Application: systemsettings5 (5.18.5) Qt Version: 5.12.7 Frameworks Version: 5.71.0 Operating System: Linux 5.3.18-lp152.14-default x86_64 Windowing system: X11 Distribution: openSUSE Leap 15.2 -- Information about the crash: - What I was doing when the application crashed: I was downloading global theme opensuse dark when systemsettings5 crash The crash can be reproduced every time. -- Backtrace: Application: Preferencias del sistema (systemsettings5), signal: Segmentation fault Using host libthread_db library "/lib64/libthread_db.so.1". [Current thread is 1 (Thread 0x7f01c455d900 (LWP 9593))] Thread 10 (Thread 0x7f019135e700 (LWP 9612)): #0 0x00007f01b8f05ab9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0 #1 0x00007f01b8eb9b67 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0 #2 0x00007f01b8eba6ab in ?? () from /usr/lib64/libglib-2.0.so.0 #3 0x00007f01b8eba88c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #4 0x00007f01c037b19b in QEventDispatcherGlib::processEvents (this=0x55da658f0d80, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #5 0x00007f01c031c32a in QEventLoop::exec (this=this@entry=0x7f019135dc40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #6 0x00007f01c014210a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531 #7 0x00007f01be129146 in ?? () from /usr/lib64/libQt5Quick.so.5 #8 0x00007f01c01438b2 in QThreadPrivate::start (arg=0x55da65909400) at thread/qthread_unix.cpp:361 #9 0x00007f01bb6484f9 in start_thread () from /lib64/libpthread.so.0 #10 0x00007f01bf9e3f2f in clone () from /lib64/libc.so.6 Thread 9 (Thread 0x7f0191b5f700 (LWP 9611)): #0 0x00007f01bf9d5220 in read () from /lib64/libc.so.6 #1 0x00007f01b8f019a0 in ?? () from /usr/lib64/libglib-2.0.so.0 #2 0x00007f01b8eba298 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0 #3 0x00007f01b8eba720 in ?? () from /usr/lib64/libglib-2.0.so.0 #4 0x00007f01b8eba88c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #5 0x00007f01c037b19b in QEventDispatcherGlib::processEvents (this=0x55da6574d6b0, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #6 0x00007f01c031c32a in QEventLoop::exec (this=this@entry=0x7f0191b5ecb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #7 0x00007f01c014210a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531 #8 0x00007f01c01438b2 in QThreadPrivate::start (arg=0x55da6574d620) at thread/qthread_unix.cpp:361 #9 0x00007f01bb6484f9 in start_thread () from /lib64/libpthread.so.0 #10 0x00007f01bf9e3f2f in clone () from /lib64/libc.so.6 Thread 8 (Thread 0x7f0195c9e700 (LWP 9603)): #0 0x00007f01bf9de7a9 in syscall () from /lib64/libc.so.6 #1 0x00007f01c0145f94 in QtLinuxFutex::_q_futex (val3=0, addr2=0x0, val2=0, val=<optimized out>, op=0, addr=<optimized out>) at thread/qfutex_p.h:92 #2 QtLinuxFutex::futexWait<QBasicAtomicInteger<unsigned int> > (expectedValue=<optimized out>, futex=...) at thread/qfutex_p.h:107 #3 futexSemaphoreTryAcquire_loop<false> (timeout=-1, nn=8589934593, curValue=<optimized out>, u=...) at thread/qsemaphore.cpp:219 #4 futexSemaphoreTryAcquire<false> (timeout=-1, n=<optimized out>, u=...) at thread/qsemaphore.cpp:262 #5 QSemaphore::acquire (this=0x7f01bcfa1460, n=<optimized out>) at thread/qsemaphore.cpp:326 #6 0x00007f01bcce3044 in ?? () from /usr/lib64/libQt5Network.so.5 #7 0x00007f01c01438b2 in QThreadPrivate::start (arg=0x7f01bcfa1440) at thread/qthread_unix.cpp:361 #8 0x00007f01bb6484f9 in start_thread () from /lib64/libpthread.so.0 #9 0x00007f01bf9e3f2f in clone () from /lib64/libc.so.6 Thread 7 (Thread 0x7f019649f700 (LWP 9602)): #0 0x00007f01bf9d96db in poll () from /lib64/libc.so.6 #1 0x00007f01b8eba779 in ?? () from /usr/lib64/libglib-2.0.so.0 #2 0x00007f01b8eba88c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #3 0x00007f01c037b19b in