On Tue, 10 Apr 2018, Nicholas Piggin wrote: > On Tue, 10 Apr 2018 09:42:29 +0200 (CEST) > Thomas Gleixner <t...@linutronix.de> wrote: > > > Thomas do you have any ideas on what we might look for, or if we can add > > > some BUG_ON()s to catch this at its source? > > > > Not really. Tracing might be a more efficient tool that random BUG_ONs. > > Sure, we could try that. Any suggestions? timer events?
timer, hrtimer and the tick-sched stuff should be a good start. And make sure to freeze the trace once you hit the fault case. tracing_off() is your friend. Thanks, tglx