Bug 349000

Summary: Plasma crashes regularly Plasma with Segmentation fault (11)
Product: [Plasma] plasmashell Reporter: ggmahyar
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bhush94, mklapetek, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.3.1   
Target Milestone: 1.0   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description ggmahyar 2015-06-10 19:53:53 UTC 
Application: plasmashell (5.3.1)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-18-generic i686
Distribution: Ubuntu 15.04

-- Information about the crash:
Plasma crashes and restarts every few minutes (sometimes every few seconds). By closing the running applications one after another, it sometimes stops. Restarting network-manager.service and rebooting has the same effect. Ocassionaly the crash and restart goes away (maybe for some hours or days) and suddenly come back. Oddly, even updating seems to trigger something positively or negatively.

The only error seen in log-files:
/var/log/apport.og

ERROR: apport (pid 1566) Wed Jun 10 19:08:33 2015: debug: session gdbus call: 
ERROR: apport (pid 1566) Wed Jun 10 19:08:53 2015: wrote report /var/crash/_usr_bin_kded5.1000.crash
ERROR: apport (pid 1739) Wed Jun 10 19:08:55 2015: called for pid 1508, signal 6, core limit 0
ERROR: apport (pid 1739) Wed Jun 10 19:08:55 2015: executable: /usr/bin/ksplashqml (command line "ksplashqml Breeze --pid")
ERROR: apport (pid 1739) Wed Jun 10 19:08:55 2015: gdbus call error: Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

ERROR: apport (pid 1739) Wed Jun 10 19:08:55 2015: debug: session gdbus call: 
ERROR: apport (pid 1739) Wed Jun 10 19:08:55 2015: apport: report /var/crash/_usr_bin_ksplashqml.1000.crash already exists and unseen, doing nothing to avoid disk usage DoS

System Info: 

Kubuntu Version: 15.04 (32 bit)
Plasma Version: 5.3.1
Qt Version: 5.4.1
Kernel Version: 3.19.0-18-generic
nVidia GeForce G 105M / OpenGL 3.3.0 NVIDIA 340.76

If I could add more information to this report, please let me knwo.

Regards
Mahyar

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xafa79740 (LWP 3963))]

