Bug 387244

Summary:	Plasmashell (formerly KWin) appears to crash whenever Plasma is started
Product:	[Plasma] plasmashell	Reporter:	raphg1999
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	plasma-bugs-null
Priority:	NOR
Version First Reported In:	5.8.7
Target Milestone:	1.0
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description raphg1999 2017-11-23 23:44:47 UTC

Application: kwin_x11 (5.8.7)

Qt Version: 5.6.2
Frameworks Version: 5.32.0
Operating System: Linux 4.4.76-1-default x86_64
Distribution: "openSUSE Leap 42.3"

-- Information about the crash:
- What I was doing when the application crashed:
I just logged in and fired up Plasma, the desktop didn't show up except for the (unresponsive) button at the top left corner...

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7c7dc8e940 (LWP 5209))]

Thread 5 (Thread 0x7f7c5cc57700 (LWP 5373)):
#0  0x00007fffbebf2b62 in clock_gettime ()
#1  0x00007f7c7d409576 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f7c7a964a46 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007f7c7aaca809 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007f7c7aac9c51 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f7c7aaca3a7 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f7c7aa79bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f7c7a8b4f5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f7c754683d8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f7c7a8b9a29 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f7c7d6be744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f7c7d3fcaad in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f7c412dd700 (LWP 5281)):
#0  0x00007f7c7d6c30bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7c79a4893b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f7c79a48969 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f7c7d6be744 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f7c7d3fcaad in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f7c57de0700 (LWP 5276)):
#0  0x00007fffbebf2b62 in clock_gettime ()
#1  0x00007f7c7d409576 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f7c7a964a46 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007f7c7aaca809 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007f7c7aac9c51 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f7c7aaca3a7 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f7c7aa79bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f7c7a8b4f5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f7c754683d8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f7c7a8b9a29 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f7c7d6be744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f7c7d3fcaad in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f7c66b4d700 (LWP 5232)):
#0  0x00007f7c7d6c5d2d in read () at /lib64/libpthread.so.0
#1  0x00007f7c736fc750 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f7c736bbe49 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f7c736bc2a8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f7c736bc42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f7c7aacc1ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f7c7aa79bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f7c7a8b4f5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f7c7463e295 in  () at /usr/lib64/libQt5DBus.so.5
#9  0x00007f7c7a8b9a29 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f7c7d6be744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f7c7d3fcaad in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f7c7dc8e940 (LWP 5209)):
[KCrash Handler]
#6  0x00007f7c55ce3d25 in  () at /usr/lib64/dri/nouveau_dri.so
#7  0x00007f7c55a1a587 in  () at /usr/lib64/dri/nouveau_dri.so
#8  0x00007f7c55a16d26 in  () at /usr/lib64/dri/nouveau_dri.so
#9  0x00007f7c55a35272 in  () at /usr/lib64/dri/nouveau_dri.so
#10 0x00007f7c559f6fed in  () at /usr/lib64/dri/nouveau_dri.so
#11 0x00007f7c559f72bb in  () at /usr/lib64/dri/nouveau_dri.so
#12 0x00007f7c762bfcf9 in KWin::GLVertexBuffer::draw(QRegion const&, unsigned int, int, int, bool) () at /usr/lib64/libkwinglutils.so.9
#13 0x00007f7c762c0109 in KWin::GLVertexBuffer::render(QRegion const&, unsigned int, bool) () at /usr/lib64/libkwinglutils.so.9
#14 0x00007f7c762c016d in KWin::GLVertexBuffer::render(unsigned int) () at /usr/lib64/libkwinglutils.so.9
#15 0x00007f7c7cfaf951 in  () at /usr/lib64/libkwin.so.5
#16 0x00007f7c7cfb6585 in KWin::SceneOpenGL::paintBackground(QRegion) () at /usr/lib64/libkwin.so.5
#17 0x00007f7c7cfa1189 in KWin::Scene::paintSimpleScreen(int, QRegion) () at /usr/lib64/libkwin.so.5
#18 0x00007f7c7cfaf423 in  () at /usr/lib64/libkwin.so.5
#19 0x00007f7c7cfa3285 in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib64/libkwin.so.5
#20 0x00007f7c7cfd1460 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib64/libkwin.so.5
#21 0x00007f7c79df09e4 in  () at /usr/lib64/libkwin4_effect_builtins.so.1
#22 0x00007f7c7cfd1420 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib64/libkwin.so.5
#23 0x00007f7c7a25b7df in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib64/libkwineffects.so.9
#24 0x00007f7c7cfd1420 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib64/libkwin.so.5
#25 0x00007f7c7a25b7df in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib64/libkwineffects.so.9
#26 0x00007f7c7cfd1420 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib64/libkwin.so.5
#27 0x00007f7c7cfa2f28 in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&) () at /usr/lib64/libkwin.so.5
#28 0x00007f7c7cfb711c in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () at /usr/lib64/libkwin.so.5
#29 0x00007f7c7cf9617a in KWin::Compositor::performCompositing() () at /usr/lib64/libkwin.so.5
#30 0x00007f7c7aaa6bf4 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#31 0x00007f7c7b77c28c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#32 0x00007f7c7b7808ea in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#33 0x00007f7c7aa7bbe5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#34 0x00007f7c7aacbafe in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#35 0x00007f7c7aaca448 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#36 0x00007f7c64864e3d in  () at /usr/lib64/libQt5XcbQpa.so.5
#37 0x00007f7c7aa79bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#38 0x00007f7c7aa81ae6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#39 0x00007f7c7d8dc9cc in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#40 0x00007f7c7d3336e5 in __libc_start_main () at /lib64/libc.so.6
#41 0x0000000000400809 in _start ()

Reported using DrKonqi

Comment 1 Martin Flöser 2017-11-24 05:14:45 UTC

Crashes in the nouveau driver. Please report to Mesa developers.

Comment 2 raphg1999 2017-11-26 09:17:13 UTC

From what I can see, KWin just crashes once at startup and if I restart it manually, it works fine. 
What's still crashing every time is plasmashell, with a segmentation fault at nouveau_dri.so. I can still manage to fire it up pretty fine by forcing a full software opengl rendering on my session.
However, everything else, including games, works fine with mesa right now for me, so how could the problem come from mesa ?

Comment 3 raphg1999 2017-11-26 09:18:34 UTC

No DrKonqi prompt shows up when plasmashell crashes though...