Application: plasmashell (5.4.2)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-27-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed: I just booted my computer when the bug agent appeared. Didn't do anything more.

-- 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 0x7fd0ff9b2800 (LWP 1543))]

Thread 8 (Thread 0x7fd0eb00e700 (LWP 1546)):
#0  0x00007fd0fa1628dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd0fe1a9bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fd0fe1ab74f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fd0ed358a39 in QXcbEventReader::run (this=0x13cf810) at qxcbconnection.cpp:1105
#4  0x00007fd0fa8552be in QThreadPrivate::start (arg=0x13cf810) at thread/qthread_unix.cpp:337
#5  0x00007fd0f99446aa in start_thread (arg=0x7fd0eb00e700) at pthread_create.c:333
#6  0x00007fd0fa16deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fd0e8974700 (LWP 1569)):
#0  0x00007fd0fa1628dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd0f6f0f1ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd0f6f0f2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd0faa8c29b in QEventDispatcherGlib::processEvents (this=0x7fd0dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fd0faa3275a in QEventLoop::exec (this=this@entry=0x7fd0e8973da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd0fa8503d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd0fd078f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd0fa8552be in QThreadPrivate::start (arg=0x1496720) at thread/qthread_unix.cpp:337
#8  0x00007fd0f99446aa in start_thread (arg=0x7fd0e8974700) at pthread_create.c:333
#9  0x00007fd0fa16deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fd0d9354700 (LWP 1574)):
#0  0x00007fd0f6f53869 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd0f6f0e789 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd0f6f0f11b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd0f6f0f2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd0faa8c29b in QEventDispatcherGlib::processEvents (this=0x7fd0d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fd0faa3275a in QEventLoop::exec (this=this@entry=0x7fd0d9353da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd0fa8503d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd0fd078f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fd0fa8552be in QThreadPrivate::start (arg=0x194f910) at thread/qthread_unix.cpp:337
#9  0x00007fd0f99446aa in start_thread (arg=0x7fd0d9354700) at pthread_create.c:333
#10 0x00007fd0fa16deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fd0d2a46700 (LWP 1582)):
#0  0x00007fd0fa15e49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd0f6f524e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd0f6f0ecd4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd0f6f0f190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd0f6f0f2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd0faa8c29b in QEventDispatcherGlib::processEvents (this=0x7fd0c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007fd0faa3275a in QEventLoop::exec (this=this@entry=0x7fd0d2a45da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fd0fa8503d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fd0fd078f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fd0fa8552be in QThreadPrivate::start (arg=0x19ad3e0) at thread/qthread_unix.cpp:337
#10 0x00007fd0f99446aa in start_thread (arg=0x7fd0d2a46700) at pthread_create.c:333
#11 0x00007fd0fa16deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fd0d11ca700 (LWP 1583)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd0ff404114 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fd0ff404159 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fd0f99446aa in start_thread (arg=0x7fd0d11ca700) at pthread_create.c:333
#4  0x00007fd0fa16deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fd0c9333700 (LWP 1753)):
#0  0x00007fd0f6f53884 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd0f6f0e800 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd0f6f0f11b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd0f6f0f2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd0faa8c29b in QEventDispatcherGlib::processEvents (this=0x7fd040002d70, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fd0faa3275a in QEventLoop::exec (this=this@entry=0x7fd0c9332d50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd0fa8503d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd0fd9f4ef6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fd0fa8552be in QThreadPrivate::start (arg=0x1407590) at thread/qthread_unix.cpp:337
#9  0x00007fd0f99446aa in start_thread (arg=0x7fd0c9333700) at pthread_create.c:333
#10 0x00007fd0fa16deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fd036d83700 (LWP 1758)):
