[Bug 949356] Re: update-manager crashed with SIGSEGV in PyEval_EvalFrameEx()

[Apport retracing service]

*** This bug is a duplicate of bug 947837 ***
    https://bugs.launchpad.net/bugs/947837

Thank you for taking the time to report this crash and helping to make
this software better.  This particular crash has already been reported
and is a duplicate of bug #947837, so is being marked as such.  Please
look at the other bug report to see if there is any missing information
that you can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

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** Visibility changed to: Public

** This bug has been marked a duplicate of private bug 947837

** Visibility changed to: Public

** Tags removed: need-amd64-retrace

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https://bugs.launchpad.net/bugs/949356

Title:
  update-manager crashed with SIGSEGV in PyEval_EvalFrameEx()

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  I was trying to recreate bug 938116 and encountered this bug.

  Test case:
  1) expand details in update-manager package list
  2) change your mirror in settings
  3) apply
  4) watch update-manager crash

  Interestingly, the crash will be unreportable because, I believe, the
  package cache is updating and apt-cache policy for update-manager
  shows:

  update-manager:
    Installed: 1:0.156.7
    Candidate: 1:0.156.7
    Version table:
   *** 1:0.156.7 0
          100 /var/lib/dpkg/status

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.7
  ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
  Uname: Linux 3.2.0-18-generic x86_64
  ApportVersion: 1.94-0ubuntu2
  Architecture: amd64
  CheckboxSubmission: fee5e196cb921cbd36888f428b38b488
  CheckboxSystem: 2a6f54df59af338184485e85cbcf0d32
  Date: Wed Mar  7 12:13:04 2012
  ExecutablePath: /usr/bin/update-manager
  ExecutableTimestamp: 1330935159
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/bin/update-manager
  ProcCwd: /home/theman
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/zsh
  SegvAnalysis:
   Segfault happened at: 0x7f1f28bd321b:	cmpw   $0x202,0x26(%rax)
   PC (0x7f1f28bd321b) ok
   source "$0x202" ok
   destination "0x26(%rax)" (0x031d6fe6) not located in a known VMA region (needed writable region)!
  SegvReason: writing unknown VMA
  Signal: 11
  SourcePackage: update-manager
  StacktraceTop:
   ?? () from /usr/lib/python2.7/dist-packages/apt_pkg.so
   PyEval_EvalFrameEx ()
   PyEval_EvalCodeEx ()
   function_call ()
   PyObject_Call ()
  Title: update-manager crashed with SIGSEGV in PyEval_EvalFrameEx()
  UpgradeStatus: Upgraded to precise on 2012-02-21 (14 days ago)
  UserGroups: adm admin audio cdrom dialout dip family floppy fuse libvirtd lpadmin plugdev pulse pulse-access sambashare sbuild scanner video

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