[   32.294135] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[   32.364104] vboxdrv: module verification failed: signature and/or  required key missing - tainting kernel
[   32.367817] vboxdrv: Found 4 processor cores.
[   32.367988] vboxdrv: fAsync=0 offMin=0x150 offMax=0x1036
[   32.368068] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.
[   32.368070] vboxdrv: Successfully loaded version 4.3.36_Ubuntu (interface 0x001a000b).
[   32.385644] vboxpci: IOMMU not found (not registered)
[   32.652446] init: plymouth-upstart-bridge main process ended, respawning
[   32.657926] init: plymouth-upstart-bridge main process (1616) terminated with status 1
[   32.657941] init: plymouth-upstart-bridge main process ended, respawning
[   33.095650] init: anacron main process (1345) killed by TERM signal
[   36.604337] e1000e 0000:00:19.0: irq 52 for MSI/MSI-X
[   43.455074] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
[   43.455112] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   61.237723] audit_printk_skb: 105 callbacks suppressed
[   61.237726] type=1400 audit(1462609274.061:47): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=2490 comm="apparmor_parser"
[   61.237732] type=1400 audit(1462609274.061:48): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=2490 comm="apparmor_parser"
[   61.238101] type=1400 audit(1462609274.061:49): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=2490 comm="apparmor_parser"
[  241.061621] INFO: task python:639 blocked for more than 120 seconds.
[  241.061634]       Tainted: G           OX 3.13.0-85-generic #129-Ubuntu
[  241.061637] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  241.061642] python          D ffff88043dc93180     0   639      1 0x00000000
[  241.061652]  ffff880420569e10 0000000000000086 ffff8804250fe000 ffff880420569fd8
[  241.061661]  0000000000013180 0000000000013180 ffff8804250fe000 ffffffffa0325040
[  241.061668]  ffffffffa0325044 ffff8804250fe000 00000000ffffffff ffffffffa0325048
[  241.061676] Call Trace:
[  241.061723]  [<ffffffff81730089>] schedule_preempt_disabled+0x29/0x70
[  241.061732]  [<ffffffff81731ef5>] __mutex_lock_slowpath+0x135/0x1b0
[  241.061746]  [<ffffffff81731f8f>] mutex_lock+0x1f/0x2f
[  241.061759]  [<ffffffffa0322cc3>] pp_ioctl+0x23/0x50 [ppdev]
[  241.061768]  [<ffffffff811d5050>] do_vfs_ioctl+0x2e0/0x4c0
[  241.061774]  [<ffffffff811d52b1>] SyS_ioctl+0x81/0xa0
[  241.061783]  [<ffffffff8173c39d>] system_call_fastpath+0x1a/0x1f
[  361.023467] INFO: task python:639 blocked for more than 120 seconds.
[  361.023480]       Tainted: G           OX 3.13.0-85-generic #129-Ubuntu
[  361.023483] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  361.023488] python          D ffff88043dc93180     0   639      1 0x00000000
[  361.023498]  ffff880420569e10 0000000000000086 ffff8804250fe000 ffff880420569fd8
[  361.023507]  0000000000013180 0000000000013180 ffff8804250fe000 ffffffffa0325040
[  361.023514]  ffffffffa0325044 ffff8804250fe000 00000000ffffffff ffffffffa0325048
[  361.023522] Call Trace:
[  361.023569]  [<ffffffff81730089>] schedule_preempt_disabled+0x29/0x70
[  361.023579]  [<ffffffff81731ef5>] __mutex_lock_slowpath+0x135/0x1b0
[  361.023594]  [<ffffffff81731f8f>] mutex_lock+0x1f/0x2f
[  361.023607]  [<ffffffffa0322cc3>] pp_ioctl+0x23/0x50 [ppdev]
[  361.023616]  [<ffffffff811d5050>] do_vfs_ioctl+0x2e0/0x4c0
[  361.023622]  [<ffffffff811d52b1>] SyS_ioctl+0x81/0xa0
[  361.023630]  [<ffffffff8173c39d>] system_call_fastpath+0x1a/0x1f
[  480.985307] INFO: task python:639 blocked for more than 120 seconds.
[  480.985317]       Tainted: G           OX 3.13.0-85-generic #129-Ubuntu
[  480.985320] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  480.985323] python          D ffff88043dc93180     0   639      1 0x00000000
[  480.985331]  ffff880420569e10 0000000000000086 ffff8804250fe000 ffff880420569fd8
[  480.985338]  0000000000013180 0000000000013180 ffff8804250fe000 ffffffffa0325040
[  480.985344]  ffffffffa0325044 ffff8804250fe000 00000000ffffffff ffffffffa0325048
[  480.985350] Call Trace:
[  480.985386]  [<ffffffff81730089>] schedule_preempt_disabled+0x29/0x70
[  480.985393]  [<ffffffff81731ef5>] __mutex_lock_slowpath+0x135/0x1b0
[  480.985404]  [<ffffffff81731f8f>] mutex_lock+0x1f/0x2f
[  480.985415]  [<ffffffffa0322cc3>] pp_ioctl+0x23/0x50 [ppdev]
[  480.985422]  [<ffffffff811d5050>] do_vfs_ioctl+0x2e0/0x4c0
[  480.985427]  [<ffffffff811d52b1>] SyS_ioctl+0x81/0xa0
[  480.985433]  [<ffffffff8173c39d>] system_call_fastpath+0x1a/0x1f
[  600.947020] INFO: task python:639 blocked for more than 120 seconds.
