I'm trying to debug my program using the gdb attach command and I'm currently having a little trouble.
attach: No such file or directory.
Attaching to process 23224
Reading symbols from /lib64/libpthread.so.0...(no debugging symbols found)...done.
Reading symbols from /usr/lib64/libcrypto.so.10...(no debugging symbols found)...done.
Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/librt.so.1
Reading symbols from /lib64/libdl.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libdl.so.2
Reading symbols from /usr/lib64/libssl.so.10...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libssl.so.10
Reading symbols from /usr/lib64/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libstdc++.so.6
Reading symbols from /lib64/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libm.so.6
Reading symbols from /lib64/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libgcc_s.so.1
Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libc.so.6
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /lib64/libz.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libz.so.1
Reading symbols from /lib64/libgssapi_krb5.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libgssapi_krb5.so.2
Reading symbols from /lib64/libkrb5.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib64/libkrb5.so.3
Reading symbols from /lib64/libcom_err.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libcom_err.so.2
Reading symbols from /lib64/libk5crypto.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib64/libk5crypto.so.3
Reading symbols from /lib64/libkrb5support.so.0...(no debugging symbols found)...done.
Loaded symbols for /lib64/libkrb5support.so.0
Reading symbols from /lib64/libkeyutils.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libkeyutils.so.1
Reading symbols from /lib64/libresolv.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libresolv.so.2
Reading symbols from /lib64/libselinux.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libselinux.so.1
Reading symbols from /lib64/libnss_files.so.2...(no debugging symbols found)...done.
When I add a breakpoint and use run to execute，It stays in this state.
[New Thread 0x7fffe38fc700 (LWP 3343)]
[New Thread 0x7fffe2efb700 (LWP 3344)]
[New Thread 0x7fffe24fa700 (LWP 3345)]
this is my computer configuration
gcc version 4.8.2 20140120 (Red Hat 4.8.2-15) (GCC)
x86_64-redhat-linux
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-47.el6
Please give me some ideas, thanks!
sudo gdb attach pid
That is not a thing. This command tells GDB to load an executable file called attach, and load a core file named pid.
What you want (replace $pid with actual numeric process id of the desired target process):
sudo gdb -p $pid
or alternatively:
sudo gdb -ex 'attach $pid'
Related
My binary uses a number of different shared libraries. While attaching the process with gdb, it takes around 5 minutes to load and read symbols from all of these libraries.
Is there a way to read and load symbols selectively while attaching a process with gdb?
You can set auto-solib-add off and then use the sharedlibrary command to selectively load symbols. Example:
$ gdb -e ./a.out
(gdb) set auto-solib-add off
(gdb) file a.out
Reading symbols from a.out...done.
(gdb) start
Temporary breakpoint 1 at 0x4004ba: file sig.c, line 4.
Starting program: /home/a3f/a.out
Temporary breakpoint 1, main () at sig.c:4
4 do();
(gdb) print environ
No symbol "environ" in current context.
(gdb) info shared
From To Syms Read Shared Object Library
0x00007ffff7ddcae0 0x00007ffff7df5130 No /lib64/ld-linux-x86-64.so.2
No linux-vdso.so.1
0x00007ffff7a504a0 0x00007ffff7b7cc73 No /lib/x86_64-linux-gnu/libc.so.6
(gdb) sharedlibrary libc
Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libc-2.19.so...done.
done.
Loaded symbols for /lib/x86_64-linux-gnu/libc.so.6
(gdb) print environ
$1 = (char **) 0x7fffffffe3b8
(gdb) print _dl_open
No symbol "_dl_open" in current context.
(gdb) sharedlibrary
Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/ld-2.19.so...done.
done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
(gdb) print _dl_open
$1 = {void *(const char *, int, const void *, Lmid_t, int, char **, char **)} 0x7ffff7dee350 <_dl_open>
I have followed the guide here: debugging pintool guide, but I cannot get GDB to find the debugging symbols for my pintool.
