Bug 341666

Summary: crashing with webview type [@ WebCore::TextureMapperLayer::addChild]
Product: [Plasma] plasmashell Reporter: kinta <aleixq>
Component: PanelAssignee: David Edmundson <kde>
Status: RESOLVED FIXED    
Severity: crash CC: e.m.a.t.i.r.o.v, lisacvukhome
Priority: NOR    
Version First Reported In: 5.1.1   
Target Milestone: 1.0   
Platform: Ubuntu   
OS: Linux   
URL: http://kde-apps.org/content/show.php?content=168119
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Backtrace

Description kinta 2014-12-08 18:50:03 UTC 
I am using webview type in a qml plasmoid that is  compacted in a panel. After going to fullRepresentation, then going to Simple web tab, then compactRepresentation  and then to fullRepresentation again, plasmashell crashes. 
I have added the url to a sample plasmoid to reproduce it. 

Reproducible: Always

Steps to Reproduce:
1.Install plasmoid with webview
2.Put it in a panel
3. Click button to go to Fullrepresentation
4. Go to Simple web Tab
5. Click outside plasmoid to go compactRepresentation
6. Click button to go to Fullrepresentation again. Crash Happens!
Comment 1 Mikhail Ivchenko 2014-12-08 19:48:42 UTC 
Created attachment 89872 [details]
Backtrace

It's reproducible for me too.
Comment 2 Myriam Schweingruber 2014-12-09 19:48:01 UTC 
Please always paste backtraces in-line, else the database is not searchable:

Application: plasmashell (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fddf3e5b880 (LWP 11448))]

Thread 39 (Thread 0x7fddde040700 (LWP 11450)):
#0  0x00007fddedafa2cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fddf0c5fb72 in poll (__timeout=-1, __nfds=1, __fds=0x7fddde03fc40) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x11113b0, cond=cond@entry=0x11113f0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:447
#3  0x00007fddf0c6164f in xcb_wait_for_event (c=0x11113b0) at ../../src/xcb_in.c:622
#4  0x00007fdde0381af9 in QXcbEventReader::run (this=0x111f8b0) at qxcbconnection.cpp:1034
#5  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x111f8b0) at thread/qthread_unix.cpp:345
#6  0x00007fddecefb0a5 in start_thread (arg=0x7fddde040700) at pthread_create.c:309
#7  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 38 (Thread 0x7fddd3c41700 (LWP 11451)):
#0  0x00007fddedafa2cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdde98f4ee4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fddcc003270, timeout=-1, context=0x7fddcc000990) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0x7fddcc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3776
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddcc000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddcc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fddd3c40d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x1327330) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fddd3c41700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 37 (Thread 0x7fddc94b9700 (LWP 11455)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fddcb90329b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007fddcb9029c7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007fddecefb0a5 in start_thread (arg=0x7fddc94b9700) at pthread_create.c:309
#4  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 36 (Thread 0x7fddc6ff4700 (LWP 11456)):
#0  g_mutex_unlock (mutex=0x7fddc0000990) at /build/buildd/glib2.0-2.42.1/./glib/gthread-posix.c:1346
#1  0x00007fdde98f4460 in g_main_context_prepare (context=context@entry=0x7fddc0000990, priority=priority@entry=0x7fddc6ff3c00) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3397
#2  0x00007fdde98f4e0b in g_main_context_iterate (context=context@entry=0x7fddc0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3761
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddc0000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddc00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fddc6ff3d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x15b21b0) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fddc6ff4700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 35 (Thread 0x7fddc4926700 (LWP 11460)):
#0  0x00007fdde9939390 in g_mutex_unlock (mutex=0x7fddbc000990) at /build/buildd/glib2.0-2.42.1/./glib/gthread-posix.c:1350
#1  0x00007fdde98f4460 in g_main_context_prepare (context=context@entry=0x7fddbc000990, priority=priority@entry=0x7fddc4925c00) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3397
#2  0x00007fdde98f4e0b in g_main_context_iterate (context=context@entry=0x7fddbc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3761
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddbc000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddbc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fddc4925d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x16db400) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fddc4926700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 34 (Thread 0x7fddb77ff700 (LWP 11461)):
#0  0x00007fddedafa2cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdde98f4ee4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fddb0003070, timeout=-1, context=0x7fddb0000990) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0x7fddb0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3776
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddb0000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddb00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fddb77fed40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x17b7d70) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fddb77ff700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 33 (Thread 0x7fddb675e700 (LWP 11462)):
