SUMMARY It is hard to reproduce. What I've done right before crash STEPS TO REPRODUCE 1. Was created and deleted about 5 sticky notes widgets on the desktop. Their notifications about to restore them were present on the screen. 2. I create new folder with customized name 3. select 3 files via rectangular selection with mouse 4. Pressed Ctrl+X. Got crash immediately. Desktop panels and desktop icons was auto-restored during a few seconds. After the crash got about 5 sticky notes present on the desktop. Re-delete them, select that 3 files again, cut and paste into the folder with success. OBSERVED RESULT `journalctl`: ``` Nov 11 05:07:54.004486 systemd-coredump[79841]: Process 854 (plasmashell) of user 1000 dumped core. Stack trace of thread 854: #0 0x00007fada1080615 raise (libc.so.6 + 0x3d615) #1 0x00007fada10806a0 __restore_rt (libc.so.6 + 0x3d6a0) #2 0x00005585f94fb870 n/a (n/a + 0x0) ``` EXPECTED RESULT SOFTWARE/OS VERSIONS Operating System: Manjaro Linux KDE Plasma Version: 5.20.2 KDE Frameworks Version: 5.75.0 Qt Version: 5.15.1 Kernel Version: 5.10.0-1-MANJARO OS Type: 64-bit ADDITIONAL INFORMATION crash dump file attached
Core dump file size is 36 MB and was rejected to upload here. Was uploaded to http://www.mediafire.com/file/6exgsg53mz7sr8z/core.plasmashell.1000.892b6f66b893474bb05bce0a5071c114.854.1605071270000000.zst/file
It happens again: I fulfilled bug ticket, closed or minimized window one after one, selected 1 folder on the desktop, pressed Ctrl+X and immediately got a new crash look the same as previous: `journalctl`: ``` Nov 11 05:28:58.216335 systemd-coredump[85036]: Process 79838 (plasmashell) of user 1000 dumped core. Stack trace of thread 79838: #0 0x00007f77e694d615 raise (libc.so.6 + 0x3d615) #1 0x00007f77e694d6a0 __restore_rt (libc.so.6 + 0x3d6a0) #2 0x000055dd393cae98 n/a (n/a + 0x0) ``` Now core dump has about 28 MB size and was uploaded to http://www.mediafire.com/file/8acnd769ikrjmy2/core.plasmashell.1000.892b6f66b893474bb05bce0a5071c114.79838.1605072534000000.zst/file
You don't need to provide the full core, just a backtrace of the crash using gdb. Can you do that?
What is the guide how to do this?
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports If you have a core file, you can run `gdb /usr/bin/plasmashell /path/to/core/file` and type `bt` and it will display a more readable backtrace.
backtrace from 36 MB-file: backtrace was manually edited: neighboring lines of `warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing` was replaced into that single line ``` Reading symbols from /usr/bin/plasmashell... (No debugging symbols found in /usr/bin/plasmashell) warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /memfd:unknown-usage:QtQml (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /memfd:JITCode:QtQml (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /memfd:xshmfence (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /memfd:JSGCHeap:QtQml (deleted) during file-backed mapping note processing warning: Can't open file /memfd:xorg (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /memfd:pulseaudio (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /home/m/.cache/ksycoca5_en-GB_7WWdbVM3fwVucaLMGhx761eTffo= (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /usr/lib/libksgrd.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libKF5Screen.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libnotificationmanager.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libprocesscore.so.5.20.2 during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /usr/lib/libLLVM-10.so during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /usr/lib/libKSysGuardFormatter.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libKSysGuardSensors.so.5.20.2 during file-backed mapping note processing warning: Can't open file /memfd:JSVMStack:QtQml (deleted) during file-backed mapping note processing warning: Can't open file /usr/lib/libKSysGuardSensorFaces.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libtaskmanager.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libbreezecommon5.