First I compiled my pintool with debug information
lotus#c02-0:~/PerforceArch/home/Shadi/HLS/pin/source/tools/lotusTools$ make DEBUG=1 obj-intel64/dst7.so
g++ -shared -Wl,--hash-style=sysv -Wl,-Bsymbolic -Wl,--version-script=../../../source/include/pin/pintool.ver -g -o obj-intel64/dst7.so obj-intel64/dst7.o -L../../../intel64/lib -L../../../intel64/lib-ext -L../../../intel64/runtime/glibc -L../../../extras/xed-intel64/lib -lpin -lxed -lpindwarf -ldl
In two different terminal windows I did the following:
In the first window:
lotus#c02-0:~/PerforceArch/home/Shadi/HLS/pin/source/tools/lotusTools$ ~/PerforceArch/home/Shadi/HLS/pin/intel64/bin/pinbin -pause_tool 10 -t obj-intel64/dst7.so -- ls
Pausing for 10 seconds to attach to process with pid 2214
To load the tool's debug info to gdb use:
add-symbol-file /home/lotus/PerforceArch/home/Shadi/HLS/pin/source/tools/lotusTools/obj-intel64/dst7.so 0x7fa8952e44c0 -s .data 0x7fa895c0f720 -s .bss 0x7fa895c10c40
In the the second window:
lotus#c02-0:~$ /usr/bin/gdb ~/PerforceArch/home/Shadi/HLS/pin/intel64/bin/pinbin
GNU gdb (GDB) SUSE (7.4.50.20120603-2.1.2)
Copyright (C) 2012 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-suse-linux".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/lotus/PerforceArch/home/Shadi/HLS/pin/intel64/bin/pinbin...(no debugging symbols found)...done.
(gdb) attach 2214
Attaching to program: /home/lotus/PerforceArch/home/Shadi/HLS/pin/intel64/bin/pinbin, process 2214
Reading symbols from /lib64/libdl.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libdl.so.2
Reading symbols from /usr/lib64/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libstdc++.so.6
Reading symbols from /lib64/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libm.so.6
Reading symbols from /lib64/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libgcc_s.so.1
Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libc.so.6
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /home/lotus/PerforceArch/home/Shadi/HLS/pin/source/tools/lotusTools/obj-intel64/dst7.so...(no debugging symbols found)...done.
Loaded symbols for /home/lotus/PerforceArch/home/Shadi/HLS/pin/source/tools/lotusTools/obj-intel64/dst7.so
0x00007fa895ce6c80 in __nanosleep_nocancel () from /lib64/libc.so.6
Missing separate debuginfos, use: zypper install glibc-debuginfo-2.15-22.6.4.x86_64 libgcc47-debuginfo-4.7.1_20120723-1.1.1.x86_64 libstdc++47-debuginfo-4.7.1_20120723-1.1.1.x86_64
(gdb) add-symbol-file /home/lotus/PerforceArch/home/Shadi/HLS/pin/source/tools/lotusTools/obj-intel64/dst7.so 0x7fa8952e44c0 -s .data 0x7fa895c0f720 -s .bss 0x7fa895c10c40
add symbol table from file "/home/lotus/PerforceArch/home/Shadi/HLS/pin/source/tools/lotusTools/obj-intel64/dst7.so" at
.text_addr = 0x7fa8952e44c0
.data_addr = 0x7fa895c0f720
.bss_addr = 0x7fa895c10c40
(y or n) y
Reading symbols from /home/lotus/PerforceArch/home/Shadi/HLS/pin/source/tools/lotusTools/obj-intel64/dst7.so...(no debugging symbols found)...done.
The problem is that on the last line of the second window, it says no debugging symbols were found.
Before I compiled with debug symbols on, I had compiled with debug symbols off. Before recompiling with debug symbols on, I deleted the .so file but not the .o file. Deleting the old .o file and then compiling again with debug symbols on, fixed the problem.
I am trying to create a core dump and analyze it with gdb. This is the code I wrote to create a core dump.
#include <iostream>
void bar()
{
char *p = (char *) 123;
std::cout << "bar start\n";
std::cout << *p << "\n";
std::cout << "bar end\n";
}
void foo()
{
std::cout << "foo start\n";
bar();
std::cout << "foo end\n";
}
int main()
{
foo();
}
This is my Makefile.
all:
g++ -g foo.cc -o foo
objcopy --only-keep-debug foo foo.dbg
objcopy --strip-debug foo
clean:
rm -rf core* foo
After running make and ./foo, this is what my directory looks like.
