Citra GDB-stub: How to break on unmapped reads?

I have a 3ds-homebrew that I want to debug. When running the program, I get Citra log messages like:

[ 244.837408] HW.Memory core/memory.cpp:Read:189: unmapped Read32 @ 0x00775D38

Now, I wanted to check with GDB which part of the code is actually causing the unmapped read, so I created a watchpoint in GDB with

rwatch *0x00775D38

However, GDB does not break when the program tries to access this address.
How can I debug unmapped reads/writes with Citra?

In order for us to provide better support, we need to see the log generated by Citra. This guide will walk you through how you can obtain the log file: How to Upload the Log File.

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