BUG: unable to handle kernel NULL pointer dereference at 00000000000000f0
IP: [<ffffffff8103db09>] __ticket_spin_lock+0x9/0x30
PGD 163445067 PUD 162d8c067 PMD 0 
Oops: 0002 [#1] SMP 
CPU 1 
Modules linked in: ufs qnx4 hfs minix ntfs msdos hfsplus xfs reiserfs jfs ext2 parport_pc ppdev lp parport dm_crypt snd_hda_codec_hdmi snd_hda_codec_cirrus snd_hda_intel snd_hda_codec snd_hwdep arc4 snd_pcm b43 snd_seq_midi mac80211 snd_rawmidi snd_seq_midi_event snd_seq snd_timer cfg80211 snd_seq_device ssb joydev uvcvideo btusb bnep applesmc bcma videodev snd mei(C) mac_hid apple_bl v4l2_compat_ioctl32 apple_gmux bcm5974 rfcomm bluetooth soundcore input_polldev snd_page_alloc dm_multipath squashfs overlayfs nls_utf8 isofs nls_iso8859_1 nls_cp437 vfat fat dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs zlib_deflate libcrc32c hid_apple tg3 firewire_ohci sdhci_pci sdhci firewire_core i915 crc_itu_t drm_kms_helper usbhid hid drm i2c_algo_bit video

Pid: 5389, comm: gvfsd-trash Tainted: G         C   3.2.0-20-generic #33-Ubuntu Apple Inc. MacBookPro8,1/Mac-94245B3640C91C81
RIP: 0010:[<ffffffff8103db09>]  [<ffffffff8103db09>] __ticket_spin_lock+0x9/0x30
RSP: 0018:ffff880162dade18  EFLAGS: 00010206
RAX: 0000000000010000 RBX: 00000000000000f0 RCX: ffff88016fdb2000
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000000000f0
RBP: ffff880162dade18 R08: e000000000000000 R09: 5038000000000000
R10: feba9cd1b0c20a07 R11: 0000000000000001 R12: ffff880127637790
R13: ffff880127637888 R14: ffff880165594a64 R15: ffff880127637790
FS:  00007fce182a27c0(0000) GS:ffff88016fa40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000f0 CR3: 00000001667fa000 CR4: 00000000000406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process gvfsd-trash (pid: 5389, threadinfo ffff880162dac000, task ffff880165deade0)
Stack:
 ffff880162dade28 ffffffff8165beee ffff880162dade48 ffffffffa0241462
 ffff880127637790 ffff880127637790 ffff880162dade68 ffffffffa0241bcb
 ffff880162dade68 ffffffffa02456c0 ffff880162dade98 ffffffff81192478
Call Trace:
 [<ffffffff8165beee>] _raw_spin_lock+0xe/0x20
 [<ffffffffa0241462>] fat_detach+0x32/0x80 [fat]
 [<ffffffffa0241bcb>] 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 <ffff880162dade18>
CR2: 00000000000000f0
---[ end trace 51e39cdc4f1b3dc4 ]---