#0  0x00007fd0fa1628dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd0f6f0f1ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd0f6f0f2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd0faa8c29b in QEventDispatcherGlib::processEvents (this=0x7fd0300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fd0faa3275a in QEventLoop::exec (this=this@entry=0x7fd036d82d80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd0fa8503d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd03901a8f7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fd0fa8552be in QThreadPrivate::start (arg=0x4c5dda0) at thread/qthread_unix.cpp:337
#8  0x00007fd0f99446aa in start_thread (arg=0x7fd036d83700) at pthread_create.c:333
#9  0x00007fd0fa16deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fd0ff9b2800 (LWP 1543)):
[KCrash Handler]
#6  gen8_update_renderbuffer_surface (brw=0x257dce8, rb=0x59ded50, layered=false, unit=0, surf_index=0) at ../../../../../../../src/mesa/drivers/dri/i965/gen8_surface_state.c:390
#7  0x00007fd0e2107309 in brw_update_renderbuffer_surfaces (brw=0x257dce8, fb=0x5f22e00, render_target_start=0, surf_offset=0x25a29c4) at ../../../../../../../src/mesa/drivers/dri/i965/brw_wm_surface_state.c:753
#8  0x00007fd0e21073a1 in update_renderbuffer_surfaces (brw=0x257dce8) at ../../../../../../../src/mesa/drivers/dri/i965/brw_wm_surface_state.c:775
#9  0x00007fd0e20dcf69 in check_and_emit_atom (atom=0x25a3108, state=<synthetic pointer>, brw=0x257dce8) at ../../../../../../../src/mesa/drivers/dri/i965/brw_state_upload.c:667
#10 brw_upload_pipeline_state (pipeline=BRW_RENDER_PIPELINE, brw=0x257dce8) at ../../../../../../../src/mesa/drivers/dri/i965/brw_state_upload.c:768
#11 brw_upload_render_state (brw=brw@entry=0x257dce8) at ../../../../../../../src/mesa/drivers/dri/i965/brw_state_upload.c:790
#12 0x00007fd0e2066252 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=0x257dce8) at ../../../../../../../src/mesa/drivers/dri/i965/brw_draw.c:516
#13 brw_draw_prims (ctx=0x257dce8, 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 0x00007fd0e1ea233a in vbo_draw_arrays (ctx=0x257dce8, 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 0x00007fd0e1ea25a3 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 0x00007fd0e1ea3a65 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 0x00007fd0e1f1c440 in meta_clear (ctx=ctx@entry=0x257dce8, buffers=buffers@entry=34, glsl=glsl@entry=true) at ../../../../src/mesa/drivers/common/meta.c:1814
#18 0x00007fd0e1f1c91a in _mesa_meta_glsl_Clear (ctx=ctx@entry=0x257dce8, buffers=buffers@entry=34) at ../../../../src/mesa/drivers/common/meta.c:1502
#19 0x00007fd0e2053e4b in brw_clear (ctx=0x257dce8, mask=0) at ../../../../../../../src/mesa/drivers/dri/i965/brw_clear.c:264
#20 0x00007fd0fda2737a in QSGBatchRenderer::Renderer::renderBatches() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007fd0fda2bb3a in QSGBatchRenderer::Renderer::render() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007fd0fda36a1c in QSGRenderer::renderScene(QSGBindable const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007fd0fda36e9b in QSGRenderer::renderScene(unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#24 0x00007fd0fda455be in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#25 0x00007fd0fda8f20c in QQuickWindowPrivate::renderSceneGraph(QSize const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007fd0fda5fbac in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00007fd0fda606d1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#28 0x00007fd0fb512b8c in QApplicationPrivate::notify_helper (this=this@entry=0x13b8480, receiver=receiver@entry=0x16d0ca0, e=e@entry=0x7ffe9cb8d660) at kernel/qapplication.cpp:3720
#29 0x00007fd0fb518230 in QApplication::notify (this=0x7ffe9cb8da20, receiver=0x16d0ca0, e=0x7ffe9cb8d660) at kernel/qapplication.cpp:3503
#30 0x00007fd0faa34f1b in QCoreApplication::notifyInternal (this=0x7ffe9cb8da20, receiver=0x16d0ca0, event=event@entry=0x7ffe9cb8d660) at kernel/qcoreapplication.cpp:935
#31 0x00007fd0faa8b09d in QCoreApplication::sendEvent (event=0x7ffe9cb8d660, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#32 QTimerInfoList::activateTimers (this=0x13f70b0) at kernel/qtimerinfo_unix.cpp:635
#33 0x00007fd0faa8b5d9 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#34 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:224
#35 0x00007fd0f6f0eff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fd0f6f0f250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fd0f6f0f2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007fd0faa8c27f in QEventDispatcherGlib::processEvents (this=0x13eb4f0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#39 0x00007fd0faa3275a in QEventLoop::exec (this=this@entry=0x7ffe9cb8d8a0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#40 0x00007fd0faa3a2cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#41 0x00007fd0fad4f00c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#42 0x00007fd0fb50f025 in QApplication::exec () at kernel/qapplication.cpp:2956
#43 0x00000000004322c3 in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:176

Possible duplicates by query: bug 358788, bug 358676, bug 358318, bug 354604.

Reported using DrKonqi