Bug 363421

Summary:	krunner crash/restart when starting iceweasel from alt-F2
Product:	[Plasma] krunner	Reporter:	Arthur Marsh <arthur.marsh>
Component:	general	Assignee:	Kai Uwe Broulik <kde>
Status:	RESOLVED NOT A BUG
Severity:	crash	CC:	matt
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.5.4
Target Milestone:	---
Platform:	Debian unstable
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Stack trace of crash, as generated by Dr Konqi

Description Arthur Marsh 2016-05-23 01:49:17 UTC

Application: krunner (5.5.4)

Qt Version: 5.5.1
Operating System: Linux 4.6.0+ x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
After restarting lxdm and the plasma session following library upgrades, krunner crashed when successfully starting iceweasel.

-- Backtrace:
Application: krunner (krunner), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7f3c06def7c0 (LWP 29246))]

Thread 12 (Thread 0x7f3c0672c700 (LWP 29248)):
#0  0x00000030004dfdcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x000000300380a382 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f3c0672bd00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x000000300380a382 in _xcb_conn_wait (c=c@entry=0x2337470, cond=cond@entry=0x23374b0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x000000300380bff7 in xcb_wait_for_event (c=0x2337470) at ../../src/xcb_in.c:693
#4  0x00007f3c06b8b789 in QXcbEventReader::run() (this=0x234a4c0) at qxcbconnection.cpp:1230
#5  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x234a4c0) at thread/qthread_unix.cpp:331
#6  0x0000003000c07454 in start_thread (arg=0x7f3c0672c700) at pthread_create.c:334
#7  0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f3bfd1d6700 (LWP 29253)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3c0491a693 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f3c04919db7 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x0000003000c07454 in start_thread (arg=0x7f3bfd1d6700) at pthread_create.c:334
#4  0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f3bfb6c0700 (LWP 29254)):
#0  0x00000030004dbdad in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x0000003002c8d740 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7f3bfb6bfbe0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x0000003002c8d740 in g_wakeup_acknowledge (wakeup=0x7f3c000015b0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gwakeup.c:210
#3  0x0000003002c49e84 in g_main_context_check (context=context@entry=0x7f3bf4000990, max_priority=2147483647, fds=fds@entry=0x7f3bf4003070, n_fds=n_fds@entry=1) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3632
#4  0x0000003002c4a340 in g_main_context_iterate (context=context@entry=0x7f3bf4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3837
#5  0x0000003002c4a4ac in g_main_context_iteration (context=0x7f3bf4000990, may_block=may_block@entry=1) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3901
#6  0x00000030176dca5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f3bf40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x0000003017683daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3bfb6bfde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00000030174a0864 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00000030556d5105 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x275b9c0) at thread/qthread_unix.cpp:331
#11 0x0000003000c07454 in start_thread (arg=0x7f3bfb6c0700) at pthread_create.c:334
#12 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f3bf11f6700 (LWP 29393)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x25be770) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x257ffe0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3bf94c1dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f3bf94c5fe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f3bf94c6042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f3bf94c3e53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x2fe0a80) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f3bf11f6700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f3bebfff700 (LWP 29394)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x25be770) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x257ffe0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3bf94c1dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f3bf94c5fe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f3bf94c6042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f3bf94c3e53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x2fd88c0) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f3bebfff700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f3bf09f5700 (LWP 29395)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x25be770) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x257ffe0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3bf94c1dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f3bf94c5fe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f3bf94c6042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f3bf94c3e53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x2fcefa0) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f3bf09f5700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f3beb7fe700 (LWP 29396)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x25be770) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x257ffe0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3bf94c1dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f3bf94c5fe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f3bf94c6042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f3bf94c3e53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x2fe1680) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f3beb7fe700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f3beaffd700 (LWP 29397)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x25be770) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x257ffe0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3bf94c1dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f3bf94c5fe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f3bf94c6042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f3bf94c3e53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x2fe17d0) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f3beaffd700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f3bea7fc700 (LWP 29398)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x25be770) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x257ffe0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3bf94c1dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f3bf94c5fe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f3bf94c6042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f3bf94c3e53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x7f3be4002f90) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f3bea7fc700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f3be9ffb700 (LWP 29399)):