Thread 37 (Thread 0xaf4b1b40 (LWP 3966)):
#0  0xb77adbe0 in __kernel_vsyscall ()
#1  0xb4ea13db in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb699d3a8 in ?? () from /usr/lib/i386-linux-gnu/libxcb.so.1
#3  0xb699f394 in xcb_wait_for_event () from /usr/lib/i386-linux-gnu/libxcb.so.1
#4  0xaf65b7d3 in QXcbEventReader::run (this=0x8d2bf98) at qxcbconnection.cpp:1105
#5  0xb50fc7eb in QThreadPrivate::start (arg=0x8d2bf98) at thread/qthread_unix.cpp:337
#6  0xb4bad1aa in start_thread (arg=0xaf4b1b40) at pthread_create.c:333
#7  0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 36 (Thread 0xade4db40 (LWP 3970)):
#0  0xb77ad996 in __vdso_clock_gettime ()
#1  0xb4eb9740 in __GI___clock_gettime (clock_id=1, tp=0xade4d004) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb519d498 in qt_clock_gettime (ts=0xade4d004, 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  0xb5381321 in QTimerInfoList::updateCurrentTime (this=0xad50269c) at kernel/qtimerinfo_unix.cpp:84
#6  0xb5381834 in QTimerInfoList::timerWait (this=0xad50269c, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0xb5382db9 in timerSourcePrepareHelper (timeout=0xade4d0f8, src=0xad502668) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=0xad502668, timeout=0xade4d0f8) at kernel/qeventdispatcher_glib.cpp:160
#9  0xb44ee41b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#12 0xb53839fc in QEventDispatcherGlib::processEvents (this=0xad500468, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0xb5324d93 in QEventLoop::processEvents (this=0xade4d294, flags=...) at kernel/qeventloop.cpp:128
#14 0xb53251fa in QEventLoop::exec (this=0xade4d294, flags=...) at kernel/qeventloop.cpp:204
#15 0xb50f740d in QThread::exec (this=0x8dc0798) at thread/qthread.cpp:503
#16 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#17 0xb50fc7eb in QThreadPrivate::start (arg=0x8dc0798) at thread/qthread_unix.cpp:337
#18 0xb4bad1aa in start_thread (arg=0xade4db40) at pthread_create.c:333
#19 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 35 (Thread 0xab185b40 (LWP 3971)):
#0  0xb77adbe0 in __kernel_vsyscall ()
#1  0xb4ea13db in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb44fe120 in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef014 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xaa800468, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0xb5324d93 in QEventLoop::processEvents (this=0xab185294, flags=...) at kernel/qeventloop.cpp:128
#7  0xb53251fa in QEventLoop::exec (this=0xab185294, flags=...) at kernel/qeventloop.cpp:204
#8  0xb50f740d in QThread::exec (this=0x8d949a8) at thread/qthread.cpp:503
#9  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#10 0xb50fc7eb in QThreadPrivate::start (arg=0x8d949a8) at thread/qthread_unix.cpp:337
#11 0xb4bad1aa in start_thread (arg=0xab185b40) at pthread_create.c:333
#12 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 34 (Thread 0xa974eb40 (LWP 3975)):
#0  0xb77adbe0 in __kernel_vsyscall ()
#1  0xb4ea13db in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb44fe120 in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef014 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xaa80dce8, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0xb5324d93 in QEventLoop::processEvents (this=0xa974e294, flags=...) at kernel/qeventloop.cpp:128
#7  0xb53251fa in QEventLoop::exec (this=0xa974e294, flags=...) at kernel/qeventloop.cpp:204
#8  0xb50f740d in QThread::exec (this=0x905f918) at thread/qthread.cpp:503
#9  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#10 0xb50fc7eb in QThreadPrivate::start (arg=0x905f918) at thread/qthread_unix.cpp:337
#11 0xb4bad1aa in start_thread (arg=0xa974eb40) at pthread_create.c:333
#12 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 33 (Thread 0xa86cdb40 (LWP 3976)):
#0  0xb77ad996 in __vdso_clock_gettime ()
#1  0xb4eb9740 in __GI___clock_gettime (clock_id=1, tp=0xa86cd004) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb519d498 in qt_clock_gettime (ts=0xa86cd004, 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  0xb5381321 in QTimerInfoList::updateCurrentTime (this=0xad57c7ec) at kernel/qtimerinfo_unix.cpp:84
#6  0xb5381834 in QTimerInfoList::timerWait (this=0xad57c7ec, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0xb5382db9 in timerSourcePrepareHelper (timeout=0xa86cd0f8, src=0xad57c7b8) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=0xad57c7b8, timeout=0xa86cd0f8) at kernel/qeventdispatcher_glib.cpp:160
#9  0xb44ee41b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#12 0xb53839fc in QEventDispatcherGlib::processEvents (this=0xad554768, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0xb5324d93 in QEventLoop::processEvents (this=0xa86cd294, flags=...) at kernel/qeventloop.cpp:128
#14 0xb53251fa in QEventLoop::exec (this=0xa86cd294, flags=...) at kernel/qeventloop.cpp:204
#15 0xb50f740d in QThread::exec (this=0x9111658) at thread/qthread.cpp:503
#16 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#17 0xb50fc7eb in QThreadPrivate::start (arg=0x9111658) at thread/qthread_unix.cpp:337
#18 0xb4bad1aa in start_thread (arg=0xa86cdb40) at pthread_create.c:333
#19 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 32 (Thread 0xa762cb40 (LWP 3977)):
#0  __libc_disable_asynccancel (oldtype=2) at ../nptl/cancellation.c:82
#1  0xb4ea13e4 in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb44fe120 in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef014 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xaeb03668, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0xb5324d93 in QEventLoop::processEvents (this=0xa762c294, flags=...) at kernel/qeventloop.cpp:128
