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[Bug 998348] Re: mythfrontend.real crashed with SIGSEGV in operator!=()

To: mythbuntu-bugs@xxxxxxxxxxxxxxxxxxx
From: JanCeuleers <998348@xxxxxxxxxxxxxxxxxx>
Date: Sat, 12 May 2012 07:15:02 -0000
Reply-to: Bug 998348 <998348@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

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https://bugs.launchpad.net/bugs/998348

Title:
  mythfrontend.real crashed with SIGSEGV in operator!=()

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  New

Bug description:
  Crash while attempting to change channels in livetv

  ProblemType: Crash
  DistroRelease: Ubuntu 11.04
  Package: mythtv-frontend 2:0.24.2+fixes.20120409.e9a0ecb-0ubuntu0mythbuntu3
  ProcVersionSignature: Ubuntu 2.6.38-15.59-generic 2.6.38.8
  Uname: Linux 2.6.38-15-generic x86_64
  Architecture: amd64
  CrashCounter: 1
  CrashDB: mythbuntu
  Date: Sat May 12 09:11:26 2012
  ExecutablePath: /usr/bin/mythfrontend.real
  Installed_mythtv_dbg: 2:0.24.2+fixes.20120409.e9a0ecb-0ubuntu0mythbuntu3
  ProcCmdline: /usr/bin/mythfrontend.real --logfile /var/log/mythtv/mythfrontend.log
  ProcEnviron:
   LANGUAGE=en_GB:en
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7f850cd6f949 <QReadWriteLock::lockForRead()+265>:	mov    0x10(%rax),%eax
   PC (0x7f850cd6f949) ok
   source "0x10(%rax)" (0x00000050) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: mythtv
  StacktraceTop:
   operator!= (this=0x1426358) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:75
   detach (this=0x1426358) at ../../include/QtCore/../../src/corelib/tools/qhash.h:299
   find (this=0x1426358) at ../../include/QtCore/../../src/corelib/tools/qhash.h:865
   QReadWriteLock::lockForRead (this=0x1426358) at thread/qreadwritelock.cpp:155
   TV::GetPlayerReadLock (this=0x1426140, which=-1, file=0x5e3d5b "guidegrid.cpp", location=1482) at tv_play.cpp:11902
  Title: mythfrontend.real crashed with SIGSEGV in operator!=()
  UpgradeStatus: Upgraded to natty on 2012-03-18 (54 days ago)
  UserGroups: adm admin cdrom dialout kvm libvirtd lpadmin mythtv plugdev sambashare

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