[apport] mythbackend crashed with SIGSEGV in QMapPrivate<QString, QString>::find()

[Dave M G]

Binary package hint: mythtv

MythTV backend is set to run as a background daemon in the session manager.
When logging in, it reports a crash.
Sometimes it successfully restarts. Sometimes it doesn't. I can't determine what, if anything, decides which way it goes.

ProblemType: Crash
Architecture: i386
CrashCounter: 1
Date: Wed Apr 4 08:48:24 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/mythbackend
Package: mythtv-backend 0.20-svn20070122-0.0ubuntu4
PackageArchitecture: i386
ProcCmdline: mythbackend -d
ProcCwd: /
ProcEnviron:
 LANGUAGE=en_CA:en
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: mythtv
StacktraceTop:
 QMapPrivate<QString, QString>::find ()
 QMap<QString, QString>::find ()
 QMap<QString, QString>::contains ()
 MythContext::GetSetting () from /usr/lib/libmyth-0.20.so.0
 MythContext::GetNumSetting ()
Uname: Linux homebase 2.6.20-13-386 #2 Sun Mar 25 00:18:53 UTC 2007 i686 GNU/Linux
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin mythtv plugdev scanner video

[Martin Pitt (pitti)]

StacktraceTop:QMapPrivate<QString, QString>::find (this=0x813b418, k=@0xb0b042a4) at /usr/include/qt3/qmap.h:499
QMap<QString, QString>::find (this=0x813b06c, k=@0xb0b042a4) at /usr/include/qt3/qmap.h:698
QMap<QString, QString>::contains (this=0x813b06c, k=@0xb0b042a4) at /usr/include/qt3/qmap.h:703
MythContext::GetSetting (this=0x813ad48, key=@0xb0b042a4, defaultval=@0xb0b0425c) at mythcontext.cpp:1820
MythContext::GetNumSetting (this=0x813ad48, key=@0xb0b042a4, defaultval=6544) at mythcontext.cpp:1890

[Brian Murray (brian-murray)]

 status confirmed
 importance medium

[David Morris (dave-greenacre)]

Rejected as the supplied stack trace is unsuitable for svn.mythtv.org Laga and Superm1 are to work on making the packages provide suitable traces etc for upstream bug reports

[spoky99 (luca-archivio)]

I had the same problem. Every time that I swich-on the computer the masterbackend is not running. If I start it from terminal console (sudo /etc/init.d/mythbackend start) it start normally without error and the front-end work well.
this is my log from the new tool of the frnteend
http://mythbuntu.pastebin.com/f13faf473