Test failure: AttributeError: 'NoneType' object has no attribute 'additional_info'

[int19h]

Looks like some of the earlier issues we had - probably needs another null check?

2022-11-16T22:29:19.8770109Z 0.00s - PyDB.do_wait_suspend
2022-11-16T22:29:19.8770889Z name: _thread1 (line: 17)
2022-11-16T22:29:19.8771735Z  file: /tmp/pytest-of-vsts/pytest-0/popen-gw5/test_step_multi_threads_progra2/code_to_debug.py
2022-11-16T22:29:19.8772367Z  event: line
2022-11-16T22:29:19.8772744Z  arg: None
2022-11-16T22:29:19.8773420Z  step: CMD_STEP_INTO (original step: <Unknown: -1>)
2022-11-16T22:29:19.8774803Z  thread: <_DummyThread(Dummy-6, started daemon 139635158152960)>, thread id: pid_47755_id_139635499782096, id(thread): 139635499782096
2022-11-16T22:29:19.8776129Z 0.00s -   Stack: /tmp/pytest-of-vsts/pytest-0/popen-gw5/test_step_multi_threads_progra2/code_to_debug.py, _thread1, 17
2022-11-16T22:29:19.8777140Z 0.00s -   Stack: /opt/hostedtoolcache/Python/3.7.15/x64/lib/python3.7/threading.py, run, 870
2022-11-16T22:29:19.8778099Z 0.00s -   Stack: /opt/hostedtoolcache/Python/3.7.15/x64/lib/python3.7/threading.py, _bootstrap_inner, 926
2022-11-16T22:29:19.8779112Z 0.00s -   Stack: /opt/hostedtoolcache/Python/3.7.15/x64/lib/python3.7/threading.py, _bootstrap, 890
2022-11-16T22:29:19.8780208Z 0.00s -   Stack: /home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/_pydev_bundle/pydev_monkey.py, __call__, 1070
2022-11-16T22:29:19.8781107Z 0.00s - Sending suspend notification.
2022-11-16T22:29:19.8781913Z 0.00s - Could not find thread pid_47755_id_139635499782096.
2022-11-16T22:29:19.8782919Z 0.00s - Available: (['pid_47755_id_139635538572624', 'pid_47755_id_139635516896016', 'pid_47755_id_139635516896528'],).
2022-11-16T22:29:19.8784589Z 0.00s - sending cmd (http_json) --> CMD_WRITE_TO_CONSOLE {"type": "event", "event": "output", "body": {"output": "<class 'AttributeError'> raised from within the callback set in sys.settrace.\nDebugging will be disabled for this thread (<_DummyThread(Dummy-6, started daemon 139635158152960)>).\n", "category": "console", "source": {}}, "seq": 26, "pydevd_cmd_id": 116}
2022-11-16T22:29:19.8785709Z 
2022-11-16T22:29:19.8786148Z Traceback (most recent call last):
2022-11-16T22:29:19.8786748Z   File "_pydevd_bundle/pydevd_cython.pyx", line 147, in _pydevd_bundle.pydevd_cython.set_additional_thread_info
2022-11-16T22:29:19.8787662Z AttributeError: 'NoneType' object has no attribute 'additional_info'
2022-11-16T22:29:19.8788154Z 
2022-11-16T22:29:19.8788645Z During handling of the above exception, another exception occurred:
2022-11-16T22:29:19.8788967Z 
2022-11-16T22:29:19.8789350Z Traceback (most recent call last):
2022-11-16T22:29:19.8789919Z   File "_pydevd_bundle/pydevd_cython.pyx", line 1135, in _pydevd_bundle.pydevd_cython.PyDBFrame.trace_dispatch
2022-11-16T22:29:19.8790636Z   File "_pydevd_bundle/pydevd_cython.pyx", line 312, in _pydevd_bundle.pydevd_cython.PyDBFrame.do_wait_suspend
2022-11-16T22:29:19.8791829Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/pydevd.py", line 2066, in do_wait_suspend
2022-11-16T22:29:19.8792686Z     with self._threads_suspended_single_notification.notify_thread_suspended(thread_id, stop_reason):
2022-11-16T22:29:19.8793782Z   File "/opt/hostedtoolcache/Python/3.7.15/x64/lib/python3.7/contextlib.py", line 112, in __enter__
2022-11-16T22:29:19.8794347Z     return next(self.gen)
