[Bug 1258958] Re: apt-mark segfaults when holding an already held package

[Brian Murray]

It looks to me like the fix for this may be contained in this diff:

https://bazaar.launchpad.net/~ubuntu-core-
dev/apt/ubuntu/revision/1984#cmdline/apt-mark.cc

Particularly the changes around lines 222 to 235 e.g.

for (APT::PackageList::iterator Pkg = pkgset.begin(); Pkg != pkgset.end();)
...

The change may be more obvious in the git branch for apt.

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https://bugs.launchpad.net/bugs/1258958

Title:
  apt-mark segfaults when holding an already held package

Status in “apt” package in Ubuntu:
  Fix Released
Status in “apt” source package in Precise:
  Triaged

Bug description:
  I'm trying to hold back a package but apt-mark keeps segfaulting.

  # apt-mark hold wine1.7 wine1.7-dbg wine1.7-amd64
  wine1.7 was already set on hold.
  Segmentation fault (core dumped)

  dmesg:
  traps: apt-mark[505732] general protection ip:404d5f sp:7fff0f4a3330 error:0 in apt-mark[400000+a000]

  The hold does seem to be put in place for the first package, but any
  additional packages have to be held one-by-one due to the fault.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: apt 0.8.16~exp12ubuntu10.16
  ProcVersionSignature: Ubuntu 3.8.0-33.48~precise1-generic 3.8.13.11
  Uname: Linux 3.8.0-33-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
  Date: Sun Dec  8 19:11:03 2013
  InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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