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Re: [Bug 1505564] Re: Soft lockup with "block nbdX: Attempted send on closed socket" spam

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Rafael David Tinoco <rafael.tinoco@xxxxxxxxxxxxx>
Date: Mon, 02 Nov 2015 02:00:57 -0000
Reply-to: Bug 1505564 <1505564@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Hello Junien,
(recommendations with *)
I'm replying to you and to the LP bug so it gets proper documentation.
Under comment #91:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1505564/comments/91
You can see my kernel dump analysis, where I am showing you that the
OS is stuck in a "migration thread", possibly because of a lack of
IPIs synchronisation (maybe even an IPI being lost). We have already
seen cases like this - specially in nested virtualisation environments
- and this has been discussed in LKML.
Before we move further I need you to follow some kind of "best
practices" for Proliant Servers:
1 - NMIs caused during MWAIT instruction (caused by intel_idle module):
& HP Proliant Servers - Kernel Panic - NMI - DL360 & DL380 - HPWDT module loaded
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1417580)
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1432837)
* Firmware: Configure a maximum of a C3 c-state for CPU savings (CPU C-STATES)
* Firmware: Disable packed CPU c-state
* Firmware: Disable Cooperative Power Management
* Make sure NOT TO LOAD HPWDT kernel module (LP: #1432837 Fix Released
3.13.0-49.81)
2 - Recently discovered NMIs caused by a BUG in Intel microcode
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1416414)
** If you have Intel based Proliant Servers, because of Intel
microcode issue, use at least* 3.13.0-35.61.
3 - X2APIC support for HP Proliant Servers
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1398497)
* For Proliant prior to G8 (<= G7) use "nox2apic intremap=off" into grub cmdline
* For Proliant G8 use "intremap=no_x2apic_optout" into grub cmdline
4 - HP Proliant Latest Firmware
MOST IMPORTANT
Upgrade server firmware to latest version
There were numerous firmware fixes from HP.
---> If we are facing a firmware problem - related to IPIs, the
inter-processor-interrupts, being missed - we have to make sure this
is reproducible in the latest firmware in order to work together with
HP ROM engineering team.
Summary:
Could you follow all these steps and provide feedback ? I understand
this might take awhile if you have a big number of servers and - if so
- I would take a statistical approach here, by changing only half of
the servers and sticking with the first half as the "control group",
for future comparisons.
Is this feasible ? Looking forward to hearing your feedback.
Best Regards
Rafael Tinoco
Sustaining Engineering

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1505564

Title:
  Soft lockup with "block nbdX: Attempted send on closed socket" spam

Status in linux package in Ubuntu:
  In Progress

Bug description:
  Hi,

  Some of our nova compute hosts regularly freeze, sometimes for a few hours, with kern.log getting spammed with :
  block nbdX: Attempted send on closed socket

  and a few "CPU soft lockup" messages (see attached log). This clears up when the queue gets cleared, eg :
  block nbdX: queue cleared

  trusty hosts with kernel version 3.19.0-30-generic.

  Note that timestamps from kern.log appears to be wrong, it looks like
  the messages are being held, and then all delivered at once when the
  kernel unfreezes.

  Attaching apport files from 2 hosts below.
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Oct  9 13:14 seq
   crw-rw---- 1 root audio 116, 33 Oct  9 13:14 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.1-0ubuntu3.15
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 14.04
  IwConfig: Error: [Errno 2] No such file or directory
  MachineType: HP ProLiant DL385 G7
  Package: linux (not installed)
  PciMultimedia:
   
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=UUID=1bd039df-c419-4cb7-b1ad-fe004d55ccd4 ro console=tty0 console=ttyS1,38400 nosplash
  ProcVersionSignature: Ubuntu 3.19.0-30.34~14.04.1-generic 3.19.8-ckt6
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-30-generic N/A
   linux-backports-modules-3.19.0-30-generic  N/A
   linux-firmware                             1.127.15
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  trusty uec-images
  Uname: Linux 3.19.0-30-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 12/08/2012
  dmi.bios.vendor: HP
  dmi.bios.version: A18
  dmi.chassis.type: 23
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrA18:bd12/08/2012:svnHP:pnProLiantDL385G7:pvr:cvnHP:ct23:cvr:
  dmi.product.name: ProLiant DL385 G7
  dmi.sys.vendor: HP
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Oct  9 12:37 seq
   crw-rw---- 1 root audio 116, 33 Oct  9 12:37 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.1-0ubuntu3.15
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 14.04
  IwConfig: Error: [Errno 2] No such file or directory
  MachineType: HP ProLiant DL360p Gen8
  Package: linux (not installed)
  PciMultimedia:
   