2022-11-16T22:29:19.8795297Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/pydevd.py", line 451, in notify_thread_suspended
2022-11-16T22:29:19.8796163Z     with AbstractSingleNotificationBehavior.notify_thread_suspended(self, thread_id, stop_reason):
2022-11-16T22:29:19.8797033Z   File "/opt/hostedtoolcache/Python/3.7.15/x64/lib/python3.7/contextlib.py", line 112, in __enter__
2022-11-16T22:29:19.8797572Z     return next(self.gen)
2022-11-16T22:29:19.8798421Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/pydevd.py", line 405, in notify_thread_suspended
2022-11-16T22:29:19.8799146Z     self.on_thread_suspend(thread_id, stop_reason)
2022-11-16T22:29:19.8800066Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/pydevd.py", line 376, in on_thread_suspend
2022-11-16T22:29:19.8800783Z     self.send_suspend_notification(thread_id, stop_reason)
2022-11-16T22:29:19.8801992Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/pydevd.py", line 445, in send_suspend_notification
2022-11-16T22:29:19.8802849Z     py_db.writer.add_command(py_db.cmd_factory.make_thread_suspend_single_notification(py_db, thread_id, stop_reason))
2022-11-16T22:29:19.8804568Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_net_command_factory_json.py", line 353, in make_thread_suspend_single_notification
2022-11-16T22:29:19.8805464Z     info = set_additional_thread_info(thread)
2022-11-16T22:29:19.8806120Z   File "_pydevd_bundle/pydevd_cython.pyx", line 151, in _pydevd_bundle.pydevd_cython.set_additional_thread_info
2022-11-16T22:29:19.8807075Z   File "_pydevd_bundle/pydevd_cython.pyx", line 157, in _pydevd_bundle.pydevd_cython.set_additional_thread_info
2022-11-16T22:29:19.8808024Z AttributeError: 'NoneType' object has no attribute 'additional_info'
2022-11-16T22:29:19.8808635Z Traceback (most recent call last):
2022-11-16T22:29:19.8809445Z   File "_pydevd_bundle/pydevd_cython.pyx", line 147, in _pydevd_bundle.pydevd_cython.set_additional_thread_info
2022-11-16T22:29:19.8810867Z AttributeError: 'NoneType' object has no attribute 'additional_info'
2022-11-16T22:29:19.8811384Z 
2022-11-16T22:29:19.8812067Z During handling of the above exception, another exception occurred:
2022-11-16T22:29:19.8812419Z 
2022-11-16T22:29:19.8812809Z Traceback (most recent call last):
2022-11-16T22:29:19.8813440Z   File "_pydevd_bundle/pydevd_cython.pyx", line 1829, in _pydevd_bundle.pydevd_cython.ThreadTracer.__call__
2022-11-16T22:29:19.8814625Z   File "_pydevd_bundle/pydevd_cython.pyx", line 1152, in _pydevd_bundle.pydevd_cython.PyDBFrame.trace_dispatch
2022-11-16T22:29:19.8815637Z   File "_pydevd_bundle/pydevd_cython.pyx", line 1135, in _pydevd_bundle.pydevd_cython.PyDBFrame.trace_dispatch
2022-11-16T22:29:19.8816577Z   File "_pydevd_bundle/pydevd_cython.pyx", line 312, in _pydevd_bundle.pydevd_cython.PyDBFrame.do_wait_suspend
2022-11-16T22:29:19.8817650Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/pydevd.py", line 2066, in do_wait_suspend
2022-11-16T22:29:19.8818494Z     with self._threads_suspended_single_notification.notify_thread_suspended(thread_id, stop_reason):
2022-11-16T22:29:19.8819361Z   File "/opt/hostedtoolcache/Python/3.7.15/x64/lib/python3.7/contextlib.py", line 112, in __enter__
2022-11-16T22:29:19.8819885Z     return next(self.gen)
2022-11-16T22:29:19.8820884Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/pydevd.py", line 451, in notify_thread_suspended
