| Summary: | kwin_wayland crashes under Wayland, unless KWIN_COMPOSE=Q is set in the environment | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | bluescreenavenger |
| Component: | platform-wayland-nested | Assignee: | Unassigned bugs mailing-list <unassigned-bugs> |
| Status: | RESOLVED FIXED | ||
| Severity: | crash | Keywords: | drkonqi |
| Priority: | NOR | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | unspecified | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
This specific issue should have been fixed with: commit f1f87c7a7d79175a5296b1f4acb976b653e8eb68 Author: Martin Gräßlin <mgraesslin@kde.org> Date: Mon Feb 23 13:17:46 2015 +0100 Guard access to Display in GLPlatform::getXServerVersion On wayland OpenGL might get initialized before we have a connection to the XServer and we might only have an xcb connection. So let's guard the access. |
Application: kwin_wayland (5.3.90) (Compiled from sources) Qt Version: 5.5.0 Operating System: Linux 3.19.0-18-generic i686 Distribution: Ubuntu 15.04 -- Information about the crash: It seems that when using the Wayland backened ( --windowed ) kwin_wayland must be started with KWIN_COMPOSE=Q I also have to remove the KWinCompositingIsUnsafe from the .config file in order to get it to try again. The crash can be reproduced every time. -- Backtrace: Application: KWin (kwin_wayland), signal: Segmentation fault Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0xb1901780 (LWP 12222))] Thread 3 (Thread 0xb1745b40 (LWP 12224)): #0 0xb76bf07b in __libc_enable_asynccancel () at ../nptl/cancellation.c:41 #1 0xb76a73c1 in poll () at ../sysdeps/unix/syscall-template.S:81 #2 0xb42530e0 in poll (__timeout=-1, __nfds=1, __fds=0xb0e06ea0) at /usr/include/i386-linux-gnu/bits/poll2.h:46 #3 g_poll (fds=0xb0e06ea0, nfds=1, timeout=-1) at gpoll.c:124 #4 0xb4243fa4 in g_main_context_poll (priority=<optimized out>, n_fds=<optimized out>, fds=<optimized out>, timeout=<optimized out>, context=<optimized out>) at gmain.c:4103 #5 g_main_context_iterate (context=0xb0e00f00, block=2, block@entry=1, dispatch=1, self=<optimized out>) at gmain.c:3803 #6 0xb42440e6 in g_main_context_iteration (context=0xb0e00f00, may_block=1) at gmain.c:3869 #7 0xb612bb4c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/lib/libQt5Core.so.5 #8 0xb60cd2d3 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/lib/libQt5Core.so.5 #9 0xb60cd772 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/lib/libQt5Core.so.5 #10 0xb5ee864d in QThread::exec() () from /opt/lib/libQt5Core.so.5 #11 0xb5ee8728 in QThread::run() () from /opt/lib/libQt5Core.so.5 #12 0xb5eedb0b in ?? () from /opt/lib/libQt5Core.so.5 #13 0xb72611aa in start_thread (arg=0xb1745b40) at pthread_create.c:333 #14 0xb76b1fde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122 Thread 2 (Thread 0xb0aa6b40 (LWP 12225)): #0 0xb612af70 in ?? () from /opt/lib/libQt5Core.so.5 #1 0xb42438f9 in g_main_context_check (context=0xaf7004d8, max_priority=-1351613224, fds=0xb0aa60bc, n_fds=1) at gmain.c:3649 #2 0xb4243f3a in g_main_context_iterate (context=0xaf7004d8, block=block@entry=1, dispatch=1, self=<optimized out>) at gmain.c:3805 #3 0xb42440e6 in g_main_context_iteration (context=0xaf7004d8, may_block=1) at gmain.c:3869 #4 0xb612bb4c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/lib/libQt5Core.so.5 #5 0xb60cd2d3 