#0  0x00007fff9d9dfb49 in clock_gettime ()
#1  0x00007fddedb12a9d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fddee234a96 in qt_clock_gettime (ts=0x7fddb675daa0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:113
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:169
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:178
#5  0x00007fddee409949 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fdda8002cd0) at kernel/qtimerinfo_unix.cpp:92
#6  0x00007fddee409eb5 in QTimerInfoList::timerWait (this=0x7fdda8002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:387
#7  0x00007fddee40b28e in timerSourcePrepareHelper (timeout=0x7fddb675db74, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:135
#8  timerSourcePrepare (source=<optimized out>, timeout=timeout@entry=0x7fddb675db74) at kernel/qeventdispatcher_glib.cpp:168
#9  0x00007fdde98f446d in g_main_context_prepare (context=context@entry=0x7fdda8000990, priority=priority@entry=0x7fddb675dc00) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3399
#10 0x00007fdde98f4e0b in g_main_context_iterate (context=context@entry=0x7fdda8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3761
#11 0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdda8000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#12 0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdda80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#13 0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fddb675dd40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#14 0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#15 0x00007fddee17b2ee in QThreadPrivate::start (arg=0x188c360) at thread/qthread_unix.cpp:345
#16 0x00007fddecefb0a5 in start_thread (arg=0x7fddb675e700) at pthread_create.c:309
#17 0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 32 (Thread 0x7fddb566d700 (LWP 11463)):
#0  0x00007fddedafa2cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdde98f4ee4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fddac003070, timeout=-1, context=0x7fddac000990) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0x7fddac000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3776
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddac000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fddb566cd40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x19664d0) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fddb566d700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 31 (Thread 0x7fdda7fff700 (LWP 11464)):
#0  0x00007fdde98f4920 in g_main_context_check (context=context@entry=0x7fdda0000990, max_priority=2147483647, fds=fds@entry=0x7fdda0003270, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3638
#1  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fdda0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#2  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdda0000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#3  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdda00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdda7ffed40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#6  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x1a6e3d0) at thread/qthread_unix.cpp:345
#7  0x00007fddecefb0a5 in start_thread (arg=0x7fdda7fff700) at pthread_create.c:309
#8  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 30 (Thread 0x7fdda6ffe700 (LWP 11465)):
#0  0x00007fdde9939369 in g_mutex_lock (mutex=mutex@entry=0x7fdd98000990) at /build/buildd/glib2.0-2.42.1/./glib/gthread-posix.c:1337
#1  0x00007fdde98f48cc in g_main_context_check (context=context@entry=0x7fdd98000990, max_priority=2147483647, fds=fds@entry=0x7fdd98003070, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3624
#2  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fdd98000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd98000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdda6ffdd40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x1b55de0) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdda6ffe700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 29 (Thread 0x7fdda5ffd700 (LWP 11466)):
#0  g_source_iter_next (iter=iter@entry=0x7fdda5ffcb80, source=source@entry=0x7fdda5ffcb78) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:904
#1  0x00007fdde98f480b in g_main_context_check (context=context@entry=0x7fdd9c000990, max_priority=2147483647, fds=fds@entry=0x7fdd9c002c70, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3602
#2  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fdd9c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd9c000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd9c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdda5ffcd40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x1c202f0) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdda5ffd700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 28 (Thread 0x7fdda4ffc700 (LWP 11467)):
#0  0x00007fdde98f1f2f in g_source_iter_next (iter=iter@entry=0x7fdda4ffbb80, source=source@entry=0x7fdda4ffbb78) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:923
#1  0x00007fdde98f480b in g_main_context_check (context=context@entry=0x7fdd90000990, max_priority=2147483647, fds=fds@entry=0x7fdd90003270, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3602
#2  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fdd90000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd90000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdda4ffbd40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x1d05110) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdda4ffc700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 27 (Thread 0x7fdd977ff700 (LWP 11468)):
