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kernel BUG at /build/buildd/linux-3.0.0/fs/ecryptfs/crypto.c:348!
invalid opcode: 0000 [#1] SMP 
CPU 2 
Modules linked in: joydev hid_cherry usbhid hid usb_storage uas dm_crypt vesafb snd_hda_codec_hdmi snd_hda_codec_idt bnep rfcomm bluetooth arc4 nvidia(P) dell_wmi sparse_keymap snd_hda_intel snd_hda_codec snd_hwdep cdc_ncm dell_laptop usbnet dcdbas snd_pcm snd_seq_midi snd_rawmidi cdc_wdm cdc_acm uvcvideo videodev v4l2_compat_ioctl32 snd_seq_midi_event snd_seq snd_seq_device psmouse serio_raw snd_timer iwlagn mac80211 snd cfg80211 mei(C) soundcore snd_page_alloc wmi binfmt_misc ppdev parport_pc video lp parport ahci sdhci_pci libahci sdhci e1000e

Pid: 4667, comm: dconf-service Tainted: P         C  3.0.0-11-generic #18-Ubuntu Dell Inc. Latitude E6420/032T9K
RIP: 0010:[<ffffffff81255872>]  [<ffffffff81255872>] encrypt_scatterlist+0x112/0x140
RSP: 0018:ffff880202bc3b48  EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88020d7f9e88 RCX: 0000000000001000
RDX: ffff880202bc3bc0 RSI: ffff880202bc3be0 RDI: ffff88020d7f9e88
RBP: ffff880202bc3b98 R08: ffff880202bc3c00 R09: ffff880202bc3be0
R10: 0000000000000000 R11: 0000000090b4df2a R12: ffff880202bc3bc0
R13: 0000000000000000 R14: 0000000000001000 R15: ffff880202bc3be0
FS:  00007f40444127c0(0000) GS:ffff88022dc40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000002200618 CR3: 000000021ce50000 CR4: 00000000000406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process dconf-service (pid: 4667, threadinfo ffff880202bc2000, task ffff880213259720)
Stack:
 0000000000000000 0000000000000000 ffff880202bc3c00 0000000000000200
 0000000000000001 ffff88020d7f9e88 ffffea0007181ea8 0000000000000000
 0000000000000000 ffffea00072e68c0 ffff880202bc3c48 ffffffff812561d4
Call Trace:
 [<ffffffff812561d4>] ecryptfs_encrypt_extent+0x114/0x2b0
 [<ffffffff8125691d>] ecryptfs_encrypt_page+0xdd/0x1a0
 [<ffffffff81254492>] ecryptfs_writepage+0x32/0x90
 [<ffffffff811136a7>] __writepage+0x17/0x40
 [<ffffffff81113bfd>] write_cache_pages+0x1ed/0x470
 [<ffffffff81113690>] ? set_page_dirty_lock+0x60/0x60
 [<ffffffff8110bd06>] ? generic_file_aio_write+0x96/0xe0
 [<ffffffff81113eca>] generic_writepages+0x4a/0x70
 [<ffffffff81114a95>] do_writepages+0x35/0x40
 [<ffffffff8110b61b>] __filemap_fdatawrite_range+0x5b/0x60
 [<ffffffff8110c01f>] filemap_fdatawrite+0x1f/0x30
 [<ffffffff8110c065>] filemap_write_and_wait+0x35/0x60
 [<ffffffff81251244>] ecryptfs_flush+0x24/0x30
 [<ffffffff811657ef>] filp_close+0x3f/0x90
 [<ffffffff811658f4>] sys_close+0xb4/0x120
 [<ffffffff815f21c2>] system_call_fastpath+0x16/0x1b
Code: 00 85 c0 74 93 89 c2 48 c7 c6 40 9b 62 81 31 c0 48 c7 c7 90 ca 7f 81 e8 ed da ff ff 4c 89 ef e8 35 30 39 00 b8 ea ff ff ff eb a3 <0f> 0b 48 8b 53 20 48 c7 c6 40 9b 62 81 48 c7 c7 2c 5e 80 81 31 
RIP  [<ffffffff81255872>] encrypt_scatterlist+0x112/0x140
 RSP <ffff880202bc3b48>
---[ end trace 2c49eb5bda961d00 ]---