If we change the configuration to run on a single core, the problem disappears. It seems to be an issue with cross-core synchronisation.

Its also worth noting that all the tasks on CORE_0 appear to be running OK. It is only one core that locks up.

Unfortunately it's not easy to create a minimal working example, because it seems to only occur when there processor has lots of work to do. After some further debugging, we have found a little more information, which I have described below: ----------------------------------------------------------...

This is on an ESP32S3. The watchdog is set to 5 seconds, but it gets stuck in a loop once it kicks in, and then the other core is always in the IDLE loop (since the task scheduler is disabled during flash operations). This is all using the internal flash.

Hi all, I'm facing a challenging issue with an ESP32 project (using ESP_IDF) that involves Inter-Processor Call (IPC) tasks sometimes locking up, subsequently triggering the watchdog. The problem seems to occur within the spi_flash_op_block_func , specifically in a while loop that waits for flash op...