[  600.947025]       Tainted: G           OX 3.13.0-85-generic #129-Ubuntu
[  600.947027] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  600.947029] python          D ffff88043dc93180     0   639      1 0x00000000
[  600.947033]  ffff880420569e10 0000000000000086 ffff8804250fe000 ffff880420569fd8
[  600.947037]  0000000000013180 0000000000013180 ffff8804250fe000 ffffffffa0325040
[  600.947040]  ffffffffa0325044 ffff8804250fe000 00000000ffffffff ffffffffa0325048
[  600.947044] Call Trace:
[  600.947069]  [<ffffffff81730089>] schedule_preempt_disabled+0x29/0x70
[  600.947073]  [<ffffffff81731ef5>] __mutex_lock_slowpath+0x135/0x1b0
[  600.947079]  [<ffffffff81731f8f>] mutex_lock+0x1f/0x2f
[  600.947086]  [<ffffffffa0322cc3>] pp_ioctl+0x23/0x50 [ppdev]
[  600.947090]  [<ffffffff811d5050>] do_vfs_ioctl+0x2e0/0x4c0
[  600.947093]  [<ffffffff811d52b1>] SyS_ioctl+0x81/0xa0
[  600.947097]  [<ffffffff8173c39d>] system_call_fastpath+0x1a/0x1f
[  720.908969] INFO: task python:639 blocked for more than 120 seconds.
[  720.908982]       Tainted: G           OX 3.13.0-85-generic #129-Ubuntu
[  720.908985] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  720.908990] python          D ffff88043dc93180     0   639      1 0x00000000
[  720.909000]  ffff880420569e10 0000000000000086 ffff8804250fe000 ffff880420569fd8
[  720.909009]  0000000000013180 0000000000013180 ffff8804250fe000 ffffffffa0325040
[  720.909016]  ffffffffa0325044 ffff8804250fe000 00000000ffffffff ffffffffa0325048
[  720.909024] Call Trace:
[  720.909072]  [<ffffffff81730089>] schedule_preempt_disabled+0x29/0x70
[  720.909081]  [<ffffffff81731ef5>] __mutex_lock_slowpath+0x135/0x1b0
[  720.909096]  [<ffffffff81731f8f>] mutex_lock+0x1f/0x2f
[  720.909111]  [<ffffffffa0322cc3>] pp_ioctl+0x23/0x50 [ppdev]
[  720.909120]  [<ffffffff811d5050>] do_vfs_ioctl+0x2e0/0x4c0
[  720.909127]  [<ffffffff811d52b1>] SyS_ioctl+0x81/0xa0
[  720.909136]  [<ffffffff8173c39d>] system_call_fastpath+0x1a/0x1f
[  840.870764] INFO: task python:639 blocked for more than 120 seconds.
[  840.870776]       Tainted: G           OX 3.13.0-85-generic #129-Ubuntu
[  840.870779] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  840.870783] python          D ffff88043dc93180     0   639      1 0x00000000
[  840.870794]  ffff880420569e10 0000000000000086 ffff8804250fe000 ffff880420569fd8
[  840.870803]  0000000000013180 0000000000013180 ffff8804250fe000 ffffffffa0325040
[  840.870810]  ffffffffa0325044 ffff8804250fe000 00000000ffffffff ffffffffa0325048
[  840.870818] Call Trace:
[  840.870870]  [<ffffffff81730089>] schedule_preempt_disabled+0x29/0x70
[  840.870881]  [<ffffffff81731ef5>] __mutex_lock_slowpath+0x135/0x1b0
[  840.870900]  [<ffffffff81731f8f>] mutex_lock+0x1f/0x2f
[  840.870919]  [<ffffffffa0322cc3>] pp_ioctl+0x23/0x50 [ppdev]
[  840.870931]  [<ffffffff811d5050>] do_vfs_ioctl+0x2e0/0x4c0
[  840.870941]  [<ffffffff811d52b1>] SyS_ioctl+0x81/0xa0
[  840.870953]  [<ffffffff8173c39d>] system_call_fastpath+0x1a/0x1f
[  960.832619] INFO: task python:639 blocked for more than 120 seconds.
