------------[ 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: btrfs zlib_deflate crc32c libcrc32c ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs exportfs reiserfs dm_crypt binfmt_misc lp snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_usb_audio arc4 snd_pcm snd_hwdep snd_usbmidi_lib snd_seq_midi snd_seq_midi_event snd_seq snd_rawmidi ppdev rt61pci snd_timer crc_itu_t rt2x00pci rt2x00lib parport_pc led_class mac80211 parport asus_atk0110 snd_seq_device cfg80211 eeprom_93cx6 snd psmouse serio_raw soundcore snd_page_alloc squashfs aufs nls_iso8859_1 nls_cp437 vfat fat dm_raid45 xor vga16fb vgastate nouveau ttm drm_kms_helper usbhid hid usb_storage sata_via drm i2c_algo_bit pata_jmicron atl1 intel_agp mii
Pid: 78, comm: kondemand/3 Not tainted 2.6.35-2-generic #3-Ubuntu
Call Trace:
 [<ffffffff8105e68f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff8105e6ea>] warn_slowpath_null+0x1a/0x20
 [<ffffffff81026068>] read_measured_perf_ctrs+0x78/0x90
 [<ffffffff81025ff0>] ? read_measured_perf_ctrs+0x0/0x90
 [<ffffffff8109341c>] smp_call_function_single+0x8c/0x160
 [<ffffffff81025f7c>] cpufreq_get_measured_perf+0x2c/0xa0
 [<ffffffff81468168>] __cpufreq_driver_getavg+0x78/0x80
 [<ffffffff8146b45f>] dbs_check_cpu+0x7f/0x2c0
 [<ffffffff8146b778>] do_dbs_timer+0xd8/0x100
 [<ffffffff8146b6a0>] ? do_dbs_timer+0x0/0x100
 [<ffffffff81078695>] run_workqueue+0xc5/0x1a0
 [<ffffffff81078813>] worker_thread+0xa3/0x110
 [<ffffffff8107d510>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff81078770>] ? worker_thread+0x0/0x110
 [<ffffffff8107cfb6>] kthread+0x96/0xa0
 [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10
 [<ffffffff8107cf20>] ? kthread+0x0/0xa0
 [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10
---[ end trace 0037c549c2f6de0f ]---