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/lib/libQt5Core.so.5 #6 0xb60cd772 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/lib/libQt5Core.so.5 #7 0xb5ee864d in QThread::exec() () from /opt/lib/libQt5Core.so.5 #8 0xb5ee8728 in QThread::run() () from /opt/lib/libQt5Core.so.5 #9 0xb5eedb0b in ?? () from /opt/lib/libQt5Core.so.5 #10 0xb72611aa in start_thread (arg=0xb0aa6b40) at pthread_create.c:333 #11 0xb76b1fde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122 Thread 1 (Thread 0xb1901780 (LWP 12222)): [KCrash Handler] #6 0xb764050a in __GI_strstr (haystack_start=0x1 <error: Cannot access memory at address 0x1>, needle_start=0xb4e6d1cf "X.Org") at strstr.c:63 #7 0xb4e5bd87 in KWin::GLPlatform::detect(KWin::OpenGLPlatformInterface) () from /opt/lib/i386-linux-gnu/libkwinglutils.so.6 #8 0xb749af22 in KWin::AbstractEglBackend::initKWinGL() () from /opt/lib/i386-linux-gnu/libkwin.so.5 #9 0xb0ab8455 in KWin::EglWaylandBackend::EglWaylandBackend(KWin::Wayland::WaylandBackend*) () from /opt/lib/i386-linux-gnu/plugins/org.kde.kwin.waylandbackends/KWinWaylandWaylandBackend.so #10 0xb0ab6365 in KWin::Wayland::WaylandBackend::createOpenGLBackend() () from /opt/lib/i386-linux-gnu/plugins/org.kde.kwin.waylandbackends/KWinWaylandWaylandBackend.so #11 0xb73fa117 in KWin::SceneOpenGL::createScene(QObject*) () from /opt/lib/i386-linux-gnu/libkwin.so.5 #12 0xb73cae02 in KWin::Compositor::slotCompositingOptionsInitialized() () from /opt/lib/i386-linux-gnu/libkwin.so.5 #13 0xb73cbca3 in KWin::Compositor::setup() () from /opt/lib/i386-linux-gnu/libkwin.so.5 #14 0xb73cce61 in QtPrivate::QFunctorSlotObject<KWin::Compositor::Compositor(QObject*)::{lambda(bool)#1}, 1, QtPrivate::List<bool>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) () from /opt/lib/i386-linux-gnu/libkwin.so.5 #15 0xb60ff450 in QMetaCallEvent::placeMetaCall(QObject*) () from /opt/lib/libQt5Core.so.5 #16 0xb6102c13 in QObject::event(QEvent*) () from /opt/lib/libQt5Core.so.5 #17 0xb6adefda in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /opt/lib/libQt5Widgets.so.5 #18 0xb6ae4879 in QApplication::notify(QObject*, QEvent*) () from /opt/lib/libQt5Widgets.so.5 #19 0xb735ab2a in KWin::Application::notify(QObject*, QEvent*) () from /opt/lib/i386-linux-gnu/libkwin.so.5 #20 0xb77ae5c5 in KWin::ApplicationWayland::notify(QObject*, QEvent*) () from /opt/lib/i386-linux-gnu/libkdeinit5_kwin_wayland.so #21 0xb60d016a in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /opt/lib/libQt5Core.so.5 #22 0xb60d274c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /opt/lib/libQt5Core.so.5 #23 0xb6128e94 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/lib/libQt5Core.so.5 #24 0xb77ae8de in KWin::EventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/lib/i386-linux-gnu/libkdeinit5_kwin_wayland.so #25 0xb60cd2d3 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/lib/libQt5Core.so.5 #26 0xb60cd772 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/lib/libQt5Core.so.5 #27 0xb60d5db5 in QCoreApplication::exec() () from /opt/lib/libQt5Core.so.5 #28 0xb64601e1 in QGuiApplication::exec() () from /opt/lib/libQt5Gui.so.5 #29 0xb6ada4b4 in QApplication::exec() () from /opt/lib/libQt5Widgets.so.5 #30 0xb77ad018 in kdemain () from /opt/lib/i386-linux-gnu/libkdeinit5_kwin_wayland.so #31 0x080485b7 in main () Reported using DrKonqi