[mythtv-users] backend segfault when re-entering livetv - fixes/0.28 with IPTV tuners

[Mark Perkins]

> -----Original Message-----
> From: mythtv-users [mailto:mythtv-users-bounces at mythtv.org] On Behalf
> Of Mike Bibbings
> Sent: Wednesday, 30 November 2016 1:22 AM
> To: Discussion about MythTV <mythtv-users at mythtv.org>
> Subject: Re: [mythtv-users] backend segfault when re-entering livetv -
> fixes/0.28 with IPTV tuners
> 
> On 29/11/16 14:04, Mark Perkins wrote:
> > Hi all.
> >
> > I am building a new fixes/0.28 backend. I am testing using IPTV tuners.
> > However I am getting a backend segfault if I exit and then re-enter
livetv.
> > It doesn't seem to happen while channel surfing. It also doesn't seem
> > to happen when I exit livetv (or enter the first time), but occurs as
> > soon as I try to return to livetv.
> >
> > I even tried starting, going to livetv, exiting livetv, watching a
> > recording, exiting recording, going back into livetv and still pulled
> > a segfault as soon as I tried to get into livetv the second time.
> >
> > I have run a gdb dump and have attached it here
> > https://www.dropbox.com/s/ynmtlwpven2lkfs/gdb.txt?dl=0
> >
> > If anyone has any suggestions please let me know.
> >
> > Mythbackend version as follows:
> > Please attach all output as a file in bug reports.
> > MythTV Version : v0.28-97-ge9d0543
> > MythTV Branch : fixes/0.28
> > Network Protocol : 88
> > Library API : 0.28.20161120-1
> > QT Version : 5.6.1
> > Options compiled in:
> >   linux profile use_hidesyms using_alsa using_oss using_pulse
> > using_pulseoutput using_backend using_bindings_perl
> > using_bindings_python using_bindings_php using_dvb using_frontend
> > using_hdhomerun using_vbox using_ceton using_hdpvr using_ivtv
> > using_joystick_menu using_libcrypto using_libdns_sd using_libfftw3
> > using_libxml2 using_lirc using_mheg using_opengl using_opengl_video
> > using_opengl_themepainter using_qtwebkit using_qtscript using_qtdbus
> > using_sdl using_taglib using_v4l2 using_x11 using_xrandr using_xv
> > using_profiletype using_systemd_notify using_bindings_perl
> > using_bindings_python using_bindings_php using_freetype2
> > using_mythtranscode using_opengl using_vdpau using_ffmpeg_threads
> > using_mheg using_libass using_libxml2
> > _______________________________________________
> 
> Which IPTV tuner(s) are you using ?
> 
> I know of two mythtv trac tickets #12856 and #12773 (comment 10) - both
> cause mythbackend seg faults in recorders/httptsstreamhandler.cpp:217 in
> the circumstances you describe when using VBOX IPTV tuners. At present you
> will need to patch the source, see the trac tickets for details. If you
are using
> HLS Playlists that is going to be a problem as one of the patches #12856
> breaks those (temporary fix awaiting proper resolution).
> 
> Mike
> 
> 
> _______________________________________________
Thanks Mike. I am using mumudvb to http unicast the dvb-t streams. I will
check out the two trac tickets and report back what I find.