Mythbuntu

mythfrontend.real crashed with SIGSEGV in mpegts_push_section()

Bug #1040702 reported by Stephen Robertson on 2012-08-23

This bug affects 4 people

Affects		Status	Importance	Assigned to	Milestone
	MythTV	Fix Released	Unknown	auto-code.mythtv.org-1 #11029
	Mythbuntu	Expired	Undecided	Unassigned

Bug Description

Frontend Crash on attempting playback.

Apologies for the duplicate bugs, seem to be having problems generating trace info.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: mythtv-frontend 2:0.26.0~master.20120822.2ba42aa-0ubuntu0mythbuntu2 [origin: LP-PPA-mythbuntu-0.26]
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic-pae 3.2.24
Uname: Linux 3.2.0-29-generic-pae i686
NonfreeKernelModules: 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.mythmessage.log:

.var.log.mythtv.mythshutdown.log:

.var.log.mythtv.mythutil.log:

.var.log.mythtv.mythwelcome.log:

ApportVersion: 2.0.1-0ubuntu12
Architecture: i386
CrashDB: mythbuntu
Date: Thu Aug 23 15:50:11 2012
ExecutablePath: /usr/bin/mythfrontend.real
Installed_mythtv_dbg: 2:0.26.0~master.20120822.2ba42aa-0ubuntu0mythbuntu2
ProcCmdline: /usr/bin/mythfrontend.real --syslog local7
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
SegvAnalysis:
Segfault happened at: 0xb5072e97 <mpegts_push_section+103>: movzbl 0x1(%edx),%eax
PC (0xb5072e97) ok
source "0x1(%edx)" (0xb42cb41e) in non-readable VMA region: 0xb42cb000-0xb42cc000 ---p /usr/lib/libmythavutil.so.51.56.100
destination "%eax" ok
SegvReason: reading VMA /usr/lib/libmythavutil.so.51.56.100
Signal: 11
SourcePackage: mythtv
StacktraceTop:
mpegts_push_section (filter=0xa368b40, section=0xab8ec80 ";\260m", section_len=112) at libavformat/mpegts-mythtv.c:689
write_section_data (s=0xb2f3f60, tss1=0xa368b40, buf=0xbfeb7745 ";\260m", buf_size=183, is_start=1) at libavformat/mpegts-mythtv.c:401
handle_packet (ts=0xb71cea0, packet=0x1e18c028 <Address 0x1e18c028 out of bounds>) at libavformat/mpegts-mythtv.c:2535
handle_packets (ts=0xb71cea0, nb_packets=0) at libavformat/mpegts-mythtv.c:2643
mpegts_read_packet (s=0xb2f3f60, pkt=0xbfeb792c) at libavformat/mpegts-mythtv.c:2951
Title: mythfrontend.real crashed with SIGSEGV in mpegts_push_section()
UpgradeStatus: Upgraded to precise on 2012-08-13 (10 days ago)
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin mythtv plugdev sambashare vboxusers video

Tags:

Revision history for this message

Stephen Robertson (stephengrobertson) wrote on 2012-08-23:

.var.log.mythtv.jamu.log.txt Edit (7.1 MiB, text/plain; charset="utf-8")
.var.log.mythtv.mythbackend.log.txt Edit (4.0 MiB, text/plain; charset="utf-8")
.var.log.mythtv.mythcommflag.log.txt Edit (30.0 KiB, text/plain; charset="utf-8")
.var.log.mythtv.mythexport.log.txt Edit (69.6 MiB, text/plain; charset="utf-8")
.var.log.mythtv.mythfrontend.log.txt Edit (2.1 MiB, text/plain; charset="utf-8")
.var.log.mythtv.mythmetadatalookup.log.txt Edit (9.6 MiB, text/plain; charset="utf-8")
.var.log.mythtv.mythpreviewgen.log.txt Edit (1.2 MiB, text/plain; charset="utf-8")
.var.log.mythtv.mythtranscode.log.txt Edit (36.0 KiB, text/plain; charset="utf-8")
.var.log.mythtv.mythtv.setup.log.txt Edit (177.3 KiB, text/plain; charset="utf-8")
CoreDump.gz Edit (62.0 MiB, application/x-gzip)
Dependencies.txt Edit (9.2 KiB, text/plain; charset="utf-8")
Disassembly.txt Edit (1022 bytes, text/plain; charset="utf-8")
MythTVDirectoryPermissions.txt Edit (746 bytes, text/plain; charset="utf-8")
ProcMaps.txt Edit (75.0 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (834 bytes, text/plain; charset="utf-8")
Registers.txt Edit (493 bytes, text/plain; charset="utf-8")
Stacktrace.txt Edit (26.5 KiB, text/plain; charset="utf-8")
ThreadStacktrace.txt Edit (1021 bytes, text/plain; charset="utf-8")

visibility:

private → public

Revision history for this message

Douglas Mackay (o-launchpad-mackayd-co-uk) wrote on 2012-08-23:

Seeing this as well. In UK using Freesat and Freeview.

It happened in 0.25 but seems much more regular in 0.26 beta.

Douglas Mackay (o-launchpad-mackayd-co-uk) on 2012-08-25

visibility:

public → private

Douglas Mackay (o-launchpad-mackayd-co-uk) on 2012-08-25

visibility:

private → public

Revision history for this message

Stephen Robertson (stephengrobertson) wrote on 2012-08-28:

Logged on mythtv trac

http://code.mythtv.org/trac/ticket/11029

Bug Watch Updater (bug-watch-updater) on 2012-08-29

Changed in mythtv:
status:	Unknown → New

Bug Watch Updater (bug-watch-updater) on 2012-09-04

Changed in mythtv:
status:	New → Fix Released

Revision history for this message

Thomas Mashos (tgm4883) wrote on 2015-01-10:

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.