[mythtv-users] Mytharchive problems

[SpEnT]

On 7/3/06, Paul Harrison <mythtv at dsl.pipex.com> wrote:
> SpEnT wrote:
> > Paul,
> >
> > I'm running it as the same user (for me everything runs as root ...
> > local machine, local network). I do still get a seg fault running from
> > command line albeit with output even if I run it with no options I get
> > a segfault (just tested).
> >
> > Here's a couple things I've run to test:
> > # mytharchivehelper -p out
> > Segmentation fault (core dumped)
> > # cat out
> > localhost
> > mythtv
> > mythtv
> > mythconverg
> > myth.bangtherockstogether.prv
> > /usr/local
> >
> > # mytharchivehelper -i /mnt/store/1155_20060423220000.nuv test.xml 0
> > 2006-07-03 12:02:31.997 Opening /mnt/store/1155_20060423220000.nuv
> > [nuv @ 0x41e012e0]Could not find codec parameters (Video: mpeg4, 720x480)
> > [nuv @ 0x41e012e0]Could not find codec parameters (Video: mpeg4, 720x480)
> > 0: start_time: 0.000 duration: 3.368
> > 1: start_time: 0.000 duration: 3.368
> > stream: start_time: 0.000 duration: 3368.220 bitrate=1411 kb/s
> > Input #0, nuv, from '/mnt/store/1155_20060423220000.nuv':
> >   Duration: 00:56:08.2, start: 0.000000, bitrate: 1411 kb/s
> >   Stream #0.0, 29.97 fps(r): Video: mpeg4, yuv420p, 720x480
> >   Stream #0.1: Audio: mp3, 48000 Hz, stereo, 1411 kb/s
> > 2006-07-03 12:02:32.046 duration = 3368
> > Segmentation fault (core dumped)
> >
> > So it would seem you nailed the real problem ... now I need to figure
> > out why it's segfaulting :/
> > This is probably beyond a mytharchive issue but any help you could
> > toss out for troubleshooting is appreciated :-)  Either way I'll keep
> > digging, thanks !!
> >
> > Lonny
> >
> OK, that makes more sense. You need to recompile mytharchive with
> debugging information then run mytharchivehelper under gdb to get a back
> trace. Basically do a make distclean then re-run ./configure adding the
> --compile-type=debug option then compile and install mytharchive as
> normal. Then  run
> mytharchivehelper under gdb like this:
> There's a more detailed description of how to get a bt here
> http://www.mythtv.org/docs/mythtv-HOWTO-22.html#ss22.2

Following the instructions from the above link I get(and compiling
mytharchive with debug on):

(no debugging symbols found)...(no debugging symbols found)...[Thread
debugging using libthread_db enabled]
[New Thread 1109785312 (LWP 15266)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1109785312 (LWP 15266)]
0x00000029 in ?? ()

Thread 1 (Thread 1109785312 (LWP 15266)):
#0  0x00000029 in ?? ()
No symbol table info available.
#1  0x4144c948 in QMutex::~QMutex () from /usr/lib/qt3/lib/libqt-mt.so.3
No symbol table info available.
#2  0x00000000 in ?? ()
No symbol table info available.
#3  0x402ee950 in ?? () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#4  0x401fa42d in ErrorCatcher () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#5  0x4193dec8 in __cxa_finalize () from /lib/tls/libc.so.6
No symbol table info available.
#6  0x400cc823 in ?? () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#7  0x402cb000 in ?? () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#8  0x0000002e in ?? ()
No symbol table info available.
#9  0x0000002f in ?? ()
No symbol table info available.
#10 0x40015ff4 in ?? () from /lib/ld-linux.so.2
No symbol table info available.
#11 0x40dc122f in ?? ()
No symbol table info available.
#12 0x402ee950 in ?? () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#13 0xbffff698 in ?? ()
No symbol table info available.
#14 0x40261156 in _fini () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#15 0x40261156 in _fini () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#16 0x4000bfae in _dl_fini () at dl-fini.c:238
    i = 4
    l = /root/gdbcommands:7: Error in sourced command file:
Variable "l" is not available.

Now where it says no debug symbols found I'm assuming it means from
myth itself so I rebuilt everything with debug: (and only ran it with
the lines you supplied to get rid of that error)
# gdb mytharchivehelper
GNU gdb 6.2-2.1.101mdk (Mandrakelinux)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i586-mandrake-linux-gnu"...Using host
libthread_db library "/lib/tls/libthread_db.so.1".

(gdb) run -p out
Starting program: /usr/local/bin/mytharchivehelper -p out
[Thread debugging using libthread_db enabled]
[New Thread 1110407904 (LWP 26327)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1110407904 (LWP 26327)]
0x00000029 in ?? ()
Current language:  auto; currently c
(gdb) thread apply all bt full

Thread 1 (Thread 1110407904 (LWP 26327)):
#0  0x00000029 in ?? ()
No symbol table info available.
#1  0x41520948 in QMutex::~QMutex () from /usr/lib/qt3/lib/libqt-mt.so.3
No symbol table info available.
#2  0x40325fa8 in __JCR_LIST__ () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#3  0x40325fa8 in __JCR_LIST__ () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#4  0x4022acf0 in __tcf_1 () at util-x11.h:22
No locals.
#5  0x41a11ec8 in __cxa_finalize () from /lib/tls/libc.so.6
No symbol table info available.
#6  0x4010a0c3 in __do_global_dtors_aux () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#7  0x4028da06 in _fini () from /usr/local/lib/libmyth-0.19.so.0
No symbol table info available.
#8  0x4000bfae in _dl_fini () at dl-fini.c:238
        i = 4
        l = Variable "l" is not available.

--
Lonny