[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2019-02-04 Thread bugproxy
--- Comment From cha...@us.ibm.com 2019-02-04 12:00 EDT---
*** Bug 167294 has been marked as a duplicate of this bug. ***

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https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Released

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 4446.361899] systemd[1]: Failed to start Journal Service.
  [ 4897.632142] systemd[1]: Failed to start Journal Service.


  

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-06-22 Thread bugproxy
--- Comment From rajanikanth...@in.ibm.com 2018-06-22 05:45 EDT---
Hi,

We have verified this bug on "4.15.0-24-generic #26-Ubuntu"  kernel,
it's working fine.

root@boslcp4:~# uname -a
Linux boslcp4 4.15.0-24-generic #26-Ubuntu SMP Wed Jun 13 08:43:33 UTC 2018 
ppc64le ppc64le ppc64le GNU/Linux
root@boslcp4:~#

Thanks

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Committed

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] 

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-06-20 Thread bugproxy
--- Comment From jos...@br.ibm.com 2018-06-20 15:22 EDT---
Hello,

>From the the development side it looks very good: both hotplug and hot
unplug are working good.

Thank you very much,

Ziviani

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Committed

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 4446.361899] systemd[1]: Failed to start Journal 

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-06-07 Thread bugproxy
--- Comment From lagar...@br.ibm.com 2018-06-07 10:38 EDT---
Hello Frank,

Just to reinforce what Ziviani told in some comments before, the issue
being discussed here, even though affecting CPU hot plug on Power, is
not specifically related to Power. The issue we are seeing with CPU hot
plug is just a side effect of a more serious bug in blk_mq.

The blk_mq problem that the patches pointed in this issue fix is a
general blk_mq issue affecting all platforms that use this
infrastructure. My understanding is that there has been lots of bug
fixing in this area upstream lately.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  In Progress

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-05-16 Thread bugproxy
--- Comment From lagar...@br.ibm.com 2018-05-16 10:11 EDT---
Patch set was resent to Canonical mailing list by Ziviani.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  In Progress

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 4446.361899] systemd[1]: Failed to start Journal Service.
  [ 4897.632142] systemd[1]: Failed to start Journal Service.


  ^Z

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-05-10 Thread bugproxy
--- Comment From jos...@br.ibm.com 2018-05-10 10:19 EDT---
As per my comment in https://bugzilla.linux.ibm.com/show_bug.cgi?id=167294#c50, 
the build from
https://apps.na.collabserv.com/files/app#/folder/4e205b7a-8126-4d09-8a3e-4bec14c051f2/
 fixes this issue.

-- 
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https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 4446.361899] systemd[1]: Failed to start 

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-04-27 Thread bugproxy
--- Comment From jos...@br.ibm.com 2018-04-27 16:54 EDT---
I was told to write a small documentation describing what happens without the 
two patches mentioned in my comment #20.

We basically lose the ability to hotplug/unplug CPUs into virtual
machines. Considering that blk-mq enqueue tasks using
'for_each_present_cpu()' (that iterates over CPUs in systems that don't
support CPU hotplug - refer to those patches for technical details) we
can also have problems if tasks are scheduled to CPUs present but not
online.

So I suggest to *not* run VMs with extra CPUs to be hotplugged later,
like:

-smp 8,sockets=1,cores=2,threads=8,maxcpus=16

or

16

If we want a guest with 16 CPUs it's better to define it beforehand, for
instance:

-smp 16,sockets=1,cores=2,threads=8

or

16

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task 

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-04-21 Thread bugproxy
--- Comment From jos...@br.ibm.com 2018-04-21 15:29 EDT---
Ah, forget it, it's in 4.15.0-15.16 not 4.15.0-16. Anyway, you can revert it if 
required.

Thank you

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 4446.361899] systemd[1]: Failed to start Journal Service.
  [ 4897.632142] systemd[1]: Failed to start Journal Service.


  ^Z
  ^X
  ^C
  ^Z
 

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-04-21 Thread bugproxy
--- Comment From jos...@br.ibm.com 2018-04-21 15:14 EDT---
Hi Seth,

Just another point is that it's related
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1765232) to kernel
4.15.0-15 but as per comment #11 these patches were applied in
4.15.0-16.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 4446.361899] systemd[1]: Failed to start 

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-04-21 Thread bugproxy
--- Comment From jos...@br.ibm.com 2018-04-21 14:38 EDT---
Hello Seth,

Without those patches CPU hoplug doesn't work but the issue related on
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1765232 looks more
urgent yet. I agree to revert it if necessary.