#0  0x00007fddedafa2cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdde98f4ee4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fdd8c003270, timeout=-1, context=0x7fdd8c000990) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0x7fdd8c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3776
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd8c000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd8c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdd977fed40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x1dc1a90) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdd977ff700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 26 (Thread 0x7fdd965f6700 (LWP 11469)):
#0  0x00007fddedafa2cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdde98f4ee4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fdd840021d0, timeout=-1, context=0x7fdd84000990) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0x7fdd84000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3776
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd84000990, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdd965f5d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x1e9c670) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdd965f6700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 25 (Thread 0x7fdd955f5700 (LWP 11470)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fddf27f3b34 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7fddf2ae3f40 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007fddf27f3b79 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007fddecefb0a5 in start_thread (arg=0x7fdd955f5700) at pthread_create.c:309
#4  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 24 (Thread 0x7fdd94df4700 (LWP 11471)):
#0  0x00007fddee152490 in g_main_context_iteration@plt () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#2  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdd94df3d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#3  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#4  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x10faba0) at thread/qthread_unix.cpp:345
#5  0x00007fddecefb0a5 in start_thread (arg=0x7fdd94df4700) at pthread_create.c:309
#6  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 23 (Thread 0x7fdd033d7700 (LWP 11472)):
#0  0x00007fddedafa2cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdde98f4ee4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x21100a0, timeout=-1, context=0x2121a80) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0x2121a80, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3776
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x2121a80, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x210a240, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdd033d6d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x20fab00) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdd033d7700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 22 (Thread 0x7fdd01c93700 (LWP 11473)):
#0  0x00007fddee40b4c3 in idleTimerSourcePrepare (source=<optimized out>, timeout=timeout@entry=0x7fdd01c92b74) at kernel/qeventdispatcher_glib.cpp:208
#1  0x00007fdde98f446d in g_main_context_prepare (context=context@entry=0x7fdd8807ace0, priority=priority@entry=0x7fdd01c92c00) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3399
#2  0x00007fdde98f4e0b in g_main_context_iterate (context=context@entry=0x7fdd8807ace0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3761
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd8807ace0, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd88045900, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdd01c92d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x2259b00) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdd01c93700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 21 (Thread 0x7fdd00b52700 (LWP 11474)):
#0  g_mutex_unlock (mutex=0x7fdd84114750) at /build/buildd/glib2.0-2.42.1/./glib/gthread-posix.c:1349
#1  0x00007fdde98f4729 in g_main_context_query (context=context@entry=0x7fdd84114750, max_priority=2147483647, timeout=timeout@entry=0x7fdd00b51c04, fds=fds@entry=0x7fdd8400dad0, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3536
#2  0x00007fdde98f4e5a in g_main_context_iterate (context=context@entry=0x7fdd84114750, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3763
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd84114750, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd84037fe0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdd00b51d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x239aa60) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdd00b52700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 20 (Thread 0x7fdcff814700 (LWP 11475)):
#0  g_main_context_prepare (context=context@entry=0x7fdd8c0dc030, priority=priority@entry=0x7fdcff813c00) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3410
#1  0x00007fdde98f4e0b in g_main_context_iterate (context=context@entry=0x7fdd8c0dc030, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3761
#2  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd8c0dc030, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#3  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd8c0596a0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcff813d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#6  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x24c8640) at thread/qthread_unix.cpp:345
