[67189.617307] Pid: 14930, comm: sync Tainted: G D 2.6.32-24-generic #42-Ubuntu 2516RQ3
[67189.617310] RIP: 0010:[<ffffffff8105373a>] [<ffffffff8105373a>] task_rq_lock+0x4a/0xa0
[67189.617322] RSP: 0018:ffff88011fdafe28 EFLAGS: 00010086
[67189.617325] RAX: 322e3930312e3931 RBX: 0000000000015bc0 RCX: 0000000000000000
[67189.617328] RDX: 0000000000000286 RSI: ffff88011fdafe70 RDI: ffff880124450000
[67189.617330] RBP: ffff88011fdafe48 R08: ffff880028292400 R09: 0000000000000060
[67189.617333] R10: 00007fff9fb41a70 R11: 0000000000000202 R12: ffff880124450000
[67189.617336] R13: ffff88011fdafe70 R14: 0000000000015bc0 R15: ffff88011fdafe70
[67189.617340] FS: 00007f7e4f93f700(0000) GS:ffff880028280000(0000) knlGS:0000000000000000
[67189.617343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[67189.617346] CR2: 00007f7e4f49a2f0 CR3: 000000012209d000 CR4: 00000000000026e0
[67189.617349] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[67189.617352] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[67189.617356] Process sync (pid: 14930, threadinfo ffff88011fdae000, task ffff8800a33c8000)
[67189.617358] Stack:
[67189.617360] ffff880124450000 ffff8801025b5958 ffff88012ef0fc00 0000000000000000
[67189.617365] <0> ffff88011fdafea8 ffffffff8105ae01 000000011fdafea8 00007f7e0000000f
[67189.617370] <0> ffff8801217a1370 0000000000000286 ffff8801215693d0 ffff8801025b57f8
[67189.617376] Call Trace:
[67189.617382] [<ffffffff8105ae01>] try_to_wake_up+0x51/0x380
[67189.617387] [<ffffffff8105b185>] wake_up_process+0x15/0x20
[67189.617393] [<ffffffff81166474>] bdi_queue_work+0xa4/0xe0
[67189.617397] [<ffffffff811674d4>] bdi_alloc_queue_work+0x84/0x100
[67189.617403] [<ffffffff81546f48>] ? do_page_fault+0x158/0x3b0
[67189.617407] [<ffffffff811675d9>] wakeup_flusher_threads+0x89/0xa0
[67189.617413] [<ffffffff81544865>] ? page_fault+0x25/0x30
[67189.617418] [<ffffffff8116b4c0>] sys_sync+0x10/0x40
[67189.617425] [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b
[67189.617427] Code: 00 48 c7 c3 c0 5b 01 00 49 89 fc 49 89 f5 9c 58 0f 1f 44 00 00 48 89 c2 fa 66 0f 1f 44 00 00 49 89 55 00 49 8b 44 24 08 49 89 de <8b> 40 18 4c 03 34 c5 c0 ef 82 81 4c 89 f7 e8 43 0c 4f 00 49 8b
[67189.617465] RIP [<ffffffff8105373a>] task_rq_lock+0x4a/0xa0
[67189.617470] RSP <ffff88011fdafe28>
[67189.617473] ---[ end trace d8d2b8b725258fe7 ]---
