[Matroska-users] Mkclean sigsev on a specific file

Steve Lhomme slhomme at matroska.org
Fri Jul 16 16:33:49 CEST 2010


OK that all looks correct. Can you cut the first 1 or 2 first MB of the file
and send them to me ?

On Fri, Jul 16, 2010 at 4:30 PM, julroy67 <julroy67 at gmail.com> wrote:

> Yes, it plays fine (VLC and Mplayer at least). The mkvinfo simple
> output : http://julroy67.free.fr/DL/TGBS_4925_mkvinfo.txt
>
> 2010/7/16 Steve Lhomme <slhomme at matroska.org>:
> > OK it seems your file has no (found) Tracks. Does it play correctly ?
> It's
> > not normal for a file that big to have no Tracks (it's possible for files
> > with only chapters or attachments). And theoretically the code should
> exit
> > before the crash, as there is a check to see if there are Cluster but no
> > matching Tracks. So I don't know how you are getting to that point.
> > Can you send me the output of mkvinfo on that file ? You can use pastebin
> or
> > that same web server you used.
> > Thanks,
> > Steve
> >
> > On Fri, Jul 16, 2010 at 3:50 PM, julroy67 <julroy67 at gmail.com> wrote:
> >>
> >> Here is the nice full output :
> >> http://julroy67.free.fr/DL/mkclean_full_backtrace.log
> >>
> >> Sending the file can be made, but they all are over 1 Gb, the smallest
> >> is 1.2 Gb and would take a long time to upload if so.
> >>
> >> 2010/7/16 Steve Lhomme <slhomme at matroska.org>:
> >> > Can you get a bigger backtrace, up to the main() if possible ? Is it
> >> > possible to get one of the files that crash (the smallest) ?
> >> >
> >> > On Fri, Jul 16, 2010 at 3:26 PM, julroy67 <julroy67 at gmail.com> wrote:
> >> >>
> >> >> So, better, than before. The first version, with a clean build,
> >> >> crashes like the arch package, same output. And now for the debug
> >> >> version, the real output (I have missed up something in the other
> >> >> version, that crashed at startup) :
> >> >>
> >> >> 15:23 julroy67 at momoko-laptop ~/Apps/mkclean/mkclean-0.4.1% gdb
> >> >> release/gcc_linux_x64_debug/mkclean
> >> >> GNU gdb (GDB) 7.1
> >> >> Copyright (C) 2010 Free Software Foundation, Inc.
> >> >> License GPLv3+: GNU GPL version 3 or later
> >> >> <http://gnu.org/licenses/gpl.html>
> >> >> This is free software: you are free to change and redistribute it.
> >> >> There is NO WARRANTY, to the extent permitted by law.  Type "show
> >> >> copying"
> >> >> and "show warranty" for details.
> >> >> This GDB was configured as "x86_64-unknown-linux-gnu".
> >> >> For bug reporting instructions, please see:
> >> >> <http://www.gnu.org/software/gdb/bugs/>...
> >> >> Reading symbols from
> >> >>
> >> >>
> >> >>
> /home/julroy67/Apps/mkclean/mkclean-0.4.1/release/gcc_linux_x64_debug/mkclean...done.
> >> >> (gdb) run --optimize --remux Test.mkv Test.mkv.2
> >> >> Starting program:
> >> >>
> >> >>
> >> >>
> /home/julroy67/Apps/mkclean/mkclean-0.4.1/release/gcc_linux_x64_debug/mkclean
> >> >> --optimize --remux Test.mkv Test.mkv.2
> >> >> [Thread debugging using libthread_db enabled]
> >> >> Progress 1/3: 100%
> >> >>
> >> >> Program received signal SIGSEGV, Segmentation fault.
> >> >> 0x000000000042b4af in EBML_MasterFindFirstElt (Element=0x0,
> >> >> Context=0x656ce0, bCreateIfNull=0, SetDefault=0) at ebmlmaster.c:46
> >> >> 46          for
> (i=EBML_MasterChildren(Element);i;i=EBML_MasterNext(i))
> >> >>
> >> >> This one is the good, I think.
> >> >>
> >> >> 2010/7/16 Steve Lhomme <slhomme at matroska.org>:
> >> >> > Before starting to debug you should try to build it first like I
> just
> >> >> > described you. Using the available source package
> >> >> > here:
> http://dl.matroska.org/downloads/mkclean/mkclean-0.4.1.tar.bz2
> >> >> > I don't know about archlinux and how you got that package and who
> >> >> > made
> >> >> > it.
> >> >> > So I don't know what it contains and if it's correct. mkclean
> doesn't
> >> >> > use
> >> >> > the usual autoconf/automake system found on Linux, so maybe it was
> >> >> > packaged
> >> >> > incorrectly.
> >> >> > If you manage to build it like I said and it still fails, you can
> try
> >> >> > to
> >> >> > rebuild it with debug informations like this:
> >> >> > ./coremake distclean
> >> >> > ./coremake gcc_linux_x64_debug
> >> >> >
> >> >> > Steve
> >> >> > On Fri, Jul 16, 2010 at 3:05 PM, julroy67 <julroy67 at gmail.com>
> wrote:
> >> >> >>
> >> >> >> Mhh I don't know if I'm correctly generating the debug version of
> >> >> >> mkclean, could you say me step by step how to it. To be clear, I'm
> >> >> >> using archlinux, and archlinux AUR package of mkclean, it works
> for
> >> >> >> most of the file, but for at least 2 of them, it crashes as this :
> >> >> >>
> >> >> >> 14:59 julroy67 at momoko-laptop ~% mkclean --optimize --remux
> Test.mkv
> >> >> >> Test.mkv.2
> >> >> >> Progress 1/3: 100%
> >> >> >> zsh: segmentation fault  mkclean --optimize --remux Test.mkv
> >> >> >> Test.mkv.2
> >> >> >>
