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) <pet...@infradead.org>
Tested-by: Borislav Petkov <b...@suse.de>
I'll leave it running for an additional hour but if I haven't said
anything until then, all is good.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
