potiuk commented on pull request #18745:
URL: https://github.com/apache/airflow/pull/18745#issuecomment-936673517
Hey @ashb - I have an idea and need your help - if you can reproduce it
locally.
Can you please try:
```
./breeze --github-image-id 2057b5bacee40841f7c7255e457876de04f54940
--backend mssql --python 3.6 --db-reset --skip-mounting-local-sources
--test-type Always shell
```
and then:
```
pytest --with-db-init tests/always
```
This is what runs on CI and generates this error. However when I run it
locally, I get NO PROBLEM.
If you can reproducibly get failure for it on your machine, then I believe I
know the root cause.
My Hypothesis is that I have some CPU extension or more likely kernel
feature (kernel is shared between host and container), that you do not have,
and it makes compilation go different route and use the TLS for optimisation -
but then it might behave differently (and crash) when that CPU extension/kernel
feature is not available.
If we can consistently reproduce it, we can compare our CPU
extensions/kernel versions and possibly we will be able to disable it when I
generate the image.
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