Re: [PATCH 00/12] perf: more fixes

[Borislav Petkov]

On Fri, Mar 11, 2016 at 03:23:46PM +0100, Peter Zijlstra wrote:
> The below seems to fix the IBS issue tickled by syz-kaller on my
> machine. I've not yet ran perf-fuzzer, which seems able to tickle a
> different set of bugs.
> 
> ---
> Subject: perf, amb: Fix IBS throttle

		 amd

but you know already.

> 
> When the IBS IRQ handler get a !0 return from perf_event_overflow;
> meaning it should throttle the event, it only disables it, it doesn't
> call perf_ibs_stop().
> 
> This confuses the state machine, as we'll use pmu::start() ->
> perf_ibs_start() to unthrottle.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>

Tested-by: Borislav Petkov <bp@xxxxxxx>

I'll leave it running for an additional hour but if I haven't said
anything until then, all is good.

-- 
Regards/Gruss,
    Boris.

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