[mythtv-commits] Ticket #9412: Channel History and FE Control Socket - segfault on scripted "h"/back

[MythTV]

#9412: Channel History and FE Control Socket - segfault on scripted "h"/back
-------------------------------------------+----------------------------
 Reporter:  daver@…                        |          Owner:  janne
     Type:  Bug Report                     |         Status:  new
 Priority:  minor                          |      Milestone:  unknown
Component:  MythTV - Video Playback        |        Version:  0.24-fixes
 Severity:  medium                         |     Resolution:
 Keywords:  segfault livetv controlsocket  |  Ticket locked:  0
-------------------------------------------+----------------------------
Changes (by wagnerrp):

 * keywords:  segfault previous channel livetv telnet => segfault livetv
     controlsocket
 * owner:   => janne
 * component:  MythTV - General => MythTV - Video Playback


Old description:

> Was playing with "h" Channel History command and the Frontend Control
> Socket http://www.mythtv.org/wiki/Frontend_control_socket
>
> mythfrontend --version
> xprop:  unable to open display ''
> Please attach all output as a file in bug reports.
> MythTV Version   : df2c95b
> MythTV Branch    : fixes/0.24
> Network Protocol : 63
> Library API      : 0.24.20101129-1
> QT Version       : 4.7.0
> Options compiled in:
>  linux debug using_alsa using_jack using_oss using_pulse
> using_pulseoutput using_backend using_bindings_perl using_bindings_python
> using_dvb using_firewire using_frontend using_hdhomerun using_hdpvr
> using_iptv using_ivtv using_joystick_menu using_lirc using_mheg
> using_opengl_video using_opengl_vsync using_qtdbus using_qtwebkit
> using_v4l using_x11 using_xrandr using_xv using_bindings_perl
> using_bindings_python using_mythtranscode using_opengl using_vdpau
> using_ffmpeg_threads using_live using_mheg
>
> For testing purposes, I start the FE this way:
> DISPLAY=:0 /usr/bin/mythfrontend --service &
> --------------------------------
> This case operates reliably:
>
> Enter LiveTV
> Tune 3-4 channels
> Use wired keyboard letter "h" to go back in channel history
> (I can repeat this several times, no crash)
> --------------------------------
> This case segfaults...:
>
> Enter liveTV
> tune 3-4 channels
> Use command line "nc localhost 6546 < mythcmd"
> -- where 'mythcmd' contains only text "key h" (no quotes in file)
>
> After 1-2 calls from the command line (call script, wait for channel to
> tune, call script), the FE crashes.
> No errors produced in FE logs, even with -v channel,socket
>

> [1]+  Segmentation fault      DISPLAY=:0 /usr/bin/mythfrontend -v
> channel,socket
> ------------------------------------
>

> I'm sure I need to tell you more, do I need to take this to the bug
> reporting tool or am I trying to make something work in the wrong way?

New description:

 Was playing with "h" Channel History command and the Frontend Control
 Socket http://www.mythtv.org/wiki/Frontend_control_socket

 For testing purposes, I start the FE this way:
 DISPLAY=:0 /usr/bin/mythfrontend --service &
 --------------------------------
 This case operates reliably:

 Enter LiveTV
 Tune 3-4 channels
 Use wired keyboard letter "h" to go back in channel history
 (I can repeat this several times, no crash)
 --------------------------------
 This case segfaults...:

 Enter liveTV
 tune 3-4 channels
 Use command line "nc localhost 6546 < mythcmd"
 -- where 'mythcmd' contains only text "key h" (no quotes in file)

 After 1-2 calls from the command line (call script, wait for channel to
 tune, call script), the FE crashes.
 No errors produced in FE logs, even with -v channel,socket


 [1]+  Segmentation fault      DISPLAY=:0 /usr/bin/mythfrontend -v
 channel,socket
 ------------------------------------


 I'm sure I need to tell you more, do I need to take this to the bug
 reporting tool or am I trying to make something work in the wrong way?

--

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Ticket URL: <http://code.mythtv.org/trac/ticket/9412#comment:1>
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