Twister: Broken on NRF52840 with pyocd option timeout error

[pratapnaidu]

Describe the bug
The twister framework bails with timeout error when executed while choosing pyocd option as west runner

To Reproduce
Steps to reproduce the behavior:

1. Checkout the branch above 2.5.0 version
2. set the GNUARMEMB toolchain, both path and toolchain
3. ./scripts/twister --device-testing --device-serial /dev/ttyACM0 --west-flash --west-runner=pyocd -p nrf52840dk_nrf52840 -T tests/drivers/adc/adc_api -vv

Expected behavior

<<<-----------------------------------(on zephyr-v2.5.0)----------------------------------------------->>>

DEBUG   - DEVICE: PROJECT EXECUTION SUCCESSFUL
DEBUG   - run status: nrf52840dk_nrf52840/tests/drivers/adc/adc_api/drivers.adc passed
INFO    - 1/1 nrf52840dk_nrf52840       tests/drivers/adc/adc_api/drivers.adc    PASSED (device 5.319s)

Impact
Projects using pyocd with cmsis daplink firmware on nrf52840 dk board

Logs and console output

DEBUG   - Timed out while monitoring serial output on nrf52840dk_nrf52840
DEBUG   - run status: nrf52840dk_nrf52840/tests/drivers/adc/adc_api/drivers.adc timeout
INFO    - 1/1 nrf52840dk_nrf52840       tests/drivers/adc/adc_api/drivers.adc   FAILED Timeout (device 64.248s)

Environment (please complete the following information):

• OS: Linux
• Toolchain: gnuarmemb
• Commit SHA or Version used (1af1052) / (2.7.0-rc2)

Additional context
There is one interesting observation though,the same twister command works on 2.5.0 version, and when we execute on 2.6 and higher we get this warning of possible DAPLINK:Overflow error, as highlighted below

DEBUG   - DEVICE: ===================================================================
DEBUG   - DEVICE: START - test_adc_sample_with_interval
DEBUG   - DEVICE: sample_with_interval_callback: sampling 0
DEBUG   - DEVICE: sample_with_interval_callback: sampling 1
DEBUG   - DEVICE: sample_with_interval_callback:<**DAPLink:Overflow**>
DEBUG   - DEVICE: *** Booting Zephyr OS build v2.7.0-rc2  ***
DEBUG   - DEVICE: Running test suite adc_basic_test

[carlescufi]

Could you try setting CONFIG_ NULL_POINTER_EXCEPTION_DETECTION= NULL_POINTER_EXCEPTION_DETECTION_NONE and see if that helps?

[pratapnaidu]

Apologies for the delay, so this issue is related to #32984 which got auto closed for being stale.

So, what part of the subsys this issue is related? West

[niklasparnesten]

Could you try setting CONFIG_ NULL_POINTER_EXCEPTION_DETECTION= NULL_POINTER_EXCEPTION_DETECTION_NONE and see if that helps?

I am having the same problem when running twister with openocd and nrf.

Setting CONFIG_NULL_POINTER_EXCEPTION_DETECTION_NONE=y in the testcase.yml works for me, but I do not understand why...

[nashif]

Now a twister issue, this is the good old CONFIG_NULL_POINTER_EXCEPTION_DETECTION bug.

[carlescufi]

This is essentially this issue: #33590