# ls
core.28091 foo foo.cc foo.dbg Makefile
I am able to analyze the core dump like this. I launch gdb by specifying the executable and the core file as command line arguments. Then I load the symbols from foo.dbg with the symbol-file foo.dbg command.
[root#centos crash]# gdb foo core.28091
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6_4.1)
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-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /root/lab/crash/foo...(no debugging symbols found)...done.
[New Thread 28091]
Missing separate debuginfo for
Try: yum --disablerepo='*' --enablerepo='*-debug*' install /usr/lib/debug/.build-id/81/a81be2e44c93640adedb62adc93a47f4a09dd1
Reading symbols from /usr/lib64/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libstdc++.so.6
Reading symbols from /lib64/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libm.so.6
Reading symbols from /lib64/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libgcc_s.so.1
Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libc.so.6
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Core was generated by `./foo'.
Program terminated with signal 11, Segmentation fault.
#0 0x000000000040076f in bar() ()
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.132.el6.x86_64 libgcc-4.4.7-4.el6.x86_64 libstdc++-4.4.7-4.el6.x86_64
(gdb) symbol-file foo.dbg
Reading symbols from /root/lab/crash/foo.dbg...done.
(gdb) bt
#0 0x000000000040076f in bar () at foo.cc:8
#1 0x00000000004007b7 in foo () at foo.cc:15
#2 0x00000000004007d1 in main () at foo.cc:21
(gdb) list
12 void foo()
13 {
14 std::cout << "foo start\n";
15 bar();
16 std::cout << "foo end\n";
17 }
18
19 int main()
20 {
21 foo();
(gdb)
However, I want to specify the symbol file name in the command line argument as well. But it doesn't seem to work. See the output below.
[root#centos crash]# gdb -s foo.dbg foo core.28091
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6_4.1)
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-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /root/lab/crash/foo...(no debugging symbols found)...done.
[New Thread 28091]
Missing separate debuginfo for
Try: yum --disablerepo='*' --enablerepo='*-debug*' install /usr/lib/debug/.build-id/81/a81be2e44c93640adedb62adc93a47f4a09dd1
Reading symbols from /usr/lib64/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libstdc++.so.6
Reading symbols from /lib64/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libm.so.6
Reading symbols from /lib64/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libgcc_s.so.1
Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libc.so.6
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Core was generated by `./foo'.
Program terminated with signal 11, Segmentation fault.
#0 0x000000000040076f in bar() ()
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.132.el6.x86_64 libgcc-4.4.7-4.el6.x86_64 libstdc++-4.4.7-4.el6.x86_64
(gdb) bt
#0 0x000000000040076f in bar() ()
#1 0x00000000004007b7 in foo() ()
#2 0x00000000004007d1 in main ()
(gdb) list
No symbol table is loaded. Use the "file" command.
Why does it say no symbol table has been loaded even though I have specified it as an argument to the -s option?
It looks like a bug in gdb. gdb sets symarg to the argument that follows -s, but then later in the code, it unconditionally sets symarg to the executable's name. Proposed minimal diff follows:
$ diff -C 1 main.c.orig main.c
*** main.c.orig 2014-07-29 08:37:42.000000000 -0400
--- main.c 2014-09-02 16:27:54.079039046 -0400
***************
*** 864,866 ****
}
! symarg = argv[optind];
execarg = argv[optind];
--- 864,866 ----
}
! if (symarg == NULL) symarg = argv[optind];
execarg = argv[optind];
***************
*** 877,879 ****
{
! symarg = argv[optind];
execarg = argv[optind];
--- 877,879 ----
{
! if (symarg == NULL) symarg = argv[optind];
execarg = argv[optind];
Is possible to recover the exact values of argv and argc parameters of a main after the application crashed?
I need to use only the application core-dump and gdb debugger on Linux.
Yes, if application was compiled with debug info. Open core dump in gdb and find frame containing main function. Then go to this frame and print values of argv and argc. Here is sample gdb session.
[root#localhost ~]# gdb ./a.out core.2020
GNU gdb (GDB) 7.2
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 "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /root/a.out...done.
[New Thread 2020]
warning: Can't read pathname for load map: Input/output error.
Reading symbols from /usr/lib/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /lib/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/ld-linux.so.2
Core was generated by `./a.out'.
Program terminated with signal 6, Aborted.
