Bug 350428

Summary: Plasma Crashed while playing music in Clementine
Product: [Plasma] plasmashell Reporter: genmavlad
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bshah, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.3.1   
Target Milestone: 1.0   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description genmavlad 2015-07-20 21:43:19 UTC 
Application: plasmashell (5.3.1)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-22-generic x86_64
Distribution: Ubuntu 15.04

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

I was listening to local mp3 files via Clementine. The only other active program that was running was htop (in the Yakuake drop down terminal). Otherwse, the computer was idle. This crash has been occouring over the past 6 to 8 weeks about once a day (always with the same set of circumstances i.e listeningto music, htop running in the bakground, but otherwise not doing anything on the computer). I haven't been able to directly reproduce the crash, but given when it happens it seems that it is after 1.5 hours of the computer being in the above state that it happens (not always, but I'd say 5 out of 7 days a week).

The crash can be reproduced sometimes.

-- 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 0x7fd1f8c117c0 (LWP 24047))]

Thread 40 (Thread 0x7fd1e2887700 (LWP 24049)):
#0  0x00007fd1f37338dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1f5ee9b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fd1f5eeb64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fd1e545b099 in QXcbEventReader::run (this=0x831e50) at qxcbconnection.cpp:1105
#4  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x831e50) at thread/qthread_unix.cpp:337
#5  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1e2887700) at pthread_create.c:333
#6  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 39 (Thread 0x7fd1dbfff700 (LWP 24054)):
#0  0x00007fd1f37338dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1f0009ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1dbffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x93adc0) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x93adc0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x93adc0) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1dbfff700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 38 (Thread 0x7fd1d1637700 (LWP 24055)):
#0  0x00007fd1f00097aa in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f0009e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1d1636de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0xac6750) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0xac6750) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0xac6750) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1d1637700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 37 (Thread 0x7fd1cad8f700 (LWP 24059)):
#0  __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:98
#1  0x00007fd1f37338e9 in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007fd1f0009ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1bc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1cad8ede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0xef19f0) at thread/qthread.cpp:503
#7  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0xef19f0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0xef19f0) at thread/qthread_unix.cpp:337
#9  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1cad8f700) at pthread_create.c:333
#10 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 36 (Thread 0x7fd1c9d8e700 (LWP 24060)):
#0  0x00007fd1f372f49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1ec581f45 in ?? () from /usr/lib/nvidia-346-updates/tls/libnvidia-tls.so.346.59
#2  0x00007fd1f004d2f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f000996c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f0009e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1c00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1c9d8dde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0xfde2d0) at thread/qthread.cpp:503
#9  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0xfde2d0) at qml/ftw/qqmlthread.cpp:141
#10 0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0xfde2d0) at thread/qthread_unix.cpp:337
#11 0x00007fd1f2fb76aa in start_thread (arg=0x7fd1c9d8e700) at pthread_create.c:333
#12 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 35 (Thread 0x7fd1c8ced700 (LWP 24061)):
#0  0x00007fd1f004e7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f00098b9 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1b40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1c8cecde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x10d0500) at thread/qthread.cpp:503
#7  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x10d0500) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x10d0500) at thread/qthread_unix.cpp:337
#9  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1c8ced700) at pthread_create.c:333
#10 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 34 (Thread 0x7fd1bb7ff700 (LWP 24062)):
#0  __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:98
#1  0x00007fd1f37338e9 in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007fd1f0009ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1b00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1bb7fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x11c3350) at thread/qthread.cpp:503
#7  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x11c3350) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x11c3350) at thread/qthread_unix.cpp:337
#9  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1bb7ff700) at pthread_create.c:333
#10 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7fd1ba7fe700 (LWP 24063)):
#0  QTimerInfoList::timerWait (this=0x7fd1a8002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:378
#1  0x00007fd1f405203e in timerSourcePrepareHelper (timeout=0x7fd1ba7fdc14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#2  timerSourcePrepare (source=<optimized out>, timeout=0x7fd1ba7fdc14) at kernel/qeventdispatcher_glib.cpp:160
#3  0x00007fd1f00093fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f0009de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1a80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1ba7fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x12b8dc0) at thread/qthread.cpp:503
