BUG: unable to handle kernel NULL pointer dereference at 00000000000000f0
IP: [<ffffffff8103db09>] __ticket_spin_lock+0x9/0x30
PGD 16c0c4067 PUD 16c0c3067 PMD 0 
Oops: 0002 [#1] SMP 
CPU 1 
Modules linked in: nls_iso8859_1 nls_cp437 vfat fat bnep rfcomm bluetooth parport_pc ppdev snd_hda_codec_hdmi snd_hda_codec_realtek arc4 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm i2400m_usb iwlwifi snd_seq_midi joydev uvcvideo i915 i2400m snd_rawmidi snd_seq_midi_event videodev snd_seq snd_timer v4l2_compat_ioctl32 wimax snd_seq_device drm_kms_helper drm mac80211 snd psmouse soundcore i2c_algo_bit snd_page_alloc dell_wmi serio_raw cfg80211 sparse_keymap dell_laptop dcdbas mac_hid video wmi intel_ips mei(C) lp parport uas usb_storage atl1c

Pid: 1714, comm: gvfsd-trash Tainted: G         C   3.2.0-20-generic #33-Ubuntu Dell Inc. Inspiron N7010/08VFX1
RIP: 0010:[<ffffffff8103db09>]  [<ffffffff8103db09>] __ticket_spin_lock+0x9/0x30
RSP: 0018:ffff88016c0c7e18  EFLAGS: 00010206
RAX: 0000000000010000 RBX: 00000000000000f0 RCX: ffff8801bbfb2000
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000000000f0
RBP: ffff88016c0c7e18 R08: e000000000000000 R09: 5038000000000000
R10: fe6dda596164ea07 R11: 0000000000000001 R12: ffff880174260310
R13: ffff880174260408 R14: ffff88016c285564 R15: ffff880174260310
FS:  00007fb9762a27c0(0000) GS:ffff8801bbc80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000f0 CR3: 000000016cfc4000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process gvfsd-trash (pid: 1714, threadinfo ffff88016c0c6000, task ffff88018c9fdbc0)
Stack:
 ffff88016c0c7e28 ffffffff8165beee ffff88016c0c7e48 ffffffffa03ff462
 ffff880174260310 ffff880174260310 ffff88016c0c7e68 ffffffffa03ffbcb
 ffff88016c0c7e68 ffffffffa04036c0 ffff88016c0c7e98 ffffffff81192478
Call Trace:
 [<ffffffff8165beee>] _raw_spin_lock+0xe/0x20
 [<ffffffffa03ff462>] fat_detach+0x32/0x80 [fat]
 [<ffffffffa03ffbcb>] fat_evict_inode+0x5b/0x70 [fat]
 [<ffffffff81192478>] evict+0xb8/0x1c0
 [<ffffffff81192668>] iput_final+0xe8/0x210
 [<ffffffff811927ce>] iput+0x3e/0x50
 [<ffffffff811b7980>] fsnotify_destroy_mark+0x170/0x180
 [<ffffffff811b997a>] sys_inotify_rm_watch+0x7a/0xd0
 [<ffffffff81664502>] system_call_fastpath+0x16/0x1b
Code: 00 00 48 c7 c1 11 d9 03 81 48 c7 c2 0e d9 03 81 e9 dd fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 b8 00 00 01 00 48 89 e5 <f0> 0f c1 07 89 c2 c1 ea 10 66 39 c2 74 13 66 0f 1f 84 00 00 00 
RIP  [<ffffffff8103db09>] __ticket_spin_lock+0x9/0x30
 RSP <ffff88016c0c7e18>
CR2: 00000000000000f0
---[ end trace c25864412dc39b43 ]---