------------[ 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: parport_pc ppdev snd_hda_codec_realtek rt2860sta(C) arc4 snd_hda_intel snd_hda_codec i915 snd_hwdep joydev rt2800pci snd_pcm rt2800lib rt2x00usb rt2x00pci crc_ccitt drm_kms_helper rt2x00lib snd_seq_midi mac80211 snd_rawmidi snd_seq_midi_event snd_seq drm uvcvideo snd_timer snd_seq_device cfg80211 intel_agp btusb videodev snd bluetooth psmouse v4l1_compat soundcore serio_raw agpgart eeepc_laptop i2c_algo_bit snd_page_alloc eeprom_93cx6 video sparse_keymap led_class output i2c_i801 lp parport atl1e Pid: 56, comm: kondemand/0 Tainted: G C 2.6.35-22-generic #33-Ubuntu Call Trace: [] warn_slowpath_common+0x72/0xa0 [] ? read_measured_perf_ctrs+0x6c/0x80 [] ? read_measured_perf_ctrs+0x6c/0x80 [] ? read_measured_perf_ctrs+0x0/0x80 [] warn_slowpath_null+0x22/0x30 [] read_measured_perf_ctrs+0x6c/0x80 [] ? read_measured_perf_ctrs+0x0/0x80 [] smp_call_function_single+0x72/0x130 [] cpufreq_get_measured_perf+0x2f/0xd0 [] ? cpufreq_cpu_get+0x8e/0xf0 [] ? get_cpu_iowait_time_us+0x6a/0xa0 [] __cpufreq_driver_getavg+0x6a/0x70 [] dbs_check_cpu+0x75/0x2e0 [] do_dbs_timer+0xa7/0xc0 [] ? schedule+0x37a/0x7a0 [] run_workqueue+0x8e/0x150 [] ? do_dbs_timer+0x0/0xc0 [] worker_thread+0x84/0xe0 [] ? autoremove_wake_function+0x0/0x50 [] ? worker_thread+0x0/0xe0 [] kthread+0x74/0x80 [] ? kthread+0x0/0x80 [] kernel_thread_helper+0x6/0x10 ---[ end trace 5b66b79828197ec7 ]---