Bug 351933

Summary: Plasma Crash at startup
Product: [Plasma] plasmashell Reporter: Samuel Suther <s.suther>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bhush94, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.2.2   
Target Milestone: 1.0   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Samuel Suther 2015-08-29 11:56:27 UTC 
Application: plasmashell (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-26-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:
Appears dicectly after startup of Plasma. Don't have start manualy any Programm.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa51034f7c0 (LWP 3932))]

Thread 36 (Thread 0x7fa4fbef0700 (LWP 3934)):
#0  0x00007fa50b10e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa50d67bb72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fa50d67d64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fa4fe237099 in QXcbEventReader::run (this=0x2222400) at qxcbconnection.cpp:1105
#4  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x2222400) at thread/qthread_unix.cpp:337
#5  0x00007fa50a9956aa in start_thread (arg=0x7fa4fbef0700) at pthread_create.c:333
#6  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 35 (Thread 0x7fa4f9328700 (LWP 3951)):
#0  0x00007fa50785f7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781aeb1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4f00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4f9327de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x22f3d90) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4f9328700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 34 (Thread 0x7fa4e5d05700 (LWP 3972)):
#0  0x00007fa50785f7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa507819e5e in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781ad75 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4e00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4e5d04de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x2c69830) at thread/qthread_unix.cpp:337
#9  0x00007fa50a9956aa in start_thread (arg=0x7fa4e5d05700) at pthread_create.c:333
#10 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7fa4dfbbe700 (LWP 3989)):
#0  0x00007fa50785f789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781aea2 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4d80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4dfbbdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x2df3730) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4dfbbe700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7fa4debbd700 (LWP 3990)):
#0  0x00007fa50b10a49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa50785e2f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781a96c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781ae60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4d00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#6  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4debbcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x2eee940) at thread/qthread_unix.cpp:337
#10 0x00007fa50a9956aa in start_thread (arg=0x7fa4debbd700) at pthread_create.c:333
#11 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7fa4ddbbc700 (LWP 3991)):
#0  0x00007fa50b10e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa50781aebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4ddbbbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x2fb6c20) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4ddbbc700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7fa4dcadb700 (LWP 3992)):
#0  0x00007fa50781a803 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781ae60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4dcadade0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x30a0df0) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4dcadb700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7fa4cf7ff700 (LWP 3993)):
#0  0x00007fa50785f789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781a409 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781ade8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4cf7fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x3192c60) at thread/qthread_unix.cpp:337
#9  0x00007fa50a9956aa in start_thread (arg=0x7fa4cf7ff700) at pthread_create.c:333
#10 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7fa4ce7fe700 (LWP 3994)):
#0  unlock (this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:138
#1  ~QMutexLocker (this=<synthetic pointer>, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:132
#2  canWaitLocked (this=0x32c09d0) at ../../include/QtCore/5.4.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:244
#3  postEventSourcePrepare (s=0x7fa4bc0012d0, timeout=0x7fa4ce7fdc14) at kernel/qeventdispatcher_glib.cpp:254
#4  0x00007fa50781a3fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa50781ade8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4bc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#8  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4ce7fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#10 0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x32bbf20) at thread/qthread_unix.cpp:337
#12 0x00007fa50a9956aa in start_thread (arg=0x7fa4ce7fe700) at pthread_create.c:333
#13 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7fa4cd7cd700 (LWP 3995)):
#0  0x00007fa50b10e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa50781aebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4c00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4cd7ccde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x33b6320) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4cd7cd700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7fa4bbfff700 (LWP 3996)):
#0  __GI___pthread_getspecific (key=3) at pthread_getspecific.c:61
#1  0x00007fa507841e00 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afbd in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4b40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4bbffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x34b43f0) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4bbfff700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7fa4bad86700 (LWP 3997)):
#0  0x00007fa50781a3db in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781ade8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4ac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4bad85de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x35855d0) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4bad86700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7fa4b9c85700 (LWP 3998)):
#0  0x00007fa50b10e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa50781aebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4b00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4b9c84de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x3684c40) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4b9c85700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7fa4b8b84700 (LWP 3999)):
#0  0x00007fa50785f7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781ad6d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4a40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4b8b83de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x3771b20) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4b8b84700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7fa4ab7ff700 (LWP 4000)):
