I am doing some development on nRF5340 and I experienced MPU faults. We tracked down the root cause and this led to a PR https://github.com/zephyrproject-rtos/zephyr/pull/111518 . The reason I am sharing here, because the issue seems to manifest when using HCI and Bluetooth stack, but not caused by these. I have no access to client reports, reporting spooky crashes with their firmware, therefore I advice Nordic to follow the PR. In case you see some similar spooky crashes, just do it a try, very easy to apply the small change for a test to see if it fixes or not.
To avoid the effect of this bug, some workarounds may live happily in deployments, or just simply doesn't trigger the conditions. Therefore, may make sense to follow in the long run, if statistically will improve stability in the future, or has no measurable effect.
