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[Bug 1017259] Re: mythfrontend.real crashed with SIGSEGV in QMutex::lock()

 

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 has moved on to a new version and believes
this to be fixed. 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 => Expired

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https://bugs.launchpad.net/bugs/1017259

Title:
  mythfrontend.real crashed with SIGSEGV in QMutex::lock()

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  Expired

Bug description:
  This crash happened after the following actions:
  I entered the file path's for the video files, covers and fanart.
  Then I opened the video gallery and mythtv asked if it should scan for video files.
  I awnsered it and after mythtv was finished with scanning I browsed through my movies.
  mythtv was scanning for covers in the background.
  When I wanted to leave the video part of mythtv it stopped reacting and a moment later the crash report popped up.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: mythtv-frontend 2:0.25.0+fixes.20120622.73bc45e-0ubuntu0mythbuntu4 [origin: LP-PPA-mythbuntu-0.25]
  ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
  Uname: Linux 3.2.0-25-generic x86_64
  NonfreeKernelModules: wl
  .var.log.mythtv.mythavtest.log:
   
  .var.log.mythtv.mythbackend.log:
   
  .var.log.mythtv.mythccextractor.log:
   
  .var.log.mythtv.mythcommflag.log:
   
  .var.log.mythtv.mythfilldatabase.log:
   
  .var.log.mythtv.mythjobqueue.log:
   
  .var.log.mythtv.mythlcdserver.log:
   
  .var.log.mythtv.mythmediaserver.log:
   
  .var.log.mythtv.mythmetadatalookup.log:
   
  .var.log.mythtv.mythpreviewgen.log:
   
  .var.log.mythtv.mythshutdown.log:
   
  .var.log.mythtv.mythtranscode.log:
   
  .var.log.mythtv.mythtv.setup.log:
   
  .var.log.mythtv.mythutil.log:
   
  .var.log.mythtv.mythwelcome.log:
   
  ApportVersion: 2.0.1-0ubuntu8
  Architecture: amd64
  CrashDB: mythbuntu
  Date: Sun Jun 24 23:35:31 2012
  ExecutablePath: /usr/bin/mythfrontend.real
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
  Installed_mythtv_dbg: 0.0
  MythTVDirectoryPermissions:
   total 16
   drwxrwsr-x 2 mythtv mythtv 4096 mei 27 15:34 bare-client
   drwxrwsr-x 2 mythtv mythtv 4096 jun 22 04:06 music
   drwxrwxr-x 3 mythtv mythtv 4096 mei 27 17:51 pictures
   drwxr-xr-x 2 root   root   4096 jun 22 04:06 videos
  ProcCmdline: /usr/bin/mythfrontend.real --syslog local7
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=nl_NL.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7fc24ae5393e <_ZN6QMutex4lockEv+14>:	mov    (%rdi),%rbx
   PC (0x7fc24ae5393e) ok
   source "(%rdi)" (0x80000004a) not located in a known VMA region (needed readable region)!
   destination "%rbx" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: mythtv
  StacktraceTop:
   QMutex::lock() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
   QCoreApplication::postEvent(QObject*, QEvent*, int) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
   MetadataFactory::customEvent(QEvent*) () from /usr/lib/libmythmetadata-0.25.so.0
   QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
   QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
  Title: mythfrontend.real crashed with SIGSEGV in QMutex::lock()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin mythtv plugdev sambashare sudo
  modified.conffile..etc.mythtv.session.settings: [deleted]

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References