#7  0x00007fddecefb0a5 in start_thread (arg=0x7fdcff814700) at pthread_create.c:309
#8  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 19 (Thread 0x7fdcf8f2a700 (LWP 11476)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fdcfc1eae23 in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7fdcfccc553c <WTF::pageheap_memory+57564>) at wtf/FastMalloc.cpp:2825
#2  0x00007fdcfc1eae49 in WTF::TCMalloc_PageHeap::runScavengerThread (context=0x7fdcfccc553c <WTF::pageheap_memory+57564>) at wtf/FastMalloc.cpp:1993
#3  0x00007fddecefb0a5 in start_thread (arg=0x7fdcf8f2a700) at pthread_create.c:309
#4  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 18 (Thread 0x7fdcb8607700 (LWP 11477)):
#0  0x00007fddedaf5fdd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdde9937ed0 in read (__nbytes=16, __buf=0x7fdcb8606b30, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7fdd8c07fe80) at /build/buildd/glib2.0-2.42.1/./glib/gwakeup.c:210
#3  0x00007fdde98f496c in g_main_context_check (context=context@entry=0x7fdd900033f0, max_priority=2147483647, fds=fds@entry=0x7fdd90003ce0, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3579
#4  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fdd900033f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#5  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd900033f0, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#6  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd90003320, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcb8606d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#8  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#9  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x2670020) at thread/qthread_unix.cpp:345
#10 0x00007fddecefb0a5 in start_thread (arg=0x7fdcb8607700) at pthread_create.c:309
#11 0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 17 (Thread 0x7fdcb7e06700 (LWP 11478)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fdcfb1dfeab in WebCore::IconDatabase::syncThreadMainLoop() () at runtime/Structure.h:185
#2  0x00007fdcfb1e1918 in WebCore::IconDatabase::iconDatabaseSyncThread() () at runtime/Structure.h:185
#3  0x00007fdcfc219731 in WTF::wtfThreadEntryPoint(void*) () at wtf/ThreadingPthreads.cpp:195
#4  0x00007fddecefb0a5 in start_thread (arg=0x7fdcb7e06700) at pthread_create.c:309
#5  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 16 (Thread 0x7fdcb7605700 (LWP 11479)):
#0  0x00007fddedaf5fdd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdde9937ed0 in read (__nbytes=16, __buf=0x7fdcb7604b30, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7fdd90005270) at /build/buildd/glib2.0-2.42.1/./glib/gwakeup.c:210
#3  0x00007fdde98f496c in g_main_context_check (context=context@entry=0x7fdd980031f0, max_priority=2147483647, fds=fds@entry=0x7fdd980068d0, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3579
#4  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fdd980031f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#5  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd980031f0, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#6  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd98003120, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcb7604d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#8  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#9  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x2684f80) at thread/qthread_unix.cpp:345
#10 0x00007fddecefb0a5 in start_thread (arg=0x7fdcb7605700) at pthread_create.c:309
#11 0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 15 (Thread 0x7fdcb599e700 (LWP 11486)):
#0  0x00007fff9d9dfb49 in clock_gettime ()
#1  0x00007fddedb12a9d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fddee234a96 in qt_clock_gettime (ts=0x7fdcb599da30, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:113
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:169
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:178
#5  0x00007fddee409949 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fdda00bf400) at kernel/qtimerinfo_unix.cpp:92
#6  0x00007fddee409eb5 in QTimerInfoList::timerWait (this=0x7fdda00bf400, tm=...) at kernel/qtimerinfo_unix.cpp:387
#7  0x00007fddee40b28e in timerSourcePrepareHelper (timeout=0x7fdcb599db04, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:135
#8  timerSourcePrepare (source=<optimized out>, timeout=timeout@entry=0x7fdcb599db04) at kernel/qeventdispatcher_glib.cpp:168
#9  0x00007fdde98f446d in g_main_context_prepare (context=context@entry=0x7fdda0098640, priority=priority@entry=0x7fdcb599db90) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3399
#10 0x00007fdde98f4e0b in g_main_context_iterate (context=context@entry=0x7fdda0098640, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3761
#11 0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdda0098640, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#12 0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdda00477f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#13 0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcb599dcd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#14 0x00007fddee1764a4 in QThread::exec (this=this@entry=0x1731490) at thread/qthread.cpp:511
#15 0x00007fddf37da346 in QQuickPixmapReader::run (this=0x1731490) at util/qquickpixmapcache.cpp:688
#16 0x00007fddee17b2ee in QThreadPrivate::start (arg=0x1731490) at thread/qthread_unix.cpp:345
#17 0x00007fddecefb0a5 in start_thread (arg=0x7fdcb599e700) at pthread_create.c:309
#18 0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 14 (Thread 0x7fdcb4f1c700 (LWP 11487)):
