Bug 417782

Summary: Plasma crashes in QXcbBasicConnection::internAtom() when dragging and dropping onto the Task Manager
Product: [Plasma] plasmashell Reporter: Pavel Florian <florian43>
Component: Task Manager and Icons-Only Task ManagerAssignee: Eike Hein <hein>
Status: RESOLVED WORKSFORME    
Severity: crash CC: lemmyg, nate, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.18.0   
Target Milestone: 1.0   
Platform: openSUSE   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=417536
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Pavel Florian 2020-02-17 10:07:53 UTC 
Application: plasmashell (5.18.0)

Qt Version: 5.14.1
Frameworks Version: 5.67.0
Operating System: Linux 5.5.2-1-default x86_64
Windowing system: X11
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:

I worked with Firefox browser and Jupyter python plugin and Dolphin.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f55a3049800 (LWP 3934))]

Thread 9 (Thread 0x7f55717c6700 (LWP 7393)):
#0  0x00007f55a774e4ec in read () from /lib64/libc.so.6
#1  0x00007f55a3b121df in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f55a3acae47 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f55a3acb292 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f55a3acb40f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f55a53a9c6b in QEventDispatcherGlib::processEvents (this=0x7f556c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f55a5351bfb in QEventLoop::exec (this=this@entry=0x7f55717c5d60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#7  0x00007f55a517c62e in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#8  0x00007f5571ff5e48 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#9  0x00007f55a517d6f8 in QThreadPrivate::start (arg=0x55ce6d424c00) at thread/qthread_unix.cpp:342
#10 0x00007f55a47aff2a in start_thread () from /lib64/libpthread.so.0
#11 0x00007f55a775d38f in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f5590bb8700 (LWP 5387)):
#0  0x00007f55a7752abf in poll () from /lib64/libc.so.6
#1  0x00007f55a3acb2ee in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f55a3acb40f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f55a53a9c6b in QEventDispatcherGlib::processEvents (this=0x7f557c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f55a5351bfb in QEventLoop::exec (this=this@entry=0x7f5590bb7d60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#5  0x00007f55a517c62e in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#6  0x00007f55a6dca0e6 in ?? () from /usr/lib64/libQt5Quick.so.5
#7  0x00007f55a517d6f8 in QThreadPrivate::start (arg=0x7f558c086ad0) at thread/qthread_unix.cpp:342
#8  0x00007f55a47aff2a in start_thread () from /lib64/libpthread.so.0
#9  0x00007f55a775d38f in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f55927fc700 (LWP 4477)):
#0  0x00007f55a47b66a5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f55988c075b in ?? () from /usr/lib64/dri/i965_dri.so
#2  0x00007f55988c05d7 in ?? () from /usr/lib64/dri/i965_dri.so
#3  0x00007f55a47aff2a in start_thread () from /lib64/libpthread.so.0
#4  0x00007f55a775d38f in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f5592ffd700 (LWP 4476)):
#0  0x00007f55a47b66a5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f55988c075b in ?? () from /usr/lib64/dri/i965_dri.so
#2  0x00007f55988c05d7 in ?? () from /usr/lib64/dri/i965_dri.so
#3  0x00007f55a47aff2a in start_thread () from /lib64/libpthread.so.0
#4  0x00007f55a775d38f in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f55937fe700 (LWP 4475)):
#0  0x00007f55a47b66a5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f55988c075b in ?? () from /usr/lib64/dri/i965_dri.so
#2  0x00007f55988c05d7 in ?? () from /usr/lib64/dri/i965_dri.so
#3  0x00007f55a47aff2a in start_thread () from /lib64/libpthread.so.0
#4  0x00007f55a775d38f in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f5593fff700 (LWP 4474)):
#0  0x00007f55a47b66a5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f55988c075b in ?? () from /usr/lib64/dri/i965_dri.so
#2  0x00007f55988c05d7 in ?? () from /usr/lib64/dri/i965_dri.so
#3  0x00007f55a47aff2a in start_thread () from /lib64/libpthread.so.0
#4  0x00007f55a775d38f in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f559adee700 (LWP 4345)):
#0  0x00007f55a774e4ec in read () from /lib64/libc.so.6