#7  0xb53251fa in QEventLoop::exec (this=0xa762c294, flags=...) at kernel/qeventloop.cpp:204
#8  0xb50f740d in QThread::exec (this=0x9170eb0) at thread/qthread.cpp:503
#9  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#10 0xb50fc7eb in QThreadPrivate::start (arg=0x9170eb0) at thread/qthread_unix.cpp:337
#11 0xb4bad1aa in start_thread (arg=0xa762cb40) at pthread_create.c:333
#12 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 31 (Thread 0xa658bb40 (LWP 3978)):
#0  0xb77ad996 in __vdso_clock_gettime ()
#1  0xb4eb9740 in __GI___clock_gettime (clock_id=1, tp=0xa658b004) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb519d498 in qt_clock_gettime (ts=0xa658b004, 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  0xb5381321 in QTimerInfoList::updateCurrentTime (this=0x9222dec) at kernel/qtimerinfo_unix.cpp:84
#6  0xb5381834 in QTimerInfoList::timerWait (this=0x9222dec, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0xb5382db9 in timerSourcePrepareHelper (timeout=0xa658b0f8, src=0x9222db8) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=0x9222db8, timeout=0xa658b0f8) at kernel/qeventdispatcher_glib.cpp:160
#9  0xb44ee41b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#12 0xb53839fc in QEventDispatcherGlib::processEvents (this=0x91fac28, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0xb5324d93 in QEventLoop::processEvents (this=0xa658b294, flags=...) at kernel/qeventloop.cpp:128
#14 0xb53251fa in QEventLoop::exec (this=0xa658b294, flags=...) at kernel/qeventloop.cpp:204
#15 0xb50f740d in QThread::exec (this=0x9223530) at thread/qthread.cpp:503
#16 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#17 0xb50fc7eb in QThreadPrivate::start (arg=0x9223530) at thread/qthread_unix.cpp:337
#18 0xb4bad1aa in start_thread (arg=0xa658bb40) at pthread_create.c:333
#19 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 30 (Thread 0xa54eab40 (LWP 3979)):
#0  0xb4534530 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44eea82 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xaa80dc68, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0xb5324d93 in QEventLoop::processEvents (this=0xa54ea294, flags=...) at kernel/qeventloop.cpp:128
#6  0xb53251fa in QEventLoop::exec (this=0xa54ea294, flags=...) at kernel/qeventloop.cpp:204
#7  0xb50f740d in QThread::exec (this=0x92ad3f0) at thread/qthread.cpp:503
#8  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#9  0xb50fc7eb in QThreadPrivate::start (arg=0x92ad3f0) at thread/qthread_unix.cpp:337
#10 0xb4bad1aa in start_thread (arg=0xa54eab40) at pthread_create.c:333
#11 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 29 (Thread 0xa4449b40 (LWP 3980)):
#0  0xb44eeb5e in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44ef089 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xad5b40c8, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0xb5324d93 in QEventLoop::processEvents (this=0xa4449294, flags=...) at kernel/qeventloop.cpp:128
#5  0xb53251fa in QEventLoop::exec (this=0xa4449294, flags=...) at kernel/qeventloop.cpp:204
#6  0xb50f740d in QThread::exec (this=0x93110e8) at thread/qthread.cpp:503
#7  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#8  0xb50fc7eb in QThreadPrivate::start (arg=0x93110e8) at thread/qthread_unix.cpp:337
#9  0xb4bad1aa in start_thread (arg=0xa4449b40) at pthread_create.c:333
#10 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 28 (Thread 0xa33a8b40 (LWP 3981)):
#0  0xb50f43bf in testAndSetRelaxed<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=0x1, _q_value=@0x93c2434: 0x0) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86.h:259
#1  testAndSetRelease<QMutexData*, QMutexData*> (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=0x1, _q_value=@0x93c2434: 0x0) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:175
#2  testAndSetRelease (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=0x1, this=0x93c2434) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:272
#3  fastTryUnlock (current=<synthetic pointer>, this=0x93c2434) at thread/qmutex.h:85
#4  QMutex::unlock (this=0x93c2434) at thread/qmutex.cpp:264
#5  0xb5382f54 in unlock (this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:138
#6  ~QMutexLocker (this=<synthetic pointer>, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:132
#7  canWaitLocked (this=<optimized out>) at ../../include/QtCore/5.4.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:244
#8  postEventSourcePrepare (s=0xaeb05d18, timeout=0xa33a80f8) at kernel/qeventdispatcher_glib.cpp:254
#9  0xb44ee41b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#12 0xb53839fc in QEventDispatcherGlib::processEvents (this=0xaeb03658, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0xb5324d93 in QEventLoop::processEvents (this=0xa33a8294, flags=...) at kernel/qeventloop.cpp:128
#14 0xb53251fa in QEventLoop::exec (this=0xa33a8294, flags=...) at kernel/qeventloop.cpp:204
#15 0xb50f740d in QThread::exec (this=0x93c1f20) at thread/qthread.cpp:503
#16 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#17 0xb50fc7eb in QThreadPrivate::start (arg=0x93c1f20) at thread/qthread_unix.cpp:337
#18 0xb4bad1aa in start_thread (arg=0xa33a8b40) at pthread_create.c:333
#19 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 27 (Thread 0xa2307b40 (LWP 3982)):
