Ubuntu
mythtv package

Mythbackend crashes because of remote slave backend

Bug #93250 reported by Philippe
2
Affects Status Importance Assigned to Milestone
mythtv (Ubuntu)
Fix Released
Undecided
Kees Cook

Bug Description

Binary package hint: mythtv

The problem and solution is described here:
http://www.archivesat.com/MythTV_development/thread2049262.htm

In short: When there is a second remote backend (slave) configured and a frontend requests Tuner Info in the System Info panel, the master backend crashed with:

2007-03-17 17:29:48.729 MainServer: HandleRemoteEncoder(cmd GET_STATE) Unknown encoder: 1, exiting

ProblemType: Crash
Architecture: amd64
CrashCounter: 1
Date: Sat Mar 17 17:29:59 2007
Disassembly: 0x2aaaaadd619c:
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/mythfrontend
Package: mythtv-frontend 0.20-svn20070122-0.0ubuntu2
PackageArchitecture: amd64
ProcCmdline: mythfrontend -geometry 640x480
ProcCwd: /media/hdc1/home/fiepel
ProcEnviron:
 SHELL=/bin/bash
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games:/usr/lib/jre/bin:/usr/local/kde/bin:/usr/local/aqsis/bin
 LANG=en_US.UTF-8
 LANGUAGE=en_US.UTF-8
Signal: 11
SourcePackage: mythtv
StacktraceTop:
 ?? ()
 QApplication::~QApplication ()
 ?? ()
 __libc_start_main () from /lib/libc.so.6
 ?? ()
Uname: Linux tower 2.6.20-11-generic #2 SMP Thu Mar 15 03:43:56 UTC 2007 x86_64 GNU/Linux
UserGroups: adm audio cdrom dialout dip fax floppy lpadmin media plugdev scanner tape video

Related branches

lp:ubuntu/karmic/mythtv
Revision history for this message
Philippe (philippepiatkiewitz) wrote :
Revision history for this message
Kees Cook (kees) wrote :

This is actually two bugs, the one you've described is causing the exit, and the exit is causing the segfault (bug 90710). Did the patch in the above URL get into the 0.20-fixes subversion tree?

Revision history for this message
Philippe (philippepiatkiewitz) wrote : Re: [Bug 93250] Re: Mythbackend crashes because of remote slave backend

On Sun, 2007-03-18 at 00:03 +0000, Kees Cook wrote:
> This is actually two bugs, the one you've described is causing the exit,
> and the exit is causing the segfault (bug 90710). Did the patch in the
> above URL get into the 0.20-fixes subversion tree?
>

The Segfault of the frontend does not happen every time the backend
exits like this.

I saw in Mythtv SVN that it was fixed. I do not know about the
0.20-fixes (is that a separate release? Where do I find it?). Have not
tested SVN yet though.

I tried switching the order of things in the database (remote card was
listed with ID 1). But that did not help. Both cards have a VideoSource
assigned.

Sorry that I cannot be of more help.

Philippe

Revision history for this message
Philippe (philippepiatkiewitz) wrote :

The Segfault of the frontend does not happen every time the backend
exits like this.

I saw in Mythtv SVN that it was fixed. I do not know about the
0.20-fixes (is that a separate release? Where do I find it?). Have not
tested SVN yet though.

I tried switching the order of things in the database (remote card was
listed with ID 1). But that did not help. Both cards have a VideoSource
assigned.

Sorry that I cannot be of more help.

Philippe

Revision history for this message
Philippe (philippepiatkiewitz) wrote :

Sorry that I posted the last reply twice, I did not trust that replying to an email posted the message on this page.

Anyhow: in the mean time I have checked 0.20-fixes, which is a branch in SVN obviously. And NO, the bug is not yet fixed in 0.20-fixed.

Revision history for this message
Kees Cook (kees) wrote :

I've pulled this patch in for the latest update. Thanks!

Changed in mythtv:
assignee: nobody → keescook
status: Unconfirmed → Fix Committed
Revision history for this message
Kees Cook (kees) wrote :

Fix published in 0.20-svn20070122-0.0ubuntu3.

Changed in mythtv:
status: Fix Committed → Fix Released
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