------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.35/arch/x86/include/asm/processor.h:1005 read_measured_perf_ctrs+0x6c/0x80()
Hardware name: 1000H
Modules linked in: aes_i586 aes_generic binfmt_misc parport_pc ppdev vboxnetadp vboxnetflt vboxdrv snd_hda_codec_realtek snd_hda_intel joydev rt2860sta(C) snd_hda_codec snd_hwdep arc4 i915 snd_pcm rt2800pci rt2800lib snd_seq_midi rt2x00usb rt2x00pci crc_ccitt snd_rawmidi drm_kms_helper rt2x00lib snd_seq_midi_event mac80211 snd_seq drm snd_timer snd_seq_device eeepc_wmi sparse_keymap uvcvideo intel_agp cfg80211 snd psmouse videodev i2c_algo_bit v4l1_compat led_class serio_raw soundcore agpgart eeprom_93cx6 snd_page_alloc video output lp parport usb_storage atl1e
Pid: 56, comm: kondemand/0 Tainted: G         C  2.6.35-20-generic #29-Ubuntu
Call Trace:
 [<c014ac52>] warn_slowpath_common+0x72/0xa0
 [<c011b4bc>] ? read_measured_perf_ctrs+0x6c/0x80
 [<c011b4bc>] ? read_measured_perf_ctrs+0x6c/0x80
 [<c011b450>] ? read_measured_perf_ctrs+0x0/0x80
 [<c014aca2>] warn_slowpath_null+0x22/0x30
 [<c011b4bc>] read_measured_perf_ctrs+0x6c/0x80
 [<c011b450>] ? read_measured_perf_ctrs+0x0/0x80
 [<c017b342>] smp_call_function_single+0x72/0x130
 [<c011b3af>] cpufreq_get_measured_perf+0x2f/0xd0
 [<c04cd7ae>] ? cpufreq_cpu_get+0x8e/0xf0
 [<c01761ba>] ? get_cpu_iowait_time_us+0x6a/0xa0
 [<c04cd9ea>] __cpufreq_driver_getavg+0x6a/0x70
 [<c04d06b5>] dbs_check_cpu+0x75/0x2e0
 [<c04d09c7>] do_dbs_timer+0xa7/0xc0
 [<c05c652a>] ? schedule+0x37a/0x7a0
 [<c0161a4e>] run_workqueue+0x8e/0x150
 [<c04d0920>] ? do_dbs_timer+0x0/0xc0
 [<c0161b94>] worker_thread+0x84/0xe0
 [<c0165e10>] ? autoremove_wake_function+0x0/0x50
 [<c0161b10>] ? worker_thread+0x0/0xe0
 [<c01659e4>] kthread+0x74/0x80
 [<c0165970>] ? kthread+0x0/0x80
 [<c010363e>] kernel_thread_helper+0x6/0x10
---[ end trace 5105aaf30d3d9d7d ]---