#0  0xb44eefc4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x942b990, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0xb5324d93 in QEventLoop::processEvents (this=0xa2307294, flags=...) at kernel/qeventloop.cpp:128
#4  0xb53251fa in QEventLoop::exec (this=0xa2307294, flags=...) at kernel/qeventloop.cpp:204
#5  0xb50f740d in QThread::exec (this=0x9425130) at thread/qthread.cpp:503
#6  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#7  0xb50fc7eb in QThreadPrivate::start (arg=0x9425130) at thread/qthread_unix.cpp:337
#8  0xb4bad1aa in start_thread (arg=0xa2307b40) at pthread_create.c:333
#9  0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 26 (Thread 0xa1266b40 (LWP 3983)):
#0  0xb4535a58 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44ee95e in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xaa80dde0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0xb5324d93 in QEventLoop::processEvents (this=0xa1266294, flags=...) at kernel/qeventloop.cpp:128
#6  0xb53251fa in QEventLoop::exec (this=0xa1266294, flags=...) at kernel/qeventloop.cpp:204
#7  0xb50f740d in QThread::exec (this=0x94d7140) at thread/qthread.cpp:503
#8  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#9  0xb50fc7eb in QThreadPrivate::start (arg=0x94d7140) at thread/qthread_unix.cpp:337
#10 0xb4bad1aa in start_thread (arg=0xa1266b40) at pthread_create.c:333
#11 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 25 (Thread 0xa01c5b40 (LWP 3984)):
#0  0xb44ebcf4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44ee3ab in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xad58cba8, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0xb5324d93 in QEventLoop::processEvents (this=0xa01c5294, flags=...) at kernel/qeventloop.cpp:128
#6  0xb53251fa in QEventLoop::exec (this=0xa01c5294, flags=...) at kernel/qeventloop.cpp:204
#7  0xb50f740d in QThread::exec (this=0x9533eb0) at thread/qthread.cpp:503
#8  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#9  0xb50fc7eb in QThreadPrivate::start (arg=0x9533eb0) at thread/qthread_unix.cpp:337
#10 0xb4bad1aa in start_thread (arg=0xa01c5b40) at pthread_create.c:333
#11 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 24 (Thread 0x9f0c0b40 (LWP 3985)):
#0  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xaeb07a18, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0xb5324d93 in QEventLoop::processEvents (this=0x9f0c0294, flags=...) at kernel/qeventloop.cpp:128
#4  0xb53251fa in QEventLoop::exec (this=0x9f0c0294, flags=...) at kernel/qeventloop.cpp:204
#5  0xb50f740d in QThread::exec (this=0x95f6f58) at thread/qthread.cpp:503
#6  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#7  0xb50fc7eb in QThreadPrivate::start (arg=0x95f6f58) at thread/qthread_unix.cpp:337
#8  0xb4bad1aa in start_thread (arg=0x9f0c0b40) at pthread_create.c:333
#9  0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 23 (Thread 0x9e02eb40 (LWP 3986)):
#0  0xb77adbe0 in __kernel_vsyscall ()
#1  0xb4bb225c in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb4eb8cf6 in __pthread_cond_wait (cond=0xb713b8f0, mutex=0xb713b8d8) at forward.c:149
#3  0xb6ff9784 in ?? () from /usr/lib/i386-linux-gnu/libQt5Script.so.5
#4  0xb6ff97cc in ?? () from /usr/lib/i386-linux-gnu/libQt5Script.so.5
#5  0xb4bad1aa in start_thread (arg=0x9e02eb40) at pthread_create.c:333
#6  0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 22 (Thread 0x9d705b40 (LWP 3987)):
#0  0xb5381819 in QTimerInfoList::timerWait (this=0x965bfac, tm=...) at kernel/qtimerinfo_unix.cpp:378
#1  0xb5382db9 in timerSourcePrepareHelper (timeout=0x9d7050f8, src=0x965bf78) at kernel/qeventdispatcher_glib.cpp:127
#2  timerSourcePrepare (source=0x965bf78, timeout=0x9d7050f8) at kernel/qeventdispatcher_glib.cpp:160
#3  0xb44ee41b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x9652c98, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0xb5324d93 in QEventLoop::processEvents (this=0x9d705294, flags=...) at kernel/qeventloop.cpp:128
#8  0xb53251fa in QEventLoop::exec (this=0x9d705294, flags=...) at kernel/qeventloop.cpp:204
#9  0xb50f740d in QThread::exec (this=0x965c888) at thread/qthread.cpp:503
#10 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#11 0xb50fc7eb in QThreadPrivate::start (arg=0x965c888) at thread/qthread_unix.cpp:337
#12 0xb4bad1aa in start_thread (arg=0x9d705b40) at pthread_create.c:333
#13 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 21 (Thread 0x9b963b40 (LWP 3988)):
#0  0xb4535a1d in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44eeef9 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xaa80dbe8, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0xb5324d93 in QEventLoop::processEvents (this=0x9b963294, flags=...) at kernel/qeventloop.cpp:128
#5  0xb53251fa in QEventLoop::exec (this=0x9b963294, flags=...) at kernel/qeventloop.cpp:204
#6  0xb50f740d in QThread::exec (this=0x8db5d68) at thread/qthread.cpp:503
#7  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#8  0xb50fc7eb in QThreadPrivate::start (arg=0x8db5d68) at thread/qthread_unix.cpp:337
#9  0xb4bad1aa in start_thread (arg=0x9b963b40) at pthread_create.c:333
#10 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 20 (Thread 0x9a79eb40 (LWP 3995)):
#0  0xb44ee3fa in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xad5a4fd0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0xb5324d93 in QEventLoop::processEvents (this=0x9a79e254, flags=...) at kernel/qeventloop.cpp:128
#5  0xb53251fa in QEventLoop::exec (this=0x9a79e254, flags=...) at kernel/qeventloop.cpp:204
