esp_hid_host demo: printing in callback causes stackoverflow or freeze (IDFGH-6369)

[ChrisIdema]

esp-idf/examples/bluetooth/esp_hid_host/main/esp_hid_host_main.c

Line 49 in 2ee9140

case ESP_HIDH_INPUT_EVENT: {

When connecting a mouse and moving it around very fast for a few seconds causes a stack overflow or a freeze.
Message when a stack overflow is detected:

ERROR A stack overflow in task esp_bt_hidh_eve has been detected.

Increasing the stack size of "esp_bt_hidh_events" task from 2048 to 4096 prevents a stack overflow when using a BT keyboard, but a BT mouse generates more events and still triggers a stack overflow or freeze.

A simple workaround I used is to check the system time and to only print after 200 milliseconds have passed since the last printing in this callback.

[igrr]

@ChrisIdema I think this should be addressed by d1c8c26 and 5266d81.

Sorry to ask the question from the issue template, but which IDF version are you using?

[ChrisIdema]

@igrr
I use the same version of IDF as from the example. In this case commit 2ee9140 . I think that is close to 4.3.1

Like I wrote d1c8c26 doesn't fix the stackoverflow for the mouse. Only for the keyboard.
I will check out 5266d81 .

Edit, I don't have event_stack_size in my esp_hidh_config_t. So I cannot apply that fix. The newer version of the app is worse as it doesn't work at all: #8027

[jack0c]

@ChrisIdema Can you try ade22c9 which fix a heap issue?

[ChrisIdema]

I did not try ade22c9. I'm not working on this project anymore.

[Alvin1Zhang]

@ChrisIdema Thanks for reporting and sharing the updates, feel free to reopen.