Application: plasmashell (5.4.2)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-34-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed:
Plasma crashed when I changed activity and launched Steam. I didn't see any problem until the daemon appeared.

-- 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 0x7fbd4c2cb800 (LWP 1540))]

Thread 8 (Thread 0x7fbd37921700 (LWP 1542)):
#0  0x00007fbd46a7d88d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fbd4aac4bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fbd4aac674f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fbd39c6ba39 in QXcbEventReader::run (this=0x2539810) at qxcbconnection.cpp:1105
#4  0x00007fbd471702be in QThreadPrivate::start (arg=0x2539810) at thread/qthread_unix.cpp:337
#5  0x00007fbd4625f6aa in start_thread (arg=0x7fbd37921700) at pthread_create.c:333
#6  0x00007fbd46a88e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fbd35285700 (LWP 1569)):
#0  0x00007fbd46a7d88d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fbd4382a1ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbd4382a2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbd473a729b in QEventDispatcherGlib::processEvents (this=0x7fbd280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fbd4734d75a in QEventLoop::exec (this=this@entry=0x7fbd35284da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fbd4716b3d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fbd49993f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fbd471702be in QThreadPrivate::start (arg=0x26009d0) at thread/qthread_unix.cpp:337
#8  0x00007fbd4625f6aa in start_thread (arg=0x7fbd35285700) at pthread_create.c:333
#9  0x00007fbd46a88e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fbd25b6f700 (LWP 1571)):
#0  0x00007fbd43829d50 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fbd4382a250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbd4382a2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbd473a729b in QEventDispatcherGlib::processEvents (this=0x7fbd200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fbd4734d75a in QEventLoop::exec (this=this@entry=0x7fbd25b6eda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fbd4716b3d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fbd49993f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fbd471702be in QThreadPrivate::start (arg=0x2a53370) at thread/qthread_unix.cpp:337
#8  0x00007fbd4625f6aa in start_thread (arg=0x7fbd25b6f700) at pthread_create.c:333
#9  0x00007fbd46a88e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fbd1f25c700 (LWP 1580)):
#0  0x00007fbd46a7d88d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fbd4382a1ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbd4382a2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbd473a729b in QEventDispatcherGlib::processEvents (this=0x7fbd100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fbd4734d75a in QEventLoop::exec (this=this@entry=0x7fbd1f25bda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fbd4716b3d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fbd49993f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fbd471702be in QThreadPrivate::start (arg=0x2b0f050) at thread/qthread_unix.cpp:337
#8  0x00007fbd4625f6aa in start_thread (arg=0x7fbd1f25c700) at pthread_create.c:333
#9  0x00007fbd46a88e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fbd1da18700 (LWP 1591)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fbd4bd1f114 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fbd4bd1f159 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fbd4625f6aa in start_thread (arg=0x7fbd1da18700) at pthread_create.c:333
#4  0x00007fbd46a88e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fbd153ba700 (LWP 1623)):
#0  0x00007fbd4386e884 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fbd43829770 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbd4382a11b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbd4382a2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fbd473a729b in QEventDispatcherGlib::processEvents (this=0x7fbc840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fbd4734d75a in QEventLoop::exec (this=this@entry=0x7fbd153b9d50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fbd4716b3d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fbd4a30fef6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fbd471702be in QThreadPrivate::start (arg=0x2df7c50) at thread/qthread_unix.cpp:337
#9  0x00007fbd4625f6aa in start_thread (arg=0x7fbd153ba700) at pthread_create.c:333
#10 0x00007fbd46a88e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fbd15bbb700 (LWP 1764)):
#0  0x00007fbd46a7944d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fbd4386d4e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbd43829cd4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbd4382a190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fbd4382a2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fbd473a729b in QEventDispatcherGlib::processEvents (this=0x7fbc8c003c00, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007fbd4734d75a in QEventLoop::exec (this=this@entry=0x7fbd15bbad80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fbd4716b3d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fbc8860c8f7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007fbd471702be in QThreadPrivate::start (arg=0x601b300) at thread/qthread_unix.cpp:337
