Re: WARNING: at arch/x86/kernel/cpu/perf_event.c:989

[Stephane Eranian]

On Sat, Feb 4, 2012 at 7:09 PM, Stephane Eranian <eranian@xxxxxxxxxx> wrote:
> I am working on it. It is hard to reproduce for me.
>
What did you run to trigger this warning? What system is this on?

> On Sat, Feb 4, 2012 at 2:51 PM, Ingo Molnar <mingo@xxxxxxx> wrote:
>>
>> there's yet another one triggering at:
>>
>> [89214.962603] ------------[ cut here ]------------
>> [89214.967441] WARNING: at arch/x86/kernel/cpu/perf_event.c:995 x86_pmu_start+0x79/0xd4()
>> [89214.975825] Hardware name: X8DTN
>> [89214.979268] Modules linked in:
>> [89214.982560] Pid: 0, comm: swapper/6 Not tainted 3.3.0-rc2-tip+ #1
>> [89214.988865] Call Trace:
>> [89214.991533] Â<IRQ> Â[<ffffffff81065cc7>] warn_slowpath_common+0x7e/0x97
>> [89214.998379] Â[<ffffffff81065cf5>] warn_slowpath_null+0x15/0x17
>> [89215.004428] Â[<ffffffff8103f626>] x86_pmu_start+0x79/0xd4
>> [89215.010042] Â[<ffffffff810e30d1>] perf_adjust_freq_unthr_context.part.63+0xef/0x123
>> [89215.018123] Â[<ffffffff810e318c>] perf_event_task_tick+0x87/0x1c1
>> [89215.024463] Â[<ffffffff810a2370>] ? tick_nohz_handler+0xda/0xda
>> [89215.030595] Â[<ffffffff8108b819>] scheduler_tick+0xd1/0xf3
>> [89215.036296] Â[<ffffffff810720b0>] update_process_times+0x5e/0x6f
>> [89215.042512] Â[<ffffffff810a23e0>] tick_sched_timer+0x70/0x99
>> [89215.048387] Â[<ffffffff810823f9>] __run_hrtimer+0x8c/0x148
>> [89215.054087] Â[<ffffffff81082add>] hrtimer_interrupt+0xc1/0x18c
>>
>> Thanks,
>>
>> Â Â Â ÂIngo
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