------------[ 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: P5Q-E
Modules linked in: parport_pc ppdev binfmt_misc dm_crypt snd_hda_codec_analog nvidia(P) snd_usb_audio snd_usbmidi_lib snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event gspca_sn9c20x snd_seq gspca_main videodev v4l1_compat v4l2_compat_ioctl32 snd_timer snd_seq_device asus_atk0110 joydev wacom snd psmouse soundcore snd_page_alloc serio_raw lp parport raid10 raid1 raid0 multipath linear dm_raid45 btrfs zlib_deflate crc32c libcrc32c hid_microsoft raid456 async_pq async_xor xor async_memcpy async_raid6_recov pata_marvell raid6_pq async_tx usbhid hid firewire_ohci firewire_core skge sata_sil crc_itu_t sky2 intel_agp ahci libahci
Pid: 69, comm: kondemand/0 Tainted: P            2.6.35-20-generic #29-Ubuntu
Call Trace:
 [<ffffffff8106075f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff810607ba>] warn_slowpath_null+0x1a/0x20
 [<ffffffff81026678>] read_measured_perf_ctrs+0x78/0x90
 [<ffffffff81026600>] ? read_measured_perf_ctrs+0x0/0x90
 [<ffffffff8109550c>] smp_call_function_single+0x8c/0x160
 [<ffffffff8102658c>] cpufreq_get_measured_perf+0x2c/0xa0
 [<ffffffff8146c428>] __cpufreq_driver_getavg+0x78/0x80
 [<ffffffff8146f6ff>] dbs_check_cpu+0x7f/0x2c0
 [<ffffffff8146fa18>] do_dbs_timer+0xd8/0x100
 [<ffffffff8146f940>] ? do_dbs_timer+0x0/0x100
 [<ffffffff8107a745>] run_workqueue+0xc5/0x1a0
 [<ffffffff8107a8c3>] worker_thread+0xa3/0x110
 [<ffffffff8107f5f0>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff8107a820>] ? worker_thread+0x0/0x110
 [<ffffffff8107f096>] kthread+0x96/0xa0
 [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10
 [<ffffffff8107f000>] ? kthread+0x0/0xa0
 [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10
---[ end trace cca40bafe6c61ed6 ]---