Application: kmix (4.3) KDE Platform Version: 4.9.80 Qt Version: 4.8.4 Operating System: Linux 3.6.8-1-ARCH i686 Distribution: "Arch Linux" -- Information about the crash: - What I was doing when the application crashed: trying to change input volume in kmix gui (second tab) - Unusual behavior I noticed: crash immediately (before I even successfully start to drag the slider) - Custom settings of the application: The crash can be reproduced every time. -- Backtrace: Application: KMix (kmix), signal: Segmentation fault Using host libthread_db library "/usr/lib/libthread_db.so.1". [Current thread is 1 (Thread 0xb18a0740 (LWP 3303))] Thread 2 (Thread 0xa4d24b40 (LWP 3304)): #0 0xb2edde3d in clock_gettime () from /usr/lib/librt.so.1 #1 0xb5b4ecf5 in ?? () from /usr/lib/libQtCore.so.4 #2 0xb5c3641e in ?? () from /usr/lib/libQtCore.so.4 #3 0x7fffffff in ?? () #4 0xb5c367aa in ?? () from /usr/lib/libQtCore.so.4 #5 0x7fffffff in ?? () Thread 1 (Thread 0xb18a0740 (LWP 3303)): [KCrash Handler] #6 0xb6618484 in QAbstractSlider::value() const () from /usr/lib/libQtGui.so.4 #7 0xb776a694 in ?? () from /usr/lib/libkdeinit4_kmix.so #8 0xb776daf9 in ?? () from /usr/lib/libkdeinit4_kmix.so #9 0xb5c1bc76 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4 #10 0xb690ee45 in QAbstractSlider::valueChanged(int) () from /usr/lib/libQtGui.so.4 #11 0xb6618523 in QAbstractSlider::setValue(int) () from /usr/lib/libQtGui.so.4 #12 0xb6618810 in QAbstractSlider::triggerAction(QAbstractSlider::SliderAction) () from /usr/lib/libQtGui.so.4 #13 0xb661896f in QAbstractSlider::setSliderPosition(int) () from /usr/lib/libQtGui.so.4 #14 0xb66bd468 in QSlider::mouseMoveEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4 #15 0xb625451c in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4 #16 0xb6619103 in QAbstractSlider::event(QEvent*) () from /usr/lib/libQtGui.so.4 #17 0xb66bce60 in QSlider::event(QEvent*) () from /usr/lib/libQtGui.so.4 #18 0xb61fb0dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4 #19 0xb62005c2 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4 #20 0xb722b781 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5 #21 0xb5c0399e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4 #22 0xb61fbf44 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/libQtGui.so.4 #23 0xb6284495 in ?? () from /usr/lib/libQtGui.so.4 #24 0xb6283143 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4 #25 0xb62ac7a4 in ?? () from /usr/lib/libQtGui.so.4 #26 0xb2d62793 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #27 0xb2d62b30 in ?? () from /usr/lib/libglib-2.0.so.0 #28 0xb2d62c11 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0 #29 0xb5c35901 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4 #30 0xb62ac38a in ?? () from /usr/lib/libQtGui.so.4 #31 0xb5c0247c in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4 #32 0xb5c02771 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4 #33 0xb5c07a0a in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4 #34 0xb61f8f64 in QApplication::exec() () from /usr/lib/libQtGui.so.4 #35 0xb774cd43 in kdemain () from /usr/lib/libkdeinit4_kmix.so #36 0x0804856b in ?? () #37 0xb7584605 in __libc_start_main () from /usr/lib/libc.so.6 #38 0x08048591 in _start () Possible duplicates by query: bug 293776, bug 292837, bug 291418, bug 290742. Reported using DrKonqi
Please recompile kmix with debug symbols enabled and kept.
Created attachment 75572 [details] crash log with debug info 1
Created attachment 75573 [details] crash log with debug info 2 just happened to save two crash log.... nvm
Created attachment 75574 [details] stderr or kmix stderr for the second crash log
So here it is, compiled with -DCMAKE_BUILD_TYPE=RelWithDebInfo hopefully enough.
Git commit 2ff2b0f875357f2f0091a433111c5ee74da6bf29 by Christian Esken. Committed on 04/12/2012 at 21:37. Pushed by esken into branch 'master'. Fix crash in the "feedback loop guard" for the case when there is no playback control on a Volume. M +10 -4 gui/mdwslider.cpp http://commits.kde.org/kmix/2ff2b0f875357f2f0091a433111c5ee74da6bf29
Thanks for your bug report. If it happens only on controls without playback, my fix should work. Please test. ---- Footnote: Cannot test that currently myself (Ubuntu 12.10 doesn't want to hotplug my capture capable audio devices),
*** Bug 311123 has been marked as a duplicate of this bug. ***
*** Bug 311132 has been marked as a duplicate of this bug. ***
Well, the crash also happens when there is playback. (when I am making a phone call with GTalk) but this commit does seem to fix it. THX. close?
Thanks for your super fast test. I agree that the bug can be closed then.
After playing with the problematic part a little bit, I finally understand what you mean by "control without playback" and yes you are right, it happens only on record tab (with no "playback" control). Nvm, I just want to clarify any possible confusion in my previous post. Thx again.