#6  0xb50f740d in QThread::exec (this=0x9891b80) at thread/qthread.cpp:503
#7  0xb7411019 in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#8  0xb50fc7eb in QThreadPrivate::start (arg=0x9891b80) at thread/qthread_unix.cpp:337
#9  0xb4bad1aa in start_thread (arg=0x9a79eb40) at pthread_create.c:333
#10 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 19 (Thread 0x99711b40 (LWP 3999)):
#0  0xb77adbe0 in __kernel_vsyscall ()
#1  0xb4bb225c in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb4eb8cf6 in __pthread_cond_wait (cond=0x98a7b40, mutex=0x98a7b28) at forward.c:149
#3  0xb50fd86c in wait (time=<optimized out>, this=<optimized out>) at thread/qwaitcondition_unix.cpp:128
#4  QWaitCondition::wait (this=0x98a7b28, mutex=0x98a83f0, time=4294967295) at thread/qwaitcondition_unix.cpp:200
#5  0xb7486c3e in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#6  0xb7487047 in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#7  0xb50fc7eb in QThreadPrivate::start (arg=0x98a83a0) at thread/qthread_unix.cpp:337
#8  0xb4bad1aa in start_thread (arg=0x99711b40) at pthread_create.c:333
#9  0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 18 (Thread 0x97d0fb40 (LWP 4000)):
#0  0xb77ad996 in __vdso_clock_gettime ()
#1  0xb4eb9740 in __GI___clock_gettime (clock_id=1, tp=0x97d0f004) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb519d498 in qt_clock_gettime (ts=0x97d0f004, 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  0xb5381321 in QTimerInfoList::updateCurrentTime (this=0x8d947cc) at kernel/qtimerinfo_unix.cpp:84
#6  0xb5381834 in QTimerInfoList::timerWait (this=0x8d947cc, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0xb5382db9 in timerSourcePrepareHelper (timeout=0x97d0f0f8, src=0x8d94798) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=0x8d94798, timeout=0x97d0f0f8) at kernel/qeventdispatcher_glib.cpp:160
#9  0xb44ee41b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#12 0xb53839fc in QEventDispatcherGlib::processEvents (this=0x95d4850, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0xb5324d93 in QEventLoop::processEvents (this=0x97d0f294, flags=...) at kernel/qeventloop.cpp:128
#14 0xb53251fa in QEventLoop::exec (this=0x97d0f294, flags=...) at kernel/qeventloop.cpp:204
#15 0xb50f740d in QThread::exec (this=0x8d98188) at thread/qthread.cpp:503
#16 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#17 0xb50fc7eb in QThreadPrivate::start (arg=0x8d98188) at thread/qthread_unix.cpp:337
#18 0xb4bad1aa in start_thread (arg=0x97d0fb40) at pthread_create.c:333
#19 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 17 (Thread 0x959bfb40 (LWP 4028)):
#0  0xb4535a1d in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44eeb48 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44ef089 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x96599330, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0xb5324d93 in QEventLoop::processEvents (this=0x959bf294, flags=...) at kernel/qeventloop.cpp:128
#6  0xb53251fa in QEventLoop::exec (this=0x959bf294, flags=...) at kernel/qeventloop.cpp:204
#7  0xb50f740d in QThread::exec (this=0x9d042a0) at thread/qthread.cpp:503
#8  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#9  0xb50fc7eb in QThreadPrivate::start (arg=0x9d042a0) at thread/qthread_unix.cpp:337
#10 0xb4bad1aa in start_thread (arg=0x959bfb40) at pthread_create.c:333
#11 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 16 (Thread 0x9491eb40 (LWP 4029)):
#0  0xb44ebcd1 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44ee87b in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x96c46758, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0xb5324d93 in QEventLoop::processEvents (this=0x9491e294, flags=...) at kernel/qeventloop.cpp:128
#6  0xb53251fa in QEventLoop::exec (this=0x9491e294, flags=...) at kernel/qeventloop.cpp:204
#7  0xb50f740d in QThread::exec (this=0x9d96810) at thread/qthread.cpp:503
#8  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#9  0xb50fc7eb in QThreadPrivate::start (arg=0x9d96810) at thread/qthread_unix.cpp:337
#10 0xb4bad1aa in start_thread (arg=0x9491eb40) at pthread_create.c:333
#11 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 15 (Thread 0x9387db40 (LWP 4030)):
#0  0xb4e9b787 in read () at ../sysdeps/unix/syscall-template.S:82
#1  0xb3a6b54c in ?? () from /usr/lib/nvidia-340/tls/libnvidia-tls.so.340.76
#2  0xb4534515 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44eea82 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x962d91c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0xb5324d93 in QEventLoop::processEvents (this=0x9387d294, flags=...) at kernel/qeventloop.cpp:128
#8  0xb53251fa in QEventLoop::exec (this=0x9387d294, flags=...) at kernel/qeventloop.cpp:204
#9  0xb50f740d in QThread::exec (this=0x9e31d58) at thread/qthread.cpp:503
#10 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#11 0xb50fc7eb in QThreadPrivate::start (arg=0x9e31d58) at thread/qthread_unix.cpp:337
#12 0xb4bad1aa in start_thread (arg=0x9387db40) at pthread_create.c:333
#13 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 14 (Thread 0x927dcb40 (LWP 4031)):
#0  0xb44ebcc0 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44ee3ab in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x9ea7498, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0xb5324d93 in QEventLoop::processEvents (this=0x927dc294, flags=...) at kernel/qeventloop.cpp:128
#6  0xb53251fa in QEventLoop::exec (this=0x927dc294, flags=...) at kernel/qeventloop.cpp:204