#10 0x00007fbd4625f6aa in start_thread (arg=0x7fbd15bbb700) at pthread_create.c:333
#11 0x00007fbd46a88e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fbd4c2cb800 (LWP 1540)):
[KCrash Handler]
#6  gen8_update_renderbuffer_surface (brw=0x3922c28, rb=0x7036100, layered=false, unit=0, surf_index=0) at ../../../../../../../src/mesa/drivers/dri/i965/gen8_surface_state.c:390
#7  0x00007fbd2e9de309 in brw_update_renderbuffer_surfaces (brw=0x3922c28, fb=0x76c9550, render_target_start=0, surf_offset=0x3947904) at ../../../../../../../src/mesa/drivers/dri/i965/brw_wm_surface_state.c:753
#8  0x00007fbd2e9de3a1 in update_renderbuffer_surfaces (brw=0x3922c28) at ../../../../../../../src/mesa/drivers/dri/i965/brw_wm_surface_state.c:775
#9  0x00007fbd2e9b3f69 in check_and_emit_atom (atom=0x3948048, state=<synthetic pointer>, brw=0x3922c28) at ../../../../../../../src/mesa/drivers/dri/i965/brw_state_upload.c:667
#10 brw_upload_pipeline_state (pipeline=BRW_RENDER_PIPELINE, brw=0x3922c28) at ../../../../../../../src/mesa/drivers/dri/i965/brw_state_upload.c:768
#11 brw_upload_render_state (brw=brw@entry=0x3922c28) at ../../../../../../../src/mesa/drivers/dri/i965/brw_state_upload.c:790
#12 0x00007fbd2e93d252 in brw_try_draw_prims (indirect=<optimized out>, max_index=<optimized out>, min_index=<optimized out>, ib=<optimized out>, nr_prims=<optimized out>, prims=<optimized out>, arrays=<optimized out>, ctx=0x3922c28) at ../../../../../../../src/mesa/drivers/dri/i965/brw_draw.c:516
#13 brw_draw_prims (ctx=0x3922c28, prims=<optimized out>, nr_prims=<optimized out>, ib=<optimized out>, index_bounds_valid=<optimized out>, min_index=0, max_index=3, unused_tfb_object=0x0, stream=0, indirect=0x0) at ../../../../../../../src/mesa/drivers/dri/i965/brw_draw.c:606
#14 0x00007fbd2e77933a in vbo_draw_arrays (ctx=0x3922c28, mode=mode@entry=6, start=start@entry=0, count=count@entry=4, numInstances=numInstances@entry=1, baseInstance=baseInstance@entry=0) at ../../../../src/mesa/vbo/vbo_exec_array.c:645
#15 0x00007fbd2e7795a3 in vbo_exec_DrawArrays (mode=mode@entry=6, start=start@entry=0, count=count@entry=4) at ../../../../src/mesa/vbo/vbo_exec_array.c:797
#16 0x00007fbd2e77aa65 in _mesa_DrawArrays (mode=mode@entry=6, first=first@entry=0, count=count@entry=4) at ../../../../src/mesa/vbo/vbo_exec_array.c:1854
#17 0x00007fbd2e7f3440 in meta_clear (ctx=ctx@entry=0x3922c28, buffers=buffers@entry=34, glsl=glsl@entry=true) at ../../../../src/mesa/drivers/common/meta.c:1814
#18 0x00007fbd2e7f391a in _mesa_meta_glsl_Clear (ctx=ctx@entry=0x3922c28, buffers=buffers@entry=34) at ../../../../src/mesa/drivers/common/meta.c:1502
#19 0x00007fbd2e92ae4b in brw_clear (ctx=0x3922c28, mask=0) at ../../../../../../../src/mesa/drivers/dri/i965/brw_clear.c:264
#20 0x00007fbd4a34237a in QSGBatchRenderer::Renderer::renderBatches() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007fbd4a346b3a in QSGBatchRenderer::Renderer::render() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007fbd4a351a1c in QSGRenderer::renderScene(QSGBindable const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007fbd4a351e9b in QSGRenderer::renderScene(unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#24 0x00007fbd4a3605be in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#25 0x00007fbd4a3aa20c in QQuickWindowPrivate::renderSceneGraph(QSize const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007fbd4a37abac in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00007fbd4a37b6d1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#28 0x00007fbd47e2db8c in QApplicationPrivate::notify_helper (this=this@entry=0x2522480, receiver=receiver@entry=0x27da0d0, e=e@entry=0x7ffdd1a703d0) at kernel/qapplication.cpp:3720
#29 0x00007fbd47e33230 in QApplication::notify (this=0x7ffdd1a70790, receiver=0x27da0d0, e=0x7ffdd1a703d0) at kernel/qapplication.cpp:3503
#30 0x00007fbd4734ff1b in QCoreApplication::notifyInternal (this=0x7ffdd1a70790, receiver=0x27da0d0, event=event@entry=0x7ffdd1a703d0) at kernel/qcoreapplication.cpp:935
#31 0x00007fbd473a609d in QCoreApplication::sendEvent (event=0x7ffdd1a703d0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#32 QTimerInfoList::activateTimers (this=0x2561110) at kernel/qtimerinfo_unix.cpp:635
#33 0x00007fbd473a65a1 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#34 0x00007fbd43829ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fbd4382a250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fbd4382a2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fbd473a727f in QEventDispatcherGlib::processEvents (this=0x2555520, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#38 0x00007fbd4734d75a in QEventLoop::exec (this=this@entry=0x7ffdd1a70610, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#39 0x00007fbd473552cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#40 0x00007fbd4766a00c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#41 0x00007fbd47e2a025 in QApplication::exec () at kernel/qapplication.cpp:2956
#42 0x00000000004322c3 in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:176

Possible duplicates by query: bug 359953, bug 359635, bug 359469, bug 358788, bug 358676.

Reported using DrKonqi