#9  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x12b8dc0) at qml/ftw/qqmlthread.cpp:141
#10 0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x12b8dc0) at thread/qthread_unix.cpp:337
#11 0x00007fd1f2fb76aa in start_thread (arg=0x7fd1ba7fe700) at pthread_create.c:333
#12 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7fd1b97fd700 (LWP 24064)):
#0  0x00007fd1f4050b50 in QTimerInfoList::repairTimersIfNeeded (this=0x7fd1ac0030d0) at kernel/qtimerinfo_unix.cpp:160
#1  0x00007fd1f4050bb3 in QTimerInfoList::timerWait (this=0x7fd1ac0030d0, tm=...) at kernel/qtimerinfo_unix.cpp:380
#2  0x00007fd1f405203e in timerSourcePrepareHelper (timeout=0x7fd1b97fcc14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#3  timerSourcePrepare (source=<optimized out>, timeout=0x7fd1b97fcc14) at kernel/qeventdispatcher_glib.cpp:160
#4  0x00007fd1f00093fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd1f0009de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1ac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#8  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1b97fcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x13c0110) at thread/qthread.cpp:503
#10 0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x13c0110) at qml/ftw/qqmlthread.cpp:141
#11 0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x13c0110) at thread/qthread_unix.cpp:337
#12 0x00007fd1f2fb76aa in start_thread (arg=0x7fd1b97fd700) at pthread_create.c:333
#13 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7fd1a7fff700 (LWP 24065)):
#0  0x00007fd1f004e7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f0009eb1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1a00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1a7ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x149f470) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x149f470) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x149f470) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1a7fff700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7fd1a6ffe700 (LWP 24066)):
#0  0x00007fd1f004e7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f0009e76 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1a6ffdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x15916f0) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x15916f0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x15916f0) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1a6ffe700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7fd1a5ffd700 (LWP 24067)):
#0  0x00007fd1f00093bb in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f0009de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd19c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1a5ffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x16779a0) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x16779a0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x16779a0) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1a5ffd700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7fd1a4ffc700 (LWP 24068)):
#0  0x00007fd1f37338dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1f0009ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1a4ffbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x1777a10) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x1777a10) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x1777a10) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1a4ffc700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7fd1977ff700 (LWP 24069)):
#0  0x00007fd1f004e789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f0009409 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd18c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1977fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x186da10) at thread/qthread.cpp:503
#7  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x186da10) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x186da10) at thread/qthread_unix.cpp:337
#9  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1977ff700) at pthread_create.c:333
#10 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7fd1967fe700 (LWP 24070)):
#0  0x00007fd1f372f49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1ec581f45 in ?? () from /usr/lib/nvidia-346-updates/tls/libnvidia-tls.so.346.59
#2  0x00007fd1f004d2f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f000996c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f0009e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1967fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x195be20) at thread/qthread.cpp:503
#9  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x195be20) at qml/ftw/qqmlthread.cpp:141
#10 0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x195be20) at thread/qthread_unix.cpp:337
#11 0x00007fd1f2fb76aa in start_thread (arg=0x7fd1967fe700) at pthread_create.c:333
#12 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7fd1957fd700 (LWP 24071)):
#0  0x00007fd1f004e7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f0009ddb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd1957fcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x1a45310) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x1a45310) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x1a45310) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd1957fd700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7fd183fff700 (LWP 24072)):
#0  0x00007fd1f37338dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1f0009ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd17c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd183ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x1b3e460) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x1b3e460) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x1b3e460) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd183fff700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7fd182ffe700 (LWP 24073)):
#0  0x00007fd1f37338dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1f0009ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1740008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd182ffdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x1c548d0) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x1c548d0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x1c548d0) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd182ffe700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7fd181ffd700 (LWP 24074)):
