On Thu, May 23, 2013 at 10:29:07AM -0400, Vince Weaver wrote:
> Hello,
>
> so now that I got past the OOPS in perf_mmap_close() I re-ran
> the fuzzer and quickly encountered the following WARNing.
>
> It happens here:
>
> static void x86_pmu_start(struct perf_event *event, int flags)
> {
> struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
> int idx = event->hw.idx;
>
> if (WARN_ON_ONCE(!(event->hw.state & PERF_HES_STOPPED)))
> return;
>
>
> Is it worth trying to come up with a reproducible case for this one?
>
> I never know how seriously to take WARN_ON_ONCE dumps.
Its not supposed to happen, you're trying to start an already running
event. I'll put it on the todo list.
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