

Paul van der Linden commented 8 years ago

I get the follow exception on the pyrasited process:

Fatal Python error: PyImport_GetModuleDict: no module dictionary!

Current thread 0x00007fdac71ed700 (most recent call first):
  File ".../lib/python3.4/site-packages/zmq/sugar/context.py", line 44 in __del__
Aborted (core dumped)

This is in python 3.4.3, with trying to use pyrasite on a py.test run which hangs at the end of the test run.

Luke Macken · Answer 1 · Tue Mar 08 2016 01:10:39 GMT+0800 (China Standard Time)

Are you able to reproduce this with a simple time.sleep() test?

I just did this with python 3.4 and was unable to reproduce the bug. I'm guessing it's because of zeromq's C extension.

Paul van der Linden · Answer 2 · Tue Mar 08 2016 18:17:13 GMT+0800 (China Standard Time)

I tried to isolate it, but haven't succeeded so far (it is probably not a problem with py.test indeed). What I suspect at the moment is that Pyrasite is trying to start inside the process when a ZMQ thread is actually running (which are non-python threads).

Luke Macken · Answer 3 · Wed Mar 09 2016 09:13:51 GMT+0800 (China Standard Time)

Yeah, that's what I'm thinking as well.

It would be really difficult to handle this scenario in our injection code without some ugly hacks. However, since this whole project is based on an ugly hack, I'm all for trying it ;)