KDB and KDB_TRACE are now included into GENERIC kernels on stable/8 branch. This should not break anything for you. But if you include GENERIC into your custom kernel config and you already have the above options there, then you will get warnings about duplicate options. You can simply remove the second copy. The purpose of the change is to get a stack trace from a panic or a trap in a default installation. We still don't configure any debugger backend by default. -- Andriy Gapon