------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.35/lib/kref.c:34 kref_get+0x2d/0x30()
Hardware name: TravelMate 8372
Modules linked in: cryptd aes_x86_64 aes_generic dm_crypt binfmt_misc parport_pc ppdev joydev snd_hda_codec_conexant 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 lib80211_crypt_tkip snd uvcvideo videodev v4l1_compat v4l2_compat_ioctl32 wl(P) soundcore snd_page_alloc lib80211 psmouse serio_raw intel_ips lp parport usb_storage i915 drm_kms_helper drm ahci tg3 libahci i2c_algo_bit video intel_agp output
Pid: 1237, comm: Xorg Tainted: P            2.6.35-19-generic #28-Ubuntu
Call Trace:
 [<ffffffff8105f72f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff8105f78a>] warn_slowpath_null+0x1a/0x20
 [<ffffffff812b96ad>] kref_get+0x2d/0x30
 [<ffffffffa007dfb1>] drm_gem_handle_create+0x91/0xb0 [drm]
 [<ffffffff8158622e>] ? mutex_lock+0x1e/0x50
 [<ffffffffa00e6fb8>] intel_user_framebuffer_create_handle+0x18/0x20 [i915]
 [<ffffffffa008862e>] drm_mode_getfb+0x7e/0xc0 [drm]
 [<ffffffffa007c433>] drm_ioctl+0x463/0x520 [drm]
 [<ffffffffa00885b0>] ? drm_mode_getfb+0x0/0xc0 [drm]
 [<ffffffff8116172d>] vfs_ioctl+0x3d/0xd0
 [<ffffffff81162001>] do_vfs_ioctl+0x81/0x340
 [<ffffffff81151792>] ? vfs_write+0x132/0x1a0
 [<ffffffff8125e18a>] ? security_capable+0x2a/0x30
 [<ffffffff8106b2b3>] ? capable+0x13/0x50
 [<ffffffff81162341>] sys_ioctl+0x81/0xa0
 [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b
---[ end trace 13e85e785b4adcff ]---