[Bug 983958] Re: apt-get crashed with SIGSEGV in pkgPolicy::GetCandidateVer()

[Jonathan Thomas]

*** This bug is a duplicate of bug 953574 ***
    https://bugs.launchpad.net/bugs/953574

** Information type changed from Private to Public

** This bug has been marked a duplicate of bug 953574
   apt-get crashed with signal 7 in pkgPolicy::GetCandidateVer()

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https://bugs.launchpad.net/bugs/983958

Title:
  apt-get crashed with SIGSEGV in pkgPolicy::GetCandidateVer()

Status in “apt” package in Ubuntu:
  New

Bug description:
  just started lubuntu and openned firefox.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: apt 0.8.16~exp12ubuntu8
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  Uname: Linux 3.2.0-23-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu4
  Architecture: amd64
  Date: Tue Apr 17 08:47:39 2012
  ExecutablePath: /usr/bin/apt-get
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  ProcCmdline: apt-get check -f -qq
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   SHELL=/bin/sh
  SegvAnalysis:
   Segfault happened at: 0x7f3532474930 <_ZN9pkgPolicy15GetCandidateVerERKN8pkgCache11PkgIteratorE+384>:	movswl (%rax,%rdx,2),%eax
   PC (0x7f3532474930) ok
   source "(%rax,%rdx,2)" (0x014fdf0a) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: apt
  StacktraceTop:
   pkgPolicy::GetCandidateVer(pkgCache::PkgIterator const&) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
   pkgDepCache::Init(OpProgress*) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
   pkgCacheFile::BuildDepCache(OpProgress*) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
   pkgCacheFile::Open(OpProgress*, bool) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
   ?? ()
  Title: apt-get crashed with SIGSEGV in pkgPolicy::GetCandidateVer()
  UpgradeStatus: Upgraded to precise on 2012-04-03 (13 days ago)
  UserGroups:

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