https://bugs.kde.org/show_bug.cgi?id=381375
Bug ID: 381375
Summary: KWin crashed on teardown after turning off and back on
compositing
Product: kwin
Version: unspecified
Platform: Compiled Sources
OS: Linux
Status: UNCONFIRMED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: k...@privat.broulik.de
Target Milestone: ---
Application: kwin_x11 (5.10.90)
(Compiled from sources)
Qt Version: 5.9.0
Frameworks Version: 5.35.0
Operating System: Linux 4.8.0-54-generic x86_64
Distribution: KDE neon Developer Edition
-- Information about the crash:
- What I was doing when the application crashed:
Pressed Alt+Shift+F12 twice (ie. turn off compositing and back on)
Then I noticed my panel started flickering which I tried to remedy by
restarting kwin (I ran kwin_x11 --replace)
and then the already running instance crashed on teardown.
It does not happen if I just kwin_x11 --replace directly, turning compositing
off and back on is important, just turning it off also doesn't suffice to make
it crash.
Console output from the crashed KWin instance:
org.kde.kactivities.lib.core: Killing the consumer
kwin_core: Extensions: shape: 0x "11" composite: 0x "4" render: 0x "b"
fixes: 0x "50" randr: 0x "14" sync: 0x "31" damage: 0x "11"
QThread: Destroyed while thread is still running
Application::crashHandler() called with signal 6; recent crashes: 1
QCoreApplication::applicationFilePath: Please instantiate the QApplication
object first
sh: 1: --crashes: not found
KCrash: crashing... crashRecursionCounter = 2
The crash can be reproduced every time.
-- Backtrace:
Application: KWin (kwin_x11), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd19bd4f940 (LWP 18975))]
Thread 5 (Thread 0x7fd19102f700 (LWP 18988)):
#0 0x00007fd1b2344c21 in __GI_ppoll (fds=0x7fd184000b08, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:50
#1 0x00007fd1affb9dc1 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007fd1affbb422 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007fd1aff6830a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd1afd97af4 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd1afd9c509 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fd1abca86ba in start_thread (arg=0x7fd19102f700) at
pthread_create.c:333
#7 0x00007fd1b235082d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 4 (Thread 0x7fd17eb0d700 (LWP 18987)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd1af09d784 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2 0x00007fd1af09d7c9 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3 0x00007fd1abca86ba in start_thread (arg=0x7fd17eb0d700) at
pthread_create.c:333
#4 0x00007fd1b235082d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 3 (Thread 0x7fd198fd1700 (LWP 18977)):
#0 0x00007fd1b2344c21 in __GI_ppoll (fds=0x7fd18c00ebb8, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:50
#1 0x00007fd1affb9dc1 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007fd1affbb422 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007fd1aff6830a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd1afd97af4 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd1b2967b75 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6 0x00007fd1afd9c509 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007fd1abca86ba in start_thread (arg=0x7fd198fd1700) at
pthread_create.c:333
#8 0x00007fd1b235082d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 2 (Thread 0x7fd19ab4a700 (LWP 18976)):
#0 0x00007fd1b2344b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007fd1b12c1c62 in poll (__timeout=-1, __nfds=1, __fds=0x7fd19ab49b80)
at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2 _xcb_conn_wait (c=c@entry=0xcc80e0, cond=cond@entry=0xcc8120,
vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3 0x00007fd1b12c38d7 in xcb_wait_for_event (c=0xcc80e0) at
../../src/xcb_in.c:693
#4 0x00007fd19b7f81f9 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#5 0x00007fd1afd9c509 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fd1abca86ba in start_thread (arg=0x7fd19ab4a700) at
pthread_create.c:333
#7 0x00007fd1b235082d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 1 (Thread 0x7fd19bd4f940 (LWP 18975)):
[KCrash Handler]
#6 0x00007fd1b227f428 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:54
#7 0x00007fd1b228102a in __GI_abort () at abort.c:89
#8 0x00007fd1afd855b1 in QMessageLogger::fatal(char const*, ...) const () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9 0x00007fd1afd96f04 in QThread::~QThread() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fd1afd97009 in QThread::~QThread() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fd1aff93bb3 in QObjectPrivate::deleteChildren() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fd1aff9dad4 in QObject::~QObject() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fd1b1e85ef8 in KWin::Platform::~Platform() () from
/usr/lib/x86_64-linux-gnu/libkwin.so.5
#14 0x00007fd19857261a in KWin::X11StandalonePlatform::~X11StandalonePlatform()
() from
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#15 0x00007fd19857264a in KWin::X11StandalonePlatform::~X11StandalonePlatform()
() from
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#16 0x00007fd1aff93bb3 in QObjectPrivate::deleteChildren() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fd1aff9dad4 in QObject::~QObject() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fd1aff6beb2 in QCoreApplication::~QCoreApplication() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fd1b08d6be4 in QApplication::~QApplication() () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007fd1b1d47eb8 in KWin::Application::~Application() () from
/usr/lib/x86_64-linux-gnu/libkwin.so.5
#21 0x00007fd1b261a71d in KWin::ApplicationX11::~ApplicationX11() () from
/usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#22 0x00007fd1b261c0bd in kdemain () from
/usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#23 0x0000000000400848 in main ()
Possible duplicates by query: bug 379070, bug 378738, bug 378240, bug 377996,
bug 377986.
Reported using DrKonqi
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