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Created on 2019-05-04 00:10 by Alexander Riccio, last changed 2022-04-11 14:59 by admin.
| Files | ||||
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| File name | Uploaded | Description | Edit | |
| python_test_invalid_handle_failure.TXT | Alexander Riccio, 2019-05-04 00:10 | Windbg output for the failure | ||
| python_invalid_handle.PNG | Alexander Riccio, 2019-05-04 00:13 | screencap of tracebacj | ||
| Messages (6) | |||
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| msg341365 - (view) | Author: Alexander Riccio (Alexander Riccio) * | Date: 2019-05-04 00:10 | |
I compiled PCBuild Debug x64 from an updated clone of upstream, and when running the testsuite under Application Verifier with handle verification, the test triggers an invalid handle access by passing an invalid overlapped handle to CancelIoEx with this code: Py_CancelIoEx(self->handle, &self->overlapped) (where self->handle appears to be the offending variable). I have no idea who's calling _overlapped.cancel, and a quick spelunking through the codebase only confuses me more. |
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| msg341366 - (view) | Author: Alexander Riccio (Alexander Riccio) * | Date: 2019-05-04 00:13 | |
Hmm, proceeding a bit further pointed to finish_recv in windows_events.py |
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| msg342459 - (view) | Author: sam jonas (samjonas) | Date: 2019-05-14 13:07 | |
Thanks for the solution... |
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| msg342460 - (view) | Author: Andrew Svetlov (asvetlov) *  |
Date: 2019-05-14 13:11 | |
What is "Application Verifier"? Could you provide an instruction on how to install and run it to reproduce the issue? |
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| msg342526 - (view) | Author: Alexander Riccio (Alexander Riccio) * | Date: 2019-05-15 00:11 | |
It's part of the Windows SDK, and is installed with it. To enable for this error, add the Python executable in Application Verifier, and check the Handles box. |
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| msg355046 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2019-10-21 10:34 | |
> when running the testsuite under Application Verifier test_asyncio is quite big. Can you run test_asyncio in verbose mode, and attach the output as a file to the issue? Or try to identify a few examples of tests which fail with "The handle is invalid" errors"? It seems like "The handle is invalid" errors" error occurs while calling _cancel_overlapped(). |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:14 | admin | set | github: 80971 |
| 2019-10-21 10:34:16 | vstinner | set | nosy:
+ vstinner title: test_asyncio fails with application verifier! -> [Windows] test_asyncio fails with application verifier! _cancel_overlapped() fails with "The handle is invalid" messages: + msg355046 versions: + Python 3.9, - Python 3.8 |
| 2019-05-15 00:11:50 | Alexander Riccio | set | messages: + msg342526 |
| 2019-05-14 13:11:13 | asvetlov | set | messages: + msg342460 |
| 2019-05-14 13:07:12 | samjonas | set | nosy:
+ samjonas messages: + msg342459 |
| 2019-05-06 11:28:16 | asvetlov | set | components: + asyncio |
| 2019-05-04 00:19:06 | xtreak | set | nosy:
+ asvetlov, yselivanov |
| 2019-05-04 00:13:49 | Alexander Riccio | set | files:
+ python_invalid_handle.PNG messages: + msg341366 |
| 2019-05-04 00:10:11 | Alexander Riccio | create | |