Python 3.14 compatibility problem

[pixelsquared]

With python 3.14 the default start method is now forkserver instead of fork.

As a test I was able to fix this by adding this to ospd.py.

multiprocessing.set_start_method('fork')

Expected behavior

For ospd-openvas to not crash when starting a scan.

Actual behavior

Traceback (most recent call last):                                                                 
  File "/usr/bin/ospd-openvas", line 8, in <module>                                                
    sys.exit(main())                                                                               
             ~~~~^^                                                                                
  File "/usr/lib/python3.14/site-packages/ospd_openvas/daemon.py", line 1307, in main              
    daemon_main('OSPD - openvas', OSPDopenvas, NotusParser())                                      
    ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                      
  File "/usr/lib/python3.14/site-packages/ospd/main.py", line 153, in main                         
    daemon.run()                                                                                   
    ~~~~~~~~~~^^                                                                                   
  File "/usr/lib/python3.14/site-packages/ospd/ospd.py", line 1104, in run                         
    self.start_queued_scans()                                                                      
    ~~~~~~~~~~~~~~~~~~~~~~~^^                                                                      
  File "/usr/lib/python3.14/site-packages/ospd/ospd.py", line 1141, in start_queued_scans          
    scan_process.start()                                                                           
    ~~~~~~~~~~~~~~~~~~^^                                                                           
  File "/usr/lib/python3.14/multiprocessing/process.py", line 121, in start                        
    self._popen = self._Popen(self)                                                                
                  ~~~~~~~~~~~^^^^^^                                                                
  File "/usr/lib/python3.14/multiprocessing/context.py", line 224, in _Popen                       
    return _default_context.get_context().Process._Popen(process_obj)                              
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^                              
  File "/usr/lib/python3.14/multiprocessing/context.py", line 300, in _Popen                       
    return Popen(process_obj)                                                                      
  File "/usr/lib/python3.14/multiprocessing/popen_forkserver.py", line 35, in __init__             
    super().__init__(process_obj)                                                                  
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^                                                                  
  File "/usr/lib/python3.14/multiprocessing/popen_fork.py", line 20, in __init__                   
    self._launch(process_obj)                                                                      
    ~~~~~~~~~~~~^^^^^^^^^^^^^                                                                      
  File "/usr/lib/python3.14/multiprocessing/popen_forkserver.py", line 47, in _launch              
    reduction.dump(process_obj, buf)                                                               
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^                                                               
  File "/usr/lib/python3.14/multiprocessing/reduction.py", line 60, in dump                        
    ForkingPickler(file, protocol).dump(obj)                                                       
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^                                                       
TypeError: cannot pickle '_thread.lock' object                                                     
when serializing dict item '_lock'                                                                 
when serializing redis.event.EventDispatcher state                                                 
when serializing redis.event.EventDispatcher object                                                
when serializing dict item '_event_dispatcher'                                                     
when serializing redis.client.Redis state                                                          
when serializing redis.client.Redis object                                                         
when serializing dict item 'ctx'                                                                   
when serializing ospd_openvas.db.MainDB state                                                      
when serializing ospd_openvas.db.MainDB object                                                     
when serializing dict item 'main_db'                                                               
when serializing ospd_openvas.daemon.OSPDopenvas state                                             
when serializing ospd_openvas.daemon.OSPDopenvas object                                            
when serializing tuple item 0                                                                      
when serializing method reconstructor arguments                                                    
when serializing method object                                                                     
when serializing dict item '_target'                                                               
when serializing multiprocessing.context.Process state                                             
when serializing multiprocessing.context.Process object                                            
Exception ignored in atexit callback <function exit_cleanup at 0x7f4e079035e0>:                    

Steps to reproduce

1. Install ospd-openvas with python 3.14
2. Install GSA, GVM, etc
3. Run a scan

GVM versions

gsa: (gsad --version)

$ gsad --version
Greenbone Security Assistant Deamon 24.14.2~git-3fe7550-master

gvm: (gvmd --version)

$ gvmd --version
Greenbone Vulnerability Manager 26.15.0
Manager DB revision 266
Copyright (C) 2009-2025 Greenbone AG
License: AGPL-3.0-or-later
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

openvas-scanner: (openvas --version)

$ openvas --version
OpenVAS 23.38.0
gvm-libs 22.35.4
Most new code since 2005: (C) 2024 Greenbone AG
Nessus origin: (C) 2004 Renaud Deraison <deraison@nessus.org>
License GPLv2: GNU GPL version 2
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

gvm-libs:
22.35.4

Environment

Operating system:

> cat /etc/lsb-release
DISTRIB_ID=cachyos
DISTRIB_RELEASE="rolling"
DISTRIB_DESCRIPTION="CachyOS"

Installation method / source: source installation