[pon jan  5 19:10:49 2015] INFO: task pool:14804 blocked for more than 120 seconds.
[pon jan  5 19:10:49 2015]       Tainted: G           OE 3.16.0-28-generic #38-Ubuntu
[pon jan  5 19:10:49 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[pon jan  5 19:10:49 2015] pool            D ffff88013ed93840     0 14804   9661 0x00000000
[pon jan  5 19:10:49 2015]  ffff88000fddbc60 0000000000000082 ffff880043715180 0000000000013840
[pon jan  5 19:10:49 2015]  ffff88000fddbfd8 0000000000013840 ffff880043715180 ffff88009f5cd8a8
[pon jan  5 19:10:49 2015]  ffff88009f5cd8ac ffff880043715180 00000000ffffffff ffff88009f5cd8b0
[pon jan  5 19:10:49 2015] Call Trace:
[pon jan  5 19:10:49 2015]  [<ffffffff817855c9>] schedule_preempt_disabled+0x29/0x70
[pon jan  5 19:10:49 2015]  [<ffffffff81787b65>] __mutex_lock_slowpath+0xd5/0x1f0
[pon jan  5 19:10:49 2015]  [<ffffffff811ebb93>] ? lookup_fast+0x1f3/0x2e0
[pon jan  5 19:10:49 2015]  [<ffffffff81787c9f>] mutex_lock+0x1f/0x30
[pon jan  5 19:10:49 2015]  [<ffffffff811edd6f>] do_last+0x38f/0x1290
[pon jan  5 19:10:49 2015]  [<ffffffff8133da4b>] ? apparmor_file_alloc_security+0x5b/0x180
[pon jan  5 19:10:49 2015]  [<ffffffff812fd1a6>] ? security_file_alloc+0x16/0x20
[pon jan  5 19:10:49 2015]  [<ffffffff811f149b>] path_openat+0xbb/0x6a0
[pon jan  5 19:10:49 2015]  [<ffffffff811f2b2a>] do_filp_open+0x3a/0xa0
[pon jan  5 19:10:49 2015]  [<ffffffff811ff927>] ? __alloc_fd+0xa7/0x130
[pon jan  5 19:10:49 2015]  [<ffffffff811e019a>] do_sys_open+0x12a/0x280
[pon jan  5 19:10:49 2015]  [<ffffffff810ec9e6>] ? SyS_futex+0x76/0x170
[pon jan  5 19:10:49 2015]  [<ffffffff811e030e>] SyS_open+0x1e/0x20
[pon jan  5 19:10:49 2015]  [<ffffffff81789eed>] system_call_fastpath+0x1a/0x1f


[pon jan  5 19:44:52 2015] INFO: task cron:1370 blocked for more than 120 seconds.
[pon jan  5 19:44:52 2015]       Tainted: G           OE 3.16.0-28-generic #38-Ubuntu
[pon jan  5 19:44:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[pon jan  5 19:44:52 2015] cron            D ffff88013ed13840     0  1370      1 0x00000000
[pon jan  5 19:44:52 2015]  ffff8800baa43a98 0000000000000082 ffff8800358732f0 0000000000013840
[pon jan  5 19:44:52 2015]  ffff8800baa43fd8 0000000000013840 ffff8800358732f0 ffff88013ed14140
[pon jan  5 19:44:52 2015]  ffff88013efc9958 0000000000000002 ffffffff81213740 ffff8800baa43b10
[pon jan  5 19:44:52 2015] Call Trace:
[pon jan  5 19:44:52 2015]  [<ffffffff81213740>] ? generic_block_bmap+0x50/0x50
[pon jan  5 19:44:52 2015]  [<ffffffff817853af>] io_schedule+0xaf/0x150
[pon jan  5 19:44:52 2015]  [<ffffffff8121374e>] sleep_on_buffer+0xe/0x20
[pon jan  5 19:44:52 2015]  [<ffffffff81785874>] __wait_on_bit+0x64/0x90
[pon jan  5 19:44:52 2015]  [<ffffffff81368c48>] ? generic_make_request+0xd8/0x130
[pon jan  5 19:44:52 2015]  [<ffffffff81213740>] ? generic_block_bmap+0x50/0x50
[pon jan  5 19:44:52 2015]  [<ffffffff81785917>] out_of_line_wait_on_bit+0x77/0x90
[pon jan  5 19:44:52 2015]  [<ffffffff810b9750>] ? autoremove_wake_function+0x40/0x40
[pon jan  5 19:44:52 2015]  [<ffffffff812149ad>] ? _submit_bh+0x15d/0x230
[pon jan  5 19:44:52 2015]  [<ffffffff81214aca>] __wait_on_buffer+0x2a/0x30
[pon jan  5 19:44:52 2015]  [<ffffffff81263e53>] __ext4_get_inode_loc+0x1d3/0x3f0
[pon jan  5 19:44:52 2015]  [<ffffffff81265d96>] ext4_iget+0x96/0xac0
[pon jan  5 19:44:52 2015]  [<ffffffff812667f5>] ext4_iget_normal+0x35/0x40
[pon jan  5 19:44:52 2015]  [<ffffffff8127015e>] ext4_lookup+0xde/0x150
[pon jan  5 19:44:52 2015]  [<ffffffff811ea7cd>] lookup_real+0x1d/0x70
[pon jan  5 19:44:52 2015]  [<ffffffff811eb233>] __lookup_hash+0x33/0x40
[pon jan  5 19:44:52 2015]  [<ffffffff811f06d3>] path_lookupat+0x903/0xd70
[pon jan  5 19:44:52 2015]  [<ffffffff8101c8ae>] ? native_sched_clock+0x2e/0xa0
[pon jan  5 19:44:52 2015]  [<ffffffff811c2a75>] ? kmem_cache_alloc+0x35/0x1f0
[pon jan  5 19:44:52 2015]  [<ffffffff811f1b1b>] ? getname_flags+0x4b/0x180
[pon jan  5 19:44:52 2015]  [<ffffffff811f0b6a>] filename_lookup+0x2a/0xd0
[pon jan  5 19:44:52 2015]  [<ffffffff811f2a14>] user_path_at_empty+0x54/0xb0
[pon jan  5 19:44:52 2015]  [<ffffffff810983d8>] ? hrtimer_try_to_cancel+0x48/0xe0
[pon jan  5 19:44:52 2015]  [<ffffffff811f2a81>] user_path_at+0x11/0x20
[pon jan  5 19:44:52 2015]  [<ffffffff811e5d02>] vfs_fstatat+0x52/0xa0
[pon jan  5 19:44:52 2015]  [<ffffffff8109903f>] ? hrtimer_nanosleep+0xcf/0x1e0
[pon jan  5 19:44:52 2015]  [<ffffffff811e619f>] SYSC_newstat+0x1f/0x40
[pon jan  5 19:44:52 2015]  [<ffffffff81784469>] ? do_nanosleep+0x89/0x150
[pon jan  5 19:44:52 2015]  [<ffffffff81014113>] ? do_device_not_available+0x33/0x60
[pon jan  5 19:44:52 2015]  [<ffffffff8178b96e>] ? device_not_available+0x1e/0x30
[pon jan  5 19:44:52 2015]  [<ffffffff811e63fe>] SyS_newstat+0xe/0x10
[pon jan  5 19:44:52 2015]  [<ffffffff81789eed>] system_call_fastpath+0x1a/0x1f