> >> >> >> And it seems that the debug binary that I've generated crashes
> >> >> >> always,
> >> >> >> so I'm doing wrong, but still, mkclean has a error somewhere ^^'
> So
> >> >> >> to
> >> >> >> be sure to do correctly, I think, a step by step debugging guide
> >> >> >> would
> >> >> >> help. Sorry for the hassle.
> >> >> >>
> >> >> >> 2010/7/16 Steve Lhomme <slhomme at matroska.org>:
> >> >> >> > Hi.
> >> >> >> > Given the nature of the crash, it looks like it should always
> >> >> >> > crash
> >> >> >> > as
> >> >> >> > that
> >> >> >> > error is on the init. It may have to do with linux x64 rather
> than
> >> >> >> > 32
> >> >> >> > bits.
> >> >> >> > I'll give it a try on my side.
> >> >> >> > Or did you compile it with a 32 bits tool chain ? The regular
> >> >> >> > bootstrap.sh
> >> >> >> > and subsequent "make" command are building for 32 bits. In 0.4.2
> >> >> >> > that
> >> >> >> > should
> >> >> >> > be released soon I changed that and there is now a "configure"
> >> >> >> > script.
> >> >> >> > It
> >> >> >> > will build the makefiles for 64 bits architecture on 64 bits
> >> >> >> > ones...
> >> >> >> > Meanwhile you can make sure or that by running that in the root
> >> >> >> > folder
> >> >> >> > of
> >> >> >> > the sources:
> >> >> >> > ./coremake distclean
> >> >> >> > ./coremake gcc_linux_x64
> >> >> >> > Then you run "make -C mkclean" and it should work.
> >> >> >> >
> >> >> >> > On Fri, Jul 16, 2010 at 2:41 PM, julroy67 <julroy67 at gmail.com>
> >> >> >> > wrote:
> >> >> >> >>
> >> >> >> >> Hello,
> >> >> >> >>
> >> >> >> >> I'm using mkclean to clean up my mkv files that are for the
> most
> >> >> >> >> not
> >> >> >> >> valid as mkvalidate says, but on certain files, mkclean
> crashes.
> >> >> >> >> I've
> >> >> >> >> managed to get the backtrace from gdb. But I'm not sure where I
> >> >> >> >> have
> >> >> >> >> to report the issue.
> >> >> >> >>
> >> >> >> >> For the backtrace here's it :
> >> >> >> >>
> >> >> >> >> 14:30 julroy67 at momoko-laptop ~/Apps/mkclean/src/mkclean-0.4.1%
> >> >> >> >> gdb
> >> >> >> >> release/gcc_linux_x64/mkclean
> >> >> >> >> GNU gdb (GDB) 7.1
> >> >> >> >> Copyright (C) 2010 Free Software Foundation, Inc.
> >> >> >> >> License GPLv3+: GNU GPL version 3 or later
> >> >> >> >> <http://gnu.org/licenses/gpl.html>
> >> >> >> >> This is free software: you are free to change and redistribute
> >> >> >> >> it.
> >> >> >> >> There is NO WARRANTY, to the extent permitted by law.  Type
> "show
> >> >> >> >> copying"
> >> >> >> >> and "show warranty" for details.
> >> >> >> >> This GDB was configured as "x86_64-unknown-linux-gnu".
> >> >> >> >> For bug reporting instructions, please see:
> >> >> >> >> <http://www.gnu.org/software/gdb/bugs/>...
> >> >> >> >> Reading symbols from
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> /home/julroy67/Apps/mkclean/src/mkclean-0.4.1/release/gcc_linux_x64/mkclean...done.
> >> >> >> >> (gdb) run --optimize --remux Test.mkv Test.mkv.2
> >> >> >> >> Starting program:
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> /home/julroy67/Apps/mkclean/src/mkclean-0.4.1/release/gcc_linux_x64/mkclean
> >> >> >> >> --optimize --remux Test.mkv Test.mkv.2
> >> >> >> >> [Thread debugging using libthread_db enabled]
> >> >> >> >>
> >> >> >> >> Program received signal SIGSEGV, Segmentation fault.
> >> >> >> >> 0x000000000040180e in ProjectSettings (p=0x7fffffffdc10) at
> >> >> >> >> mkclean_stdafx.c:99
> >> >> >> >> 99
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
> >> >> >> >>
>  Node_SetData((node*)p,NODECONTEXT_PROJECT_NAME,TYPE_STRING,PROJECT_NAME);
> >> >> >> >>
> >> >> >> >> or see here :
> >> >> >> >> http://julroy67.free.fr/DL/mkclean_crash_backtrace.log
> >> >> >> >>
> >> >> >> >> So anyone can say what I've to do ?
> >> >> >> >>
> >> >> >> >> Thanks.
> >> >> >> >> _______________________________________________
> >> >> >> >> Matroska-users mailing list
> >> >> >> >> Matroska-users at lists.matroska.org
> >> >> >> >>
> http://lists.matroska.org/cgi-bin/mailman/listinfo/matroska-users
> >> >> >> >> Read Matroska-Users on GMane:
> >> >> >> >> http://dir.gmane.org/gmane.comp.multimedia.matroska.user
> >> >> >> >
> >> >> >> >
> >> >> >> > _______________________________________________
> >> >> >> > Matroska-users mailing list
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> >> >> >> >
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> >> >> >> >
> >> >> >> >
> >> >> >> _______________________________________________
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> >> >> >
> >> >> >
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> >> >> >
> >> >> >
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> >> >
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> >> >
> >> >
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> >
> >
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> >
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