#0  0x00007fa50785f7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781a8b9 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781ae60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4a00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4ab7fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x3885110) at thread/qthread_unix.cpp:337
#9  0x00007fa50a9956aa in start_thread (arg=0x7fa4ab7ff700) at pthread_create.c:333
#10 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7fa4aa7fe700 (LWP 4001)):
#0  0x00007fa50b10e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa50781aebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4aa7fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x398c9a0) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4aa7fe700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7fa4a97fd700 (LWP 4002)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa50f499644 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fa50f499689 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fa50a9956aa in start_thread (arg=0x7fa4a97fd700) at pthread_create.c:333
#4  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7fa4a8efc700 (LWP 4003)):
#0  0x00007fa50785f7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781addb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa49c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4a8efbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x3a51480) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4a8efc700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fa4173ea700 (LWP 4004)):
#0  0x00007fa50785f7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781a6f9 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781ae37 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4173e9de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa4a840be55 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#8  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x25d2880) at thread/qthread_unix.cpp:337
#9  0x00007fa50a9956aa in start_thread (arg=0x7fa4173ea700) at pthread_create.c:333
#10 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fa416903700 (LWP 4005)):
#0  0x00007fa50ba26462 in timerSourceCheck (source=0x7fa408003070) at kernel/qeventdispatcher_glib.cpp:164
#1  0x00007fa50781a8c1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781ae60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa416902e00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x7fa410009050) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa416903700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fa415560700 (LWP 4007)):
#0  0x00007fa50785f7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781ad6d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa40c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa41555fde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x4029560) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa415560700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fa407b70700 (LWP 4008)):
#0  0x00007fa50781afc2 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa4000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#2  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa407b6fd90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#3  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#4  0x00007fa510002b56 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x40ca3e0) at thread/qthread_unix.cpp:337
#6  0x00007fa50a9956aa in start_thread (arg=0x7fa407b70700) at pthread_create.c:333
#7  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fa40736f700 (LWP 4009)):
#0  0x00007fa50785f789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781a8cc in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781ae60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3f80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa40736ede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x40ef590) at thread/qthread_unix.cpp:337
#9  0x00007fa50a9956aa in start_thread (arg=0x7fa40736f700) at pthread_create.c:333
#10 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fa4060e6700 (LWP 4010)):
#0  0x00007fa50b10e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa50781aebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa4060e5de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x42563d0) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa4060e6700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fa404fdd700 (LWP 4011)):
#0  0x00007fa507817edf in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781a39b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781ade8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3f00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa404fdcd90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa510002b56 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x437eb10) at thread/qthread_unix.cpp:337
#9  0x00007fa50a9956aa in start_thread (arg=0x7fa404fdd700) at pthread_create.c:333
#10 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fa3f67ff700 (LWP 4012)):
#0  0x00007fa50781a77d in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781ae60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3ec0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa3f67fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x57b7ce0) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa3f67ff700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fa3eb34c700 (LWP 4013)):
#0  0x00007fa50781aa0f in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781af20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa3eb34bde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x60815f0) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa3eb34c700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fa3ea2cb700 (LWP 4014)):
#0  0x00007fa50785f780 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781a409 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781ade8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa3ea2cade0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x33aee20) at thread/qthread_unix.cpp:337
#9  0x00007fa50a9956aa in start_thread (arg=0x7fa3ea2cb700) at pthread_create.c:333
#10 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fa3e91ca700 (LWP 4015)):
#0  0x00007fa50781a9f2 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781af20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3e00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa3e91c9de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x62513c0) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa3e91ca700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fa3dbfff700 (LWP 4016)):
#0  0x00007fa50785f789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781aa16 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781af20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa3dbffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x6388220) at thread/qthread_unix.cpp:337
#9  0x00007fa50a9956aa in start_thread (arg=0x7fa3dbfff700) at pthread_create.c:333
#10 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fa3dafbe700 (LWP 4017)):
