new[CI]: add linux sanitizer tests

[incertum]

Proposed changes

new[CI]: add linux sanitizer tests

CC @madrob

Checklist

Put an x in the boxes that apply.

• I have read the CONTRIBUTING document
• I have run pre-commit run --all-files to format my code / installed pre-commit prior to committing changes
• I have added tests that prove my fix is effective or that my feature works
• I have updated the necessary documentation (if needed)

[madrob]

Did this find any bugs?

[incertum]

Did this find any bugs?

Now with the fix on top checkout https://github.com/ml-explore/mlx/actions/runs/19943012002/job/57185456349?pr=2860 ... it seems that we could improve a few things, however note that to be more serious we would need to add fuzzing! Also note that for now I turned of the leak detector etc (see settings).

[incertum]

@awni: @madrob and I chatted and are proposing to defer enabling ASAN and TSAN CI checks until follow up PR(s) where issues will get addressed.
We left UBSAN as it's current configured to not halt on error as UBSAN is generally more tricky to address, but that way we can view the logs if we wanted to.

What do you think?

[awni]

Fine with me. Do you plan do to send some of those follow ups?

[incertum]

Fine with me. Do you plan do to send some of those follow ups?

Yes I'll try to look into it :)

[incertum]

@angeloskath and @awni I have just rebased this PR and the ASAN tests (CPU backend) look good now. The todo comment is also up-to-date plus I created #2915.

What would be needed from your perspective to get a v1 of these new checks merged in?

[awni]

Looks good, thanks!