[Matroska-users] Mkclean sigsev on a specific file

julroy67 julroy67 at gmail.com
Fri Jul 16 16:30:39 CEST 2010


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.
>> >> >> >> _______________________________________________
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>> >> >> >
>> >> >> >
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