#7  0xb50f740d in QThread::exec (this=0x9ea7128) at thread/qthread.cpp:503
#8  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#9  0xb50fc7eb in QThreadPrivate::start (arg=0x9ea7128) at thread/qthread_unix.cpp:337
#10 0xb4bad1aa in start_thread (arg=0x927dcb40) at pthread_create.c:333
#11 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 13 (Thread 0x91733b40 (LWP 4033)):
#0  0xb44ee918 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xaa854a88, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0xb5324d93 in QEventLoop::processEvents (this=0x91733294, flags=...) at kernel/qeventloop.cpp:128
#5  0xb53251fa in QEventLoop::exec (this=0x91733294, flags=...) at kernel/qeventloop.cpp:204
#6  0xb50f740d in QThread::exec (this=0x9f4b368) at thread/qthread.cpp:503
#7  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#8  0xb50fc7eb in QThreadPrivate::start (arg=0x9f4b368) at thread/qthread_unix.cpp:337
#9  0xb4bad1aa in start_thread (arg=0x91733b40) at pthread_create.c:333
#10 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 12 (Thread 0x90692b40 (LWP 4034)):
#0  0xb44ee975 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x96ce1ee8, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0xb5324d93 in QEventLoop::processEvents (this=0x90692294, flags=...) at kernel/qeventloop.cpp:128
#5  0xb53251fa in QEventLoop::exec (this=0x90692294, flags=...) at kernel/qeventloop.cpp:204
#6  0xb50f740d in QThread::exec (this=0x9fbd6c8) at thread/qthread.cpp:503
#7  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#8  0xb50fc7eb in QThreadPrivate::start (arg=0x9fbd6c8) at thread/qthread_unix.cpp:337
#9  0xb4bad1aa in start_thread (arg=0x90692b40) at pthread_create.c:333
#10 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 11 (Thread 0x8f5f1b40 (LWP 4035)):
#0  0xb44ee975 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x9620d4e0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0xb5324d93 in QEventLoop::processEvents (this=0x8f5f1294, flags=...) at kernel/qeventloop.cpp:128
#5  0xb53251fa in QEventLoop::exec (this=0x8f5f1294, flags=...) at kernel/qeventloop.cpp:204
#6  0xb50f740d in QThread::exec (this=0xa04c070) at thread/qthread.cpp:503
#7  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#8  0xb50fc7eb in QThreadPrivate::start (arg=0xa04c070) at thread/qthread_unix.cpp:337
#9  0xb4bad1aa in start_thread (arg=0x8f5f1b40) at pthread_create.c:333
#10 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 10 (Thread 0x8e54fb40 (LWP 4036)):
#0  0xb77ad996 in __vdso_clock_gettime ()
#1  0xb4eb9740 in __GI___clock_gettime (clock_id=1, tp=0x8e54f004) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb519d498 in qt_clock_gettime (ts=0x8e54f004, 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  0xb5381321 in QTimerInfoList::updateCurrentTime (this=0xa0cd0b4) at kernel/qtimerinfo_unix.cpp:84
#6  0xb5381834 in QTimerInfoList::timerWait (this=0xa0cd0b4, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0xb5382db9 in timerSourcePrepareHelper (timeout=0x8e54f0f8, src=0xa0cd080) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=0xa0cd080, timeout=0x8e54f0f8) at kernel/qeventdispatcher_glib.cpp:160
#9  0xb44ee41b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#12 0xb53839fc in QEventDispatcherGlib::processEvents (this=0xa0cba78, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0xb5324d93 in QEventLoop::processEvents (this=0x8e54f294, flags=...) at kernel/qeventloop.cpp:128
#14 0xb53251fa in QEventLoop::exec (this=0x8e54f294, flags=...) at kernel/qeventloop.cpp:204
#15 0xb50f740d in QThread::exec (this=0xa0cb708) at thread/qthread.cpp:503
#16 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#17 0xb50fc7eb in QThreadPrivate::start (arg=0xa0cb708) at thread/qthread_unix.cpp:337
#18 0xb4bad1aa in start_thread (arg=0x8e54fb40) at pthread_create.c:333
#19 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 9 (Thread 0x8d4acb40 (LWP 4037)):
#0  0xb77ad996 in __vdso_clock_gettime ()
#1  0xb4eb9740 in __GI___clock_gettime (clock_id=1, tp=0x8d4ac004) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb519d498 in qt_clock_gettime (ts=0x8d4ac004, 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  0xb5381321 in QTimerInfoList::updateCurrentTime (this=0x963fa354) at kernel/qtimerinfo_unix.cpp:84
#6  0xb5381834 in QTimerInfoList::timerWait (this=0x963fa354, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0xb5382db9 in timerSourcePrepareHelper (timeout=0x8d4ac0f8, src=0x963fa320) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=0x963fa320, timeout=0x8d4ac0f8) at kernel/qeventdispatcher_glib.cpp:160
#9  0xb44ee41b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#12 0xb53839fc in QEventDispatcherGlib::processEvents (this=0x95feb278, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0xb5324d93 in QEventLoop::processEvents (this=0x8d4ac294, flags=...) at kernel/qeventloop.cpp:128
#14 0xb53251fa in QEventLoop::exec (this=0x8d4ac294, flags=...) at kernel/qeventloop.cpp:204
#15 0xb50f740d in QThread::exec (this=0xa17aca8) at thread/qthread.cpp:503
#16 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#17 0xb50fc7eb in QThreadPrivate::start (arg=0xa17aca8) at thread/qthread_unix.cpp:337
#18 0xb4bad1aa in start_thread (arg=0x8d4acb40) at pthread_create.c:333
#19 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 8 (Thread 0x8c409b40 (LWP 4038)):
#0  0xb44ee427 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x95c097d8, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0xb5324d93 in QEventLoop::processEvents (this=0x8c409294, flags=...) at kernel/qeventloop.cpp:128
