Rui Nuno Capela wrote:
gdb ./qjackctl /path/to/core.file
and send me the complete output. Ah, I forgot, that under the gdb prompt,
after it finds the correct point of segfault, you type "bt" (for
backtrace) and enter. Send me the additional trace.
I just can't reproduce this segfaults on any of my trials, no matter how
much I try. Please report whether the crashes are systematically
reproducible and in that case, which are the minimum set of steps to get
one.
the minimum set of steps was starting the app, opening the 'connections'
child window and expanding the view of one of the midi-through-items. A
fiew seconds later the crash documented below appeard.
I did not (yet) get any crash without the alsa-tab involved, everything
ran stable for more than 2 h, but within the last hour i was not able to
reproduce any crash, no matter how i treated the whole app/alsa
connections. Seems all rather unsystematically
the output:
minos@digital:~/qjackctl-0.3.0$ ./qjackctl
Warning: no locale found: /usr/local/share/locale/qjackctl_en_US.qm
Segmentation fault (core dumped)
minos@digital:~/qjackctl-0.3.0$ gdb ./qjackctl core.8274
GNU gdb 6.4.90-debian
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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 "i486-linux-gnu"...Using host libthread_db
library "/lib/i686/cmov/libthread_db.so.1".
warning: Can't read pathname for load map: Input/output error.
Reading symbols from /usr/lib/libjack.so.0...done.
Loaded symbols for /usr/lib/libjack.so.0
Reading symbols from /usr/lib/libasound.so.2...done.
Loaded symbols for /usr/lib/libasound.so.2
Reading symbols from /lib/i686/cmov/libpthread.so.0...done.
Loaded symbols for /lib/i686/cmov/libpthread.so.0
Reading symbols from /usr/lib/libQtXml.so.4...done.
Loaded symbols for /usr/lib/libQtXml.so.4
Reading symbols from /usr/lib/libQtGui.so.4...done.
Loaded symbols for /usr/lib/libQtGui.so.4
Reading symbols from /usr/lib/libQtCore.so.4...done.
Loaded symbols for /usr/lib/libQtCore.so.4
Reading symbols from /usr/lib/libstdc++.so.6...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /lib/i686/cmov/libm.so.6...done.
Loaded symbols for /lib/i686/cmov/libm.so.6
Reading symbols from /lib/libgcc_s.so.1...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /lib/i686/cmov/libc.so.6...done.
Loaded symbols for /lib/i686/cmov/libc.so.6
Reading symbols from /usr/lib/libX11.so.6...done.
Loaded symbols for /usr/lib/libX11.so.6
Reading symbols from /lib/i686/cmov/librt.so.1...done.
Loaded symbols for /lib/i686/cmov/librt.so.1
Reading symbols from /lib/i686/cmov/libdl.so.2...done.
Loaded symbols for /lib/i686/cmov/libdl.so.2
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /usr/lib/libfontconfig.so.1...done.
Loaded symbols for /usr/lib/libfontconfig.so.1
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /usr/lib/libgthread-2.0.so.0...done.
Loaded symbols for /usr/lib/libgthread-2.0.so.0
Reading symbols from /usr/lib/libglib-2.0.so.0...done.
Loaded symbols for /usr/lib/libglib-2.0.so.0
Reading symbols from /usr/lib/libaudio.so.2...done.
Loaded symbols for /usr/lib/libaudio.so.2
Reading symbols from /usr/lib/libXt.so.6...done.
Loaded symbols for /usr/lib/libXt.so.6
Reading symbols from /usr/lib/libpng12.so.0...done.
Loaded symbols for /usr/lib/libpng12.so.0
Reading symbols from /usr/lib/libSM.so.6...done.
Loaded symbols for /usr/lib/libSM.so.6
Reading symbols from /usr/lib/libICE.so.6...done.
Loaded symbols for /usr/lib/libICE.so.6
Reading symbols from /usr/lib/libXi.so.6...done.
Loaded symbols for /usr/lib/libXi.so.6
Reading symbols from /usr/lib/libXrender.so.1...done.
Loaded symbols for /usr/lib/libXrender.so.1
Reading symbols from /usr/lib/libXrandr.so.2...done.
Loaded symbols for /usr/lib/libXrandr.so.2
Reading symbols from /usr/lib/libXfixes.so.3...done.
Loaded symbols for /usr/lib/libXfixes.so.3
Reading symbols from /usr/lib/libXcursor.so.1...done.
