How to check if HW Stack Protection is enabled?

RE: How to check if HW Stack Protection is enabled?

Sigurd Hellesvik — Mon, 17 Mar 2025 09:23:24 GMT

[quote user="VinothBrose"]Where can I see these log messages? I'm debugging with nrf Connect on VS Code.[/quote]

I see the logs on UART. See Logging. Also, getting logs from an application is among the first steps to get started with the nRF Connect SDK in DevAcademy fundamentals. Follow this course to learn how to see the logs in the VS Code extension. (Using the nRF Serial Terminal)

[quote user="VinothBrose"]A small observation. Stack Overflow error works only with MPU?[/quote]

See https://github.com/zephyrproject-rtos/zephyr/discussions/28866

RE: How to check if HW Stack Protection is enabled?

AlphaBeta — Mon, 17 Mar 2025 08:46:20 GMT

A small observation. Stack Overflow error works only with MPU?

Where can I see these log messages? I'm debugging with nrf Connect on VS Code.

RE: How to check if HW Stack Protection is enabled?

Sigurd Hellesvik — Mon, 17 Mar 2025 08:01:49 GMT

CONFIG_HW_STACK_PROTECTION seems to be enabled by default for me, so I tried to explicitly set it to "n".
Here are logs from a test I did with (first) and without (last) CONFIG_HW_STACK_PROTECTION:

RE: How to check if HW Stack Protection is enabled?

AlphaBeta — Fri, 14 Mar 2025 13:38:00 GMT

In both cases, I get usage fault exception. There is NO indication that a stack overflow error has been caught.

RE: How to check if HW Stack Protection is enabled?

Sigurd Hellesvik — Fri, 14 Mar 2025 11:34:34 GMT

Hi,

I suggest trying to create a stack overflow in a test project. Then run the stack overflow both with and without this config and observe the difference.

See for example https://stackoverflow.com/questions/392859/generate-a-stack-overflow on how to do this.

Regards,
Sigurd Hellesvik