Bug 392721 - kwin crashes under poor memory conditions
Summary: kwin crashes under poor memory conditions
Status: RESOLVED WORKSFORME
Alias: None
Product: kwin
Classification: Plasma
Component: general (show other bugs)
Version: 5.11.95
Platform: Ubuntu Linux
: NOR crash
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: drkonqi, triaged
Depends on:
Blocks:
 
Reported: 2018-04-04 13:46 UTC by Mina Galić
Modified: 2018-10-29 01:59 UTC (History)
0 users

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Sentry Crash Report:

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Description Mina Galić 2018-04-04 13:46:15 UTC 
Application: kwin_x11 (5.11.95)

Qt Version: 5.9.1
Frameworks Version: 5.42.0
Operating System: Linux 4.13.0-38-generic x86_64
Distribution: Ubuntu 17.10

-- Information about the crash:
- What I was doing when the application crashed:
running too many browsers… and then i started racket, which also uses quite a lot of memory

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc6bdc25980 (LWP 3273))]

Thread 5 (Thread 0x7fc68a7fc700 (LWP 3350)):
#0  0x00007fc6b6639072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fc6b9bc0fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fc6b6639072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fc6b9bc0f68, cond=0x7fc6b9bc0f90) at pthread_cond_wait.c:502
#2  0x00007fc6b6639072 in __pthread_cond_wait (cond=0x7fc6b9bc0f90, mutex=0x7fc6b9bc0f68) at pthread_cond_wait.c:655
#3  0x00007fc6b98ccbd4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007fc6b98ccc19 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007fc6b66327fc in start_thread (arg=0x7fc68a7fc700) at pthread_create.c:465
#6  0x00007fc6bd5b0b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fc68b7fd700 (LWP 3339)):
#0  0x00007fc6bd5bf1af in __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:67
#1  0x00007fc6bd5a4a28 in __GI_ppoll (fds=0x7fc684000d18, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#2  0x00007fc6ba9ba151 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fc6ba9bb86e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc6ba963e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc6ba7833ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fc6b5138f45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fc6ba78829d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fc6b66327fc in start_thread (arg=0x7fc68b7fd700) at pthread_create.c:465
#9  0x00007fc6bd5b0b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fc69b95c700 (LWP 3280)):
#0  0x00007fc6bd5a4a4b in __GI_ppoll (fds=0x7fc69400eb78, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007fc6ba9ba151 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fc6ba9bb86e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fc6ba963e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fc6ba7833ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc6b401be45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6  0x00007fc6ba78829d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fc6b66327fc in start_thread (arg=0x7fc69b95c700) at pthread_create.c:465
#8  0x00007fc6bd5b0b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fc6a1f44700 (LWP 3279)):
#0  0x00007fc6bd5a4951 in __GI___poll (fds=0x7fc6a1f43b38, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fc6bc4bc747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fc6bc4be53a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fc6a29ecf09 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fc6ba78829d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fc6b66327fc in start_thread (arg=0x7fc6a1f44700) at pthread_create.c:465
#6  0x00007fc6bd5b0b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fc6bdc25980 (LWP 3273)):
[KCrash Handler]
#6  0x00007fc6b97e4c30 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#7  0x00007fc6b986f453 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#8  0x00007fc6b986f898 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#9  0x00007fc6b991456f in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#10 0x00007fc6b99150df in QScriptEngine::QScriptEngine(QObject*) () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#11 0x00007fc6bd14eca7 in  () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#12 0x00007fc6bd1515d2 in KWin::Scripting::loadScript(QString const&, QString const&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#13 0x00007fc6bd152c75 in KWin::Scripting::start() () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#14 0x00007fc6bd1e123d in  () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#15 0x00007fc6ba9948e5 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fc6ba995452 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fc6bb6e046c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007fc6bb6e7d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007fc6ba965de8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fc6ba96855d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fc6ba9bb684 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fc6a2a4f9ad in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#23 0x00007fc6ba963e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fc6ba96cda4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fc6bd884dbb in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#26 0x00007fc6bd4bd1c1 in __libc_start_main (main=0x55b92f3cb730, argc=3, argv=0x7ffc6316a4c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc6316a4b8) at ../csu/libc-start.c:308
#27 0x000055b92f3cb76a in _start ()

Reported using DrKonqi
Comment 1 Martin Flöser 2018-04-04 15:32:24 UTC 
Unfortunately the backtrace is lacking debug symbols. If you are able to reproduce please install debug packages and attach a new backtrace.
Comment 2 Mina Galić 2018-04-13 19:30:12 UTC 
I'm having trouble installing the debug systems — i installed kwin & co from from the kubuntu-beta ppa:

W: Skipping acquire of configured file 'main/debug/i18n/Translation-en_US' as repository 'http://ppa.launchpad.net/kubuntu-ppa/beta/ubuntu artful InRelease' doesn't have the component 'main/debug' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'main/debug/i18n/Translation-en' as repository 'http://ppa.launchpad.net/kubuntu-ppa/beta/ubuntu artful InRelease' doesn't have the component 'main/debug' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'main/debug/dep11/Components-amd64.yml' as repository 'http://ppa.launchpad.net/kubuntu-ppa/beta/ubuntu artful InRelease' doesn't have the component 'main/debug' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'main/debug/Contents-amd64' as repository 'http://ppa.launchpad.net/kubuntu-ppa/beta/ubuntu artful InRelease' doesn't have the component 'main/debug' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'main/debug/Contents-i386' as repository 'http://ppa.launchpad.net/kubuntu-ppa/beta/ubuntu artful InRelease' doesn't have the component 'main/debug' (component misspelt in sources.list?)
Comment 3 Andrew Crouthamel 2018-09-28 03:35:50 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days, the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please set the bug status as REPORTED so that the KDE team knows that the bug is ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 4 Andrew Crouthamel 2018-10-29 01:59:36 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!