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

From: Ingo Molnar
Date: Sat Feb 04 2012 - 08:51:54 EST



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] <IRQ> [<ffffffff81065cc7>] warn_slowpath_common+0x7e/0x97
[89214.998379] [<ffffffff81065cf5>] warn_slowpath_null+0x15/0x17
[89215.004428] [<ffffffff8103f626>] x86_pmu_start+0x79/0xd4
[89215.010042] [<ffffffff810e30d1>] perf_adjust_freq_unthr_context.part.63+0xef/0x123
[89215.018123] [<ffffffff810e318c>] perf_event_task_tick+0x87/0x1c1
[89215.024463] [<ffffffff810a2370>] ? tick_nohz_handler+0xda/0xda
[89215.030595] [<ffffffff8108b819>] scheduler_tick+0xd1/0xf3
[89215.036296] [<ffffffff810720b0>] update_process_times+0x5e/0x6f
[89215.042512] [<ffffffff810a23e0>] tick_sched_timer+0x70/0x99
[89215.048387] [<ffffffff810823f9>] __run_hrtimer+0x8c/0x148
[89215.054087] [<ffffffff81082add>] hrtimer_interrupt+0xc1/0x18c

Thanks,

Ingo
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