[  960.832646]       Tainted: G           OX 3.13.0-85-generic #129-Ubuntu
[  960.832650] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  960.832656] python          D ffff88043dc93180     0   639      1 0x00000000
[  960.832670]  ffff880420569e10 0000000000000086 ffff8804250fe000 ffff880420569fd8
[  960.832683]  0000000000013180 0000000000013180 ffff8804250fe000 ffffffffa0325040
[  960.832693]  ffffffffa0325044 ffff8804250fe000 00000000ffffffff ffffffffa0325048
[  960.832705] Call Trace:
[  960.832761]  [<ffffffff81730089>] schedule_preempt_disabled+0x29/0x70
[  960.832773]  [<ffffffff81731ef5>] __mutex_lock_slowpath+0x135/0x1b0
[  960.832795]  [<ffffffff81731f8f>] mutex_lock+0x1f/0x2f
[  960.832815]  [<ffffffffa0322cc3>] pp_ioctl+0x23/0x50 [ppdev]
[  960.832827]  [<ffffffff811d5050>] do_vfs_ioctl+0x2e0/0x4c0
[  960.832837]  [<ffffffff811d52b1>] SyS_ioctl+0x81/0xa0
[  960.832849]  [<ffffffff8173c39d>] system_call_fastpath+0x1a/0x1f
[ 1080.794547] INFO: task python:639 blocked for more than 120 seconds.
[ 1080.794559]       Tainted: G           OX 3.13.0-85-generic #129-Ubuntu
[ 1080.794562] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1080.794567] python          D ffff88043dc93180     0   639      1 0x00000000
[ 1080.794578]  ffff880420569e10 0000000000000086 ffff8804250fe000 ffff880420569fd8
[ 1080.794587]  0000000000013180 0000000000013180 ffff8804250fe000 ffffffffa0325040
[ 1080.794594]  ffffffffa0325044 ffff8804250fe000 00000000ffffffff ffffffffa0325048
[ 1080.794602] Call Trace:
[ 1080.794649]  [<ffffffff81730089>] schedule_preempt_disabled+0x29/0x70
[ 1080.794657]  [<ffffffff81731ef5>] __mutex_lock_slowpath+0x135/0x1b0
[ 1080.794671]  [<ffffffff81731f8f>] mutex_lock+0x1f/0x2f
[ 1080.794685]  [<ffffffffa0322cc3>] pp_ioctl+0x23/0x50 [ppdev]
[ 1080.794694]  [<ffffffff811d5050>] do_vfs_ioctl+0x2e0/0x4c0
[ 1080.794700]  [<ffffffff811d52b1>] SyS_ioctl+0x81/0xa0
[ 1080.794708]  [<ffffffff8173c39d>] system_call_fastpath+0x1a/0x1f
[ 1200.756409] INFO: task python:639 blocked for more than 120 seconds.
[ 1200.756422]       Tainted: G           OX 3.13.0-85-generic #129-Ubuntu
[ 1200.756425] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1200.756430] python          D ffff88043dc93180     0   639      1 0x00000000
[ 1200.756440]  ffff880420569e10 0000000000000086 ffff8804250fe000 ffff880420569fd8
[ 1200.756449]  0000000000013180 0000000000013180 ffff8804250fe000 ffffffffa0325040
[ 1200.756456]  ffffffffa0325044 ffff8804250fe000 00000000ffffffff ffffffffa0325048
[ 1200.756464] Call Trace:
[ 1200.756512]  [<ffffffff81730089>] schedule_preempt_disabled+0x29/0x70
[ 1200.756521]  [<ffffffff81731ef5>] __mutex_lock_slowpath+0x135/0x1b0
[ 1200.756534]  [<ffffffff81731f8f>] mutex_lock+0x1f/0x2f
[ 1200.756549]  [<ffffffffa0322cc3>] pp_ioctl+0x23/0x50 [ppdev]
[ 1200.756557]  [<ffffffff811d5050>] do_vfs_ioctl+0x2e0/0x4c0
[ 1200.756564]  [<ffffffff811d52b1>] SyS_ioctl+0x81/0xa0
[ 1200.756572]  [<ffffffff8173c39d>] system_call_fastpath+0x1a/0x1f
[ 1320.718178] INFO: task python:639 blocked for more than 120 seconds.
[ 1320.718191]       Tainted: G           OX 3.13.0-85-generic #129-Ubuntu
[ 1320.718194] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1320.718199] python          D ffff88043dc93180     0   639      1 0x00000000
[ 1320.718209]  ffff880420569e10 0000000000000086 ffff8804250fe000 ffff880420569fd8
[ 1320.718219]  0000000000013180 0000000000013180 ffff8804250fe000 ffffffffa0325040
[ 1320.718226]  ffffffffa0325044 ffff8804250fe000 00000000ffffffff ffffffffa0325048
[ 1320.718233] Call Trace:
[ 1320.718281]  [<ffffffff81730089>] schedule_preempt_disabled+0x29/0x70
[ 1320.718290]  [<ffffffff81731ef5>] __mutex_lock_slowpath+0x135/0x1b0
[ 1320.718304]  [<ffffffff81731f8f>] mutex_lock+0x1f/0x2f
[ 1320.718319]  [<ffffffffa0322cc3>] pp_ioctl+0x23/0x50 [ppdev]
[ 1320.718329]  [<ffffffff811d5050>] do_vfs_ioctl+0x2e0/0x4c0
[ 1320.718336]  [<ffffffff811d52b1>] SyS_ioctl+0x81/0xa0
[ 1320.718345]  [<ffffffff8173c39d>] system_call_fastpath+0x1a/0x1f