[KCrash Handler]
#6  0x00000030004910b8 in __memcpy_sse2_unaligned () at ../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:167
#7  0x00000030ad62b7ea in Baloo::PostingCodec::decode(QByteArray const&) () at /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#8  0x00000030ad61808e in  () at /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#9  0x00000030ad618151 in Baloo::PostingDB::iter(QByteArray const&) () at /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#10 0x00000030ad6210db in Baloo::Transaction::postingIterator(Baloo::EngineQuery const&) const () at /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#11 0x00000030ac61fe9d in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#12 0x00000030ac62002e in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#13 0x00000030ac62102c in  () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#14 0x00000030ac60fff2 in Baloo::Query::exec() () at /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#15 0x00007f3bf1a34f2f in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#16 0x00007f3bf1a35879 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_baloosearchrunner.so
#17 0x00007f3bf96e1f40 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) (this=0x30cfbb0, localContext=...) at ../../src/abstractrunner.cpp:131
#18 0x00007f3bf94c5790 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007f3bf94c42e0 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#20 0x00007f3bf94c3d8a in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#21 0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x7f3bec002d90) at thread/qthread_unix.cpp:331
#22 0x0000003000c07454 in start_thread (arg=0x7f3be9ffb700) at pthread_create.c:334
#23 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f3be97fa700 (LWP 29400)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x25be770) at thread/qwaitcondition_unix.cpp:136
#2  0x00000030174a6aab in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x257ffe0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f3bf94c1dbf in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#4  0x00007f3bf94c5fe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f3bf94c6042 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f3bf94c0f8d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f3bf94c3e53 in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00000030174a580e in QThreadPrivate::start(void*) (arg=0x2fe1760) at thread/qthread_unix.cpp:331
#10 0x0000003000c07454 in start_thread (arg=0x7f3be97fa700) at pthread_create.c:334
#11 0x00000030004e8e5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f3c06def7c0 (LWP 29246)):
#0  0x0000003000c0d04f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000000300380a5d9 in _xcb_conn_wait (c=c@entry=0x2337470, cond=cond@entry=0x7fffbcffd0d0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:427
#2  0x000000300380bd37 in wait_for_reply (c=c@entry=0x2337470, request=1081, e=e@entry=0x0) at ../../src/xcb_in.c:516
#3  0x000000300380be41 in xcb_wait_for_reply (c=0x2337470, request=1081, e=0x0) at ../../src/xcb_in.c:546
#4  0x00007f3bfc5889d9 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#5  0x000000309d8246af in  () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#6  0x000000309d8263c3 in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#7  0x0000000000409e8f in View::event(QEvent*) ()
#8  0x000000301db5affc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x2328d10, receiver=receiver@entry=0x7fffbd003730, e=e@entry=0x7fffbcffd580) at kernel/qapplication.cpp:3716
#9  0x000000301db604b6 in QApplication::notify(QObject*, QEvent*) (this=0x7fffbd0036c0, receiver=0x7fffbd003730, e=0x7fffbcffd580) at kernel/qapplication.cpp:3499
#10 0x00000030176865eb in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7fffbd0036c0, receiver=receiver@entry=0x7fffbd003730, event=event@entry=0x7fffbcffd580) at kernel/qcoreapplication.cpp:965
#11 0x000000301b8f979f in QWindow::setVisible(bool) (event=0x7fffbcffd580, receiver=0x7fffbd003730) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#12 0x000000301b8f979f in QWindow::setVisible(bool) (this=0x7fffbd003730, visible=false) at kernel/qwindow.cpp:520
#13 0x000000309d822420 in PlasmaQuick::Dialog::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#14 0x000000309d8253f3 in  () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#15 0x000000309d826b6b in PlasmaQuick::Dialog::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#16 0x000000000040a2c5 in View::qt_metacall(QMetaObject::Call, int, void**) ()
#17 0x00000030556512b0 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x000000305561dfdd in QV4::QObjectWrapper::setProperty(QObject*, QV4::ExecutionContext*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x000000305561e658 in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x000000305561e792 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#21 0x000000305562dcf2 in QV4::Runtime::setProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#22 0x00007f3bf9152545 in  ()
#23 0x0000000000000000 in  ()

Reported using DrKonqi

Comment 1 Matthew Cline 2016-06-24 01:18:27 UTC

Created attachment 99671 [details]
Stack trace of crash, as generated by Dr Konqi

I've also been intermittently getting this crash, though only once did Dr Konqi catch it and generate a bug report.

Additional info: in .xsession-errors, right before the KCrash text about krunner is a series of XCB errors about "BadWindow" and "BadDrawable"; might be related.

(The automatic bug reporter was itself bugged in respect to attaching a stack trace to existing bugs, so I'm doing it manually.)