BUG: unable to handle kernel paging request at ffff8802166616e0
IP: [<ffff8802166616e0>] 0xffff8802166616df
PGD 1c06063 PUD bfdf9067 PMD 80000002166001e3 
Oops: 0011 [#2] SMP 
CPU 0 
Modules linked in: iscsi_trgt(O) bnep rfcomm bluetooth ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext2 vesafb snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq fglrx(P) snd_timer snd_seq_device snd psmouse soundcore dell_wmi ppdev mac_hid serio_raw sparse_keymap mei(C) dcdbas snd_page_alloc parport_pc wmi lp parport usbhid hid e1000e

Pid: 1125, comm: istd1 Tainted: P      D  C O 3.2.0-19-generic #31-Ubuntu Dell Inc. OptiPlex 760                 /0M863N
RIP: 0010:[<ffff8802166616e0>]  [<ffff8802166616e0>] 0xffff8802166616df
RSP: 0018:ffff88021de61b48  EFLAGS: 00010097
RAX: ffff8802298f9e80 RBX: ffff880216661ca4 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8802298f9e80
RBP: ffff88021de61b90 R08: ffff880237c13780 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000013780
R13: ffff88022950d210 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff880237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffff8802166616e0 CR3: 0000000001c05000 CR4: 00000000000406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process istd1 (pid: 1125, threadinfo ffff88021de60000, task ffff880229542dc0)
Stack:
 ffffffff8104c2f8 0000000000000000 0000000300000001 ffff88021de61b70
 ffff88022950d208 0000000000000282 0000000000000003 0000000000000001
 0000000000000000 ffff88021de61bd0 ffffffff8104dea8 0000000000000000
Call Trace:
 [<ffffffff8104c2f8>] ? __wake_up_common+0x58/0x90
 [<ffffffff8104dea8>] __wake_up+0x48/0x70
 [<ffffffffa057ff4d>] wthread_queue+0x7d/0x140 [iscsi_trgt]
 [<ffffffffa057b113>] iscsi_device_queue_cmnd+0x13/0x20 [iscsi_trgt]
 [<ffffffffa057c60a>] iscsi_cmnd_exec+0x53a/0x820 [iscsi_trgt]
 [<ffffffffa057ae87>] ? cmnd_insert_hash_ttt+0xd7/0x100 [iscsi_trgt]
 [<ffffffffa057cb44>] iscsi_session_push_cmnd+0x254/0x310 [iscsi_trgt]
 [<ffffffffa057d49e>] ? cmnd_rx_start+0x24e/0xab0 [iscsi_trgt]
 [<ffffffffa057de48>] cmnd_rx_end+0x148/0x320 [iscsi_trgt]
 [<ffffffffa057e8cd>] istd+0x3fd/0x1470 [iscsi_trgt]
 [<ffffffff815a74e0>] ? inet_sendmsg+0xb0/0xb0
 [<ffffffffa057e4d0>] ? nthread_wakeup+0x50/0x50 [iscsi_trgt]
 [<ffffffff8108a38c>] kthread+0x8c/0xa0
 [<ffffffff81665c74>] kernel_thread_helper+0x4/0x10
 [<ffffffff8108a300>] ? flush_kthread_worker+0xa0/0xa0
 [<ffffffff81665c70>] ? gs_change+0x13/0x13
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 <a0> 44 66 16 02 88 ff ff 00 80 8f 29 02 88 ff ff 00 00 00 00 0c 
RIP  [<ffff8802166616e0>] 0xffff8802166616df
 RSP <ffff88021de61b48>
CR2: ffff8802166616e0
---[ end trace 5511c5cadae507ba ]---