Bug 477477

Created attachment 163435 [details]
Logs

See attachment for my attempt to gather the logs

BTW: does not happen all the time.

Can you attach a real backtrace? The one in your attachment is garbled. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl

Thanks!

FWIW I haven't been able to reproduce this.

I'm new to this so sorry for not providing the log in the right format.

Did as you suggested. Is this better?

#0  0x00007f350796257f in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#1  0x00007f3507fe9ad0 in QPlatformWindow::deliverUpdateRequest() () at /usr/lib/libQt6Gui.so.6
#2  0x00007f35079a5077 in QObject::event(QEvent*) () at /usr/lib/libQt6Core.so.6
#3  0x00007f350897318b in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt6Widgets.so.6
#4  0x00007f35079626d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#5  0x00007f3507962a5b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt6Core.so.6
#6  0x00007f3507b99d24 in  () at /usr/lib/libQt6Core.so.6
#7  0x00007f3506583f69 in  () at /usr/lib/libglib-2.0.so.0
#8  0x00007f35065e2327 in  () at /usr/lib/libglib-2.0.so.0
#9  0x00007f3506582162 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#10 0x00007f3507b97934 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#11 0x00007f350796cc5e in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#12 0x00007f3507965178 in QCoreApplication::exec() () at /usr/lib/libQt6Core.so.6
#13 0x00005630803fe22c in  ()
#14 0x00007f3507245cd0 in  () at /usr/lib/libc.so.6
#15 0x00007f3507245d8a in __libc_start_main () at /usr/lib/libc.so.6
#16 0x00005630803fe9e5 in  ()

Thanks for all the hard work :-).

Have again changed the panel (from left to right + change height, and when there was no chrash, I moved it back from right to left again, adjusting height). Then plasma chrashed again - here's the back trace of that event:

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/usr/bin/plasmashell --no-respawn'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f66bbd6257f in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt6Core.so.6
[Current thread is 1 (Thread 0x7f66b6ccd9c0 (LWP 932))]
(gdb) bt
#0  0x00007f66bbd6257f in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#1  0x00007f66bc3e9ad0 in QPlatformWindow::deliverUpdateRequest() () at /usr/lib/libQt6Gui.so.6
#2  0x00007f66bbda5077 in QObject::event(QEvent*) () at /usr/lib/libQt6Core.so.6
#3  0x00007f66bcd7318b in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt6Widgets.so.6
#4  0x00007f66bbd626d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#5  0x00007f66bbd62a5b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt6Core.so.6
#6  0x00007f66bbf99d24 in  () at /usr/lib/libQt6Core.so.6
#7  0x00007f66ba960f69 in  () at /usr/lib/libglib-2.0.so.0
#8  0x00007f66ba9bf327 in  () at /usr/lib/libglib-2.0.so.0
#9  0x00007f66ba95f162 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#10 0x00007f66bbf97934 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#11 0x00007f66bbd6cc5e in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#12 0x00007f66bbd65178 in QCoreApplication::exec() () at /usr/lib/libQt6Core.so.6
#13 0x000055d7a886e22c in  ()
#14 0x00007f66bb645cd0 in  () at /usr/lib/libc.so.6
#15 0x00007f66bb645d8a in __libc_start_main () at /usr/lib/libc.so.6
#16 0x000055d7a886e9e5 in  ()

Just trying to be helpful and provide some more info:

Tested changing the panel into a floating panel (from non-floating).
Scenario: 
- open panel edit mode
- in "style" switch to floating
- then I changed width
- then clicked outside of panel/edit menu:

Core was generated by `/usr/bin/plasmashell --no-respawn'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007fc31f76257f in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt6Core.so.6
[Current thread is 1 (Thread 0x7fc31a78b9c0 (LWP 953))]
(gdb) bt
#0  0x00007fc31f76257f in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#1  0x00007fc31fde9ad0 in QPlatformWindow::deliverUpdateRequest() () at /usr/lib/libQt6Gui.so.6
#2  0x00007fc31f7a5077 in QObject::event(QEvent*) () at /usr/lib/libQt6Core.so.6
#3  0x00007fc32077318b in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt6Widgets.so.6
#4  0x00007fc31f7626d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#5  0x00007fc31f762a5b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt6Core.so.6
#6  0x00007fc31f999d24 in  () at /usr/lib/libQt6Core.so.6
#7  0x00007fc31e41cf69 in  () at /usr/lib/libglib-2.0.so.0
#8  0x00007fc31e47b327 in  () at /usr/lib/libglib-2.0.so.0
#9  0x00007fc31e41b162 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#10 0x00007fc31f997934 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#11 0x00007fc31f76cc5e in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#12 0x00007fc31f765178 in QCoreApplication::exec() () at /usr/lib/libQt6Core.so.6
#13 0x000056451bc0722c in  ()
#14 0x00007fc31f045cd0 in  () at /usr/lib/libc.so.6
#15 0x00007fc31f045d8a in __libc_start_main () at /usr/lib/libc.so.6
#16 0x000056451bc079e5 in  ()
(gdb) 