#0  g_main_context_check (context=context@entry=0x7fddac1746e0, max_priority=2147483647, fds=fds@entry=0x7fddac0bed60, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3609
#1  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fddac1746e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#2  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddac1746e0, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#3  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddac118aa0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcb4f1bcd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fddee1764a4 in QThread::exec (this=this@entry=0x247d770) at thread/qthread.cpp:511
#6  0x00007fddf37da346 in QQuickPixmapReader::run (this=0x247d770) at util/qquickpixmapcache.cpp:688
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x247d770) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdcb4f1c700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 13 (Thread 0x7fdcb421a700 (LWP 11488)):
#0  g_mutex_unlock (mutex=0x7fdda81165e0) at /build/buildd/glib2.0-2.42.1/./glib/gthread-posix.c:1349
#1  0x00007fdde98f4dfe in g_main_context_iterate (context=context@entry=0x7fdda81165e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3759
#2  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdda81165e0, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#3  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdda804b030, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcb4219d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#6  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x261d070) at thread/qthread_unix.cpp:345
#7  0x00007fddecefb0a5 in start_thread (arg=0x7fdcb421a700) at pthread_create.c:309
#8  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 12 (Thread 0x7fdcb3798700 (LWP 11490)):
#0  0x00007fdde9939369 in g_mutex_lock (mutex=mutex@entry=0x7fddb02b31f0) at /build/buildd/glib2.0-2.42.1/./glib/gthread-posix.c:1337
#1  0x00007fdde98f48cc in g_main_context_check (context=context@entry=0x7fddb02b31f0, max_priority=2147483647, fds=fds@entry=0x7fddb027c7c0, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3624
#2  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fddb02b31f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddb02b31f0, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddb003dab0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcb3797d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x2a57210) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdcb3798700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 11 (Thread 0x7fdcb26f7700 (LWP 11491)):
#0  __libc_enable_asynccancel () at ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:65
#1  0x00007fddedaf5fd2 in read () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007fdde9937ed0 in read (__nbytes=16, __buf=0x7fdcb26f6b30, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  g_wakeup_acknowledge (wakeup=0x7fddb02c7620) at /build/buildd/glib2.0-2.42.1/./glib/gwakeup.c:210
#4  0x00007fdde98f496c in g_main_context_check (context=context@entry=0x7fddbc0b82e0, max_priority=2147483647, fds=fds@entry=0x7fddbc116ce0, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3579
#5  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fddbc0b82e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#6  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddbc0b82e0, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#7  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddbc0a84f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#8  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcb26f6d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#9  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#10 0x00007fddee17b2ee in QThreadPrivate::start (arg=0x2b54410) at thread/qthread_unix.cpp:345
#11 0x00007fddecefb0a5 in start_thread (arg=0x7fdcb26f7700) at pthread_create.c:309
#12 0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 10 (Thread 0x7fdcb1606700 (LWP 11492)):
#0  __libc_disable_asynccancel () at ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:98
#1  0x00007fddedafa2d9 in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007fdde98f4ee4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fddb80047c0, timeout=-1, context=0x7fddb8002e40) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:4076
#3  g_main_context_iterate (context=context@entry=0x7fddb8002e40, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3776
#4  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddb8002e40, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#5  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddb80013a0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcb1605d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#7  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#8  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x2c1a870) at thread/qthread_unix.cpp:345
#9  0x00007fddecefb0a5 in start_thread (arg=0x7fdcb1606700) at pthread_create.c:309
#10 0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 9 (Thread 0x7fdcb0515700 (LWP 11493)):
#0  0x00007fddedafa2cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdde98f4ee4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fddc0014ce0, timeout=-1, context=0x7fddc0008470) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0x7fddc0008470, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3776
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddc0008470, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddc00013e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcb0514d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x2d011b0) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdcb0515700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (Thread 0x7fdcaf424700 (LWP 11494)):