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libkworkspace5.so.5.20.2 during file-backed mapping note processing [New LWP 854] [New LWP 2336] [New LWP 910] [New LWP 1122] [New LWP 1103] [New LWP 1100] [New LWP 1126] [New LWP 2331] [New LWP 2333] [New LWP 2335] [New LWP 2337] [New LWP 2338] [New LWP 3918] [New LWP 79541] [New LWP 79714] [New LWP 79720] [New LWP 79729] [New LWP 1101] [New LWP 2339] [New LWP 883] [New LWP 1102] [New LWP 1110] [New LWP 2326] [New LWP 2332] [New LWP 1109] [New LWP 3398] [New LWP 1125] [New LWP 10278] [New LWP 47136] [New LWP 79682] [New LWP 79674] warning: .dynamic section for "/usr/lib/libdrm.so.2" is not at the expected address (wrong library or version mismatch?) warning: .dynamic section for "/usr/lib/dri/iris_dri.so" is not at the expected address (wrong library or version mismatch?) warning: Could not load shared library symbols for /usr/lib/libLLVM-10.so. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". --Type <RET> for more, q to quit, c to continue without paging--c Core was generated by `/usr/bin/plasmashell'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007fada1080615 in raise () from /usr/lib/libc.so.6 [Current thread is 1 (Thread 0x7fad9d3be840 (LWP 854))] (gdb) ```
backtrace from 28 MB-file: backtrace was manually edited: neighboring lines of `warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing` was replaced into that single line ``` Reading symbols from /usr/bin/plasmashell... (No debugging symbols found in /usr/bin/plasmashell) warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /memfd:unknown-usage:QtQml (deleted) during file-backed mapping note processing warning: Can't open file /memfd:JITCode:QtQml (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /memfd:pulseaudio (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /memfd:xshmfence (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /memfd:JSGCHeap:QtQml (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /usr/lib/libksgrd.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libKF5Screen.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libnotificationmanager.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libprocesscore.so.5.20.2 during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /memfd:xorg (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /usr/lib/libLLVM-10.so during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /usr/lib/libKSysGuardFormatter.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libKSysGuardSensors.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libKSysGuardSensorFaces.so.5.20.2 during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /usr/lib/libtaskmanager.so.5.20.2 during file-backed mapping note processing warning: Can't open file /memfd:JSVMStack:QtQml (deleted) during file-backed mapping note processing warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing warning: Can't open file /usr/lib/libbreezecommon5.so.5.20.2 during file-backed mapping note processing warning: Can't open file /usr/lib/libkworkspace5.so.5.20.2 during file-backed mapping note processing [New LWP 79838] [New LWP 84974] [New LWP 79866] [New LWP 79850] [New LWP 80081] [New LWP 79844] [New LWP 79845] [New LWP 79851] [New LWP 80087] [New LWP 80088] [New LWP 80086] [New LWP 84972] [New LWP 79847] [New LWP 79843] [New LWP 79846] [New LWP 79863] [New LWP 84973] [New LWP 79848] [New LWP 79867] [New LWP 80073] [New LWP 80079] [New LWP 80080] [New LWP 80082] [New LWP 80084] [New LWP 84971] warning: .dynamic section for "/usr/lib/libdrm.so.2" is not at the expected address (wrong library or version mismatch?) warning: .dynamic section for "/usr/lib/dri/iris_dri.so" is not at the expected address (wrong library or version mismatch?) warning: Could not load shared library symbols for /usr/lib/libLLVM-10.so. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". Core was generated by `/usr/bin/plasmashell'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f77e694d615 in raise () from /usr/lib/libc.so.6 [Current thread is 1 (Thread 0x7f77e2c8b840 (LWP 79838))] (gdb) ```
Hmm that's not a backtrace. You have to type `bt` at the gdb prompt.
