apt_check.py crashed with SIGSEGV in VerStr()

[Rainer Rohde]

Happened after logging in. The "A problem occurred when checking for updates" indicator icon was active in the panel at this time.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: update-notifier-common 0.118.1ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
NonfreeKernelModules: nvidia wl
ApportVersion: 1.94-0ubuntu1
Architecture: amd64
Date: Mon Mar 5 06:25:59 2012
ExecutablePath: /usr/lib/update-notifier/apt_check.py
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/lib/update-notifier/apt-check
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fe208e02ba6 <_ZN11pkgDepCache8CheckDepEN8pkgCache11DepIteratorEiRNS0_11PkgIteratorE+406>: mov (%rsi),%r8d
 PC (0x7fe208e02ba6) ok
 source "(%rsi)" (0x7fefdc6f1dc8) not located in a known VMA region (needed readable region)!
 destination "%r8d" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: update-notifier
StacktraceTop:
 pkgDepCache::CheckDep(pkgCache::DepIterator, int, pkgCache::PkgIterator&) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
 pkgDepCache::DependencyState(pkgCache::DepIterator&) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
 pkgDepCache::Update(OpProgress*) () 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
Title: apt_check.py crashed with SIGSEGV in pkgDepCache::CheckDep()
UpgradeStatus: Upgraded to precise on 2012-03-02 (3 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 VerStr (this=<optimized out>) at ../build/include/apt-pkg/cacheiterators.h:207
 pkgDepCache::CheckDep (this=0x19b8ea0, Dep=..., Type=0, Res=...) at depcache.cc:355
 CheckDep (Type=0, Dep=<optimized out>, this=0x19b8ea0) at ../build/include/apt-pkg/depcache.h:321
 pkgDepCache::DependencyState (this=0x19b8ea0, D=...) at depcache.cc:610
 pkgDepCache::Update (this=0x19b8ea0, Prog=0x7fffa9d50bf0) at depcache.cc:683

[Brian Murray (brian-murray)]

Looks like the crash happened in apt.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Julian Andres Klode (juliank)]

We believe that this bug is caused by an invalid cache file, or broken hardware, and I am thus closing the bug, so we can focus on newer ones.