* Ingo Molnar <mingo@xxxxxxx> wrote: > cool! :) > > (hm, could anyone please resend Nick's original mail? The original one > is not in my lkml folder nor on lkml.org - only the quoted one.) ok, got the mail now now: | | Annoyed this wasn't a crazy obscure error in the algorithm I could | | fix :) [...] Paul recently ran a formal proof against all sorts of RCU details (and found and fixed a few obscure races that way that no-one ever triggered), so i'd be quite surprised if we found anything in the core algorithm :-) | | [...] I spent all day debugging it and had to make a special test | | case (rcutorture didn't seem to trigger it), and a big RCU state | | logging infrastructure to log millions of RCU state transitions and | | events. Oh well. nice debugging! Acked-by: Ingo Molnar <mingo@xxxxxxx> i'm wondering why rcutorture didnt trigger it. I do run !HOTPLUG + RCU_PREEMPT kernels and never saw this. Nor did Paul. That aspect is weird. Ingo -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
