Bug 352180

Application: plasmashell (5.4.0)

Qt Version: 5.4.2
Operating System: Linux 4.1.0-3-generic x86_64
Distribution: Ubuntu Wily Werewolf (development branch)

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

Switching between virtual desktops.

- Custom settings of the application:

Desktop Cube Animation under Desktop Effects is enabled.  Will test with different DTE enabled.

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 0x7f56bb345800 (LWP 2026))]

Thread 8 (Thread 0x7f56a69c5700 (LWP 2028)):
#0  0x00007f56b5b1b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f56b9b35bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f56b9b3774f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f56a8d0f9e9 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#4  0x00007f56b620d25e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f56b52fd6aa in start_thread (arg=0x7f56a69c5700) at pthread_create.c:333
#6  0x00007f56b5b26eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f569ffff700 (LWP 2032)):
#0  0x00007f56b5b1b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f56b28c617c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56b28c628c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56b6443e1b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f56b63ea2da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f56b6208374 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56b8a05f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f56b620d25e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f56b52fd6aa in start_thread (arg=0x7f569ffff700) at pthread_create.c:333
#9  0x00007f56b5b26eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f5694f46700 (LWP 2033)):
#0  0x00007f56b6443373 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f56b28c570d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56b28c60ab in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56b28c628c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f56b6443e1b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f56b63ea2da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56b6208374 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f56b8a05f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f56b620d25e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f56b52fd6aa in start_thread (arg=0x7f5694f46700) at pthread_create.c:333
#10 0x00007f56b5b26eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f568e68d700 (LWP 2037)):
#0  0x00007f56b5b1b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f56b28c617c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56b28c628c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56b6443e1b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f56b63ea2da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f56b6208374 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56b8a05f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f56b620d25e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f56b52fd6aa in start_thread (arg=0x7f568e68d700) at pthread_create.c:333
#9  0x00007f56b5b26eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f568cd95700 (LWP 2038)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f56bad93114 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f56bad93159 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f56b52fd6aa in start_thread (arg=0x7f568cd95700) at pthread_create.c:333
#4  0x00007f56b5b26eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f56863b9700 (LWP 2039)):
#0  0x00007f56b5b1749d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f56b2909810 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56b28c5c64 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56b28c6120 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f56b28c628c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f56b6443e1b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56b63ea2da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f56b6208374 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f56b9380e66 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f56b620d25e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f56b52fd6aa in start_thread (arg=0x7f56863b9700) at pthread_create.c:333
#11 0x00007f56b5b26eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f55f0b0d700 (LWP 2041)):
#0  0x00007f56b5b1749d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f56b2909810 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56b28c5c64 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56b28c6120 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f56b28c628c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f56b6443e1b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56b63ea2da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f56b6208374 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f55f2da76b7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007f56b620d25e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f56b52fd6aa in start_thread (arg=0x7f55f0b0d700) at pthread_create.c:333
#11 0x00007f56b5b26eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f56bb345800 (LWP 2026)):
[KCrash Handler]
#6  brw_meta_fast_clear (brw=brw@entry=0x2903fa8, fb=fb@entry=0x49af6b0, buffers=buffers@entry=34, partial_clear=partial_clear@entry=false) at ../../../../../../../src/mesa/drivers/dri/i965/brw_meta_fast_clear.c:446
#7  0x00007f569dbaf06c in brw_clear (ctx=0x2903fa8, mask=34) at ../../../../../../../src/mesa/drivers/dri/i965/brw_clear.c:246
#8  0x00007f56b93b339a in QSGBatchRenderer::Renderer::renderBatches() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f56b93b7b5a in QSGBatchRenderer::Renderer::render() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f56b93c2a3c in QSGRenderer::renderScene(QSGBindable const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f56b93c2ebb in QSGRenderer::renderScene(unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f56b93d15de in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f56b941b22c in QQuickWindowPrivate::renderSceneGraph(QSize const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f56b93ebbcc in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f56b93ec6f1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f56b6ecab8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f56b6ed0230 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f56b63eca9b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f56b6442c1d in QTimerInfoList::activateTimers() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f56b6443121 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f56b28c5f87 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f56b28c61e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f56b28c628c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f56b6443dff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f56b63ea2da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f56b63f1e4c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x0000000000432063 in main (argc=4, argv=<optimized out>) at ../../shell/main.cpp:176

Possible duplicates by query: bug 352175, bug 352172, bug 352142, bug 352132, bug 352114.

Reported using DrKonqi