Find the fault
• Type ‘f’ into the crash debugger to get the Fault
information
… If the category is KERN 4 then you are in business.
… KERN 4 simply says that a panic happened in a system
thread
… The actual panic, such as KERN-EXEC3, is hidden
• Type ‘i’ into the crash debugger to get information
about the real panic reason
… Sometimes even this doesn’t work - a non-system critical
thread which crashes can cause the process to exit if it is
process critical e.g. the main thread
… If another thread in the process is marked as system critical
this will take down the platform.
• A fool proof method of finding the real panic is to look
at the output from the KPanic debug tracing