[  717.332000] Registering unionfs 1.4
[  717.332000] unionfs: debugging is not enabled
[ 4673.104000] BUG: unable to handle kernel NULL pointer dereference at virtual address 00000004
[ 4673.104000]  printing eip:
[ 4673.104000] f8e03c42
[ 4673.104000] *pde = 00000000
[ 4673.104000] Oops: 0000 [#1]
[ 4673.104000] SMP 
[ 4673.104000] Modules linked in: unionfs nfs ipv6 af_packet i915 drm rfcomm l2cap bluetooth vboxdrv nfsd exportfs lockd sunrpc ppdev acpi_cpufreq cpufreq_stats cpufreq_userspace cpufreq_powersave cpufreq_ondemand freq_table cpufreq_conservative video asus_acpi sbs container dock button ac battery parport_pc lp parport snd_hda_intel joydev snd_pcm_oss snd_pcm snd_mixer_oss snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device sr_mod cdrom snd soundcore pcspkr intel_agp agpgart psmouse serio_raw snd_page_alloc shpchp pci_hotplug evdev ext3 jbd mbcache sg sd_mod 8139cp usbhid hid ata_piix ahci 8139too mii ata_generic libata scsi_mod ehci_hcd uhci_hcd usbcore thermal processor fan fuse apparmor commoncap
[ 4673.104000] CPU:    1
[ 4673.104000] EIP:    0060:[<f8e03c42>]    Not tainted VLI
[ 4673.104000] EFLAGS: 00210246   (2.6.22-14-generic #1)
[ 4673.104000] EIP is at nfs_lookup+0xd2/0x260 [nfs]
[ 4673.104000] eax: 00000000   ebx: f8e27f80   ecx: 5b5673e4   edx: c8d18d80
[ 4673.104000] esi: 00000000   edi: cf62e4c8   ebp: 00000000   esp: cbc13ca8
[ 4673.104000] ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0068
[ 4673.104000] Process nautilus (pid: 7248, ti=cbc12000 task=f69c59f0 task.ti=cbc12000)
[ 4673.104000] Stack: cbc13cbc cbc13d9c c8d18d80 c8d18d80 000003e8 00000006 00000006 00001000 
[ 4673.104000]        00000000 00000000 f4a2a3d9 5b5673e4 00000001 00008124 00000001 000003e8 
[ 4673.104000]        000003e8 00000000 00000000 00000000 00000000 00000000 f4a2a3d9 5b5673e4 
[ 4673.104000] Call Trace:
[ 4673.104000]  [<f8e043b2>] nfs_access_free_entry+0x12/0x20 [nfs]
[ 4673.104000]  [<f8e047c1>] nfs_permission+0xe1/0x1f0 [nfs]
[ 4673.104000]  [<c0192759>] d_alloc+0x109/0x190
[ 4673.104000]  [<c0189726>] lookup_one_len_nd+0xe6/0x110
[ 4673.104000]  [<f8e79064>] make_dir_opaque+0x64/0xd0 [unionfs]
[ 4673.104000]  [<f8e81680>] unionfs_rename+0x7c0/0x9f0 [unionfs]
[ 4673.104000]  [<c0188a8f>] vfs_rename+0x12f/0x480
[ 4673.104000]  [<c0188dba>] vfs_rename+0x45a/0x480
[ 4673.104000]  [<c01890a5>] lookup_hash+0x95/0xb0
[ 4673.104000]  [<c018ac76>] sys_renameat+0x1e6/0x220
[ 4673.104000]  [<c0192937>] dput+0x87/0x100
[ 4673.104000]  [<c0183cff>] sys_stat64+0xf/0x30
[ 4673.104000]  [<c01475e7>] sys_futex+0x97/0x100
[ 4673.104000]  [<c018acd7>] sys_rename+0x27/0x30
[ 4673.104000]  [<c01041d2>] sysenter_past_esp+0x6b/0xa9
[ 4673.104000]  [<c02f0000>] clip_ioctl+0x3a0/0x510
[ 4673.104000]  =======================
[ 4673.104000] Code: 24 0c 8d 57 1c 89 0c 24 8d 8c 24 a6 00 00 00 ff 53 20 31 d2 83 f8 fe 74 6f 85 c0 89 c6 0f 88 0a 01 00 00 8b 54 24 0c 8b 4c 24 5c <8b> 6d 04 8b 82 98 00 00 00 8b 98 64 01 00 00 8b 53 7c 8d 73 78 
[ 4673.104000] EIP: [<f8e03c42>] nfs_lookup+0xd2/0x260 [nfs] SS:ESP 0068:cbc13ca8