2022-11-16T22:29:19.8821712Z     with AbstractSingleNotificationBehavior.notify_thread_suspended(self, thread_id, stop_reason):
2022-11-16T22:29:19.8822569Z   File "/opt/hostedtoolcache/Python/3.7.15/x64/lib/python3.7/contextlib.py", line 112, in __enter__
2022-11-16T22:29:19.8823120Z     return next(self.gen)
2022-11-16T22:29:19.8823995Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/pydevd.py", line 405, in notify_thread_suspended
2022-11-16T22:29:19.8824730Z     self.on_thread_suspend(thread_id, stop_reason)
2022-11-16T22:29:19.8825783Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/pydevd.py", line 376, in on_thread_suspend
2022-11-16T22:29:19.8826837Z     self.send_suspend_notification(thread_id, stop_reason)
2022-11-16T22:29:19.8828014Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/pydevd.py", line 445, in send_suspend_notification
2022-11-16T22:29:19.8828893Z     py_db.writer.add_command(py_db.cmd_factory.make_thread_suspend_single_notification(py_db, thread_id, stop_reason))
2022-11-16T22:29:19.8830177Z   File "/home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_net_command_factory_json.py", line 353, in make_thread_suspend_single_notification
2022-11-16T22:29:19.8831041Z     info = set_additional_thread_info(thread)
2022-11-16T22:29:19.8831678Z   File "_pydevd_bundle/pydevd_cython.pyx", line 151, in _pydevd_bundle.pydevd_cython.set_additional_thread_info
2022-11-16T22:29:19.8833378Z   File "_pydevd_bundle/pydevd_cython.pyx", line 157, in _pydevd_bundle.pydevd_cython.set_additional_thread_info
2022-11-16T22:29:19.8834605Z AttributeError: 'NoneType' object has no attribute 'additional_info'
2022-11-16T22:29:19.8835853Z 0.01s - PyDB.do_wait_suspend
2022-11-16T22:29:19.8836544Z name: _thread2 (line: 25)
2022-11-16T22:29:19.8837654Z  file: /tmp/pytest-of-vsts/pytest-0/popen-gw5/test_step_multi_threads_progra2/code_to_debug.py
2022-11-16T22:29:19.8838256Z  event: line
2022-11-16T22:29:19.8838612Z  arg: None
2022-11-16T22:29:19.8839508Z  step: CMD_STEP_INTO (original step: <Unknown: -1>)
2022-11-16T22:29:19.8840213Z  thread: <Thread(thread2, started 139635124590336)>, thread id: pid_47755_id_139635516896528, id(thread): 139635516896528
2022-11-16T22:29:19.8841193Z 0.00s -   Stack: /tmp/pytest-of-vsts/pytest-0/popen-gw5/test_step_multi_threads_progra2/code_to_debug.py, _thread2, 25
2022-11-16T22:29:19.8842360Z 0.00s -   Stack: /opt/hostedtoolcache/Python/3.7.15/x64/lib/python3.7/threading.py, run, 870
2022-11-16T22:29:19.8843490Z 0.00s -   Stack: /opt/hostedtoolcache/Python/3.7.15/x64/lib/python3.7/threading.py, _bootstrap_inner, 926
2022-11-16T22:29:19.8844509Z 0.00s -   Stack: /opt/hostedtoolcache/Python/3.7.15/x64/lib/python3.7/threading.py, _bootstrap, 890
2022-11-16T22:29:19.8845779Z 0.00s -   Stack: /home/vsts/work/1/s/.tox/py37/lib/python3.7/site-packages/debugpy/_vendored/pydevd/_pydev_bundle/pydev_monkey.py, __call__, 1070
2022-11-16T22:29:19.8847010Z 0.00s - Suspend not sent because stop reason is thread suspend and pause was not requested.

[fabioz]

Humm, I still have to wrap my head around this.

The real problem is that the thread id is gotten from:

thread_id = get_current_thread_id(thread)

but later trying to do:

thread = pydevd_find_thread_by_id(thread_id)

is returning None.

This shouldn't happen... I'll have to review the code a bit better to know why this happens at all (note: there's an open issue to improve this handling: #504).