[Kernel-packages] [Bug 1813873] Re: Userspace break as a result of missing patch backport

2019-03-07 Thread markw
Will the fix for 16.04 32 bit be available through normal channels in the near 
future?
Thank you.

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https://bugs.launchpad.net/bugs/1813873

Title:
  Userspace break as a result of missing patch backport

Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Xenial:
  Fix Committed
Status in linux source package in Bionic:
  Fix Released
Status in linux source package in Cosmic:
  Fix Released

Bug description:
  Hi,

  The most recent set of Ubuntu kernels applied a variety of tty patches
  including:
  
https://github.com/torvalds/linux/commit/c96cf923a98d1b094df9f0cf97a83e118817e31b

  But have not applied the more recent
  
https://github.com/torvalds/linux/commit/d3736d82e8169768218ee0ef68718875918091a0
  patch.

  This second patch is required to prevent a rather serious regression
  where userspace applications reading from stdin can receive EAGAIN
  when they should not.

  I will try to link correspondence from the mailing list archives once
  they are available, but for now if you have access to the linux-
  console mailing list you can find discussion under the thread
  "Userspace break? read from STDIN returns EAGAIN if tty is "touched"".

  I would appreciate it if this could be examined soon as it is a
  regression on userspace.

  Thanks
  Michael

  
  Good:
  4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018

  
  Bad:
  4.15.0-44-generic #47-Ubuntu SMP Mon Jan 14 11:26:59 UTC 2019

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[Kernel-packages] [Bug 1815122] Re: Unable to login via tty

2019-02-07 Thread markw
This also affects my 32 bit 16.04 system.

Can't login via tty, can login via ssh.

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https://bugs.launchpad.net/bugs/1815122

Title:
  Unable to login via tty

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I am using Ubuntu 16.04.

  After upgrading the kernel from 4.4.0-141.167-generic to
  4.4.0-142.168-generic I am experiencing problem logging in via the
  tty. I am able to provide my username, but the terminal automatically
  submit password before I am able to type it. If I start the computer
  with the previous kernel (4.4.0-141.167) it works as expected.

  
  I have done strace on the tty in both scenarios while performing the login 
with the following command:

  "sudo strace -p 1572 -s 1024 -vff -o tty-login-issue/login"

  4.4.0-141.167-generic (works):
  https://gist.github.com/ivarconr/b022d2b4cadfc654031e8a930bf4408b

  4.4.0-142.168-generic (fails): 
  https://gist.github.com/ivarconr/603409ad1f0a3343a7f44a854283befc

  
  Let me know if you need me to provide any additional details.
  --- 
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC0:  ivaosthu   3706 F pulseaudio
   /dev/snd/controlC1:  ivaosthu   3706 F pulseaudio
  CurrentDesktop: i3
  DistroRelease: Ubuntu 16.04
  HibernationDevice: RESUME=UUID=08d4aeb0-e54b-475e-8a26-b9e8b488a314
  InstallationDate: Installed on 2016-08-12 (909 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
  MachineType: LENOVO 20EQS2HW00
  Package: linux (not installed)
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-142-generic.efi.signed 
root=UUID=a0472864-d2ab-4f9d-8b4c-e89db4dbd51b ro quiet nomodeset splash 
vt.handoff=7
  ProcVersionSignature: Ubuntu 4.4.0-142.168-generic 4.4.167
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-142-generic N/A
   linux-backports-modules-4.4.0-142-generic  N/A
   linux-firmware 1.157.21
  Tags:  xenial
  Uname: Linux 4.4.0-142-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom davfs2 dip docker lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 05/10/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N1EET52W (1.26 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20EQS2HW00
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40697 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrN1EET52W(1.26):bd05/10/2016:svnLENOVO:pn20EQS2HW00:pvrThinkPadP50:rvnLENOVO:rn20EQS2HW00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20EQS2HW00
  dmi.product.version: ThinkPad P50
  dmi.sys.vendor: LENOVO
  --- 
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  AudioDevicesInUse:
   USERPID ACCESS COMMAND
   /dev/snd/controlC0:  ivaosthu   3706 F pulseaudio
   /dev/snd/controlC1:  ivaosthu   3706 F pulseaudio
  CurrentDesktop: i3
  DistroRelease: Ubuntu 16.04
  HibernationDevice: RESUME=UUID=08d4aeb0-e54b-475e-8a26-b9e8b488a314
  InstallationDate: Installed on 2016-08-12 (909 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
  MachineType: LENOVO 20EQS2HW00
  Package: linux (not installed)
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-142-generic.efi.signed 
root=UUID=a0472864-d2ab-4f9d-8b4c-e89db4dbd51b ro quiet nomodeset splash 
vt.handoff=7
  ProcVersionSignature: Ubuntu 4.4.0-142.168-generic 4.4.167
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-142-generic N/A
   linux-backports-modules-4.4.0-142-generic  N/A
   linux-firmware 1.157.21
  Tags:  xenial
  Uname: Linux 4.4.0-142-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom davfs2 dip docker lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 05/10/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N1EET52W (1.26 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20EQS2HW00
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40697 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrN1EET52W(1.26):bd05/10/2016:svnLENOVO:pn20EQS2HW00:pvrThinkPadP50:rvnLENOVO:rn20EQS2HW00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20EQS2HW00
  dmi.product.version: ThinkPad P50
  dmi.sys.vendor: LENOVO

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