[ 47.296031] ------------[ cut here ]------------
[ 47.300013] WARNING: CPU: 0 PID: 2821 at arch/x86/kernel/cpu/perf_event.c:1076 x86_pmu_start+0x46/0xee()
[ 47.300013] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg mcs7830 usbnet evdev ohci_pci ohci_hcd pcspkr i2c_nforce2 psmouse serio_raw coretemp video wmi button acpi_cpufreq processor thermal_sys ehci_pci ehci_hcd sg sd_mod usbcore usb_common
[ 47.300013] CPU: 0 PID: 2821 Comm: out Not tainted 3.14.0-rc2 #2
[ 47.300013] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 47.300013] 0000000000000000 ffffffff817f25ad ffffffff814e746b 0000000000000000
[ 47.300013] ffffffff8103bf1c ffff880037e62420 ffffffff81012126 ffff88011fc13400
[ 47.300013] ffff88011b2b1800 ffff88011fc0b940 0000000000000021 0000000000000000
[ 47.300013] Call Trace:
[ 47.300013] [] ? dump_stack+0x41/0x56
[ 47.300013] [] ? warn_slowpath_common+0x79/0x92
[ 47.300013] [] ? x86_pmu_start+0x46/0xee
[ 47.300013] [] ? x86_pmu_start+0x46/0xee
[ 47.300013] [] ? x86_pmu_enable+0x1d3/0x285
[ 47.300013] [] ? perf_event_context_sched_in+0x6d/0x8d
[ 47.300013] [] ? __perf_event_task_sched_in+0x21/0x108
[ 47.300013] [] ? idle_balance+0x11a/0x157
[ 47.300013] [] ? finish_task_switch+0x40/0xa5
[ 47.300013] [] ? __schedule+0x46a/0x4bd
[ 47.300013] [] ? schedule_timeout+0x1d/0xb4
[ 47.300013] [] ? generic_exec_single+0x3f/0x52
[ 47.300013] [] ? perf_reg_value+0x4c/0x4c
[ 47.300013] [] ? smp_call_function_single+0xdc/0xf2
[ 47.300013] [] ? dump_stack+0x56/0x56
[ 47.300013] [] ? __wait_for_common+0xce/0x14a
[ 47.300013] [] ? try_to_wake_up+0x19a/0x19a
[ 47.300013] [] ? get_tracepoint+0x20/0x53
[ 47.300013] [] ? T.944+0x1c8/0x1c8
[ 47.300013] [] ? wait_rcu_gp+0x3f/0x46
[ 47.300013] [] ? wait_rcu_gp+0x46/0x46
[ 47.300013] [] ? perf_trace_event_unreg+0x2e/0xbd
[ 47.300013] [] ? perf_trace_destroy+0x2e/0x3b
[ 47.300013] [] ? __free_event+0x2d/0x52
[ 47.300013] [] ? perf_event_release_kernel+0x74/0x7b
[ 47.300013] [] ? perf_release+0x10/0x14
[ 47.300013] [] ? __fput+0xdf/0x1a4
[ 47.300013] [] ? task_work_run+0x7f/0x96
[ 47.300013] [] ? int_signal+0x12/0x17
[ 47.300013] ---[ end trace 9ccad2f02057baa8 ]---