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Message #12279
[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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