------------[ 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: btrfs zlib_deflate crc32c libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs exportfs reiserfs binfmt_misc parport_pc ppdev vboxdrv snd_hda_codec_realtek rt2860sta(C) joydev arc4 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm rt2800pci snd_seq_midi i915 rt2800lib rt2x00usb rt2x00pci crc_ccitt rt2x00lib snd_rawmidi snd_seq_midi_event mac80211 drm_kms_helper snd_seq snd_timer snd_seq_device drm uvcvideo eeepc_wmi sparse_keymap cfg80211 psmouse videodev intel_agp snd serio_raw v4l1_compat led_class soundcore agpgart i2c_algo_bit eeprom_93cx6 snd_page_alloc video output lp parport atl1e
Pid: 435, comm: kondemand/0 Tainted: G         C  2.6.35-19-generic #25-Ubuntu
Call Trace:
 [<c014a812>] warn_slowpath_common+0x72/0xa0
 [<c011b0ec>] ? read_measured_perf_ctrs+0x6c/0x80
 [<c011b0ec>] ? read_measured_perf_ctrs+0x6c/0x80
 [<c011b080>] ? read_measured_perf_ctrs+0x0/0x80
 [<c014a862>] warn_slowpath_null+0x22/0x30
 [<c011b0ec>] read_measured_perf_ctrs+0x6c/0x80
 [<c011b080>] ? read_measured_perf_ctrs+0x0/0x80
 [<c017adf2>] smp_call_function_single+0x72/0x130
 [<c011afdf>] cpufreq_get_measured_perf+0x2f/0xd0
 [<c04cd03e>] ? cpufreq_cpu_get+0x8e/0xf0
 [<c0175c6a>] ? get_cpu_iowait_time_us+0x6a/0xa0
 [<c04cd27a>] __cpufreq_driver_getavg+0x6a/0x70
 [<c04cff45>] dbs_check_cpu+0x75/0x2e0
 [<c04d0257>] do_dbs_timer+0xa7/0xc0
 [<c05c5c8a>] ? schedule+0x37a/0x7a0
 [<c016155e>] run_workqueue+0x8e/0x150
 [<c04d01b0>] ? do_dbs_timer+0x0/0xc0
 [<c01616a4>] worker_thread+0x84/0xe0
 [<c0165920>] ? autoremove_wake_function+0x0/0x50
 [<c0161620>] ? worker_thread+0x0/0xe0
 [<c01654f4>] kthread+0x74/0x80
 [<c0165480>] ? kthread+0x0/0x80
 [<c010363e>] kernel_thread_helper+0x6/0x10
---[ end trace 073e0f67b7d15685 ]---