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=UUID=f3c6cae8-09dc-4607-8675-c9123ea9c9fd ro console=tty0 console=ttyS1,38400 nosplash
  ProcVersionSignature: Ubuntu 3.19.0-30.34~14.04.1-generic 3.19.8-ckt6
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-30-generic N/A
   linux-backports-modules-3.19.0-30-generic  N/A
   linux-firmware                             1.127.15
  RfKill: Error: [Errno 2] No such file or directory
  StagingDrivers: visorchannel visorutil
  Tags:  trusty uec-images staging
  Uname: Linux 3.19.0-30-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 11/14/2013
  dmi.bios.vendor: HP
  dmi.bios.version: P71
  dmi.chassis.type: 23
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrP71:bd11/14/2013:svnHP:pnProLiantDL360pGen8:pvr:cvnHP:ct23:cvr:
  dmi.product.name: ProLiant DL360p Gen8
  dmi.sys.vendor: HP
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Oct 28 13:07 seq
   crw-rw---- 1 root audio 116, 33 Oct 28 13:07 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.1-0ubuntu3.16
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 14.04
  IwConfig: Error: [Errno 2] No such file or directory
  MachineType: HP ProLiant DL360p Gen8
  Package: linux (not installed)
  PciMultimedia:
   
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=46ac2c1e-5f16-45bd-b383-e952f78fd142 ro console=tty0 console=ttyS1,38400 nosplash crashkernel=384M-:512M
  ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-29-generic N/A
   linux-backports-modules-3.13.0-29-generic  N/A
   linux-firmware                             1.127.15
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  trusty uec-images
  Uname: Linux 3.13.0-29-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 11/14/2013
  dmi.bios.vendor: HP
  dmi.bios.version: P71
  dmi.chassis.type: 23
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrP71:bd11/14/2013:svnHP:pnProLiantDL360pGen8:pvr:cvnHP:ct23:cvr:
  dmi.product.name: ProLiant DL360p Gen8
  dmi.sys.vendor: HP
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Oct 28 16:31 seq
   crw-rw---- 1 root audio 116, 33 Oct 28 16:31 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.1-0ubuntu3.18
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 14.04
  IwConfig: Error: [Errno 2] No such file or directory
  MachineType: HP ProLiant DL385 G7
  Package: linux (not installed)
  PciMultimedia:
   
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=29988d72-90fe-4329-a0c1-0e3bfb88beab ro console=tty0 console=ttyS1,38400 nosplash crashkernel=384M-:512M
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127.15
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  trusty uec-images
  Uname: Linux 3.13.0-24-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  WifiSyslog:
   Oct 29 07:58:52 druk kernel: [55713.346292] nr_pdflush_threads exported in /proc is scheduled for removal
   Oct 29 07:58:52 druk kernel: [55713.346523] sysctl: The scan_unevictable_pages sysctl/node-interface has been disabled for lack of a legitimate use case.  If you have one, please send an email to linux-mm@xxxxxxxxx.
  _MarkForUpload: True
  dmi.bios.date: 02/02/2014
  dmi.bios.vendor: HP
  dmi.bios.version: A18
  dmi.chassis.type: 23
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrA18:bd02/02/2014:svnHP:pnProLiantDL385G7:pvr:cvnHP:ct23:cvr:
  dmi.product.name: ProLiant DL385 G7
  dmi.sys.vendor: HP
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Oct 28 19:56 seq
   crw-rw---- 1 root audio 116, 33 Oct 28 19:56 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.1-0ubuntu3.18
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 14.04
  IwConfig: Error: [Errno 2] No such file or directory
  MachineType: HP ProLiant DL360p Gen8
  Package: linux (not installed)
  PciMultimedia:
   
