mythbuntu-bugs team mailing list archive

[Thomas Mashos <846953@xxxxxxxxxxxxxxxxxx>]

We really do appreciate you opening this ticket to help improve
Mythbuntu, but it needs to be closed for a number of reasons. The
biggest one is that upstream believes this to be fixed in the latest
version. Could you please verify if this issue still exists in the
latest version?

Please do not let the closing of this ticket dissuade you from opening a
new ticket if this (or any other) problem occurs with the newer
versions.

** Changed in: mythbuntu
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/846953

Title:
  mythbackend crashed with SIGSEGV in pthread_mutex_lock()

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  Won't Fix

Bug description:
  mythbackend didn't cleanly shutdown in the process of updating it via
  apt-get from mythbuntu ppa

  ProblemType: Crash
  DistroRelease: Ubuntu 11.04
  Package: mythtv-backend 2:0.25.0~master.20110911.5b19e55-0ubuntu0mythbuntu2
  ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
  Uname: Linux 2.6.38-10-generic x86_64
  NonfreeKernelModules: nvidia
  Architecture: amd64
  CrashDB: mythbuntu
  Date: Sun Sep 11 13:14:40 2011
  ExecutablePath: /usr/bin/mythbackend
  InstallationMedia: Mythbuntu 11.04 "Natty Narwhal" - Release amd64 (20110426)
  Installed_mythtv_dbg: 2:0.25.0~master.20110911.5b19e55-0ubuntu0mythbuntu2
  ProcCmdline: /usr/bin/mythbackend --syslog local7 --user mythtv
  ProcEnviron:
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
  SegvAnalysis:
   Segfault happened at: 0x7f38552de394 <pthread_mutex_lock+4>:	mov    0x10(%rdi),%esi
   PC (0x7f38552de394) ok
   source "0x10(%rdi)" (0x65007200f60078) not located in a known VMA region (needed readable region)!
   destination "%esi" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: mythtv
  StacktraceTop:
   pthread_mutex_lock () from /lib/x86_64-linux-gnu/libpthread.so.0
   QWaitCondition::wakeAll (this=0x7f3844ce0400) at thread/qwaitcondition_unix.cpp:141
   PreviewGenerator::TeardownAll (this=0x7f3844ce03d0) at previewgenerator.cpp:91
   PreviewGenerator::deleteLater (this=0x7f3844ce03d0) at previewgenerator.cpp:97
   PreviewGeneratorQueue::~PreviewGeneratorQueue (this=0x7f38440ce190, __in_chrg=<value optimized out>) at previewgeneratorqueue.cpp:57
  Title: mythbackend crashed with SIGSEGV in pthread_mutex_lock()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: audio cdrom dialout video
  XsessionErrors:
   (xfwm4:1811): xfwm4-WARNING **: The display does not support the XComposite extension.
   (xfwm4:1811): xfwm4-WARNING **: Compositing manager disabled.
   (nm-applet:1829): libappindicator-WARNING **: Unable to send signal for NewStatus: The connection is closed

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