www.makemkv.com

I'm on MacOS 11.7.10 (20G1427) with a M1 MacMini.

I tried ripping a BR disc, which eventually failed.
I then cleaned the disc and tried ripping it again- my system rebooted.
A crash dump wasn't displayed though.

Are there any logs I can post for the developers?

It is my observation from using MakeMKV on a Mac that Apple is slowly letting macOS's support for optical discs rot. It seems that in those bits of the macOS filesystem there are lots of unhandled exceptions that cause a kernel panic. When that happens, the Mac will reboot.

Problematic discs seem to be the most likely thing to cause this to happen, especially when trying to cancel out of a rip that's going sideways.

I wasn’t trying to cancel out a bad rip. The rip had ended showing “FAILED”. I clicked OK to
Close the dialog and tried again.
That’s when the Mac rebooted.

Chances are it’s also a bug in the app- not checking a return value, not making sure a pointer is valid before using it.

Makemkv has plenty of problems, even though it’s ImProved over time. For one- you cannot cancel
Out of a rip- it just doesn’t acknowledge the cancel button. Very bad

I disagree, application errors don't cause kernel panics. Kernel errors cause kernel panics..
I realise makemkv uses some low level device commands at times but that's no excuse for the kernel to panic. Take the complaint to Apple.