#5  0xb53251fa in QEventLoop::exec (this=0x8c409294, flags=...) at kernel/qeventloop.cpp:204
#6  0xb50f740d in QThread::exec (this=0xa1dbd38) at thread/qthread.cpp:503
#7  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#8  0xb50fc7eb in QThreadPrivate::start (arg=0xa1dbd38) at thread/qthread_unix.cpp:337
#9  0xb4bad1aa in start_thread (arg=0x8c409b40) at pthread_create.c:333
#10 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 7 (Thread 0x8a4bab40 (LWP 4041)):
#0  0xb77ad996 in __vdso_clock_gettime ()
#1  0xb4eb9740 in __GI___clock_gettime (clock_id=1, tp=0x8a4ba024) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb519d498 in qt_clock_gettime (ts=0x8a4ba024, 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  0xb5381321 in QTimerInfoList::updateCurrentTime (this=0x962d888c) at kernel/qtimerinfo_unix.cpp:84
#6  0xb53832cd in timerSourceCheckHelper (src=0x962d8858) at kernel/qeventdispatcher_glib.cpp:141
#7  timerSourceCheck (source=0x962d8858) at kernel/qeventdispatcher_glib.cpp:168
#8  0xb44ee969 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb53839fc in QEventDispatcherGlib::processEvents (this=0x99d9f628, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#12 0xb5324d93 in QEventLoop::processEvents (this=0x8a4ba274, flags=...) at kernel/qeventloop.cpp:128
#13 0xb53251fa in QEventLoop::exec (this=0x8a4ba274, flags=...) at kernel/qeventloop.cpp:204
#14 0xb50f740d in QThread::exec (this=0xa7b12b0) at thread/qthread.cpp:503
#15 0x8a9b0d80 in KCupsConnection::run() () from /usr/lib/i386-linux-gnu/libkcupslib.so
#16 0xb50fc7eb in QThreadPrivate::start (arg=0xa7b12b0) at thread/qthread_unix.cpp:337
#17 0xb4bad1aa in start_thread (arg=0x8a4bab40) at pthread_create.c:333
#18 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 6 (Thread 0x897efb40 (LWP 4050)):
#0  0xb77adbe0 in __kernel_vsyscall ()
#1  0xb4bb225c in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb4eb8cf6 in __pthread_cond_wait (cond=0x897ee8ac, mutex=0x8d1fb8c) at forward.c:149
#3  0xb699d607 in ?? () from /usr/lib/i386-linux-gnu/libxcb.so.1
#4  0xb699f088 in ?? () from /usr/lib/i386-linux-gnu/libxcb.so.1
#5  0xb699f1eb in xcb_wait_for_reply () from /usr/lib/i386-linux-gnu/libxcb.so.1
#6  0xb69ed166 in _XReply () from /usr/lib/i386-linux-gnu/libX11.so.6
#7  0xb4394d77 in ?? () from /usr/lib/nvidia-340/libGL.so.1
#8  0xb4335948 in ?? () from /usr/lib/nvidia-340/libGL.so.1
#9  0xb29ef2e0 in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.76
#10 0xb2a8e3ae in ?? () from /usr/lib/nvidia-340/libnvidia-glcore.so.340.76
#11 0xb4382e7e in ?? () from /usr/lib/nvidia-340/libGL.so.1
#12 0xb435b2e1 in glXSwapBuffers () from /usr/lib/nvidia-340/libGL.so.1
#13 0xaf684de0 in QGLXContext::swapBuffers (this=0xa830ff0, surface=0x99b92b0) at qglxintegration.cpp:529
#14 0xb56ae3d9 in QOpenGLContext::swapBuffers (this=0xa834be0, surface=0x8d5c750) at kernel/qopenglcontext.cpp:990
#15 0xb74854c6 in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#16 0xb7486ffa in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#17 0xb50fc7eb in QThreadPrivate::start (arg=0x9cc8fd8) at thread/qthread_unix.cpp:337
#18 0xb4bad1aa in start_thread (arg=0x897efb40) at pthread_create.c:333
#19 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 5 (Thread 0x884c2b40 (LWP 4053)):
#0  0xb4535a48 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb44ee777 in g_main_context_query () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44eef7f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x95f92cd0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0xb5324d93 in QEventLoop::processEvents (this=0x884c2294, flags=...) at kernel/qeventloop.cpp:128
#6  0xb53251fa in QEventLoop::exec (this=0x884c2294, flags=...) at kernel/qeventloop.cpp:204
#7  0xb50f740d in QThread::exec (this=0x9d040f0) at thread/qthread.cpp:503
#8  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#9  0xb50fc7eb in QThreadPrivate::start (arg=0x9d040f0) at thread/qthread_unix.cpp:337
#10 0xb4bad1aa in start_thread (arg=0x884c2b40) at pthread_create.c:333
#11 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 4 (Thread 0x874c1b40 (LWP 4054)):
#0  0xb77adbe0 in __kernel_vsyscall ()
#1  0xb4e9b75b in read () at ../sysdeps/unix/syscall-template.S:81
#2  0xb3a6b54c in ?? () from /usr/lib/nvidia-340/tls/libnvidia-tls.so.340.76
#3  0xb4534515 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb44eea82 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x8ad91268, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#8  0xb5324d93 in QEventLoop::processEvents (this=0x874c1294, flags=...) at kernel/qeventloop.cpp:128
#9  0xb53251fa in QEventLoop::exec (this=0x874c1294, flags=...) at kernel/qeventloop.cpp:204
#10 0xb50f740d in QThread::exec (this=0xaa9f7e0) at thread/qthread.cpp:503
#11 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#12 0xb50fc7eb in QThreadPrivate::start (arg=0xaa9f7e0) at thread/qthread_unix.cpp:337
#13 0xb4bad1aa in start_thread (arg=0x874c1b40) at pthread_create.c:333
#14 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 3 (Thread 0x86470b40 (LWP 4055)):
#0  0xb5382f7b in postEventSourcePrepare (s=0xaebc6da0, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:260
#1  0xb44ee41b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb44eef24 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb53839fc in QEventDispatcherGlib::processEvents (this=0x96259810, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0xb5324d93 in QEventLoop::processEvents (this=0x86470294, flags=...) at kernel/qeventloop.cpp:128