#0  0x00007fd1f004e7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f00098b9 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd1780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd181ffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x1d6b740) at thread/qthread.cpp:503
#7  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x1d6b740) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x1d6b740) at thread/qthread_unix.cpp:337
#9  0x00007fd1f2fb76aa in start_thread (arg=0x7fd181ffd700) at pthread_create.c:333
#10 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7fd180ffc700 (LWP 24075)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1f7d35644 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fd1f7d35689 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fd1f2fb76aa in start_thread (arg=0x7fd180ffc700) at pthread_create.c:333
#4  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7fd0f3fff700 (LWP 24076)):
#0  0x00007fd1f372f49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1ec581f45 in ?? () from /usr/lib/nvidia-346-updates/tls/libnvidia-tls.so.346.59
#2  0x00007fd1f004d2f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f000996c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f0009e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd0ec0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0f3ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x1e1b810) at thread/qthread.cpp:503
#9  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x1e1b810) at qml/ftw/qqmlthread.cpp:141
#10 0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x1e1b810) at thread/qthread_unix.cpp:337
#11 0x00007fd1f2fb76aa in start_thread (arg=0x7fd0f3fff700) at pthread_create.c:333
#12 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7fd0f22ff700 (LWP 24080)):
#0  0x00007fd1f3db39ca in testAndSetRelaxed<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x1fc6f08: 0x1) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86.h:259
#1  testAndSetAcquire<QMutexData*, QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x1fc6f08: 0x1) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:166
#2  testAndSetAcquire (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, this=0x1fc6f08, this@entry=0x1) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:270
#3  fastTryLock (current=<synthetic pointer>, this=0x1fc6f08, this@entry=0x1) at thread/qmutex.h:82
#4  QMutex::lock (this=this@entry=0x1fc6f08) at thread/qmutex.cpp:212
#5  0x00007fd1f40521db in QMutexLocker (m=0x1fc6f08, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:128
#6  canWaitLocked (this=0x1fc6ee0) at ../../include/QtCore/5.4.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:243
#7  postEventSourcePrepare (s=0x7fd0e40012d0, timeout=0x7fd0f22fec14) at kernel/qeventdispatcher_glib.cpp:254
#8  0x00007fd1f00093fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fd1f0009de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd0e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#12 0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0f22fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#13 0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x200abf0) at thread/qthread.cpp:503
#14 0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x200abf0) at qml/ftw/qqmlthread.cpp:141
#15 0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x200abf0) at thread/qthread_unix.cpp:337
#16 0x00007fd1f2fb76aa in start_thread (arg=0x7fd0f22ff700) at pthread_create.c:333
#17 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fd0f0947700 (LWP 24081)):
#0  0x00007ffdb8592d13 in clock_gettime ()
#1  0x00007fd1f374d38d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fd1f3e71cb6 in qt_clock_gettime (ts=0x7fd0f0946af0, 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  0x00007fd1f4050639 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fd0e8002cd0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fd1f4050ba5 in QTimerInfoList::timerWait (this=0x7fd0e8002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0x00007fd1f405203e in timerSourcePrepareHelper (timeout=0x7fd0f0946bc4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fd0f0946bc4) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007fd1f00093fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fd1f0009de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd0e80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0f0946d90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x1a44ce0) at thread/qthread.cpp:503
#15 0x00007fd1f88b8b56 in QQuickPixmapReader::run (this=0x1a44ce0) at util/qquickpixmapcache.cpp:714
#16 0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x1a44ce0) at thread/qthread_unix.cpp:337
#17 0x00007fd1f2fb76aa in start_thread (arg=0x7fd0f0947700) at pthread_create.c:333
#18 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fd0e3fff700 (LWP 24082)):
#0  0x00007fd1f372f49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1ec581f45 in ?? () from /usr/lib/nvidia-346-updates/tls/libnvidia-tls.so.346.59
#2  0x00007fd1f004d2f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f000996c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f0009e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd0dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0e3ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x2153320) at thread/qthread.cpp:503
#9  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x2153320) at qml/ftw/qqmlthread.cpp:141
#10 0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x2153320) at thread/qthread_unix.cpp:337
#11 0x00007fd1f2fb76aa in start_thread (arg=0x7fd0e3fff700) at pthread_create.c:333
#12 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fd0da24f700 (LWP 24138)):
#0  0x00007fd1f004e789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f0009641 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009e37 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd0d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0da24ede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x25ef800) at thread/qthread.cpp:503
