------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.38/drivers/gpu/drm/radeon/radeon_fence.c:248 radeon_fence_wait+0x36f/0x3e0 [radeon]()
Hardware name: GA-MA785GM-US2H
GPU lockup (waiting for 0x000EBEFB last fence id 0x000EBEF6)
Modules linked in: binfmt_misc snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev snd edac_core soundcore k10temp psmouse sp5100_tco i2c_piix4 serio_raw snd_page_alloc edac_mce_amd shpchp parport_pc lp parport radeon ttm usb_storage drm_kms_helper usbhid hid uas drm firewire_ohci ahci i2c_algo_bit firewire_core r8169 crc_itu_t pata_atiixp libahci
Pid: 1581, comm: compiz Tainted: G        W   2.6.38-8-generic #42-Ubuntu
Call Trace:
 [<ffffffff81065cef>] ? warn_slowpath_common+0x7f/0xc0
 [<ffffffff81065de6>] ? warn_slowpath_fmt+0x46/0x50
 [<ffffffffa015e6df>] ? radeon_fence_wait+0x36f/0x3e0 [radeon]
 [<ffffffff81087f30>] ? autoremove_wake_function+0x0/0x40
 [<ffffffffa015efc1>] ? radeon_sync_obj_wait+0x11/0x20 [radeon]
 [<ffffffffa00f6b0d>] ? ttm_bo_wait+0xfd/0x1b0 [ttm]
 [<ffffffffa00f97e6>] ? ttm_bo_move_accel_cleanup+0x1c6/0x260 [ttm]
 [<ffffffffa015f27f>] ? radeon_move_blit.clone.0+0x11f/0x180 [radeon]
 [<ffffffffa015f595>] ? radeon_move_ram_vram.clone.2+0x125/0x150 [radeon]
 [<ffffffff81124507>] ? vma_prio_tree_next+0x47/0x70
 [<ffffffffa00fc3db>] ? ttm_eu_list_ref_sub+0x3b/0x60 [ttm]
 [<ffffffffa015f7a8>] ? radeon_bo_move+0x1e8/0x1f0 [radeon]
 [<ffffffffa00f789e>] ? ttm_bo_handle_move_mem+0x12e/0x3d0 [ttm]
 [<ffffffffa00f8982>] ? ttm_bo_move_buffer+0x142/0x160 [ttm]
 [<ffffffffa00fc3db>] ? ttm_eu_list_ref_sub+0x3b/0x60 [ttm]
 [<ffffffffa00f8a36>] ? ttm_bo_validate+0x96/0x120 [ttm]
 [<ffffffffa016074c>] ? radeon_bo_list_validate+0x7c/0xe0 [radeon]
 [<ffffffffa01795d6>] ? radeon_cs_parser_relocs+0x236/0x270 [radeon]
 [<ffffffffa0179a61>] ? radeon_cs_ioctl+0xa1/0x1e0 [radeon]
 [<ffffffffa0069384>] ? drm_ioctl+0x3e4/0x4c0 [drm]
 [<ffffffff81131d4d>] ? handle_mm_fault+0x16d/0x250
 [<ffffffffa01799c0>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon]
 [<ffffffff815c6af8>] ? do_page_fault+0x258/0x540
 [<ffffffff8117648f>] ? do_vfs_ioctl+0x8f/0x360
 [<ffffffff811767f1>] ? sys_ioctl+0x91/0xa0
 [<ffffffff8100c002>] ? system_call_fastpath+0x16/0x1b
---[ end trace e45ef793924d5266 ]---