mythfrontend.real crashed with SIGSEGV in DecoderBase::DoFastForwardSeek()

[Luke Morrison]

I was watching liveTV and then paused it. After continuing to watch, I tried to Fast Forward and at that point it stopped responding and crashed the front end.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: mythtv-frontend 2:0.28.0~master.20141115.13de778-0ubuntu0mythbuntu1 [origin: LP-PPA-mythbuntu-0.28]
ProcVersionSignature: Ubuntu 3.13.0-39.66~precise1-generic 3.13.11.8
Uname: Linux 3.13.0-39-generic x86_64
NonfreeKernelModules: nvidia
.var.log.mythtv.mythavtest.log:

.var.log.mythtv.mythccextractor.log:

.var.log.mythtv.mythjobqueue.log:

.var.log.mythtv.mythlcdserver.log:

.var.log.mythtv.mythmediaserver.log:

.var.log.mythtv.mythshutdown.log:

.var.log.mythtv.mythutil.log:

.var.log.mythtv.mythwelcome.log:

ApportVersion: 2.0.1-0ubuntu17.8
Architecture: amd64
CrashCounter: 1
CrashDB: mythbuntu
Date: Sat Nov 15 14:25:14 2014
ExecutablePath: /usr/bin/mythfrontend.real
InstallationMedia: Mythbuntu 12.04 "Precise Pangolin" - Release amd64 (20120425)
Installed_mythtv_dbg: 2:0.28.0~master.20141115.13de778-0ubuntu0mythbuntu1
MarkForUpload: True
ProcCmdline: /usr/bin/mythfrontend.real --syslog local7
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7ffa5b65036f <DecoderBase::DoFastForwardSeek(long long, bool&)+413>: mov (%rax),%rdx
 PC (0x7ffa5b65036f) ok
 source "(%rax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rdx" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: mythtv
StacktraceTop:
 DecoderBase::DoFastForwardSeek (this=0x576f250, desiredFrame=0, needflush=@0x7ff9f27fbadc: true) at decoderbase.cpp:866
 AvFormatDecoder::DoFastForwardSeek (this=0x576f250, desiredFrame=0, needflush=@0x7ff9f27fbadc: true) at avformatdecoder.cpp:2586
 DecoderBase::DoFastForward (this=0x576f250, desiredFrame=0, discardFrames=true) at decoderbase.cpp:787
 AvFormatDecoder::DoFastForward (this=0x576f250, desiredFrame=90406, discardFrames=true) at avformatdecoder.cpp:648
 MythPlayer::DecoderLoop (this=0x549f660, pause=true) at mythplayer.cpp:3335
Title: mythfrontend.real crashed with SIGSEGV in DecoderBase::DoFastForwardSeek()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin mythtv plugdev sambashare sudo video
XsessionErrors:
 (xfce4-settings-helper:2512): xfce4-settings-helper-WARNING **: Failed to get the _NET_NUMBER_OF_DESKTOPS property.
 (polkit-gnome-authentication-agent-1:2503): GLib-CRITICAL **: g_variant_new_string: assertion `string != NULL' failed
 (polkit-gnome-authentication-agent-1:2503): polkit-gnome-1-WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files