------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.28/fs/buffer.c:1186 mark_buffer_dirty+0x84/0xb0()
Modules linked in: ath_pci isofs udf crc_itu_t wlan_ccmp usb_storage usbhid gspca_spca561 gspca_main compat_ioctl32 videodev v4l1_compat binfmt_misc ppdev bridge stp bnep kvm_intel kvm kqemu input_polldev lp parport joydev snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm pcmcia snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi mmc_block snd_seq_midi_event thinkpad_acpi video wlan_scan_sta yenta_socket snd_seq snd_timer snd_seq_device led_class psmouse ath_rate_sample output iTCO_wdt iTCO_vendor_support ricoh_mmc sdhci_pci sdhci rsrc_nonstatic pcmcia_core snd soundcore snd_page_alloc btusb intel_agp nvram pcspkr serio_raw nvidia(P) wlan ath_hal(P) ohci1394 ieee1394 e1000e vesafb fbcon tileblit font bitblit softcursor [last unloaded: ath_pci]
Pid: 3828, comm: xfdesktop Tainted: P           2.6.28-11-generic #42-Ubuntu
Call Trace:
 [<ffffffff802509bf>] warn_on_slowpath+0x5f/0x90
 [<ffffffff8022f669>] ? default_spin_lock_flags+0x9/0x10
 [<ffffffff8069bf36>] ? printk+0x67/0x69
 [<ffffffff8030cd14>] mark_buffer_dirty+0x84/0xb0
 [<ffffffff80358680>] ext3_commit_super+0x60/0x90
 [<ffffffff8035ad47>] ext3_handle_error+0x57/0xd0
 [<ffffffff8035aee2>] ext3_error+0xa2/0xb0
 [<ffffffff8030c190>] ? sync_buffer+0x0/0x50
 [<ffffffff8069cf94>] ? out_of_line_wait_on_bit+0x74/0x90
 [<ffffffff80268970>] ? wake_bit_function+0x0/0x40
 [<ffffffff80356b92>] ext3_find_entry+0x342/0x460
 [<ffffffff80356cfd>] ext3_lookup+0x4d/0x100
 [<ffffffff802fb2a2>] ? d_alloc+0x162/0x1c0
 [<ffffffff802f256e>] real_lookup+0xee/0x170
 [<ffffffff802f2698>] do_lookup+0xa8/0x100
 [<ffffffff802f2cfd>] __link_path_walk+0x60d/0xc20
 [<ffffffff80300fe1>] ? mntput_no_expire+0x31/0x150
 [<ffffffff802f3836>] path_walk+0x66/0xd0
 [<ffffffff802f3a2b>] do_path_lookup+0xdb/0x200
 [<ffffffff802f14b5>] ? getname+0x45/0xb0
 [<ffffffff802f48db>] user_path_at+0x7b/0xb0
 [<ffffffff802d290e>] ? free_pages_and_swap_cache+0x7e/0xa0
 [<ffffffff802ebb85>] vfs_lstat_fd+0x25/0x60
 [<ffffffff8022f669>] ? default_spin_lock_flags+0x9/0x10
 [<ffffffff802ebbe7>] sys_newlstat+0x27/0x50
 [<ffffffff8026ccd9>] ? up_write+0x9/0x10
 [<ffffffff802caecd>] ? sys_munmap+0x5d/0x80
 [<ffffffff8021253a>] system_call_fastpath+0x16/0x1b
---[ end trace c0901043cc5a9ff7 ]---