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=f3c6cae8-09dc-4607-8675-c9123ea9c9fd ro console=tty0 console=ttyS1,38400 nosplash crashkernel=384M-:512M
  ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-29-generic N/A
   linux-backports-modules-3.13.0-29-generic  N/A
   linux-firmware                             1.127.15
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  trusty uec-images
  Uname: Linux 3.13.0-29-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  WifiSyslog:
   Oct 29 07:41:34 orlo kernel: [42337.380135] qbrce3298b1-cb: port 2(tapce3298b1-cb) entered disabled state
   Oct 29 07:41:34 orlo kernel: [42337.380543] device tapce3298b1-cb left promiscuous mode
   Oct 29 07:41:34 orlo kernel: [42337.380580] qbrce3298b1-cb: port 2(tapce3298b1-cb) entered disabled state
   Oct 29 07:41:35 orlo kernel: [42338.223036] type=1400 audit(1446104495.424:137): apparmor="STATUS" operation="profile_remove" profile="unconfined" name="libvirt-80a3c754-9f62-4011-baea-b3a8f37d3746" pid=11554 comm="apparmor_parser"
   Oct 29 07:41:35 orlo kernel: [42338.308192] qbrce3298b1-cb: port 1(qvbce3298b1-cb) entered disabled state
  _MarkForUpload: True
  dmi.bios.date: 11/14/2013
  dmi.bios.vendor: HP
  dmi.bios.version: P71
  dmi.chassis.type: 23
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrP71:bd11/14/2013:svnHP:pnProLiantDL360pGen8:pvr:cvnHP:ct23:cvr:
  dmi.product.name: ProLiant DL360p Gen8
  dmi.sys.vendor: HP
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Oct 29 21:10 seq
   crw-rw---- 1 root audio 116, 33 Oct 29 21:10 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.1-0ubuntu3.18
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 14.04
  IwConfig: Error: [Errno 2] No such file or directory
  MachineType: HP ProLiant DL360p Gen8
  Package: linux (not installed)
  PciMultimedia:
   
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-31-generic root=UUID=f3c6cae8-09dc-4607-8675-c9123ea9c9fd ro console=tty0 console=ttyS1,38400 nosplash crashkernel=384M-:512M
  ProcVersionSignature: Ubuntu 3.19.0-31.36~14.04.1-generic 3.19.8-ckt7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-31-generic N/A
   linux-backports-modules-3.19.0-31-generic  N/A
   linux-firmware                             1.127.16
  RfKill: Error: [Errno 2] No such file or directory
  StagingDrivers: visorchannel visorutil
  Tags:  trusty uec-images staging
  Uname: Linux 3.19.0-31-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 11/14/2013
  dmi.bios.vendor: HP
  dmi.bios.version: P71
  dmi.chassis.type: 23
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrP71:bd11/14/2013:svnHP:pnProLiantDL360pGen8:pvr:cvnHP:ct23:cvr:
  dmi.product.name: ProLiant DL360p Gen8
  dmi.sys.vendor: HP
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Oct 30 12:31 seq
   crw-rw---- 1 root audio 116, 33 Oct 30 12:31 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.1-0ubuntu3.18
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 14.04
  IwConfig: Error: [Errno 2] No such file or directory
  MachineType: HP ProLiant DL360p Gen8
  Package: linux (not installed)
  PciMultimedia:
   
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-31-generic root=UUID=46ac2c1e-5f16-45bd-b383-e952f78fd142 ro console=tty0 console=ttyS1,38400 nosplash crashkernel=384M-:512M
  ProcVersionSignature: Ubuntu 3.19.0-31.36~14.04.1-generic 3.19.8-ckt7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-31-generic N/A
   linux-backports-modules-3.19.0-31-generic  N/A
   linux-firmware                             1.127.16
  RfKill: Error: [Errno 2] No such file or directory
  StagingDrivers: visorchannel visorutil
  Tags:  trusty uec-images staging
  Uname: Linux 3.19.0-31-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 11/14/2013
  dmi.bios.vendor: HP
  dmi.bios.version: P71
  dmi.chassis.type: 23
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrP71:bd11/14/2013:svnHP:pnProLiantDL360pGen8:pvr:cvnHP:ct23:cvr:
  dmi.product.name: ProLiant DL360p Gen8
  dmi.sys.vendor: HP

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References

[Bug 1505564] [NEW] Soft lockup with "block nbdX: Attempted send on closed socket" spam
From: Junien Fridrick, 2015-10-13
[Bug 1505564] Re: Soft lockup with "block nbdX: Attempted send on closed socket" spam
From: Rafael David Tinoco, 2015-10-30