On Thu, 22 Jan 2015, Stephane Eranian wrote:
> Fix looks like this:
>
> diff --git a/arch/x86/kernel/cpu/perf_event_intel_rapl.c
> b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
> index 6e434f8..c4bb8b8 100644
> --- a/arch/x86/kernel/cpu/perf_event_intel_rapl.c
> +++ b/arch/x86/kernel/cpu/perf_eve
On Thu, Jan 22, 2015 at 1:39 PM, Stephane Eranian
wrote:
> On Thu, Jan 22, 2015 at 2:17 AM, Peter Zijlstra wrote:
>> On Wed, Jan 21, 2015 at 09:13:11PM -0800, Stephane Eranian wrote:
>>> Vince,
>>>
>>> On Wed, Jan 21, 2015 at 10:55 AM, Vince Weaver
>>> wrote:
>>> > Hello
>>> >
>>> > on my haswe
On Thu, Jan 22, 2015 at 2:17 AM, Peter Zijlstra wrote:
> On Wed, Jan 21, 2015 at 09:13:11PM -0800, Stephane Eranian wrote:
>> Vince,
>>
>> On Wed, Jan 21, 2015 at 10:55 AM, Vince Weaver
>> wrote:
>> > Hello
>> >
>> > on my haswell system, running 3.19-rc5, and with
>> > echo "0" > /proc/
On Wed, Jan 21, 2015 at 09:13:11PM -0800, Stephane Eranian wrote:
> Vince,
>
> On Wed, Jan 21, 2015 at 10:55 AM, Vince Weaver
> wrote:
> > Hello
> >
> > on my haswell system, running 3.19-rc5, and with
> > echo "0" > /proc/sys/kernel/perf_event_paranoid
> >
> > I can easily crash my syst
Vince,
On Wed, Jan 21, 2015 at 10:55 AM, Vince Weaver wrote:
> Hello
>
> on my haswell system, running 3.19-rc5, and with
> echo "0" > /proc/sys/kernel/perf_event_paranoid
>
> I can easily crash my system with the attached test program that simply
> opens a RAPL event and then closes it.
Hello
on my haswell system, running 3.19-rc5, and with
echo "0" > /proc/sys/kernel/perf_event_paranoid
I can easily crash my system with the attached test program that simply
opens a RAPL event and then closes it.
This bug was found by the perf_fuzzer.
It looks like somehow rapl_pmu get
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