#0 0x0027b424 in __kernel_vsyscall ()
(gdb) bt
#0 0x0027b424 in __kernel_vsyscall ()
#1 0x00b28b91 in raise () from /lib/libc.so.6
#2 0x00b2a46a in abort () from /lib/libc.so.6
#3 0x007d3397 in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/libstdc++.so.6
#4 0x007d1226 in ?? () from /usr/lib/libstdc++.so.6
#5 0x007d1263 in std::terminate() () from /usr/lib/libstdc++.so.6
#6 0x007d13a2 in __cxa_throw () from /usr/lib/libstdc++.so.6
#7 0x08048940 in main (argv=1, argc=0xbfcf1754) at test.cpp:14
(gdb) f 7
#7 0x08048940 in main (argv=1, argc=0xbfcf1754) at test.cpp:14
14 throw std::runtime_error("123");
(gdb) p argv
$1 = 1
(gdb) p argc
$2 = (char **) 0xbfcf1754
(gdb)
Looks like you need to start from the basics..!!
compiler your application code with -g flag, make sure you dont strip it.
Say if I wanted to compile hello.c
gcc -c -g hello.c -o hello.o
gcc hello.o -o hello
now if you dont want to debug
ulimit -c unlimited
./hello
when the application crashes a core file wiil be generated.
To examine the core file
"gdb ./hello core.$$$" this will list you your stack.
you can also choose to debug the image
gdb hello
There are a lot of stuffs over the internet about GDB, do go through them.
I'm working on a 3d music visualizer using Ogre3d, basically it's a spectrum analizer, a lot like the old xmms plugin:
It works well, the bars are drawn and updated, there are no framerate issues, but it crashes randomly.
Sometimes it can run without problems, finish the song, other times it crashes instantly, other times the music just stops, without a crash.
Here is the source code for the main class :
https://github.com/balazsbela/OgreVisualizer/blob/master/src/VisualizerApplication.cpp#L221
Also the crashes seem to happen less often when I display the framerate overlay from Ogre samples.
Would limiting the framerate help ?
The crashes are seemingly random. Is it a performance issue ?
Please help me out, I'm quite lost on this one, I also posted on Ogre3d forums but I received no responses.
(http)://www.ogre3d.org/forums/viewtopic.php?f=2&t=63207
Thank you.
Backtrace:
balazsbela#darknet:~/workspace/OgreVisualizer/Release$ gdb OgreVisualizer core
GNU gdb (GDB) 7.2-debian
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 "i486-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/balazsbela/workspace/OgreVisualizer/Release/OgreVisualizer...done.
[New Thread 17705]
[New Thread 17702]
[New Thread 17703]
[New Thread 17700]
Reading symbols from /usr/lib/libv4l/v4l1compat.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libv4l/v4l1compat.so
Reading symbols from /usr/local/lib/libOgreMain.so.1.7.1...done.
Loaded symbols for /usr/local/lib/libOgreMain.so.1.7.1
Reading symbols from /usr/lib/libfftw3.so.3...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libfftw3.so.3
Reading symbols from /usr/lib/libSDL_sound-1.0.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libSDL_sound-1.0.so.1
Reading symbols from /usr/lib/libSDL-1.2.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libSDL-1.2.so.0
Reading symbols from /usr/lib/libSDL_mixer-1.2.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libSDL_mixer-1.2.so.0
Reading symbols from /usr/lib/libOIS-1.2.0.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libOIS-1.2.0.so
Reading symbols from /usr/lib/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /lib/i686/cmov/libm.so.6...Reading symbols from /usr/lib/debug/lib/i686/cmov/libm-2.11.2.so...done.
done.
Loaded symbols for /lib/i686/cmov/libm.so.6
Reading symbols from /lib/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /lib/i686/cmov/libc.so.6...Reading symbols from /usr/lib/debug/lib/i686/cmov/libc-2.11.2.so...done.
done.
Loaded symbols for /lib/i686/cmov/libc.so.6
Reading symbols from /lib/i686/cmov/libpthread.so.0...Reading symbols from /usr/lib/debug/lib/i686/cmov/libpthread-2.11.2.so...done.
done.
Loaded symbols for /lib/i686/cmov/libpthread.so.0
Reading symbols from /usr/local/lib/libv4l1.so.0...done.
