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Test suite fails on AMD64 Windows11 Non-Debug 3.x: Python fails with STATUS_VIRUS_INFECTED #144652
Description
Extract of: https://buildbot.python.org/#/builders/914/builds/5450
0:29:46 load avg: 1.07 [ 1/38/1] test_filecmp worker non-zero exit code (Exit code 3221227782) 0:29:46 load avg: 1.07 [ 2/38/2] test.test_concurrent_futures.test_thread_pool worker non-zero exit code (Exit code 3221227782) 0:29:46 load avg: 1.07 [ 3/38/3] test_contextlib worker non-zero exit code (Exit code 3221227782) 0:29:46 load avg: 1.07 [ 4/38/4] test_coroutines worker non-zero exit code (Exit code 3221227782) 0:29:46 load avg: 1.07 [ 5/38/5] test_zipimport_support worker non-zero exit code (Exit code 3221227782) 0:29:46 load avg: 1.07 [ 6/38/6] test_contextlib_async worker non-zero exit code (Exit code 3221227782) 0:29:46 load avg: 1.07 [ 7/38/7] test.test_io.test_univnewlines worker non-zero exit code (Exit code 3221227782)
3221227782 is 0xc0000906 or STATUS_VIRUS_INFECTED: "The operation did not complete successfully because the file contains a virus".
@zware: Would you mind to look at your buildbot worker to check if an antivirus application detects freshly built Python binaries as virus?
Activity
pythongh-144652: Support Windows exit status in support get_signal_na…
pythongh-144652: Support Windows exit status in support get_signal_na…
encukou commented on Feb 10, 2026
Oh!
For reference, do you know where this is documented?
vstinner commented on Feb 10, 2026
I found for example this long table of NTSTATUS Values:
https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-erref/596a1078-e883-4972-9bbc-49e60bebca55
gh-144652: Support Windows exit status in support get_signal_name() (#…
pythongh-144652: Support Windows exit status in support get_signal_na…
[3.14] gh-144652: Support Windows exit status in support get_signal_n…
zware commented on Feb 10, 2026
Looking at the Windows Security "Protection history" it looks like it started finding Trojan:Win32/Bearfoos.A!ml in B:\uildarea\3.x.ware-win11.nondebug\build\PCbuild\amd64\python315.dll a few days ago. I've added an exclusion for the B:\uildarea directory.
vstinner commented on Feb 10, 2026
Thanks. I close the issue. Reopen it if the issue comes back.
zooba commented on Feb 10, 2026
Yeah, there's some false positives going around - breaking a lot of my private CI too...
Excluding the build area should be good enough. Probably a reasonable speed improvement, too
pythongh-144652: Support Windows exit status in support get_signal_na…
pythongh-144652: Support Windows exit status in support get_signal_na…
pythongh-144652: Support Windows exit status in support get_signal_na…