#6  0xb53251fa in QEventLoop::exec (this=0x86470294, flags=...) at kernel/qeventloop.cpp:204
#7  0xb50f740d in QThread::exec (this=0xab462b8) at thread/qthread.cpp:503
#8  0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#9  0xb50fc7eb in QThreadPrivate::start (arg=0xab462b8) at thread/qthread_unix.cpp:337
#10 0xb4bad1aa in start_thread (arg=0x86470b40) at pthread_create.c:333
#11 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 2 (Thread 0x853cfb40 (LWP 4056)):
#0  0xb77adbe0 in __kernel_vsyscall ()
#1  0xb4e9b75b in read () at ../sysdeps/unix/syscall-template.S:81
#2  0xb3a6b54c in ?? () from /usr/lib/nvidia-340/tls/libnvidia-tls.so.340.76
#3  0xb4534515 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb44eea82 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb44eefaa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb53839fc in QEventDispatcherGlib::processEvents (this=0xabaee70, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#8  0xb5324d93 in QEventLoop::processEvents (this=0x853cf294, flags=...) at kernel/qeventloop.cpp:128
#9  0xb53251fa in QEventLoop::exec (this=0x853cf294, flags=...) at kernel/qeventloop.cpp:204
#10 0xb50f740d in QThread::exec (this=0xabaeaf8) at thread/qthread.cpp:503
#11 0xb678950f in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#12 0xb50fc7eb in QThreadPrivate::start (arg=0xabaeaf8) at thread/qthread_unix.cpp:337
#13 0xb4bad1aa in start_thread (arg=0x853cfb40) at pthread_create.c:333
#14 0xb4eabfde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 1 (Thread 0xafa79740 (LWP 3963)):
[KCrash Handler]
#7  operator& (f=Qt::WindowType_Mask, this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#8  windowType (this=<optimized out>) at kernel/qwidget.h:744
#9  isWindow (this=<optimized out>) at kernel/qwidget.h:752
#10 QWidget::window (this=0x0) at kernel/qwidget.cpp:4279
#11 0xb48eff3c in topLevelWidget (this=<optimized out>) at /usr/include/i386-linux-gnu/qt5/QtWidgets/qwidget.h:294
#12 NotifyByTaskbar::notify (this=0xa7c70a8, notification=0xac50160, config=0xbf855fe0) at ../../src/notifybytaskbar.cpp:44
#13 0xb48d3e20 in KNotificationManager::notify (this=0xb4912748 <(anonymous namespace)::Q_QGS_s_self::innerFunction()::holder>, n=0xac50160) at ../../src/knotificationmanager.cpp:177
#14 0xb48d246f in KNotification::sendEvent (this=0xac50160) at ../../src/knotification.cpp:381
#15 0xb48f705c in KNotification::qt_static_metacall (_o=0xac50160, _c=QMetaObject::InvokeMetaMethod, _id=13, _a=0xa9a0108) at moc_knotification.cpp:130
#16 0xb5358590 in QMetaCallEvent::placeMetaCall (this=0xac6efe0, object=0xac50160) at kernel/qobject.cpp:485
#17 0xb535bd03 in QObject::event (this=0xac50160, e=0xac6efe0) at kernel/qobject.cpp:1245
#18 0xb5c2c82a in QApplicationPrivate::notify_helper (this=0x8d0cb90, receiver=0xac50160, e=0xac6efe0) at kernel/qapplication.cpp:3720
#19 0xb5c32081 in QApplication::notify (this=0xbf856678, receiver=0xac50160, e=0xac6efe0) at kernel/qapplication.cpp:3503
#20 0xb5327b8a in QCoreApplication::notifyInternal (this=0xbf856678, receiver=0xac50160, event=0xac6efe0) at kernel/qcoreapplication.cpp:935
#21 0xb5329e7c in sendEvent (event=0xac6efe0, receiver=0xac50160) at kernel/qcoreapplication.h:228
#22 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8d08270) at kernel/qcoreapplication.cpp:1552
#23 0xb532a597 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1410
#24 0xb53835d3 in postEventSourceDispatch (s=0x8d0dd08) at kernel/qeventdispatcher_glib.cpp:271
#25 0xb44eed64 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0xb44ef089 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0xb44ef156 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0xb53839e4 in QEventDispatcherGlib::processEvents (this=0x8d48c80, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#29 0xaf688611 in QPAEventDispatcherGlib::processEvents (this=0x8d48c80, flags=...) at eventdispatchers/qeventdispatcher_glib.cpp:115
#30 0xb5324d93 in QEventLoop::processEvents (this=0xbf856598, flags=...) at kernel/qeventloop.cpp:128
#31 0xb53251fa in QEventLoop::exec (this=0xbf856598, flags=...) at kernel/qeventloop.cpp:204
#32 0xb532d315 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#33 0xb5662a41 in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#34 0xb5c27da4 in QApplication::exec () at kernel/qapplication.cpp:2956
#35 0x08070760 in main (argc=4, argv=0xbf856764) at ../../shell/main.cpp:154

Possible duplicates by query: bug 348896, bug 348870, bug 348820, bug 348092, bug 348091.

Reported using DrKonqi
Comment 1 Bhushan Shah 2015-06-11 15:12:07 UTC 

*** This bug has been marked as a duplicate of bug 348870 ***
Comment 2 Martin Klapetek 2015-06-12 11:24:11 UTC 

*** This bug has been marked as a duplicate of bug 348233 ***
Comment 3 ggmahyar 2015-06-17 06:10:02 UTC 
Well, it actually did go away after update, but I had to do a dist-upgrade too. Interestingly, since then it crashes occasionally but not repeatedly. Today I noticed it crash again after some disk activity and I just did an update. It has not crashed since. Could it be something like an update notification, which causes this to happen? You have no idea how non-expert I am in this area :-)
Comment 4 Martin Klapetek 2015-08-24 17:15:22 UTC 
Hard to say, sometimes the qtquick engine (layer below Plasma) just explodes and not much we can do about...