Loaded symbols for /usr/local/lib/libv4l1.so.0
Reading symbols from /usr/lib/libfreetype.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libfreetype.so.6
Reading symbols from /usr/lib/libSM.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libSM.so.6
Reading symbols from /usr/lib/libICE.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libICE.so.6
Reading symbols from /usr/lib/libX11.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libX11.so.6
Reading symbols from /usr/lib/libXext.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXext.so.6
Reading symbols from /usr/lib/libXt.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXt.so.6
Reading symbols from /usr/lib/libXaw.so.7...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXaw.so.7
Reading symbols from /lib/i686/cmov/libdl.so.2...Reading symbols from /usr/lib/debug/lib/i686/cmov/libdl-2.11.2.so...done.
done.
Loaded symbols for /lib/i686/cmov/libdl.so.2
Reading symbols from /usr/lib/libboost_thread.so.1.42.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libboost_thread.so.1.42.0
Reading symbols from /usr/lib/libboost_date_time.so.1.42.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libboost_date_time.so.1.42.0
Reading symbols from /usr/lib/libfreeimage.so.3...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libfreeimage.so.3
Reading symbols from /usr/lib/libzzip-0.so.13...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libzzip-0.so.13
Reading symbols from /usr/lib/libz.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /usr/lib/libsmpeg-0.4.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libsmpeg-0.4.so.0
Reading symbols from /usr/lib/libmikmod.so.2...(no debugging symbols found)...done.
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Core was generated by `./OgreVisualizer'.
Program terminated with signal 11, Segmentation fault.
#0 0xb6dc563d in std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node_base&) ()
from /usr/lib/libstdc++.so.6
(gdb) bt
#0 0xb6dc563d in std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node_base&) ()
from /usr/lib/libstdc++.so.6
#1 0xb73bb3c2 in std::_Rb_tree<Ogre::Node*, Ogre::Node*, std::_Identity<Ogre::Node*>, std::less<Ogre::Node*>, Ogre::STLAllocator<Ogre::Node*, Ogre::CategorisedAllocPolicy<(Ogre::MemoryCategory)0> > >::_M_insert_(std::_Rb_tree_node_base const*, std::_Rb_tree_node_base const*, Ogre::Node* const&) ()
from /usr/local/lib/libOgreMain.so.1.7.1
#2 0xb73b5a52 in _M_insert_unique (this=0xb6157ea0, child=0xb616aff8, forceParentUpdate=false) at /usr/include/c++/4.4/bits/stl_tree.h:1182
#3 insert (this=0xb6157ea0, child=0xb616aff8, forceParentUpdate=false) at /usr/include/c++/4.4/bits/stl_set.h:411
#4 Ogre::Node::requestUpdate (this=0xb6157ea0, child=0xb616aff8, forceParentUpdate=false)
at /home/balazsbela/Downloads/ogre_src_v1-7-1/OgreMain/src/OgreNode.cpp:805
#5 0xb73b6a40 in Ogre::Node::needUpdate (this=0xb616aff8, forceParentUpdate=92)
at /home/balazsbela/Downloads/ogre_src_v1-7-1/OgreMain/src/OgreNode.cpp:789
#6 0xb73b5038 in Ogre::Node::setScale (this=0x1825c, scale=...) at /home/balazsbela/Downloads/ogre_src_v1-7-1/OgreMain/src/OgreNode.cpp:638
#7 0x0805d306 in VisualizerApplication::adjustNodes (this=0x9cd4808) at ../src/VisualizerApplication.cpp:236
#8 0xb6e867f0 in ?? () from /usr/lib/libSDL_mixer-1.2.so.0
#9 0xb6e8719a in ?? () from /usr/lib/libSDL_mixer-1.2.so.0
#10 0xb6ed9b0d in ?? () from /usr/lib/libSDL-1.2.so.0
#11 0xb6ee185e in ?? () from /usr/lib/libSDL-1.2.so.0
#12 0xb6f2e0bd in ?? () from /usr/lib/libSDL-1.2.so.0
#13 0xb6bc7955 in start_thread (arg=0xb198ab70) at pthread_create.c:300
#14 0xb6ca6e7e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
(gdb)
Ogre.log: http://pastie.org/1581790
I can't find line 236 in the link you posted, but this kind of segfault is usually linked to changing a STL structure while you are accessing it with an iterator in a function beneath it in the stack.