#0  QTimerInfoList::timerWait (this=0x7fddcc107ba0, tm=...) at kernel/qtimerinfo_unix.cpp:386
#1  0x00007fddee40b28e in timerSourcePrepareHelper (timeout=0x7fdcaf423b74, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:135
#2  timerSourcePrepare (source=<optimized out>, timeout=timeout@entry=0x7fdcaf423b74) at kernel/qeventdispatcher_glib.cpp:168
#3  0x00007fdde98f446d in g_main_context_prepare (context=context@entry=0x7fddcc0f8770, priority=priority@entry=0x7fdcaf423c00) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3399
#4  0x00007fdde98f4e0b in g_main_context_iterate (context=context@entry=0x7fddcc0f8770, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3761
#5  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddcc0f8770, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#6  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddcc076810, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcaf423d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#8  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#9  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x2e03640) at thread/qthread_unix.cpp:345
#10 0x00007fddecefb0a5 in start_thread (arg=0x7fdcaf424700) at pthread_create.c:309
#11 0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7fdcae333700 (LWP 11495)):
#0  0x00007fdde9939369 in g_mutex_lock (mutex=mutex@entry=0x7fddd8004c70) at /build/buildd/glib2.0-2.42.1/./glib/gthread-posix.c:1337
#1  0x00007fdde98f4ea1 in g_main_context_iterate (context=context@entry=0x7fddd8004c70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3785
#2  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddd8004c70, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#3  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fddd8004490, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcae332d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#6  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x2eb8400) at thread/qthread_unix.cpp:345
#7  0x00007fddecefb0a5 in start_thread (arg=0x7fdcae333700) at pthread_create.c:309
#8  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7fdcad242700 (LWP 11496)):
#0  g_main_context_query (context=context@entry=0x2fbdba0, max_priority=2147483647, timeout=timeout@entry=0x7fdcad241c04, fds=fds@entry=0x2f97d60, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3539
#1  0x00007fdde98f4e5a in g_main_context_iterate (context=context@entry=0x2fbdba0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3763
#2  0x00007fdde98f4ffc in g_main_context_iteration (context=0x2fbdba0, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#3  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x2f98d10, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcad241d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#6  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x2f8ba00) at thread/qthread_unix.cpp:345
#7  0x00007fddecefb0a5 in start_thread (arg=0x7fdcad242700) at pthread_create.c:309
#8  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7fdcac151700 (LWP 11497)):
#0  g_mutex_unlock (mutex=0x7fdd8809efe0) at /build/buildd/glib2.0-2.42.1/./glib/gthread-posix.c:1349
#1  0x00007fdde98f4460 in g_main_context_prepare (context=context@entry=0x7fdd8809efe0, priority=priority@entry=0x7fdcac150c00) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3397
#2  0x00007fdde98f4e0b in g_main_context_iterate (context=context@entry=0x7fdd8809efe0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3761
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd8809efe0, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd88029e70, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdcac150d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x30784e0) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdcac151700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fdca9729700 (LWP 11503)):
#0  g_main_context_check (context=context@entry=0x7fdd8408fe40, max_priority=2147483647, fds=fds@entry=0x7fdd8400ded0, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3584
#1  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fdd8408fe40, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#2  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd8408fe40, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#3  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd840aad90, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdca9728d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#6  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x1c08b00) at thread/qthread_unix.cpp:345
#7  0x00007fddecefb0a5 in start_thread (arg=0x7fdca9729700) at pthread_create.c:309
#8  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fdca8638700 (LWP 11504)):
#0  0x00007fddedafa2cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdde98f4ee4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fdd8c0f5e10, timeout=-1, context=0x7fdd8c114500) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:4076
#2  g_main_context_iterate (context=context@entry=0x7fdd8c114500, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3776
#3  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd8c114500, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#4  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd8c0e9fd0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdca8637d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#7  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x3d3ac80) at thread/qthread_unix.cpp:345
