16081 2025-11-27 09:06:40 +0000 bitbake: SemLock usage error on fedora43 2026-03-12 14:13:27 +0000 1 1 7 Build System, Metadata & Runtime BitBake bitbake unspecified x86 Multiple RESOLVED FIXED Medium+ normal 6.0 M1 1 mathieu.dubois-briand richard.purdie ccasciato philip poky.bs.watcher poky.watcher randy.macleod --- --- No (bug/feature does not impact docs) oldest_to_newest 103399 0 mathieu.dubois-briand 2025-11-27 09:06:40 +0000 We got this error on the Fedor43 worker: ERROR: An uncaught exception occurred in runqueue Traceback (most recent call last): File "/srv/pokybuild/yocto-worker/qa-extras/build/layers/bitbake/lib/bb/runqueue.py", line 1663, in execute_runqueue return self._execute_runqueue() ~~~~~~~~~~~~~~~~~~~~~~^^ File "/srv/pokybuild/yocto-worker/qa-extras/build/layers/bitbake/lib/bb/runqueue.py", line 1607, in _execute_runqueue retval = self.dump_signatures(dumpsigs) File "/srv/pokybuild/yocto-worker/qa-extras/build/layers/bitbake/lib/bb/runqueue.py", line 1718, in dump_signatures p.start() ~~~~~~~^^ File "/usr/lib64/python3.14/multiprocessing/process.py", line 121, in start self._popen = self._Popen(self) ~~~~~~~~~~~^^^^^^ File "/usr/lib64/python3.14/multiprocessing/context.py", line 224, in _Popen return _default_context.get_context().Process._Popen(process_obj) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^ File "/usr/lib64/python3.14/multiprocessing/context.py", line 300, in _Popen return Popen(process_obj) File "/usr/lib64/python3.14/multiprocessing/popen_forkserver.py", line 35, in __init__ super().__init__(process_obj) ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^ File "/usr/lib64/python3.14/multiprocessing/popen_fork.py", line 20, in __init__ self._launch(process_obj) ~~~~~~~~~~~~^^^^^^^^^^^^^ File "/usr/lib64/python3.14/multiprocessing/popen_forkserver.py", line 47, in _launch reduction.dump(process_obj, buf) ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/usr/lib64/python3.14/multiprocessing/reduction.py", line 60, in dump ForkingPickler(file, protocol).dump(obj) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^ File "/usr/lib64/python3.14/multiprocessing/synchronize.py", line 109, in __getstate__ raise RuntimeError('A SemLock created in a fork context is being ' ...<2 lines>... 'multiprocessing objects and Process.') RuntimeError: A SemLock created in a fork context is being shared with a process in a spawn context. This is not supported. Please use the same context to create multiprocessing objects and Process. 103401 1 mathieu.dubois-briand 2025-11-27 09:23:40 +0000 qa-extras fedora43-vk-1 master completed at 2025-11-24 02:29:07+00:00 https://autobuilder.yoctoproject.org/valkyrie/#/builders/99/builds/2754/steps/22/logs/stdio 103442 2 richard.purdie 2025-12-01 14:04:10 +0000 I think that: bb/runqueue.py:from multiprocessing import Process can be changed to: bb/runqueue.py:from bb.multiprocessing import Process to fix this. 104591 3 richard.purdie 2026-03-12 14:13:27 +0000 https://git.openembedded.org/bitbake/commit/?id=35866d55908009df429870b28cda0d2266074b48