Bug 419648

Today I tried to update a global theme with Discover, it did not crash but got stuck at 0% and never finished the update process.

Operating System: Arch Linux 
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.70.0
Qt Version: 5.14.2

Could you provide a backtrace, if possible with debug symbols?

Please provide a backtrace.

this still happening on my arch system ( I no longer have manjaro) 
Operating System: Arch Linux
KDE Plasma Version: 5.19.3
KDE Frameworks Version: 5.72.0
Qt Version: 5.15.0
Kernel Version: 5.7.9-20-tkg-pds
OS Type: 64-bit
Processors: 16 × AMD Ryzen 7 2700X Eight-Core Processor
Memory: 15.6 GiB of RAM
Graphics Processor: GeForce GTX 1080/PCIe/SSE2

It's not crashing anymore though how do I provide a backtrace?

I got a crash on the latest git with snap support
```
Application: Discover (plasma-discover), signal: Aborted

[KCrash Handler]
#4  0x00007f093b878355 in raise () at /usr/lib/libc.so.6
#5  0x00007f093b861853 in abort () at /usr/lib/libc.so.6
#6  0x00007f093b8bb878 in __libc_message () at /usr/lib/libc.so.6
#7  0x00007f093b8c2d3a in  () at /usr/lib/libc.so.6
#8  0x00007f093b8c3ef4 in _int_free () at /usr/lib/libc.so.6
#9  0x00007f092c4210dd in  () at /usr/lib/libKF5NewStuffCore.so.5
#10 0x00007f093bec21d2 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#11 0x00007f093ce56702 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#12 0x00007f093be957ba in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#13 0x00007f093be982a3 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#14 0x00007f093beeecf4 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007f093a35043c in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#16 0x00007f093a39e1d9 in  () at /usr/lib/libglib-2.0.so.0
#17 0x00007f093a34f221 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#18 0x00007f093beee331 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#19 0x00007f093be9413c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#20 0x00007f093be9c5c4 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#21 0x000055eec126aec8 in  ()
#22 0x00007f093b863002 in __libc_start_main () at /usr/lib/libc.so.6
#23 0x000055eec126b45e in _start ()
[Inferior 1 (process 10673) detached]
```

I figured out how to reproduce the crash on my system if I have more than 15 updates selected at once it will crash. so i can update the whole list of pacakages by selecting 15 at a time, however they don't seem to be achtually installing and the updates will just come back when i check for updates

This is super weird. I can't reproduce  and the backtrace doesn't really bring any information. Maybe you could bring the rest of the threads?

Created attachment 130980 [details]
gdb output

here is a new log I got with GDB (was using drkonki before) I'm not too familiar with how to debug kde applications so, I apologize in advance if I make a mistake

(In reply to andresdortiz from comment #8)
> Created attachment 130980 [details]
> gdb output
> 
> here is a new log I got with GDB (was using drkonki before) I'm not too
> familiar with how to debug kde applications so, I apologize in advance if I
> make a mistake

something I forgot to mention is I can no longer seem to get it to crash but it does hang when I do an update. also might be unrelated but I am unable to search for new applications/plasma addons in discover

Created attachment 130985 [details]
gdb log with crash

I was able to get it to crash by searching and browsing for new themes and stuff while updates where running in discover

Created attachment 130986 [details]
gdb log with crash

was able to produce a crash by searching/borowsing for new addons while updates are runing

Should be fixed by a combination of the fixes from Bug 427201 and Bug 426732!

(In reply to Nate Graham from comment #12)
> Should be fixed by a combination of the fixes from Bug 427201 and Bug 426732!

The bug is still there: Discover notified me of the presence of updates for add-ons, I tried to install them but it crashed. It is reproducible every time. Please see attached backtrace.
OS version: KDE neon Focal
Plasma version: 5.20.0
KDE Frameworks version: 5.75.0
Qt version: 5.15

Created attachment 132343 [details]
Discover 5.20 backtrace

still get a crash 

Qt Version: 5.15.1
Frameworks Version: 5.75.0
Operating System: Linux 5.9.3-95-tkg-pds x86_64
Windowing system: X11
Distribution: "Arch Linux"

-- Information about the crash:
<In detail, tell us what you were doing  when the application crashed.>

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault

[KCrash Handler]
#4  0x0000000057a56cd4 in  ()
#5  0x00007f9b00334e41 in  () at /usr/lib/libKF5NewStuffCore.so.5
#6  0x00007f9b1cb5b36e in QObjectPrivate::deleteChildren() () at /usr/lib/libQt5Core.so.5
#7  0x00007f9b1cb661d5 in QObject::~QObject() () at /usr/lib/libQt5Core.so.5
#8  0x00007f9b00334344 in  () at /usr/lib/libKF5NewStuffCore.so.5
#9  0x00007f9b1cb5d5a0 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#10 0x00007f9b1daec752 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#11 0x00007f9b1cb30cda in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#12 0x00007f9b1cb337d3 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#13 0x00007f9b1cb8a304 in  () at /usr/lib/libQt5Core.so.5
#14 0x00007f9b1afd3914 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#15 0x00007f9b1b0277d1 in  () at /usr/lib/libglib-2.0.so.0
#16 0x00007f9b1afd2121 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#17 0x00007f9b1cb89941 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#18 0x00007f9b1cb2f65c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#19 0x00007f9b1cb37af4 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#20 0x000056511255883f in  ()
#21 0x00007f9b1c4fd152 in __libc_start_main () at /usr/lib/libc.so.6
#22 0x0000565112558dce in _start ()
[Inferior 1 (process 95059) detached]

Report to https://bugs.kde.org/

It is currently fixed for me.

Let's close as fixed, there's been a lot of fixes since that date and the reporters cannot reproduce anymore.
Please reopen if you get it to crash on a supported release.