#0  0x00007fa50785f7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781ae76 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa3dafbdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x6441830) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa3dafbe700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fa3d9ebd700 (LWP 4018)):
#0  __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:65
#1  0x00007fa50b10e8d2 in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007fa50781aebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3d00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa3d9ebcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x65418f0) at thread/qthread_unix.cpp:337
#9  0x00007fa50a9956aa in start_thread (arg=0x7fa3d9ebd700) at pthread_create.c:333
#10 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fa3d8dbc700 (LWP 4019)):
#0  0x00007fa50781a390 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa50781ade8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa3d8dbbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x6637b10) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa3d8dbc700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fa3c30b7700 (LWP 4028)):
#0  0x00007fa50b10e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa50781aebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3bc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa3c30b6dc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa3c94a4cf7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x6af00e0) at thread/qthread_unix.cpp:337
#8  0x00007fa50a9956aa in start_thread (arg=0x7fa3c30b7700) at pthread_create.c:333
#9  0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fa3c1edf700 (LWP 4029)):
#0  0x00007ffd4d5e6d18 in clock_gettime ()
#1  0x00007fa50b12838d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fa50b845cb6 in qt_clock_gettime (ts=0x7fa3c1edeb40, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:161
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:170
#5  0x00007fa50ba24639 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fa3b4002ed0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fa50ba24ba5 in QTimerInfoList::timerWait (this=0x7fa3b4002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0x00007fa50ba2603e in timerSourcePrepareHelper (timeout=0x7fa3c1edec14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fa3c1edec14) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007fa50781a3fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa50781ade8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fa50ba26c6c in QEventDispatcherGlib::processEvents (this=0x7fa3b40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7fa3c1edede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fa50b78ab44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007fa50d518f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fa50b78fb0e in QThreadPrivate::start (arg=0x6fcf610) at thread/qthread_unix.cpp:337
#17 0x00007fa50a9956aa in start_thread (arg=0x7fa3c1edf700) at pthread_create.c:333
#18 0x00007fa50b119eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa51034f7c0 (LWP 3932)):
[KCrash Handler]
#6  0x00007fa4ea7c2acf in upload_drawing_rect (brw=0x43de038) at ../../../../../../../src/mesa/drivers/dri/i965/brw_misc_state.c:57
#7  0x00007fa4ea7d3584 in brw_upload_state (brw=0x43de038) at ../../../../../../../src/mesa/drivers/dri/i965/brw_state_upload.c:648
#8  0x00007fa4ea762b44 in brw_try_draw_prims (indirect=<optimized out>, max_index=<optimized out>, min_index=<optimized out>, ib=<optimized out>, nr_prims=<optimized out>, prims=<optimized out>, arrays=<optimized out>, ctx=<optimized out>) at ../../../../../../../src/mesa/drivers/dri/i965/brw_draw.c:514
#9  brw_draw_prims (ctx=0x43de038, prims=0x7ffd4d4d1230, nr_prims=120210560, nr_prims@entry=1, ib=0x0, index_bounds_valid=2 '\002', index_bounds_valid@entry=1 '\001', min_index=0, max_index=2, unused_tfb_object=0x0, indirect=0x0) at ../../../../../../../src/mesa/drivers/dri/i965/brw_draw.c:607
#10 0x00007fa4ea7c0a93 in brw_draw_rectlist (ctx=ctx@entry=0x43de038, rect=rect@entry=0x7ffd4d4d12c0, num_instances=num_instances@entry=1) at ../../../../../../../src/mesa/drivers/dri/i965/brw_meta_fast_clear.c:201
#11 0x00007fa4ea7c12fc in brw_meta_fast_clear (brw=brw@entry=0x43de038, fb=fb@entry=0x72a4480, buffers=buffers@entry=34, partial_clear=partial_clear@entry=false) at ../../../../../../../src/mesa/drivers/dri/i965/brw_meta_fast_clear.c:578
#12 0x00007fa4ea751d08 in brw_clear (ctx=0x43de038, mask=34) at ../../../../../../../src/mesa/drivers/dri/i965/brw_clear.c:246
#13 0x00007fa510036a87 in QSGBatchRenderer::Renderer::renderBatches() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007fa51003c36a in QSGBatchRenderer::Renderer::render() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007fa510047456 in QSGRenderer::renderScene(QSGBindable const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007fa51004790b in QSGRenderer::renderScene(unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007fa51005631e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007fa5100a20cc in QQuickWindowPrivate::renderSceneGraph(QSize const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007fa510070e56 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007fa510071979 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007fa50c2d7b2c in QApplicationPrivate::notify_helper (this=0x220c420, receiver=0x24959d0, e=0x7ffd4d4d1a90) at kernel/qapplication.cpp:3720
#22 0x00007fa50c2dd000 in QApplication::notify (this=0x7ffd4d4d1e60, receiver=0x24959d0, e=0x7ffd4d4d1a90) at kernel/qapplication.cpp:3503
#23 0x00007fa50b9cdc2b in QCoreApplication::notifyInternal (this=0x7ffd4d4d1e60, receiver=0x24959d0, event=event@entry=0x7ffd4d4d1a90) at kernel/qcoreapplication.cpp:935
#24 0x00007fa50ba25ae5 in sendEvent (event=0x7ffd4d4d1a90, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#25 QTimerInfoList::activateTimers (this=0x224c5a0) at kernel/qtimerinfo_unix.cpp:635
#26 0x00007fa50ba25f61 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#27 0x00007fa50781ac3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007fa50781af20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007fa50781afcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007fa50ba26c57 in QEventDispatcherGlib::processEvents (this=0x223f500, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#31 0x00007fa50b9cb3e2 in QEventLoop::exec (this=this@entry=0x7ffd4d4d1ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#32 0x00007fa50b9d302c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#33 0x00007fa50bd1231c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#34 0x00007fa50c2d37a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#35 0x000000000042fd9b in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:158

Reported using DrKonqi
Comment 1 David Edmundson 2015-08-29 12:10:49 UTC 
>#12 0x00007fa4ea751d08 in brw_clear (ctx=0x43de038, mask=34) at ../../../../../../../src/mesa/drivers/dri/i965/brw_clear.c:246

This is a bug in the intel driver, please see comments in linked bug reports
Upgrading/downgrading mesa should fix it.

*** This bug has been marked as a duplicate of bug 349519 ***