In ncs1.7.1, I’m struggling with a problem about hard fault on nRF9160, but I have no idea to slove the problem.
nRF52840 transmits data to nRF9160 via UART0, the baudrate is 1000000 with flow control, After running a few minutes, nRF9160 crash.
The following pictures are the detailed error message.


I guess occurred stack overflow, but not sure. How to monitor stack usage in real time?