Thanks

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 4446.361899] systemd[1]: Failed 

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-04-10 Thread bugproxy
--- Comment From jos...@br.ibm.com 2018-04-10 12:56 EDT---
Hello Indira!

Not yet. I just checked the most recent upstream version and the code
fix isn't there. I'll keep my eye on the next updates.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 4446.361899] systemd[1]: Failed to start Journal Service.
  [ 4897.632142] systemd[1]: Failed to start 

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-04-10 Thread bugproxy
--- Comment From indira.pr...@in.ibm.com 2018-04-10 07:24 EDT---
Hi Jose,

Is this fix available in official ubutnu1804 build

Regards,
Indira

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 4446.361899] systemd[1]: Failed to start Journal Service.
  [ 4897.632142] systemd[1]: Failed to start Journal Service.


  ^Z
  ^X
  ^C
  ^Z
  ^X
  ^C

  7. 

[Kernel-packages] [Bug 1759723] Comment bridged from LTC Bugzilla

2018-04-03 Thread bugproxy
--- Comment From jos...@br.ibm.com 2018-04-03 09:21 EDT---
Hi Indira,

Excelent news. The backport is already merged into Ubuntu, so it should
be available in the next bionic update.

Thank you

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1759723

Title:
  ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle
  hangs after hotplug CPU add operation.

Status in The Ubuntu-power-systems project:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed

Bug description:
  Problem Description:
  ===
  Performed HOTPLUG cpu attach operation for the guest and guest console 
becomes unresponsive.

  Steps to re-create:
  ==
  1. updated boslcp3 host BMC :116 & PNOR: 20180302 levels
   
  2. Installed Ubuntu1804 on boslcp3 host & guests with trap issue fixes

  root@boslcp3:/home# uname -a
  Linux boslcp3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3:/home# uname -r
  4.15.0-12-generic

  root@boslcp3g3:/kte/tools/setup.d# uname -a
  Linux boslcp3g3 4.15.0-12-generic #13+leo20180320 SMP Tue Mar 20 13:10:42 CDT 
2018 ppc64le ppc64le ppc64le GNU/Linux
  root@boslcp3g3:/kte/tools/setup.d# uname -r
  4.15.0-12-generic

  3. Started HTX & stress-ng for on guest for 10-15 min

  4. Cleaned up the tests to perform hot-plug and ensure enough memory
  and cpu was there (killed all Process using kill)

  5. Performed cpu hot-plug and guest went into hung state

  Before Hotplug:

  root@boslcp3:~# virsh dumpxml boslcp3g3 | grep vcpu
64

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  



  root@boslcp3:~#  

  6. After this operation, guest becomes unrepsonsive as below

  
  root@boslcp3g3:~# [ 3626.140773] INFO: task jbd2/vda2-8:584 blocked for more 
than 120 seconds.
  [ 3626.146375]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146457] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146624] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3626.146699]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.146768] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.146939] INFO: task rs:main Q:Reg:1995 blocked for more than 120 
seconds.
  [ 3626.147016]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147088] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147285] INFO: task kworker/u128:2:57691 blocked for more than 120 
seconds.
  [ 3626.147361]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147622] INFO: task smbd:1449 blocked for more than 120 seconds.
  [ 3626.147686]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.147760] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.147875] INFO: task smbd:1452 blocked for more than 120 seconds.
  [ 3626.147937]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148010] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148110] INFO: task smbd:1454 blocked for more than 120 seconds.
  [ 3626.148173]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3626.148344] INFO: task cron:1461 blocked for more than 120 seconds.
  [ 3626.148406]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3626.148488] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.

  root@boslcp3g3:~#
  root@boslcp3g3:~# ps -ef | grep stress-ng
  [ 3746.978098] INFO: task jbd2/vda2-8:584 blocked for more than 120 seconds.
  [ 3746.978221]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978301] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 3746.978447] INFO: task systemd-journal:665 blocked for more than 120 
seconds.
  [ 3746.978534]   Tainted: GW4.15.0-12-generic 
#13+leo20180320
  [ 3746.978607] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [ 4446.361899] systemd[1]: Failed to start Journal Service.
  [ 4897.632142] systemd[1]: Failed to start