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[Bug 1382814] Re: mythbackend crashed with SIGSEGV in MainServer::customEvent()

 

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https://bugs.launchpad.net/bugs/1382814

Title:
  mythbackend crashed with SIGSEGV in MainServer::customEvent()

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  New

Bug description:
  Started happening after upgrading from mythtv 2:0.25.2+fixes.20120802.46cab93-0ubuntu1
  No obvious issues with the upgrade itsself.  Ran mythtv-setup to update the DB.  Had that run mythfilldatabase after that.  Saw some errors suggesting connectivity issues with the backend.

  Before the crash, the mythtv frontend and the web interface are very
  slow and often give errors about the backend not responding.

  mythtv is not usable in current state.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: mythtv-backend 2:0.27.4+fixes.20141018.b305eb5-0ubuntu0mythbuntu1 [origin: LP-PPA-mythbuntu-0.27]
  ProcVersionSignature: Ubuntu 3.2.0-70.105-generic 3.2.63
  Uname: Linux 3.2.0-70-generic x86_64
  NonfreeKernelModules: nvidia
  .var.log.mythtv.jamu.log:
   
  .var.log.mythtv.mtd.log:
   mtd started at Sat Sep 29 10:59:05 2012
   mtd is running on a host called mythtv2
   10:59:05: Waiting for connections/jobs
   10:59:05: mtd is listening on port 2442
  .var.log.mythtv.mythavtest.log:
   
  .var.log.mythtv.mythccextractor.log:
   
  .var.log.mythtv.mythjobqueue.log:
   
  .var.log.mythtv.mythlcdserver.log:
   
  .var.log.mythtv.mythmediaserver.log:
   
  .var.log.mythtv.mythshutdown.log:
   
  .var.log.mythtv.mythtranscode.log:
   
  .var.log.mythtv.mythutil.log:
   
  .var.log.mythtv.mythwelcome.log:
   
  ApportVersion: 2.0.1-0ubuntu17.7
  Architecture: amd64
  CrashDB: mythbuntu
  Date: Sat Oct 18 11:20:45 2014
  ExecutablePath: /usr/bin/mythbackend
  InstallationMedia: Mythbuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
  Installed_mythtv_dbg: 2:0.27.4+fixes.20141018.b305eb5-0ubuntu0mythbuntu1
  MarkForUpload: True
  ProcCmdline: mythbackend
  ProcEnviron:
   TERM=xterm
   SHELL=/bin/bash
   PATH=(custom, user)
   LANG=en_US.UTF-8
  SegvAnalysis:
   Segfault happened at: 0x46b827 <MainServer::customEvent(QEvent*)+227>:	callq  *%rdx
   PC (0x0046b827) ok
   source "*%rdx" (0x74002000640065) not located in a known VMA region (needed readable region)!
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: mythtv
  StacktraceTop:
   MainServer::customEvent (this=0x11448d0, e=0x1116100) at mainserver.cpp:913
   QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
   QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
   QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
   ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
  Title: mythbackend crashed with SIGSEGV in MainServer::customEvent()
  UpgradeStatus: Upgraded to precise on 2012-09-29 (748 days ago)
  UserGroups: adm admin cdrom dialout lpadmin mythtv plugdev sambashare video

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