QEventDispatcherGlib::processEvents (this=0x55da64d6f070, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #4 0x00007f01c031c32a in QEventLoop::exec (this=this@entry=0x7f019649ecb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #5 0x00007f01c014210a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531 #6 0x00007f01c01438b2 in QThreadPrivate::start (arg=0x55da64f3e650) at thread/qthread_unix.cpp:361 #7 0x00007f01bb6484f9 in start_thread () from /lib64/libpthread.so.0 #8 0x00007f01bf9e3f2f in clone () from /lib64/libc.so.6 Thread 6 (Thread 0x7f01979bf700 (LWP 9601)): #0 0x00007f01bf9daac7 in ioctl () from /lib64/libc.so.6 #1 0x00007f01a5c219fc in ?? () from /usr/lib64/libnvidia-glcore.so.440.82 #2 0x00007f01a5c229e7 in ?? () from /usr/lib64/libnvidia-glcore.so.440.82 #3 0x00007f01a5c23943 in ?? () from /usr/lib64/libnvidia-glcore.so.440.82 #4 0x00007f01a57a179a in ?? () from /usr/lib64/libnvidia-glcore.so.440.82 #5 0x00007f01a5889a25 in ?? () from /usr/lib64/libnvidia-glcore.so.440.82 #6 0x00007f01a57800ce in ?? () from /usr/lib64/libnvidia-glcore.so.440.82 #7 0x00007f01a69681d4 in ?? () from /usr/lib64/libGLX_nvidia.so.0 #8 0x00007f01a693d071 in glXSwapBuffers () from /usr/lib64/libGLX_nvidia.so.0 #9 0x00007f01a6e09312 in ?? () from /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so #10 0x00007f01c0bd08ef in QOpenGLContext::swapBuffers(QSurface*) () from /usr/lib64/libQt5Gui.so.5 #11 0x00007f01be1ac429 in ?? () from /usr/lib64/libQt5Quick.so.5 #12 0x00007f01be1b0188 in ?? () from /usr/lib64/libQt5Quick.so.5 #13 0x00007f01c01438b2 in QThreadPrivate::start (arg=0x55da65344740) at thread/qthread_unix.cpp:361 #14 0x00007f01bb6484f9 in start_thread () from /lib64/libpthread.so.0 #15 0x00007f01bf9e3f2f in clone () from /lib64/libc.so.6 Thread 5 (Thread 0x7f019a517700 (LWP 9600)): #0 0x00007ffe3707cb76 in clock_gettime () #1 0x00007f01bf9f1836 in clock_gettime () from /lib64/libc.so.6 #2 0x00007f01c037aa81 in qt_clock_gettime (ts=0x7f019a516a10, clock=<optimized out>) at kernel/qelapsedtimer_unix.cpp:111 #3 do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166 #4 qt_gettime () at kernel/qelapsedtimer_unix.cpp:175 #5 0x00007f01c03792b9 in QTimerInfoList::updateCurrentTime (this=this@entry=0x55da65030600) at kernel/qtimerinfo_unix.cpp:91 #6 0x00007f01c0379895 in QTimerInfoList::timerWait (this=0x55da65030600, tm=...) at kernel/qtimerinfo_unix.cpp:388 #7 0x00007f01c037aede in timerSourcePrepareHelper (timeout=0x7f019a516ae4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:132 #8 timerSourcePrepare (source=<optimized out>, timeout=0x7f019a516ae4) at kernel/qeventdispatcher_glib.cpp:165 #9 0x00007f01b8eb9cd9 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0 #10 0x00007f01b8eba6ab in ?? () from /usr/lib64/libglib-2.0.so.0 #11 0x00007f01b8eba88c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #12 0x00007f01c037b19b in QEventDispatcherGlib::processEvents (this=0x55da651d6640, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #13 0x00007f01c031c32a in QEventLoop::exec (this=this@entry=0x7f019a516cb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #14 0x00007f01c014210a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531 #15 0x00007f01c01438b2 in QThreadPrivate::start (arg=0x55da651d0c60) at thread/qthread_unix.cpp:361 #16 0x00007f01bb6484f9 in start_thread () from /lib64/libpthread.so.0 #17 0x00007f01bf9e3f2f in clone () from /lib64/libc.so.6 Thread 4 (Thread 0x7f01a225f700 (LWP 9597)): #0 QMutex::lock (this=this@entry=0x55da64418ce0) at thread/qmutex.cpp:222 #1 0x00007f01c037b87b in QMutexLocker::QMutexLocker (m=0x55da64418ce0, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:206 #2 QThreadData::canWaitLocked (this=0x55da64418cb0) at ../../include/QtCore/5.12.7/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:269 #3 postEventSourcePrepare (timeout=<synthetic pointer>, s=0x55da644156b0) at kernel/qeventdispatcher_glib.cpp:259 #4 postEventSourceCheck (source=0x55da644156b0) at kernel/qeventdispatcher_glib.cpp:269 #5 0x00007f01b8eba1b9 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0 #6 0x00007f01b8eba720 in ?? () from /usr/lib64/libglib-2.0.so.0 #7 0x00007f01b8eba88c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #8 0x00007f01c037b19b in QEventDispatcherGlib::processEvents (this=0x55da64418650, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #9 0x00007f01c031c32a in QEventLoop::exec (this=this@entry=0x7f01a225ec90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #10 0x00007f01c014210a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531 #11 0x00007f01bdc53ba5 in ?? () from /usr/lib64/libQt5Qml.so.5 #12 0x00007f01c01438b2 in QThreadPrivate::start (arg=0x55da6441ed00) at thread/qthread_unix.cpp:361 #13 0x00007f01bb6484f9 in start_thread () from /lib64/libpthread.so.0 #14 0x00007f01bf9e3f2f in clone () from /lib64/libc.so.6 Thread 3 (Thread 0x7f01ace77700 (LWP 9595)): #0 0x00007f01b8eba781 in ?? () from /usr/lib64/libglib-2.0.so.0 #1 0x00007f01b8eba88c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #2 0x00007f01c037b19b in QEventDispatcherGlib::processEvents (this=0x55da641f52e0, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #3 0x00007f01c031c32a in QEventLoop::exec (this=this@entry=0x7f01ace76c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #4 0x00007f01c014210a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531 #5 0x00007f01c07eecd5 in ?? () from /usr/lib64/libQt5DBus.so.5 #6 0x00007f01c01438b2 in QThreadPrivate::start (arg=0x7f01c0a66d80) at thread/qthread_unix.cpp:361 #7 0x00007f01bb6484f9 in start_thread () from /lib64/libpthread.so.0 #8 0x00007f01bf9e3f2f in clone () from /lib64/libc.so.6 Thread 2 (Thread 0x7f01b07ff700 (LWP 9594)): #0 0x00007f01bf9d96db in poll () from /lib64/libc.so.6 #1 0x00007f01bb205307 in ?? () from /usr/lib64/libxcb.so.1 #2 0x00007f01bb206f3a in xcb_wait_for_event () from /usr/lib64/libxcb.so.1 #3 0x00007f01b3637300 in ?? () from /usr/lib64/libQt5XcbQpa.so.5 #4 0x00007f01c01438b2 in QThreadPrivate::start (arg=0x55da64132960) at thread/qthread_unix.cpp:361 #5 0x00007f01bb6484f9 in start_thread () from /lib64/libpthread.so.0 #6 0x00007f01bf9e3f2f in clone () from /lib64/libc.so.6 Thread 1 (Thread 0x7f01c455d900 (LWP 9593)): [KCrash Handler] #4 0x00007f01c1fd88f4 in KJob::error (this=this@entry=0x55da65015e00) at /usr/src/debug/kcoreaddons-5.71.0-lp152.1.1.x86_64/src/lib/jobs/kjob.cpp:197 #5 0x00007f019fdfeac3 in KNSCore::KPackageJob::<lambda(KJob*)>::operator() (job=0x55da65015e00, __closure=0x55da64fc3120) at /usr/src/debug/knewstuff-5.71.0-lp152.1.1.x86_64/src/core/jobs/kpackagejob.cpp:142 #6 QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<KJob*>, void, KNSCore::KPackageJob::start()::<lambda(KJob*)> >::call (arg=<optimized out>, f=...) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:146 #7 QtPrivate::Functor<KNSCore::KPackageJob::start()::<lambda(KJob*)>, 1>::call<QtPrivate::List<KJob*>, void> (arg=<optimized out>, f=...) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:256 #8 QtPrivate::QFunctorSlotObject<KNSCore::KPackageJob::start()::<lambda(KJob*)>, 1, QtPrivate::List<KJob*>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=1, this_=0x55da64fc3110, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:439 #9 0x00007f01c034e7a2 in QObject::event (this=0x55da64cb0070, e=<optimized out>) at kernel/qobject.cpp:1261 #10 0x00007f01c13e4a0c in QApplicationPrivate::notify_helper (this=this@entry=0x55da6410f020, receiver=receiver@entry=0x55da64cb0070, e=e@entry=0x55da65036890) at