Bug 382440

Summary: desktop viewer program
Product: [Applications] Discover Reporter: f14
Component: discoverAssignee: Aleix Pol <aleixpol>
Status: RESOLVED DUPLICATE    
Severity: crash CC: admin
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.9.4   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description f14 2017-07-17 20:04:57 UTC 
Application: plasma-discover (5.9.4)

Qt Version: 5.7.1
Frameworks Version: 5.31.0
Operating System: Linux 4.10.0-26-generic x86_64
Distribution: Ubuntu 17.04

-- Information about the crash:
- What I was doing when the application crashed:
I was installing remote desktop viewer program when it crashed

Was running Firefox, VMware workstation, Keepassx, Konsole, Discover and Ksysguard
- Unusual behavior I noticed:

- Custom settings of the application:

The crash can be reproduced sometimes.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5e375c7440 (LWP 5887))]

Thread 12 (Thread 0x7f5d9cff9700 (LWP 32725)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f5e33577a86 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f5e335732b2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f5e33576c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5e2f9516da in start_thread (arg=0x7f5d9cff9700) at pthread_create.c:456
#5  0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f5df8ead700 (LWP 32724)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f5e33577a86 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f5e335732b2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f5e33576c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5e2f9516da in start_thread (arg=0x7f5df8ead700) at pthread_create.c:456
#5  0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f5d5ffff700 (LWP 5930)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f5e33577b4b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f5e369bd495 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f5e369bdd8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f5e33576c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5e2f9516da in start_thread (arg=0x7f5d5ffff700) at pthread_create.c:456
#6  0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f5df98b1700 (LWP 5900)):
#0  0x00007f5e32b6ed8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5e2d7ee576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e2d7ee68c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e3379af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5e3374488a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5e33571fe3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5e33576c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5e2f9516da in start_thread (arg=0x7f5df98b1700) at pthread_create.c:456
#8  0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f5dfbfff700 (LWP 5897)):
#0  0x00007f5e32b6ed8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5e2d7ee576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e2d7ee68c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e3379af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5e3374488a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5e33571fe3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5e33576c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5e2f9516da in start_thread (arg=0x7f5dfbfff700) at pthread_create.c:456
#8  0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f5e012aa700 (LWP 5895)):
#0  0x00007f5e32b6ed8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5e2d7ee576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e2d7ee902 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e02ea2476 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f5e2d815f65 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5e2f9516da in start_thread (arg=0x7f5e012aa700) at pthread_create.c:456
#6  0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f5e01aab700 (LWP 5894)):
#0  0x00007f5e32b6ed8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5e2d7ee576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e2d7ee68c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e2d7ee6d1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5e2d815f65 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5e2f9516da in start_thread (arg=0x7f5e01aab700) at pthread_create.c:456
#6  0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f5e1923f700 (LWP 5893)):
#0  0x00007f5e32b6ed8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5e2d7ee576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e2d7ee68c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e3379af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5e3374488a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5e33571fe3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5e3694e4c6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f5e33576c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5e2f9516da in start_thread (arg=0x7f5e1923f700) at pthread_create.c:456
#9  0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f5e1b460700 (LWP 5890)):
#0  0x00007f5e32b6ed8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5e2d7ee576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e2d7ee68c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e3379af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5e3374488a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5e33571fe3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5e340fbdf5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f5e33576c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5e2f9516da in start_thread (arg=0x7f5e1b460700) at pthread_create.c:456
#9  0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f5e1c671700 (LWP 5889)):
#0  0x00007ffe02dfd947 in ?? ()
#1  0x00007ffe02dfdbd9 in clock_gettime ()
#2  0x00007f5e32b89506 in __GI___clock_gettime (clock_id=1, tp=0x7f5e1c670a30) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007f5e3361bf71 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5e33798ba9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5e33799155 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5e3379a4fe in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5e2d7eda6d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f5e2d7ee49b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f5e2d7ee68c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f5e3379af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f5e3374488a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f5e33571fe3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f5e353d05c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#14 0x00007f5e33576c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f5e2f9516da in start_thread (arg=0x7f5e1c671700) at pthread_create.c:456
#16 0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f5e2526a700 (LWP 5888)):
#0  0x00007f5e32b6ed8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5e2d383c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f5e2d3858d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f5e27df4ed9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f5e33576c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5e2f9516da in start_thread (arg=0x7f5e2526a700) at pthread_create.c:456
#6  0x00007f5e32b7ad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f5e375c7440 (LWP 5887)):
[KCrash Handler]
#6  0x00007f5e33746821 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5e369cf469 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f5e369d8357 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f5e369d86e1 in QQuickItem::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f5e34cb035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f5e34cb7b11 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f5e337468a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f5e369cf469 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f5e369d8357 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f5e369d86e1 in QQuickItem::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f5e34cb035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f5e34cb7b11 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f5e337468a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f5e369cf469 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f5e369d8357 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f5e369d86e1 in QQuickItem::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f5e34cb035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f5e34cb7b11 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f5e337468a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f5e369cf469 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007f5e369d8357 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00007f5e369d86e1 in QQuickItem::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#28 0x00007f5e34cb035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f5e34cb7b11 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f5e337468a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f5e369eb143 in QQuickWindow::sendEvent(QQuickItem*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#32 0x00007f5e369eb58f in QQuickWindow::keyReleaseEvent(QKeyEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#33 0x00007f5e34528475 in QWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#34 0x00007f5e369f3245 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#35 0x00007f5e34cb035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f5e34cb7b11 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f5e337468a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f5e34518d18 in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#39 0x00007f5e3451e285 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#40 0x00007f5e344fc23b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#41 0x00007f5e27e2b830 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#42 0x00007f5e2d7ee377 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007f5e2d7ee5e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007f5e2d7ee68c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f5e3379af0f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#46 0x00007f5e3374488a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007f5e3374cffc in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x000055ee0bf5bb16 in ?? ()
#49 0x00007f5e32a923f1 in __libc_start_main (main=0x55ee0bf5b410, argc=3, argv=0x7ffe02dd4608, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe02dd45f8) at ../csu/libc-start.c:291
#50 0x000055ee0bf5bd5a in _start ()

Possible duplicates by query: bug 381973, bug 381892, bug 381814, bug 379811, bug 379757.

Reported using DrKonqi
Comment 1 Dan Leinir Turthra Jensen 2017-07-18 13:04:21 UTC 
The backtrace tells us this is a duplicate - technically the bug is not when you are installing things, but rather because you used the keyboard (this could even be an alt-tab). Thank you very much for the report, and for the lovely, full backtrace :)

*** This bug has been marked as a duplicate of bug 378339 ***