[Bug 1734405] Re: package samba 2:4.3.11+dfsg-0ubuntu0.16.04.11 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1

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** Tags removed: need-duplicate-check

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Title:
  package samba 2:4.3.11+dfsg-0ubuntu0.16.04.11 failed to
  install/upgrade: subprocess new pre-removal script returned error exit
  status 1

Status in samba package in Ubuntu:
  New

Bug description:
  Same scenario as Bug #1731796; probably same root cause.

  Observed the lockup a bit more closely this time.

  It began with compiz in Z state (according to top), consuming 100% of
  a cpu. In this situation, it was possible to ssh to the system.

  I was running software updater, and could see various activity by
  aptd, dpkg, and htppd - the latter running as -apt or some similar
  named system account.

  Unfortunately, "software updater" is not a parent for this activity,
  so I couldn't be sure that it had exited (and it might eventually have
  blocked on compiz), but I waited until the apt/dpkg activity stopped
  before power cycling.

  This time the system came back much more sane - no need to run "dpkg
  --reconfigure -a" from ssh.

  NOTE - as well as the soft lockups (which I didn't verify this time),
  we have the zombie process.

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: samba 2:4.3.11+dfsg-0ubuntu0.16.04.11
  ProcVersionSignature: Ubuntu 4.4.0-98.121-generic 4.4.90
  Uname: Linux 4.4.0-98-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.20.1-0ubuntu2.10
  Architecture: amd64
  Date: Fri Nov 24 16:50:11 2017
  ErrorMessage: subprocess new pre-removal script returned error exit status 1
  InstallationDate: Installed on 2012-04-26 (2038 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  NmbdLog:
   
  OtherFailedConnect: Yes
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.2
   apt  1.2.24
  SambaServerRegression: Yes
  SmbConfIncluded: Yes
  SmbLog:
   
  SourcePackage: samba
  Title: package samba 2:4.3.11+dfsg-0ubuntu0.16.04.11 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1
  UpgradeStatus: Upgraded to xenial on 2017-03-31 (238 days ago)

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