[Bug 373142] [NEW] KDE crash dialog does not produce useful backtraces even when dbg packages are installed

[Alan Jenkins]

Public bug reported:

Environment: Kubuntu 9.04 i386 install
KDE version: 4.2.2-ubuntu4

Today I had a crash in krunner.  The KDE crash dialogue appeared, and
said that no useful backtrace could be generated.  But I *have*
installed the dbg packages.

E.g. I can run gdb against the running krunner, and resolve all symbols.
So the crash handler should be able to as well!

$ gdb -p `pgrep krunner`
GNU gdb 6.8-debian                                                                                                                     
Copyright (C) 2008 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".                                                                                           
Attaching to process 4845                                                                                                              
Reading symbols from /usr/bin/krunner...Reading symbols from /usr/lib/debug/usr/bin/krunner...done.                                    
done.
...
(gdb) where
#0  0xb800a430 in __kernel_vsyscall ()
#1  0xb6795ae7 in *__GI___poll (fds=0x8920140, nfds=6, timeout=4995) at ../sysdeps/unix/sysv/linux/poll.c:87
#2  0xb507574b in g_poll () from /usr/lib/libglib-2.0.so.0
#3  0xb5067f82 in ?? () from /usr/lib/libglib-2.0.so.0
#4  0xb5068268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#5  0xb6c05438 in QEventDispatcherGlib::processEvents (this=0x85bbf58, flags={i = -1074628040}) at kernel/qeventdispatcher_glib.cpp:323
#6  0xb714d3f5 in QGuiEventDispatcherGlib::processEvents (this=0x85bbf58, flags={i = -1074627992}) at kernel/qguieventdispatcher_glib.cpp:202
#7  0xb6bd806a in QEventLoop::processEvents (this=0xbff27ae0, flags={i = -1074627928}) at kernel/qeventloop.cpp:149
#8  0xb6bd84aa in QEventLoop::exec (this=0xbff27ae0, flags={i = -1074627864}) at kernel/qeventloop.cpp:200
#9  0xb6bda959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#10 0xb70abda7 in QApplication::exec () at kernel/qapplication.cpp:3553
#11 0xb7fcd916 in kdemain (argc=1, argv=0xbff27c64) at /build/buildd/kdebase-workspace-4.2.2/krunner/main.cpp:59
#12 0x08048712 in main (argc=Cannot access memory at address 0x6
) at /build/buildd/kdebase-workspace-4.2.2/obj-i486-linux-gnu/krunner/krunner_dummy.cpp:3
(gdb)


And here are the dbg packages I have installed:

$ dpkg-query -l "*dbg*" | grep ii
ii  amarok-dbg                                 2:2.0.2mysql5.1.30-0ubuntu3              debugging symbols for Amarok
ii  kdebase-dbg                                4:4.2.2-0ubuntu4                         debugging symbols for the KDE 4 base applica
ii  kdebase-runtime-dbg                        4:4.2.2-0ubuntu1                         debugging symbols for KDE 4 base runtime mod
ii  kdebase-workspace-dbg                      4:4.2.2-0ubuntu2                         debugging symbols for the KDE 4 base workspa
ii  kdelibs-dbg                                4:3.5.10.dfsg.1-1ubuntu8                 debugging symbols for kdelibs
ii  kdelibs5-dbg                               4:4.2.2-0ubuntu5                         debugging symbols for the KDE 4 libraries mo
ii  lib64gcc1-dbg                              1:4.3.3-5ubuntu4                         GCC support library (debug symbols)
ii  lib64stdc++6-4.2-dbg                       4.2.4-5ubuntu1                           The GNU Standard C++ Library v3 (debugging f
ii  libc6-dbg                                  2.9-4ubuntu6                             GNU C Library: detached debugging symbols
ii  libqt4-dbg                                 4.5.0-0ubuntu4                           Qt 4 library debugging symbols
ii  pkg-create-dbgsym                          0.26                                     automatically build debug symbol ddeb packag
ii  qt-x11-free-dbg                            3:3.3.8-b-5ubuntu1                       debugging symbols for qt-x11-free binaries

** Affects: kdelibs (Ubuntu)
     Importance: Undecided
         Status: New

-- 
KDE crash dialog does not produce useful backtraces even when dbg packages are installed
https://bugs.launchpad.net/bugs/373142
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