Loaded symbols for /usr/lib/libXcursor.so.1
Reading symbols from /usr/lib/libXinerama.so.1...done.
Loaded symbols for /usr/lib/libXinerama.so.1
Reading symbols from /usr/lib/libfreetype.so.6...done.
Loaded symbols for /usr/lib/libfreetype.so.6
Reading symbols from /usr/lib/libXext.so.6...done.
Loaded symbols for /usr/lib/libXext.so.6
Reading symbols from /usr/lib/libXau.so.6...done.
Loaded symbols for /usr/lib/libXau.so.6
Reading symbols from /usr/lib/libXdmcp.so.6...done.
Loaded symbols for /usr/lib/libXdmcp.so.6
Reading symbols from /usr/lib/libexpat.so.1...done.
Loaded symbols for /usr/lib/libexpat.so.1
Reading symbols from /usr/lib/gconv/UTF-16.so...done.
Loaded symbols for /usr/lib/gconv/UTF-16.so
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqgif.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqgif.so
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqjpeg.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqjpeg.so
Reading symbols from /usr/lib/libjpeg.so.62...done.
Loaded symbols for /usr/lib/libjpeg.so.62
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqmng.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqmng.so
Reading symbols from /usr/lib/libmng.so.1...done.
Loaded symbols for /usr/lib/libmng.so.1
Reading symbols from /usr/lib/liblcms.so.1...done.
Loaded symbols for /usr/lib/liblcms.so.1
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqsvg.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqsvg.so
Reading symbols from /usr/lib/libQtSvg.so.4...done.
Loaded symbols for /usr/lib/libQtSvg.so.4
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqtiff.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqtiff.so
Core was generated by `./qjackctl'.
Program terminated with signal 11, Segmentation fault.
#0 0xb7783ba2 in operator new () from /usr/lib/libQtGui.so.4
(gdb) bt
#0 0xb7783ba2 in operator new () from /usr/lib/libQtGui.so.4
#1 0xb7790c0d in QApplicationPrivate::QApplicationPrivate () from
/usr/lib/libQtGui.so.4
#2 0xb77cdff1 in QWidget::window () from /usr/lib/libQtGui.so.4
#3 0xb77c4b65 in QToolTip::showText () from /usr/lib/libQtGui.so.4
#4 0xb77c466f in QToolTip::showText () from /usr/lib/libQtGui.so.4
#5 0xb77c47ad in QToolTip::showText () from /usr/lib/libQtGui.so.4
#6 0x0805bc16 in qjackctlClientListView::eventFilter (this=0x81a1d68,
pObject=0x818e898, pEvent=0xbfc7ace0) at src/qjackctlConnect.cpp:808
#7 0xb77873c0 in QApplicationPrivate::notify_helper () from
/usr/lib/libQtGui.so.4
#8 0xb7788d5c in QApplication::notify () from /usr/lib/libQtGui.so.4
#9 0xb75cd55a in QCoreApplication::notifyInternal () from
/usr/lib/libQtCore.so.4
#10 0xb7784177 in operator new () from /usr/lib/libQtGui.so.4
#11 0xb778b1ac in QApplication::event () from /usr/lib/libQtGui.so.4
#12 0xb7787445 in QApplicationPrivate::notify_helper () from
/usr/lib/libQtGui.so.4
#13 0xb778775e in QApplication::notify () from /usr/lib/libQtGui.so.4
#14 0xb75cd55a in QCoreApplication::notifyInternal () from
/usr/lib/libQtCore.so.4
#15 0xb75d0923 in QCoreApplicationPrivate::appName () from
/usr/lib/libQtCore.so.4
#16 0xb75f98c9 in QEventDispatcherUNIX::registerTimer () from
/usr/lib/libQtCore.so.4
#17 0xb75f6848 in QEventDispatcherGlib::~QEventDispatcherGlib () from
/usr/lib/libQtCore.so.4
#18 0xb70cfa62 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#19 0xb70d2a2f in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#20 0xb70d2f95 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#21 0xb75f6210 in QEventDispatcherGlib::processEvents () from
/usr/lib/libQtCore.so.4
#22 0xb781e188 in QX11Info::copyX11Data () from /usr/lib/libQtGui.so.4
#23 0xb75ca4e2 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#24 0xb75ca664 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#25 0xb75cdca7 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#26 0xb7786fc8 in QApplication::exec () from /usr/lib/libQtGui.so.4
#27 0x08057c56 in main (argc=Cannot access memory at address 0x0
) at src/main.cpp:90
(gdb)
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