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Kernel debugger on RockPro64

It seems that even when not using awge0, a RockPro64 will lock hard after a bit of compiling (-current from today, USB root, axe0 USB-ethernet). However, it doesn't seem to be possible to get in to the kernel debugger via the serial console via a traditional break, so I set hw.cnmagic to ~~ and verified it works when the system isn't locked.

However, after lockup, there's no getting in to the kernel debugger. How does one go about diagnosing this?


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