BUG: unable to handle kernel NULL pointer dereference at 0000009c
IP: [<c10363a8>] __ticket_spin_lock+0x8/0x30
*pdpt = 0000000013a3d001 *pde = 0000000000000000 
Oops: 0002 [#1] SMP 
Modules linked in: nls_iso8859_1 nls_cp437 vfat fat snd_seq_dummy parport_pc ppdev joydev snd_hda_codec_realtek acer_wmi mxm_wmi sparse_keymap rfcomm bnep bluetooth snd_hda_intel snd_hda_codec snd_hwdep snd_pcm binfmt_misc snd_seq_midi snd_rawmidi arc4 snd_seq_midi_event snd_seq rt2800pci rt2800lib crc_ccitt rt2x00pci snd_timer rt2x00lib snd_seq_device mac80211 psmouse serio_raw snd uvcvideo soundcore i915 videodev cfg80211 snd_page_alloc eeprom_93cx6 drm_kms_helper wmi drm mac_hid i2c_algo_bit video lp parport ext2 ums_realtek sky2 uas usb_storage

Pid: 5598, comm: gvfsd-trash Not tainted 3.2.0-20-generic-pae #32-Ubuntu Acer            Aspire 5335                    /CathedralPeak                  
EIP: 0060:[<c10363a8>] EFLAGS: 00210206 CPU: 0
EIP is at __ticket_spin_lock+0x8/0x30
EAX: 0000009c EBX: c8818378 ECX: 0000003e EDX: 00000100
ESI: 0000009c EDI: c8818410 EBP: ee0ebf1c ESP: ee0ebf1c
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process gvfsd-trash (pid: 5598, ti=ee0ea000 task=f14cd860 task.ti=ee0ea000)
Stack:
 ee0ebf24 c15a752d ee0ebf34 f93fa9f9 c8818378 f93fe3c0 ee0ebf40 f93fb066
 c8818378 ee0ebf54 c115b7cf c8818378 c88183c4 f222f000 ee0ebf68 c115b957
 c8818378 f1c27604 f07dc780 ee0ebf74 c115ba6e f1c275f0 ee0ebf94 c117cd70
Call Trace:
 [<c15a752d>] _raw_spin_lock+0xd/0x10
 [<f93fa9f9>] fat_detach+0x29/0x70 [fat]
 [<f93fb066>] fat_evict_inode+0x56/0x60 [fat]
 [<c115b7cf>] evict+0x8f/0x170
 [<c115b957>] iput_final+0xa7/0x190
 [<c115ba6e>] iput+0x2e/0x40
 [<c117cd70>] fsnotify_destroy_mark+0x140/0x150
 [<c117e89a>] sys_inotify_rm_watch+0x5a/0x90
 [<c15ae91f>] sysenter_do_call+0x12/0x28
 [<c15a0000>] ? scsi_unregister_device_handler.part.10+0x84/0x8f
Code: ff ff 90 b8 5d 62 03 c1 b9 5a 62 03 c1 e9 59 ff ff ff 90 b8 63 62 03 c1 b9 60 62 03 c1 e9 49 ff ff ff 90 55 ba 00 01 00 00 89 e5 <3e> 66 0f c1 10 0f b6 ce 38 d1 74 0d 8d 74 26 00 f3 90 0f b6 10 
EIP: [<c10363a8>] __ticket_spin_lock+0x8/0x30 SS:ESP 0068:ee0ebf1c
CR2: 000000000000009c
sdc: detected capacity change from 31910789120 to 0
---[ end trace cd635fa6ffe03926 ]---