[Bug 1249137] [NEW] apt-cache crashed with SIGSEGV in pkgRecords::Lookup()

[Steve Langasek]

Public bug reported:

'apt-cache search' is segfaulting consistently for me here in trusty -
/after/ displaying the results to my query.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: apt 0.9.9.1~ubuntu4
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.6-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Thu Nov  7 16:20:19 2013
ExecutablePath: /usr/bin/apt-cache
InstallationDate: Installed on 2010-09-24 (1140 days ago)
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MarkForUpload: True
ProcCmdline: apt-cache search unity8
SegvAnalysis:
 Segfault happened at: 0x7f24f28daa42 <_ZN10pkgRecords6LookupERKN8pkgCache16DescFileIteratorE+34>:	mov    0x44(%rax),%edx
 PC (0x7f24f28daa42) ok
 source "0x44(%rax)" (0x7f32c259fc5c) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: apt
StacktraceTop:
 pkgRecords::Lookup(pkgCache::DescFileIterator const&) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
 ?? ()
 CommandLine::DispatchArg(CommandLine::Dispatch*, bool) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
 ?? ()
 __libc_start_main (main=0x4078d0, argc=3, ubp_av=0x7fff175433d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff175433c8) at libc-start.c:260
Title: apt-cache crashed with SIGSEGV in pkgRecords::Lookup()
UpgradeStatus: Upgraded to trusty on 2013-10-23 (15 days ago)
UserGroups: adm admin cdrom dialout libvirtd lpadmin mythtv plugdev sambashare src sudo

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-crash need-amd64-retrace trusty

** Information type changed from Private to Public

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https://bugs.launchpad.net/bugs/1249137

Title:
  apt-cache crashed with SIGSEGV in pkgRecords::Lookup()

Status in “apt” package in Ubuntu:
  New

Bug description:
  'apt-cache search' is segfaulting consistently for me here in trusty -
  /after/ displaying the results to my query.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: apt 0.9.9.1~ubuntu4
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Uname: Linux 3.11.0-12-generic x86_64
  ApportVersion: 2.12.6-0ubuntu1
  Architecture: amd64
  CrashCounter: 1
  Date: Thu Nov  7 16:20:19 2013
  ExecutablePath: /usr/bin/apt-cache
  InstallationDate: Installed on 2010-09-24 (1140 days ago)
  InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
  MarkForUpload: True
  ProcCmdline: apt-cache search unity8
  SegvAnalysis:
   Segfault happened at: 0x7f24f28daa42 <_ZN10pkgRecords6LookupERKN8pkgCache16DescFileIteratorE+34>:	mov    0x44(%rax),%edx
   PC (0x7f24f28daa42) ok
   source "0x44(%rax)" (0x7f32c259fc5c) not located in a known VMA region (needed readable region)!
   destination "%edx" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: apt
  StacktraceTop:
   pkgRecords::Lookup(pkgCache::DescFileIterator const&) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
   ?? ()
   CommandLine::DispatchArg(CommandLine::Dispatch*, bool) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
   ?? ()
   __libc_start_main (main=0x4078d0, argc=3, ubp_av=0x7fff175433d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff175433c8) at libc-start.c:260
  Title: apt-cache crashed with SIGSEGV in pkgRecords::Lookup()
  UpgradeStatus: Upgraded to trusty on 2013-10-23 (15 days ago)
  UserGroups: adm admin cdrom dialout libvirtd lpadmin mythtv plugdev sambashare src sudo

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