I also tested:
- enter edit mode
- click outside edit menu
- press esc:

0  0x00007fbc91360c75 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQt6Core.so.6
[Current thread is 1 (Thread 0x7fbc8c2659c0 (LWP 6179))]
(gdb) bt
#0  0x00007fbc91360c75 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#1  0x00007fbc9237317b in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt6Widgets.so.6
#2  0x00007fbc913626d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#3  0x00007fbc919e9ad0 in QPlatformWindow::deliverUpdateRequest() () at /usr/lib/libQt6Gui.so.6
#4  0x00007fbc913a5077 in QObject::event(QEvent*) () at /usr/lib/libQt6Core.so.6
#5  0x00007fbc9237318b in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt6Widgets.so.6
#6  0x00007fbc913626d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#7  0x00007fbc91362a5b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt6Core.so.6
#8  0x00007fbc91599d24 in  () at /usr/lib/libQt6Core.so.6
#9  0x00007fbc8fef8f69 in  () at /usr/lib/libglib-2.0.so.0
#10 0x00007fbc8ff57327 in  () at /usr/lib/libglib-2.0.so.0
#11 0x00007fbc8fef7162 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#12 0x00007fbc91597934 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#13 0x00007fbc9136cc5e in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#14 0x00007fbc91365178 in QCoreApplication::exec() () at /usr/lib/libQt6Core.so.6
#15 0x00005622c165022c in  ()
#16 0x00007fbc90c45cd0 in  () at /usr/lib/libc.so.6
#17 0x00007fbc90c45d8a in __libc_start_main () at /usr/lib/libc.so.6
#18 0x00005622c16509e5 in  ()

Thanks. Is this 100% reproducible for you? I ask because I can't reproduce it and I suspect it's already been fixed as a part of some of the other Panel-related work that went in recently.

Not quite 100%. But, in my setup, I would say 90% of the time.

Over at EndeavorOS more people are testing Plasma 6 as well and have experienced this crash as well. I've asked them to report their backtraces too. I hope they will do so once Plasma 6 has reached beta status.

FYI: I'm running an updated EndeavorOS with kde-unstable, core-testing and extra-testing.

Does EndeavourOS track the latest git master for Plasma 6? Or is it still shipping the alpha release?

I'm unsure how to answer your question (I'm no dev) but I have asked over at EndeavourOS how to answer you.

What I *do* know is that EndeavourOS is based on Arch Linux, that we use the arch kde-unstable, core-testing and extra-testing repo's[1] tp help test Plasma 6.

As soon as I get an answer from anyone more knowledgeable than me, I'll let you know.

[1] https://wiki.archlinux.org/title/official_repositories#Testing_repositories

Got his answer for you: "yes it [EndeavourOS] tracks releases and not git dev snapshots.

Hope this is the answer that clarifies the situation,.

Some more information for you:

You can answer that EndeavourOS uses the Arch repositories, so it does the same as Arch.
It is the alpha release, not the git version:
source=(https://download.kde.org/unstable/plasma/$_dirver/$pkgname-$pkgver.tar.xz{,.sig})

source=(https://download.kde.org/unstable/frameworks/$pkgver/$pkgname-$pkgver.tar.xz{,.sig})

From this thread: https://forum.endeavouros.com/t/testing-plasma-6-beta-on-endeavour-os-is-this-approach-any-good/47539/181?u=semlraug

Ok, in that case you're using the Alpha release which is a month old. It's very likely the bug has already been fixed in the Beta 1 release, so I'd recommend upgrading to that once EndeavourOS provides it, and test again.

I am now on the Beta release and have not been able to reproduce this crash. I'll mark this report as solved. Thanks!