#8  0x00007fddecefb0a5 in start_thread (arg=0x7fdca8638700) at pthread_create.c:309
#9  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fdca4770700 (LWP 11511)):
#0  g_main_context_check (context=context@entry=0x7fdd900a7380, max_priority=2147483647, fds=fds@entry=0x7fdd90135480, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3625
#1  0x00007fdde98f4e83 in g_main_context_iterate (context=context@entry=0x7fdd900a7380, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3778
#2  0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fdd900a7380, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#3  0x00007fddee40be6c in QEventDispatcherGlib::processEvents (this=0x7fdd900590c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fdca476fd40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fddee1764a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#6  0x00007fddee17b2ee in QThreadPrivate::start (arg=0x284b560) at thread/qthread_unix.cpp:345
#7  0x00007fddecefb0a5 in start_thread (arg=0x7fdca4770700) at pthread_create.c:309
#8  0x00007fddedb0477d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fddf3e5b880 (LWP 11448)):
[KCrash Handler]
#5  0x00007fdcfb13667e in WebCore::TextureMapperLayer::addChild(WebCore::TextureMapperLayer*) () at ../WTF/wtf/Vector.h:300
#6  0x00007fdcfb2c5ab6 in WebCore::CoordinatedGraphicsScene::commitSceneState(WebCore::CoordinatedGraphicsState const&) () at heap/CopiedSpaceInlines.h:160
#7  0x00007fdcfb2bf87a in WebCore::CoordinatedGraphicsScene::syncRemoteContent() () at heap/CopiedSpaceInlines.h:160
#8  0x00007fdcfb2c0274 in WebCore::CoordinatedGraphicsScene::paintToCurrentGLContext(WebCore::TransformationMatrix const&, float, WebCore::FloatRect const&, unsigned int) () at heap/CopiedSpaceInlines.h:160
#9  0x00007fdcfadc1c51 in WebKit::ContentsSGNode::render(QSGRenderNode::RenderState const&) () at ../WTF/wtf/Vector.h:300
#10 0x00007fddf380e971 in QSGBatchRenderer::Renderer::renderRenderNode (this=0x41f8350, batch=<optimized out>) at scenegraph/coreapi/qsgbatchrenderer.cpp:2503
#11 0x00007fddf380efc5 in QSGBatchRenderer::Renderer::renderBatches (this=this@entry=0x41f8350) at scenegraph/coreapi/qsgbatchrenderer.cpp:2276
#12 0x00007fddf380f64a in QSGBatchRenderer::Renderer::render (this=<optimized out>) at scenegraph/coreapi/qsgbatchrenderer.cpp:2431
#13 0x00007fddf381b7ee in QSGRenderer::renderScene (this=0x41f8350, bindable=...) at scenegraph/coreapi/qsgrenderer.cpp:259
#14 0x00007fddf381bd67 in QSGRenderer::renderScene (this=this@entry=0x41f8350) at scenegraph/coreapi/qsgrenderer.cpp:218
#15 0x00007fddf382b1c0 in QSGRenderContext::renderNextFrame (this=0x1540730, renderer=0x41f8350, fboId=<optimized out>) at scenegraph/qsgcontext.cpp:356
#16 0x00007fddf38683b2 in QQuickWindowPrivate::renderSceneGraph (this=this@entry=0x3b77bc0, size=...) at items/qquickwindow.cpp:386
#17 0x00007fddf3845f6b in QSGGuiThreadRenderLoop::renderWindow (this=this@entry=0x1558d30, window=0x3b79780) at scenegraph/qsgrenderloop.cpp:370
#18 0x00007fddf3846eb1 in QSGGuiThreadRenderLoop::event (this=0x1558d30, e=<optimized out>) at scenegraph/qsgrenderloop.cpp:466
#19 0x00007fddef08616c in QApplicationPrivate::notify_helper (this=0x1104460, receiver=0x1558d30, e=0x7fff9d8d1760) at kernel/qapplication.cpp:3504
#20 0x00007fddef08b41e in QApplication::notify (this=0x7fff9d8d1b10, receiver=0x1558d30, e=0x7fff9d8d1760) at kernel/qapplication.cpp:3287
#21 0x00007fddee3b481b in QCoreApplication::notifyInternal (this=0x7fff9d8d1b10, receiver=0x1558d30, event=event@entry=0x7fff9d8d1760) at kernel/qcoreapplication.cpp:935
#22 0x00007fddee40ad85 in sendEvent (event=0x7fff9d8d1760, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:237
#23 QTimerInfoList::activateTimers (this=0x1180210) at kernel/qtimerinfo_unix.cpp:643
#24 0x00007fddee40b1b1 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:185
#25 0x00007fdde98f4c5d in g_main_dispatch (context=0x7fddd80016f0) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3111
#26 g_main_context_dispatch (context=context@entry=0x7fddd80016f0) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3710
#27 0x00007fdde98f4f48 in g_main_context_iterate (context=context@entry=0x7fddd80016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3781
#28 0x00007fdde98f4ffc in g_main_context_iteration (context=0x7fddd80016f0, may_block=1) at /build/buildd/glib2.0-2.42.1/./glib/gmain.c:3842
#29 0x00007fddee40be57 in QEventDispatcherGlib::processEvents (this=0x1180090, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#30 0x00007fddee3b2042 in QEventLoop::exec (this=this@entry=0x7fff9d8d19b0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#31 0x00007fddee3b9acc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#32 0x00007fddee8f11dc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1436
#33 0x00007fddef084795 in QApplication::exec () at kernel/qapplication.cpp:2749
#34 0x000000000042f78f in main (argc=3, argv=<optimized out>) at ../../shell/main.cpp:150
Comment 3 Myriam Schweingruber 2014-12-09 19:49:55 UTC 
Setting status to confirmed.
Comment 4 David Edmundson 2014-12-10 17:43:54 UTC 
Clearly a bug in Qt.

Can someone turn this into a small reproducible case with no plasma stuff and file a bug upstream.
Comment 5 Bhushan Shah 2015-05-24 13:19:57 UTC 
*** Bug 346554 has been marked as a duplicate of this bug. ***
Comment 6 David Edmundson 2016-11-04 22:52:36 UTC 
This is against an old version of Qt/Plasma and there has been no update or newer duplicates.

If it still happens, please open a new bug report with a more recent backtrace.