[mythtv-commits] Ticket #12369: WebFrontend causes backend segfault

[MythTV]

#12369: WebFrontend causes backend segfault
-----------------------------------+-----------------------------
 Reporter:  warpme@…               |          Owner:  stuartm
     Type:  Bug Report - General   |         Status:  new
 Priority:  minor                  |      Milestone:  unknown
Component:  MythTV - Web Frontend  |        Version:  Master Head
 Severity:  medium                 |     Resolution:
 Keywords:  webfrontend            |  Ticket locked:  0
-----------------------------------+-----------------------------

Comment (by warpme@…):

 It was TV/Recording Rules/Edit Recording Rule.
 Unfortunately segfault was only once.
 On next attempts I wasn't able to reproduce it.
 I'm on Qt4.8.1. OS is Archlinux.
 I'll upgrade Qt to 4.8.6 and build it with debug symbols.
 Here is last 5 min BE log before segfault.


 {{{
 -- Logs begin at Fri 2015-01-30 10:26:50 CET, end at Sat 2015-02-07
 23:04:17 CET. --
 Feb 07 22:59:30 mythtv mythbackend[17457]: 2015-02-07 22:59:30.116159 I
 TVRec[14]: ASK_RECORDING 14 29 0 0
 Feb 07 22:59:30 mythtv mythbackend[17457]: 2015-02-07 22:59:30.514276 I
 TVRec[13]: ASK_RECORDING 13 29 0 0
 Feb 07 22:59:30 mythtv mythbackend[17457]: 2015-02-07 22:59:30.564049 I
 TVRec[16]: ASK_RECORDING 16 29 0 0
 Feb 07 22:59:31 mythtv mythbackend[17457]: 2015-02-07 22:59:30.966938 I
 TVRec[15]: ASK_RECORDING 15 29 0 0
 Feb 07 22:59:44 mythtv mythbackend[17457]: 2015-02-07 22:59:44.777941 N
 AutoExpire: CalcParams(): Max required Free Space: 17.0 GB w/freq: 4 min
 Feb 07 23:00:00 mythtv mythbackend[17457]: 2015-02-07 23:00:00.230030 I
 New DB connection, total: 25
 Feb 07 23:00:00 mythtv mythbackend[17457]: 2015-02-07 23:00:00.232104 E
 ProgramInfo(): Failed to find recorded entry for 0.
 Feb 07 23:00:00 mythtv mythbackend[17457]: 2015-02-07 23:00:00.602700 N
 AutoExpire: CalcParams(): Max required Free Space: 17.0 GB w/freq: 4 min
 Feb 07 23:00:00 mythtv mythbackend[17457]: 2015-02-07 23:00:00.694577 N
 ApplyRecordRecGroupChange: LiveTV to LiveTV (2)
 Feb 07 23:00:00 mythtv mythbackend[17457]: 2015-02-07 23:00:00.883004 N
 Finished Recording: Video Codec: h264 (1920x1088 A/R: 3 25fps) Audio
 Codec: mp2
 Feb 07 23:00:00 mythtv mythbackend[17457]: 2015-02-07 23:00:00.883660 I
 TVRec[18]: RingBufferChanged()
 Feb 07 23:00:06 mythtv mythbackend[17457]: 2015-02-07 23:00:06.230599 I
 TVRec[13]: Changing from None to RecordingOnly
 Feb 07 23:00:06 mythtv mythbackend[17457]: 2015-02-07 23:00:06.235354 I
 TVRec[13]: HW Tuner: 13->13
 Feb 07 23:00:07 mythtv mythbackend[17457]: 2015-02-07 23:00:07.859779 I
 SCR: Tuning to 11393000kHz, LoBand, V using UB=2, FREQ=1680MHz, POS=A
 Feb 07 23:00:08 mythtv mythbackend[17457]: 2015-02-07 23:00:08.333366 I
 MainServer: MainServer::HandleAnnounce FileTransfer
 Feb 07 23:00:08 mythtv mythbackend[17457]: 2015-02-07 23:00:08.333372 I
 MainServer: adding: fe-amde2100 as a remote file transfer
 Feb 07 23:00:08 mythtv mythbackend[17457]: 2015-02-07 23:00:08.615347 I
 TVRec[13]: Starting Signal Monitor
 Feb 07 23:00:08 mythtv mythbackend[17457]: 2015-02-07 23:00:08.644612 I
 TVRec[13]: TuningSignalCheck: Still waiting.  Will timeout @ 00:00:00.000
 Feb 07 23:00:08 mythtv mythbackend[17457]: 2015-02-07 23:00:08.651330 N
 AutoExpire: CalcParams(): Max required Free Space: 17.0 GB w/freq: 3 min
 Feb 07 23:00:08 mythtv mythbackend[17457]: 2015-02-07 23:00:08.655933 I
 DVBSigMon[13](/dev/dvb/adapter7/frontend0): Signal Locked
 Feb 07 23:00:08 mythtv mythbackend[17457]: [127B blob data]
 Feb 07 23:00:09 mythtv mythbackend[17457]: 2015-02-07 23:00:08.967929 I
 TVRec[13]: TuningSignalCheck: Good signal
 Feb 07 23:00:09 mythtv mythbackend[17457]: [127B blob data]
 Feb 07 23:00:09 mythtv mythbackend[17457]: 2015-02-07 23:00:09.221366 I
 TVRec[13]: rec->GetPathname(): '/myth/tv/8003_20150207220000.mpg'
 Feb 07 23:00:09 mythtv mythbackend[17457]: [160B blob data]
 Feb 07 23:03:55 mythtv mythbackend[17457]: 2015-02-07 23:03:55.481319 C
 Received Segmentation fault: Code 1, PID -1440751568, UID 32523, Value
 0x7f0c9463d200
 }}}

--
Ticket URL: <https://code.mythtv.org/trac/ticket/12369#comment:2>
MythTV <http://www.mythtv.org>
MythTV Media Center