[mythtv-commits] Ticket #8235: segfault when channel changed in LiveTV

MythTV mythtv at cvs.mythtv.org
Mon May 17 13:30:32 UTC 2010

#8235: segfault when channel changed in LiveTV
 Reporter:  warpme@…          |        Owner:  ijr    
     Type:  defect            |       Status:  new    
 Priority:  critical          |    Milestone:  unknown
Component:  MythTV - General  |      Version:  head   
 Severity:  high              |   Resolution:         
  Mlocked:  0                 |  
Changes (by warpme@…):

  * status:  closed => new
  * resolution:  invalid =>


 Replying to [comment:4 robertm]:
 > No response.  Original backtrace was a SIGINT, not a segfault.  If this
 occurs with .23-RC3 or .23-fixes, this ticket can be re-opened with a
 backtrace that shows an actual segfault.


 Sorry for long silence (I was blocked by other things). This seq fault
 issue is quite specific:[[BR]]

 -it is only present on my DVB-T channels (I have also: analog and
 DVB-S/DVB-S2). My DVB-T is H.264 based.[[BR]]

 -segfault pops after channel change - when decoder is adapting to new
 stream. Sequence is more-less following:[[BR]]

 1.current channel plays[[BR]]

 2.user changing channel[[BR]]

 3.picture on current channel stops moving[[BR]]

 4.picture from new channel appears (it is still)[[BR]]

 5.2-3 sec latter segfault appears[[BR]]

 6.immediately after p.5 picture starts to move[[BR]]

 -segfault appears only when I change from DVB-T channel to DVB-T channel.
 Changing from/to other channels to DVB-T is not producing segfault.[[BR]]

 7.attached by me gdb traces were with this segfault - despite they didn't
 include any infos about segfault. Will compilation/tracing with -debug
 option help then here ?[[BR]]

 I'm on 0.23-fixes 24609


Ticket URL: <http://svn.mythtv.org/trac/ticket/8235#comment:5>
MythTV <http://www.mythtv.org/>

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