#7  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x25ef800) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x25ef800) at thread/qthread_unix.cpp:337
#9  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0da24f700) at pthread_create.c:333
#10 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fd0d915e700 (LWP 24139)):
#0  0x00007fd1f004e789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f0009a16 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd0cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0d915dde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x298ff10) at thread/qthread.cpp:503
#7  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x298ff10) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x298ff10) at thread/qthread_unix.cpp:337
#9  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0d915e700) at pthread_create.c:333
#10 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fd0d3df7700 (LWP 24145)):
#0  0x00007fd1f004e7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f0008e5e in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009d75 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd0c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0d3df6de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x2abb470) at thread/qthread.cpp:503
#7  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x2abb470) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x2abb470) at thread/qthread_unix.cpp:337
#9  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0d3df7700) at pthread_create.c:333
#10 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fd0d2d46700 (LWP 24146)):
#0  0x00007fd1f37338dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1f0009ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd0c00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0d2d45de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x2a942b0) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x2a942b0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x2a942b0) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0d2d46700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fd0d1c45700 (LWP 24147)):
#0  0x00007fd1f37338dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1f0009ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd0c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0d1c44de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x2cbd750) at thread/qthread.cpp:503
#6  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x2cbd750) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x2cbd750) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0d1c45700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fd0d0b44700 (LWP 24152)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1f3dbcc6b in wait (time=18446744073709551615, this=0x28a7da0) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x28a81d8, mutex=mutex@entry=0x28a81d0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd1f892afab in takeEvent (wait=true, this=0x28a81c8) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x28a8150) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd1f892b3a0 in QSGRenderThread::run (this=0x28a8150) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x28a8150) at thread/qthread_unix.cpp:337
#7  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0d0b44700) at pthread_create.c:333
#8  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fd0bce1e700 (LWP 24153)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1f3dbcc6b in wait (time=18446744073709551615, this=0x20243b0) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x2ea4918, mutex=mutex@entry=0x2ea4910, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd1f892afab in takeEvent (wait=true, this=0x2ea4908) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x2ea4890) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd1f892b3a0 in QSGRenderThread::run (this=0x2ea4890) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x2ea4890) at thread/qthread_unix.cpp:337
#7  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0bce1e700) at pthread_create.c:333
#8  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fd0b0617700 (LWP 24154)):
#0  0x00007fd1f37338dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1f0009ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x34a77c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0b0616dc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd1f3db6b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd0b28b7cf7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x34af700) at thread/qthread_unix.cpp:337
#8  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0b0617700) at pthread_create.c:333
#9  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fd0af7c7700 (LWP 24156)):
#0  0x00007fd1f004e7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1f00098b9 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1f0009e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1f0009fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1f4052c6c in QEventDispatcherGlib::processEvents (this=0x7fd0b4145c90, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd1f3ff73e2 in QEventLoop::exec (this=this@entry=0x7fd0af7c6de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd1f3db6b44 in QThread::exec (this=this@entry=0x30939b0) at thread/qthread.cpp:503
#7  0x00007fd1f5b59f65 in QQmlThreadPrivate::run (this=0x30939b0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x30939b0) at thread/qthread_unix.cpp:337
#9  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0af7c7700) at pthread_create.c:333
#10 0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fd0abcc7700 (LWP 27791)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1f3dbcc6b in wait (time=18446744073709551615, this=0x39abe00) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x3376088, mutex=mutex@entry=0x3376080, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd1f892afab in takeEvent (wait=true, this=0x3376078) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x3376000) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd1f892b3a0 in QSGRenderThread::run (this=0x3376000) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x3376000) at thread/qthread_unix.cpp:337