Sorry, Nate. For 36 MB-file: ``` (gdb) bt #0 0x00007fada1080615 in raise () at /usr/lib/libc.so.6 #1 0x00007fada10806a0 in <signal handler called> () at /usr/lib/libc.so.6 #2 0x00005585f94fb870 in () #3 0x00007fada16a7b7a in QMetaObject::cast(QObject const*) const () at /usr/lib/libQt5Core.so.5 #4 0x00007fad9c3d1b6d in QQuickShortcutContext::matcher(QObject*, Qt::ShortcutContext) () at /usr/lib/libQt5QuickTemplates2.so.5 #5 0x00007fada1aa42cf in QShortcutMap::find(QKeyEvent*, int) () at /usr/lib/libQt5Gui.so.5 #6 0x00007fada1aa72e1 in QShortcutMap::nextState(QKeyEvent*) () at /usr/lib/libQt5Gui.so.5 #7 0x00007fada1aa8617 in QShortcutMap::tryShortcut(QKeyEvent*) () at /usr/lib/libQt5Gui.so.5 #8 0x00007fada1a502b4 in QWindowSystemInterface::handleShortcutEvent(QWindow*, unsigned long, int, QFlags<Qt::KeyboardModifier>, unsigned int, unsigned int, unsigned int, QString const&, bool, unsigned short) () at /usr/lib/libQt5Gui.so.5 #9 0x00007fada1a7339c in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () at /usr/lib/libQt5Gui.so.5 #10 0x00007fada1a4cbac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5 #11 0x00007fad9cfccf9c in () at /usr/lib/libQt5XcbQpa.so.5 #12 0x00007fad9fb15914 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0 #13 0x00007fad9fb697d1 in () at /usr/lib/libglib-2.0.so.0 #14 0x00007fad9fb14121 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0 #15 0x00007fada16f7941 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #16 0x00007fada169d65c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #17 0x00007fada16a5af4 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5 #18 0x00005585f6ca5f99 in () #19 0x00007fada106b152 in __libc_start_main () at /usr/lib/libc.so.6 #20 0x00005585f6ca61de in () (gdb) ```
for 28 MB-file: ``` (gdb) bt #0 0x00007f77e694d615 in raise () at /usr/lib/libc.so.6 #1 0x00007f77e694d6a0 in <signal handler called> () at /usr/lib/libc.so.6 #2 0x000055dd393cae98 in () #3 0x00007f77e6f74b7a in QMetaObject::cast(QObject const*) const () at /usr/lib/libQt5Core.so.5 #4 0x00007f77e1c9eb6d in QQuickShortcutContext::matcher(QObject*, Qt::ShortcutContext) () at /usr/lib/libQt5QuickTemplates2.so.5 #5 0x00007f77e73712cf in QShortcutMap::find(QKeyEvent*, int) () at /usr/lib/libQt5Gui.so.5 #6 0x00007f77e73742e1 in QShortcutMap::nextState(QKeyEvent*) () at /usr/lib/libQt5Gui.so.5 #7 0x00007f77e7375617 in QShortcutMap::tryShortcut(QKeyEvent*) () at /usr/lib/libQt5Gui.so.5 #8 0x00007f77e731d2b4 in QWindowSystemInterface::handleShortcutEvent(QWindow*, unsigned long, int, QFlags<Qt::KeyboardModifier>, unsigned int, unsigned int, unsigned int, QString const&, bool, unsigned short) () at /usr/lib/libQt5Gui.so.5 #9 0x00007f77e734039c in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () at /usr/lib/libQt5Gui.so.5 #10 0x00007f77e7319bac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5 #11 0x00007f77e2899f9c in () at /usr/lib/libQt5XcbQpa.so.5 #12 0x00007f77e53e2914 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0 #13 0x00007f77e54367d1 in () at /usr/lib/libglib-2.0.so.0 #14 0x00007f77e53e1121 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0 #15 0x00007f77e6fc4941 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #16 0x00007f77e6f6a65c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5 #17 0x00007f77e6f72af4 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5 #18 0x000055dd34634f99 in () #19 0x00007f77e6938152 in __libc_start_main () at /usr/lib/libc.so.6 #20 0x000055dd346351de in () (gdb) ```
Thanks.
*** This bug has been marked as a duplicate of bug 418136 ***