------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.31/arch/x86/kernel/cpu/mtrr/generic.c:456 generic_get_mtrr+0x11e/0x140()
Hardware name: GA-MA790GP-UD4H
mtrr: your BIOS has set up an incorrect mask, fixing it up.
Modules linked in: binfmt_misc ppdev snd_hda_codec_atihdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep lp amd64_edac_mod usblp shpchp snd_pcm_oss i2c_piix4 psmouse serio_raw snd_mixer_oss edac_core parport snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc iptable_filter ip_tables x_tables usb_storage ohci1394 ieee1394 radeon ttm drm r8169 i2c_algo_bit mii
Pid: 1530, comm: Xorg Not tainted 2.6.31-14-generic #48-Ubuntu
Call Trace:
 [<ffffffff8105e788>] warn_slowpath_common+0x78/0xb0
 [<ffffffff8105e81c>] warn_slowpath_fmt+0x3c/0x40
 [<ffffffff8117301a>] ? proc_reg_open+0x13a/0x1d0
 [<ffffffff810262be>] generic_get_mtrr+0x11e/0x140
 [<ffffffff810257e0>] ? mtrr_ioctl+0x0/0x690
 [<ffffffff81025e05>] mtrr_ioctl+0x625/0x690
 [<ffffffff8112c5ba>] ? do_filp_open+0x2ca/0xac0
 [<ffffffff810257e0>] ? mtrr_ioctl+0x0/0x690
 [<ffffffff81172bd7>] proc_reg_unlocked_ioctl+0x77/0x100
 [<ffffffff8112ddfd>] vfs_ioctl+0x1d/0xa0
 [<ffffffff81036419>] ? default_spin_lock_flags+0x9/0x10
 [<ffffffff8112e2e5>] file_ioctl+0x35/0x100
 [<ffffffff81137032>] ? alloc_fd+0x102/0x150
 [<ffffffff8112e6fb>] do_vfs_ioctl+0x34b/0x370
 [<ffffffff8112e7a1>] sys_ioctl+0x81/0xa0
 [<ffffffff81012002>] system_call_fastpath+0x16/0x1b
---[ end trace aa5d9c55145d4443 ]---