------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.35/lib/kref.c:34 kref_get+0x21/0x30()
Hardware name: Aspire 5720Z    
Modules linked in: binfmt_misc parport_pc ppdev snd_hda_codec_realtek vga16fb vgastate snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event joydev i915 snd_seq snd_timer r852 sm_common drm_kms_helper nand arc4 uvcvideo videodev snd_seq_device v4l1_compat drm psmouse nand_ids nand_ecc ath5k mac80211 snd ath serio_raw mtd intel_agp soundcore cfg80211 snd_page_alloc agpgart i2c_algo_bit coretemp lp parport video output lirc_ene0100(+) lirc_dev usbhid hid sdhci_pci firewire_ohci ahci sdhci led_class libahci firewire_core crc_itu_t tg3
Pid: 1145, comm: Xorg Tainted: G      D     2.6.35-6-generic #9-Ubuntu
Call Trace:
 [<c014b5a2>] warn_slowpath_common+0x72/0xa0
 [<c0357ba1>] ? kref_get+0x21/0x30
 [<c0357ba1>] ? kref_get+0x21/0x30
 [<c014b5f2>] warn_slowpath_null+0x22/0x30
 [<c0357ba1>] kref_get+0x21/0x30
 [<f85c32a3>] drm_gem_handle_create+0x83/0xa0 [drm]
 [<c05cc4c9>] ? mutex_lock+0x19/0x40
 [<f86a5a35>] intel_user_framebuffer_create_handle+0x15/0x20 [i915]
 [<f85cc909>] drm_mode_getfb+0x69/0xa0 [drm]
 [<c01c64ad>] ? do_blk_trace_setup+0x4d/0x2f0
 [<f85c1997>] drm_ioctl+0x1a7/0x400 [drm]
 [<c01c64ad>] ? do_blk_trace_setup+0x4d/0x2f0
 [<f85cc8a0>] ? drm_mode_getfb+0x0/0xa0 [drm]
 [<c03300f7>] ? apparmor_file_permission+0x17/0x20
 [<c0303fd4>] ? security_file_permission+0x14/0x20
 [<c0219294>] ? rw_verify_area+0x64/0xe0
 [<c01c64ad>] ? do_blk_trace_setup+0x4d/0x2f0
 [<c02273c2>] vfs_ioctl+0x32/0xb0
 [<f85c17f0>] ? drm_ioctl+0x0/0x400 [drm]
 [<c0227c39>] do_vfs_ioctl+0x79/0x2d0
 [<c0219070>] ? do_sync_write+0x0/0xe0
 [<c0227ef7>] sys_ioctl+0x67/0x80
 [<c01c64ad>] ? do_blk_trace_setup+0x4d/0x2f0
 [<c05cdc1c>] syscall_call+0x7/0xb
 [<c01c64ad>] ? do_blk_trace_setup+0x4d/0x2f0
 [<c01c64ad>] ? do_blk_trace_setup+0x4d/0x2f0
---[ end trace c562579174d65606 ]---