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[Bug 1063530] Re: mythcommflag crashed with SIGSEGV in ff_h264_pred_direct_motion()

 

We really do appreciate you opening this ticket to help improve
Mythbuntu, but it needs to be closed for a number of reasons. The
biggest one is that upstream has moved on to a new version and believes
this to be fixed. Could you please verify if this issue still exists in
the latest version?

Please do not let the closing of this ticket dissuade you from opening a
new ticket if this (or any other) problem occurs with the newer
versions.

** Changed in: mythbuntu
       Status: New => Expired

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https://bugs.launchpad.net/bugs/1063530

Title:
  mythcommflag crashed with SIGSEGV in ff_h264_pred_direct_motion()

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  Expired

Bug description:
  mythcommflag was processing a DVB-T SD recording of "Carter Can" from
  ChoiceTV in the usual New Zealand format.  I have recorded many
  episodes of this program before on Mythbunt 11.04 with MythTV
  0.24+fixes, but I upgraded to Mythbuntu 12.04 with MythTV 0.25+fixes a
  few days ago and I have only recorded one or two of "Carter Can" since
  then.

  Here is the MediaInfo report on the file:

  General
  ID                                       : 33 (0x21)
  Complete name                            : 1012_20121008152900.mpg
  Format                                   : MPEG-TS
  File size                                : 711 MiB
  Duration                                 : 34mn 58s
  Overall bit rate mode                    : Variable
  Overall bit rate                         : 2 841 Kbps

  Video
  ID                                       : 556 (0x22C)
  Menu ID                                  : 1 (0x1)
  Format                                   : AVC
  Format/Info                              : Advanced Video Codec
  Format version                           : Version 2
  Format profile                           : Main@L3.0
  Format settings, CABAC                   : Yes
  Format settings, ReFrames                : 4 frames
  Format settings, GOP                     : M=4, N=24
  Codec ID                                 : 27
  Duration                                 : 34mn 56s
  Maximum bit rate                         : 3 280 Kbps
  Width                                    : 720 pixels
  Height                                   : 576 pixels
  Display aspect ratio                     : 16:9
  Frame rate                               : 25.000 fps
  Standard                                 : PAL
  Color space                              : YUV
  Chroma subsampling                       : 4:2:0
  Bit depth                                : 8 bits
  Scan type                                : Interlaced
  Scan order                               : Top Field First
  Color primaries                          : BT.470-6 System B, BT.470-6 System G, BT.601-6 625, BT.1358 625, BT.1700 625 PAL, BT.1700 625 SECAM
  Transfer characteristics                 : BT.470-6 System B, BT.470-6 System G
  Matrix coefficients                      : BT.470-6 System B, BT.470-6 System G, BT.601-6 625, BT.1358 625, BT.1700 625 PAL, BT.1700 625 SECAM, IEC 61966-2-4 601

  Audio
  ID                                       : 606 (0x25E)
  Menu ID                                  : 1 (0x1)
  Format                                   : AAC
  Format/Info                              : Advanced Audio Codec
  Format profile                           : HE-AAC / LC
  Muxing mode                              : LATM
  Codec ID                                 : 17
  Duration                                 : 34mn 58s
  Bit rate mode                            : Variable
  Minimum bit rate                         : 84.4 Kbps
  Maximum bit rate                         : 293 Kbps
  Channel(s)                               : 2 channels
  Channel positions                        : Front: L R
  Sampling rate                            : 48.0 KHz / 24.0 KHz
  Compression mode                         : Lossy
  Delay relative to video                  : -2s 782ms
  Language                                 : English

  Menu
  ID                                       : 206 (0xCE)
  Menu ID                                  : 1 (0x1)
  Duration                                 : 34mn 58s
  List                                     : 556 (0x22C) (AVC) / 606 (0x25E) (AAC, English) / 1004 (0x3EC) ()
  Language                                 :  / English
  Maximum bit rate                         : 3378000

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: mythtv-backend 2:0.25.2+fixes.20121002.139bd59-0ubuntu0mythbuntu4 [origin: LP-PPA-mythbuntu-0.25]
  ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
  Uname: Linux 3.2.0-31-generic x86_64
  NonfreeKernelModules: tbs5922fe nvidia
  .var.log.mythtv.mythavtest.log:
   
  .var.log.mythtv.mythccextractor.log:
   
  .var.log.mythtv.mythfilldatabase.log:
   
  .var.log.mythtv.mythjobqueue.log:
   
  .var.log.mythtv.mythlcdserver.log:
   
  .var.log.mythtv.mythmediaserver.log:
   
  .var.log.mythtv.mythshutdown.log:
   
  .var.log.mythtv.mythtranscode.log:
   
  .var.log.mythtv.mythutil.log:
   
  .var.log.mythtv.mythwelcome.log:
   
  ApportVersion: 2.0.1-0ubuntu13
  Architecture: amd64
  CrashDB: mythbuntu
  Date: Mon Oct  8 15:41:21 2012
  ExecutablePath: /usr/bin/mythcommflag
  InstallationMedia: Mythbuntu 12.04 "Precise Pangolin" - Release amd64 (20120425)
  Installed_mythtv_dbg: 0.0
  ProcCmdline: /usr/bin/mythcommflag -j 12800 --noprogress --verbose general --loglevel info --syslog local7
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   LANG=en_NZ.UTF-8
  SegvAnalysis:
   Segfault happened at: 0x7f0fa8552af5 <ff_h264_pred_direct_motion+7717>:	movzwl (%rsi),%r11d
   PC (0x7f0fa8552af5) ok
   source "(%rsi)" (0x7f0f6c324f60) in non-readable VMA region: 0x7f0f6c324000-0x7f0f70000000 ---p None
   destination "%r11d" ok
   Stack memory exhausted (SP below stack segment)
  SegvReason: reading VMA None
  Signal: 11
  SourcePackage: mythtv
  StacktraceTop:
   ff_h264_pred_direct_motion () from /usr/lib/libmythavcodec.so.52
   ?? () from /usr/lib/libmythavcodec.so.52
   ff_h264_decode_mb_cabac () from /usr/lib/libmythavcodec.so.52
   ?? () from /usr/lib/libmythavcodec.so.52
   ?? () from /usr/lib/libmythavcodec.so.52
  Title: mythcommflag crashed with SIGSEGV in ff_h264_pred_direct_motion()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: audio cdrom dialout video

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