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SubjectRe: perf/tracepoint: another fuzzer generated lockup
On Fri, 8 Nov 2013, Frederic Weisbecker wrote:
>
> There seem to be a loop that takes too long in intel_pmu_handle_irq(). Your two
> previous reports seemed to suggest that lbr is involved, but not this one.

I may be wrong but I think everything between <NMI> and <EOE> is just
noise from the NMI perf-event watchdog timer kicking in.

Why that code would be reading the LBR registers I don't know.

Vince




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