kernel/qapplication.cpp:3701 #11 0x00007f01c13ec020 in QApplication::notify (this=0x7ffe3706a500, receiver=0x55da64cb0070, e=0x55da65036890) at kernel/qapplication.cpp:3447 #12 0x00007f01c031e0d8 in QCoreApplication::notifyInternal2 (receiver=0x55da64cb0070, event=0x55da65036890) at kernel/qcoreapplication.cpp:1088 #13 0x00007f01c031e2ae in QCoreApplication::sendEvent (receiver=<optimized out>, event=event@entry=0x55da65036890) at kernel/qcoreapplication.cpp:1476 #14 0x00007f01c0320c97 in QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x55da64104d40) at kernel/qcoreapplication.cpp:1825 #15 0x00007f01c0321238 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1679 #16 0x00007f01c037bb63 in postEventSourceDispatch (s=0x55da641f1a50) at kernel/qeventdispatcher_glib.cpp:276 #17 0x00007f01b8eba464 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0 #18 0x00007f01b8eba800 in ?? () from /usr/lib64/libglib-2.0.so.0 #19 0x00007f01b8eba88c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #20 0x00007f01c037b17f in QEventDispatcherGlib::processEvents (this=0x55da641156a0, flags=...) at kernel/qeventdispatcher_glib.cpp:422 #21 0x00007f01c031c32a in QEventLoop::exec (this=this@entry=0x7ffe3706a420, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #22 0x00007f01c0325530 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1389 #23 0x000055da63037e00 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/systemsettings5-5.18.5-lp152.1.2.x86_64/app/main.cpp:70 [Inferior 1 (process 9593) detached] The reporter indicates this bug may be a duplicate of or related to bug 423719. Possible duplicates by query: bug 423719, bug 278769, bug 272154. Reported using DrKonqi
I cannot reproduce it, but looking at the code there's some QEventLoop usage in the relevant code, that's usually a red flag
Every thread has an event loop, that's not a problem. Using a nested QEventLoop would be problematic, but that is not visible from the backtrace.
There is a nested event loop in the code
Created attachment 130337 [details] attachment-30481-0.html I fixed the problem by removing kde /home/xxxx/.conf configuration file and rebooting to generate a clean one. It works well. El miércoles, 22 de julio de 2020 05:07:22 p. m. GMT-3, Christoph Feck <bugzilla_noreply@kde.org> escribió: https://bugs.kde.org/show_bug.cgi?id=423766 --- Comment #2 from Christoph Feck <cfeck@kde.org> --- Every thread has an event loop, that's not a problem. Using a nested QEventLoop would be problematic, but that is not visible from the backtrace.
Created attachment 131067 [details] New crash information added by DrKonqi systemsettings5 (5.19.4) using Qt 5.15.0 - What I was doing when the application crashed: I was scrolling on new global themes and then system settings crashed as soon as I clicked on one of the themes to preview not on install button. -- Backtrace (Reduced): #4 0x00007fb41995e974 in KJob::error() const (this=this@entry=0x5582f967e310) at /usr/src/debug/kcoreaddons-5.73.0-1.1.x86_64/src/lib/jobs/kjob.h:655 #5 0x00007fb3d099e552 in operator() (job=0x5582f967e310, __closure=0x5582fddff9f0) at /usr/src/debug/knewstuff-5.73.0-1.1.x86_64/src/core/jobs/kpackagejob.cpp:142 #8 QtPrivate::QFunctorSlotObject<KNSCore::KPackageJob::start()::<lambda(KJob*)>, 1, QtPrivate::List<KJob*>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x5582fddff9e0, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:443 #9 0x00007fb418833b41 in QObject::event(QEvent*) (this=0x7fb40c0182d0, e=0x5582f926ce90) at kernel/qobject.cpp:1314 #10 0x00007fb4193610cf in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x7fb40c0182d0, e=0x5582f926ce90) at kernel/qapplication.cpp:3671
Possible duplicate of BUG 425245.
*** This bug has been marked as a duplicate of bug 425245 ***