Application: dolphin (15.12.3)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-21-generic x86_64
Distribution: Ubuntu Yakkety Yak (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
 --

Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7506c928c0 (LWP 31214))]

Thread 3 (Thread 0x7f750458c700 (LWP 31215)):
#0  0x00007f7519ad5e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f750e1fec62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f750e2008d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f75068de629 in QXcbEventReader::run (this=0x2260e60) at qxcbconnection.cpp:1253
#4  0x00007f75146a784e in QThreadPrivate::start (arg=0x2260e60) at thread/qthread_unix.cpp:331
#5  0x00007f7510e4f6fa in start_thread (arg=0x7f750458c700) at pthread_create.c:333
#6  0x00007f7519ae1b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f74f6a96700 (LWP 31216)):
#0  0x00007f7510307a40 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f75102c2ad1 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f75102c3297 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f75102c342c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f75148dea9b in QEventDispatcherGlib::processEvents (this=0x7f74f00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f7514885dea in QEventLoop::exec (this=this@entry=0x7f74f6a95d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f75146a28a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f75146a784e in QThreadPrivate::start (arg=0x260dda0) at thread/qthread_unix.cpp:331
#8  0x00007f7510e4f6fa in start_thread (arg=0x7f74f6a96700) at pthread_create.c:333
#9  0x00007f7519ae1b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f7506c928c0 (LWP 31214)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007f7514898fc7 in QMetaObject::invokeMethod (obj=0x285d3f0, member=0x7f75180e97e6 "next", type=88202096, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1464
#8  0x00007f75180dab99 in KDialogJobUiDelegate::Private::next() () from /usr/lib/x86_64-linux-gnu/libKF5JobWidgets.so.5
#9  0x00007f75148b7ea1 in QObject::event (this=0x285d3f0, e=<optimized out>) at kernel/qobject.cpp:1239
#10 0x00007f751538b05c in QApplicationPrivate::notify_helper (this=this@entry=0x22403d0, receiver=receiver@entry=0x285d3f0, e=e@entry=0x2b6a870) at kernel/qapplication.cpp:3716
#11 0x00007f7515390516 in QApplication::notify (this=0x7ffd0541e550, receiver=0x285d3f0, e=0x2b6a870) at kernel/qapplication.cpp:3499
#12 0x00007f751488862b in QCoreApplication::notifyInternal (this=0x7ffd0541e550, receiver=0x285d3f0, event=event@entry=0x2b6a870) at kernel/qcoreapplication.cpp:965
#13 0x00007f751488aa26 in QCoreApplication::sendEvent (event=0x2b6a870, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#14 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x223e870) at kernel/qcoreapplication.cpp:1593
#15 0x00007f751488af08 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#16 0x00007f75148de673 in postEventSourceDispatch (s=0x228b8c0) at kernel/qeventdispatcher_glib.cpp:271
#17 0x00007f75102c3127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f75102c3380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f75102c342c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f75148dea7f in QEventDispatcherGlib::processEvents (this=0x228a840, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#21 0x00007f7514885dea in QEventLoop::exec (this=this@entry=0x7ffd0541e420, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#22 0x00007f751488de8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#23 0x00007f7519e01e2b in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#24 0x00007f75199fb830 in __libc_start_main (main=0x400710 <main>, argc=1, argv=0x7ffd0541e6d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd0541e6c8) at ../csu/libc-start.c:291
#25 0x0000000000400749 in _start ()

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7506c928c0 (LWP 31214))]

Thread 3 (Thread 0x7f750458c700 (LWP 31215)):
#0  0x00007f7519ad5e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f750e1fec62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f750e2008d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f75068de629 in QXcbEventReader::run (this=0x2260e60) at qxcbconnection.cpp:1253
#4  0x00007f75146a784e in QThreadPrivate::start (arg=0x2260e60) at thread/qthread_unix.cpp:331
#5  0x00007f7510e4f6fa in start_thread (arg=0x7f750458c700) at pthread_create.c:333
#6  0x00007f7519ae1b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f74f6a96700 (LWP 31216)):
#0  0x00007f7510307a40 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f75102c2ad1 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f75102c3297 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f75102c342c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f75148dea9b in QEventDispatcherGlib::processEvents (this=0x7f74f00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f7514885dea in QEventLoop::exec (this=this@entry=0x7f74f6a95d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f75146a28a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f75146a784e in QThreadPrivate::start (arg=0x260dda0) at thread/qthread_unix.cpp:331
#8  0x00007f7510e4f6fa in start_thread (arg=0x7f74f6a96700) at pthread_create.c:333
#9  0x00007f7519ae1b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f7506c928c0 (LWP 31214)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007f7514898fc7 in QMetaObject::invokeMethod (obj=0x285d3f0, member=0x7f75180e97e6 "next", type=88202096, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1464
#8  0x00007f75180dab99 in KDialogJobUiDelegate::Private::next() () from /usr/lib/x86_64-linux-gnu/libKF5JobWidgets.so.5
#9  0x00007f75148b7ea1 in QObject::event (this=0x285d3f0, e=<optimized out>) at kernel/qobject.cpp:1239
#10 0x00007f751538b05c in QApplicationPrivate::notify_helper (this=this@entry=0x22403d0, receiver=receiver@entry=0x285d3f0, e=e@entry=0x2b6a870) at kernel/qapplication.cpp:3716
#11 0x00007f7515390516 in QApplication::notify (this=0x7ffd0541e550, receiver=0x285d3f0, e=0x2b6a870) at kernel/qapplication.cpp:3499
#12 0x00007f751488862b in QCoreApplication::notifyInternal (this=0x7ffd0541e550, receiver=0x285d3f0, event=event@entry=0x2b6a870) at kernel/qcoreapplication.cpp:965
#13 0x00007f751488aa26 in QCoreApplication::sendEvent (event=0x2b6a870, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#14 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x223e870) at kernel/qcoreapplication.cpp:1593
#15 0x00007f751488af08 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#16 0x00007f75148de673 in postEventSourceDispatch (s=0x228b8c0) at kernel/qeventdispatcher_glib.cpp:271
#17 0x00007f75102c3127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f75102c3380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f75102c342c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f75148dea7f in QEventDispatcherGlib::processEvents (this=0x228a840, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#21 0x00007f7514885dea in QEventLoop::exec (this=this@entry=0x7ffd0541e420, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#22 0x00007f751488de8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#23 0x00007f7519e01e2b in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#24 0x00007f75199fb830 in __libc_start_main (main=0x400710 <main>, argc=1, argv=0x7ffd0541e6d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd0541e6c8) at ../csu/libc-start.c:291
#25 0x0000000000400749 in _start ()

Possible duplicates by query: bug 360717, bug 359623, bug 359622, bug 358954, bug 358693.

Reported using DrKonqi