#7  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0abcc7700) at pthread_create.c:333
#8  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fd0aacbd700 (LWP 28692)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1f3dbcc6b in wait (time=18446744073709551615, this=0x3a2aa80) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x3a72a78, mutex=mutex@entry=0x3a72a70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd1f892afab in takeEvent (wait=true, this=0x3a72a68) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x3a729f0) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd1f892b3a0 in QSGRenderThread::run (this=0x3a729f0) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x3a729f0) at thread/qthread_unix.cpp:337
#7  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0aacbd700) at pthread_create.c:333
#8  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fd0aa137700 (LWP 29619)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1f3dbcc6b in wait (time=18446744073709551615, this=0x3b7a730) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x3eb2b18, mutex=mutex@entry=0x3eb2b10, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd1f892afab in takeEvent (wait=true, this=0x3eb2b08) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x3eb2a90) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd1f892b3a0 in QSGRenderThread::run (this=0x3eb2a90) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x3eb2a90) at thread/qthread_unix.cpp:337
#7  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0aa137700) at pthread_create.c:333
#8  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fd0a9629700 (LWP 29719)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1f3dbcc6b in wait (time=18446744073709551615, this=0x3f1a0a0) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x3cc7f78, mutex=mutex@entry=0x3cc7f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd1f892afab in takeEvent (wait=true, this=0x3cc7f68) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x3cc7ef0) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd1f892b3a0 in QSGRenderThread::run (this=0x3cc7ef0) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x3cc7ef0) at thread/qthread_unix.cpp:337
#7  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0a9629700) at pthread_create.c:333
#8  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fd0ae507700 (LWP 32765)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1f3dbcc6b in wait (time=18446744073709551615, this=0x45d01d0) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x45dbb08, mutex=mutex@entry=0x45dbb00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd1f892afab in takeEvent (wait=true, this=0x45dbaf8) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x45dba80) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd1f892b3a0 in QSGRenderThread::run (this=0x45dba80) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x45dba80) at thread/qthread_unix.cpp:337
#7  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0ae507700) at pthread_create.c:333
#8  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fd0a7dc2700 (LWP 2672)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1f3dbcc6b in wait (time=18446744073709551615, this=0x3fc8e10) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x3972718, mutex=mutex@entry=0x3972710, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd1f892afab in takeEvent (wait=true, this=0x3972708) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x3972690) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd1f892b3a0 in QSGRenderThread::run (this=0x3972690) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd1f3dbbb0e in QThreadPrivate::start (arg=0x3972690) at thread/qthread_unix.cpp:337
#7  0x00007fd1f2fb76aa in start_thread (arg=0x7fd0a7dc2700) at pthread_create.c:333
#8  0x00007fd1f373eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fd1f8c117c0 (LWP 24047)):
[KCrash Handler]
#6  0x00007fd1f5a36b96 in drainMarkStack (markBase=0x7fd182fff0b8, engine=0x1b37e50) at jsruntime/qv4mm.cpp:269
#7  QV4::MemoryManager::mark (this=this@entry=0x1b3c460) at jsruntime/qv4mm.cpp:330
#8  0x00007fd1f5a37598 in QV4::MemoryManager::runGC (this=0x1b3c460) at jsruntime/qv4mm.cpp:458
#9  0x00007fd1f5a38483 in QV4::MemoryManager::allocData (this=0x1b3c460, size=80) at jsruntime/qv4mm.cpp:211
#10 0x00007fd1f5a26429 in allocManaged (size=<optimized out>, this=<optimized out>) at jsruntime/qv4mm_p.h:94
#11 alloc<QV4::VariantObject, QV4::ExecutionEngine*, QVariant> (arg2=..., arg1=0x1b37e50, this=<optimized out>) at jsruntime/qv4mm_p.h:117
#12 QV4::ExecutionEngine::newVariantObject (this=0x1b37e50, v=...) at jsruntime/qv4engine.cpp:664
#13 0x00007fd1f5b5bd0c in QV8Engine::fromVariant (this=0x1b407f0, variant=...) at qml/v8/qv8engine.cpp:479
#14 0x00007fd1f5a993b2 in LoadProperty<ReadAccessor::Direct> (engine=0x1b407f0, object=0x3f4f100, property=..., notifier=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:232
#15 0x00007fd1f5a9a58d in QV4::QObjectWrapper::getProperty (object=0x3f4f100, ctx=0x7ffdb8413320, property=0x382e1e8, captureRequired=captureRequired@entry=true) at jsruntime/qv4qobjectwrapper.cpp:386
#16 0x00007fd1f5a9aeb6 in QV4::QObjectWrapper::getQmlProperty (this=0x7fd0bf22e260, ctx=0x7ffdb8413320, qmlContext=<optimized out>, n=<optimized out>, revisionMode=QV4::QObjectWrapper::IgnoreRevision, hasProperty=0x0, includeImports=true) at jsruntime/qv4qobjectwrapper.cpp:324
#17 0x00007fd1f5a9b0e1 in QV4::QObjectWrapper::get (m=0x7fd0bf22e260, name=0x7fd1b81154c0, hasProperty=0x0) at jsruntime/qv4qobjectwrapper.cpp:678
#18 0x00007fd1f5aa8927 in get (hasProperty=0x0, name=0x7fd1b81154c0, this=<optimized out>) at jsruntime/qv4object_p.h:252
#19 QV4::Runtime::getProperty (ctx=0x7ffdb8413320, object=..., name=0x7fd1b81154c0) at jsruntime/qv4runtime.cpp:658
#20 0x00007fd0e1278144 in ?? ()
#21 0x0000000003a55ee0 in ?? ()
#22 0x0000000003a55f18 in ?? ()
#23 0x0000000000000000 in ?? ()

Possible duplicates by query: bug 347981, bug 347891.

Reported using DrKonqi
Comment 1 David Edmundson 2015-07-20 23:43:06 UTC 
Thanks

This crash is deep in Qt, you're running an older version (5.4.1 of Qt) maybe upgrading will fix this; we've seen this trace before but I don't think I've seen it on newer Qt.

*** This bug has been marked as a duplicate of bug 347891 ***