Re: [OE-core] [PATCH v6 09/14] selftest/cases/runtime_test: Add test for Linux Rust sample

[Harish Sadineni <Harish.Sadineni@windriver.com>]

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On 2/15/2026 10:31 PM, Yoann Congal wrote:
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>
> On Sun Feb 15, 2026 at 2:40 PM CET, Mathieu Dubois-Briand wrote:
>> On Thu Feb 12, 2026 at 7:10 PM CET, Harish via lists.openembedded.org Sadineni wrote:
>>> From: Yoann Congal<yoann.congal@smile.fr>
>>>
>>> This new case tests that the rust_mininal sample inside the kernel source
>>> tree is buildable and works properly: check that the module can be
>>> loaded and that it prints correctly.
>>>
>>> Signed-off-by: Yoann Congal<yoann.congal@smile.fr>
>>> Signed-off-by: Harish Sadineni<Harish.Sadineni@windriver.com>
>>> ---
>> Hi Harish, Yoann,
>>
>> It looks like this test is still a bit intermittent:
>>
>> 2026-02-15 09:27:44,140 - oe-selftest - INFO - runtime_test.RustKernel.test_kernel_rust_sample (subunit.RemotedTestCase)
>> 2026-02-15 09:27:44,142 - oe-selftest - INFO -  ... FAIL
>> ...
>> 2026-02-15 09:27:44,142 - oe-selftest - INFO - 11: 13/57 404/671 (87.99s) (0 failed) (runtime_test.RustKernel.test_kernel_rust_sample)
>> 2026-02-15 09:27:44,142 - oe-selftest - INFO - testtools.testresult.real._StringException: Traceback (most recent call last):
>>    File "/srv/pokybuild/yocto-worker/oe-selftest-armhost/build/layers/openembedded-core/meta/lib/oeqa/selftest/cases/runtime_test.py", line 506, in test_kernel_rust_sample
>>      self.assertEqual(status, 1, "Loading rust_minimal module failed!")
>>      ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>    File "/usr/lib/python3.13/unittest/case.py", line 907, in assertEqual
>>      assertion_func(first, second, msg=msg)
>>      ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
>>    File "/usr/lib/python3.13/unittest/case.py", line 900, in _baseAssertEqual
>>      raise self.failureException(msg)
>> AssertionError: 0 != 1 : Loading rust_minimal module failed!
>>
>> https://autobuilder.yoctoproject.org/valkyrie/#/builders/23/builds/3319
> This is oe-selftest-armhost on ubuntu2504-vk-arm1.
Hi Yoann, Mathieu,

I tried few builds locally, but not able to reproduce this.

On the autobuilder, We ran following builds which were completed 
successfully on ubuntu2504-vk-arm1:
https://autobuilder.yoctoproject.org/valkyrie/#/builders/23/builds/3326
https://autobuilder.yoctoproject.org/valkyrie/#/builders/23/builds/3331

Additionally, One of Mathieu's build also ran successfully on 
oe-selftest-armhost ubuntu2504-vk-arm1:
https://autobuilder.yoctoproject.org/valkyrie/#/builders/23/builds/3323
<https://autobuilder.yoctoproject.org/valkyrie/#/builders/23/builds/3323>
 From what I can see, build 3319 
<https://autobuilder.yoctoproject.org/valkyrie/#/builders/23/builds/3319>was 
triggered from a-full/3219 
<https://autobuilder.yoctoproject.org/valkyrie/#/builders/29/builds/3219>:
However, when checking a-full/3219, it triggered build 3317 
<https://autobuilder.yoctoproject.org/valkyrie/#/builders/23/builds/3317>, 
where the rust kernel selftest passed.

I can see few other builds were successful on oe-selftest-armhost with 
this patch series. I’m not sure why the failure occurred in this case.
Mathieu, could you please try running a few additional builds to see if 
it reproduces?

Thanks,
Harish

>
> Harish, do you have access to an ARM host to reproduce/debug this?
> (I have looked but the builddir for this particular run was already deleted)
>
> --
> Yoann Congal
> Smile ECS
>

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