------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.35/arch/x86/include/asm/processor.h:1005 read_measured_perf_ctrs+0x78/0x90()
Hardware name: System Product Name
Modules linked in: binfmt_misc vboxnetadp vboxnetflt vboxdrv nfs lockd fscache nfs_acl auth_rpcgss sunrpc parport_pc ppdev xfs exportfs snd_hda_codec_via nvidia(P) snd_hda_intel snd_seq_midi snd_hda_codec snd_rawmidi snd_hwdep snd_seq_midi_event joydev snd_pcm snd_seq snd_seq_device snd_timer snd asus_atk0110 soundcore snd_page_alloc lp parport raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq usbhid hid ahci async_tx libahci pata_jmicron r8169 mii raid1 raid0 multipath linear
Pid: 109, comm: kondemand/0 Tainted: P            2.6.35-22-generic #33-Ubuntu
Call Trace:
 [<ffffffff8106077f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff810607da>] warn_slowpath_null+0x1a/0x20
 [<ffffffff81026678>] read_measured_perf_ctrs+0x78/0x90
 [<ffffffff81026600>] ? read_measured_perf_ctrs+0x0/0x90
 [<ffffffff8109552c>] smp_call_function_single+0x8c/0x160
 [<ffffffff8102658c>] cpufreq_get_measured_perf+0x2c/0xa0
 [<ffffffff8146c8a8>] __cpufreq_driver_getavg+0x78/0x80
 [<ffffffff8146fb7f>] dbs_check_cpu+0x7f/0x2c0
 [<ffffffff8146fe98>] do_dbs_timer+0xd8/0x100
 [<ffffffff8146fdc0>] ? do_dbs_timer+0x0/0x100
 [<ffffffff8107a765>] run_workqueue+0xc5/0x1a0
 [<ffffffff8107a8e3>] worker_thread+0xa3/0x110
 [<ffffffff8107f610>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff8107a840>] ? worker_thread+0x0/0x110
 [<ffffffff8107f0b6>] kthread+0x96/0xa0
 [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10
 [<ffffffff8107f020>] ? kthread+0x0/0xa0
 [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10
---[ end trace a9cdf18fdeddf87b ]---