[BUG] sim/citest: test_mm failed with timeout

[lupyuen]

Description / Steps to reproduce the issue

sim:citest is failing with a test_mm timeout error:
https://github.com/NuttX/nuttx/actions/runs/12935919991/job/36080449067#step:7:173

Configuration/Tool: sim/citest
test_os/test_os.py::test_mm FAILED                                       [ 99%]

=================================== FAILURES ===================================
___________________________________ test_mm ____________________________________

p = <utils.common.connectNuttx object at 0x7f72822c21d0>

    def test_mm(p):
        if p.board in do_not_support:
            pytest.skip("unsupported at {}".format(p.board))
        ret = p.sendCommand("mm", "TEST COMPLETE", timeout=120)
>       assert ret == 0
E       assert -1 == 0
E         +-1
E         -0

/github/workspace/sources/nuttx/tools/ci/testrun/script/test_os/test_os.py:45: AssertionError
----------------------------- Captured stdout call -----------------------------
+------------------------------------------- Catch Exception -------------------------------------------+
+----------------------------------------------- Result ------------------------------------------------+
| Command     : 'mm'                                                                                    |
| Expect value: ['TEST COMPLETE']                                                                       |
| Timeout     : 120s                                                                                    |
| Test result : Timeout                                                                                 |
+-------------------------------------------------------------------------------------------------------+

NuttX Build History says that the Breaking Commit is somewhere between these NuttX Commits:

• Good NuttX Commit: Doc: Fortify Instructions #15658
• Bad NuttX Commit: nuttx/boards:fix kconfig under apps/testing folder that change config-testing-mm to config-testing-heap #15659

Or maybe between these App Commits:

• Good App Commit: Allow GPS serial port to be specified as argument to gps example nuttx-apps#2969
• Bad App Commit: apps/testing:merge case folder to the new mm folder nuttx-apps#2965

https://nuttx-dashboard.org/d/fe2q876wubc3kc/nuttx-build-history?from=now-7d&to=now&timezone=browser&var-arch=$__all&var-subarch=$__all&var-board=sim&var-config=citest&var-group=$__all&var-Filters=

NuttX Dashboard says that sim:citest is failing with the same error on other machines in NuttX Build Farm:

https://nuttx-dashboard.org/d/fe2bqg6uk7nr4a/build-logs-from-nuttx-build-farm?from=now-2d&to=now&timezone=browser&var-arch=sim&var-subarch=$__all&var-board=$__all&var-config=$__all&var-group=$__all&var-Filters=

On which OS does this issue occur?

[OS: Linux]

What is the version of your OS?

Ubuntu LTS at GitHub CI

NuttX Version

master

Issue Architecture

[Arch: simulator]

Issue Area

[Area: Applications]

Host information

No response

Verification

• I have verified before submitting the report.