#1  0x00007f55a3b121df in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f55a3acae47 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f55a3acb292 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f55a3acb40f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f55a53a9c6b in QEventDispatcherGlib::processEvents (this=0x7f558c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f55a5351bfb in QEventLoop::exec (this=this@entry=0x7f559adedd80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#7  0x00007f55a517c62e in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#8  0x00007f55a6b126e5 in ?? () from /usr/lib64/libQt5Qml.so.5
#9  0x00007f55a517d6f8 in QThreadPrivate::start (arg=0x55ce6ae4e490) at thread/qthread_unix.cpp:342
#10 0x00007f55a47aff2a in start_thread () from /lib64/libpthread.so.0
#11 0x00007f55a775d38f in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f559bfff700 (LWP 4008)):
#0  0x00007fffb5ac16df in ?? ()
#1  0x00007fffb5ac18a8 in clock_gettime ()
#2  0x00007f55a776a537 in clock_gettime () from /lib64/libc.so.6
#3  0x00007f55a53a9571 in qt_clock_gettime (ts=0x7f559bffead0, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#4  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#5  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#6  0x00007f55a53a7e89 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f5594004d50) at kernel/qtimerinfo_unix.cpp:91
#7  0x00007f55a53a8455 in QTimerInfoList::timerWait (this=0x7f5594004d50, tm=...) at kernel/qtimerinfo_unix.cpp:388
#8  0x00007f55a53a99ce in timerSourcePrepareHelper (timeout=0x7f559bffeba4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#9  timerSourcePrepare (source=<optimized out>, timeout=0x7f559bffeba4) at kernel/qeventdispatcher_glib.cpp:166
#10 0x00007f55a3aca87a in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#11 0x00007f55a3acb21b in ?? () from /usr/lib64/libglib-2.0.so.0
#12 0x00007f55a3acb40f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#13 0x00007f55a53a9c6b in QEventDispatcherGlib::processEvents (this=0x7f5594000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#14 0x00007f55a5351bfb in QEventLoop::exec (this=this@entry=0x7f559bffed70, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#15 0x00007f55a517c62e in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#16 0x00007f55a648e507 in ?? () from /usr/lib64/libQt5DBus.so.5
#17 0x00007f55a517d6f8 in QThreadPrivate::start (arg=0x7f55a6510da0) at thread/qthread_unix.cpp:342
#18 0x00007f55a47aff2a in start_thread () from /lib64/libpthread.so.0
#19 0x00007f55a775d38f in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f55a3049800 (LWP 3934)):
[KCrash Handler]
#5  0x00007f55a11ae119 in QXcbBasicConnection::internAtom (this=this@entry=0x55ce6ac8c130, name=0x55ce6d1c99d8 "text/x-orgkdeplasmataskmanager_taskurl") at qxcbconnection_basic.cpp:195
#6  0x00007f55a118c43c in QXcbMime::mimeAtomsForFormat (connection=0x55ce6ac8c130, format=...) at ../../../../include/QtCore/../../src/corelib/tools/qarraydata.h:208
#7  0x00007f55a11b7784 in QXcbDrag::startDrag (this=0x55ce6ac66ae0) at ./qxcbobject.h:53
#8  0x00007f55a57a53de in QBasicDrag::drag (this=0x55ce6ac66ae0, o=<optimized out>) at kernel/qsimpledrag.cpp:204
#9  0x00007f55a57a2b06 in QDragManager::drag (this=0x55ce6e7722d0, o=0x55ce6ef16090) at /usr/include/c++/9/bits/atomic_base.h:413
#10 0x00007f55a57a2e23 in QDrag::exec (this=<optimized out>, supportedActions=..., defaultDropAction=<optimized out>) at /usr/include/c++/9/bits/atomic_base.h:413
#11 0x00007f55779144f6 in ?? () from /usr/lib64/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#12 0x00007f55a537fa79 in QObject::event (this=0x55ce6cf34490, e=0x55ce6e80c830) at kernel/qobject.cpp:1339
#13 0x00007f55a5eb5caf in QApplicationPrivate::notify_helper (this=this@entry=0x55ce6ac7a660, receiver=receiver@entry=0x55ce6cf34490, e=e@entry=0x55ce6e80c830) at kernel/qapplication.cpp:3684
#14 0x00007f55a5ebedf0 in QApplication::notify (this=0x7fffb5a5d800, receiver=0x55ce6cf34490, e=0x55ce6e80c830) at kernel/qapplication.cpp:3430
#15 0x00007f55a5353062 in QCoreApplication::notifyInternal2 (receiver=0x55ce6cf34490, event=0x55ce6e80c830) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:153
#16 0x00007f55a53557f4 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x55ce6ac70180) at kernel/qcoreapplication.cpp:1832
#17 0x00007f55a53aa5d3 in postEventSourceDispatch (s=0x55ce6ad3fdc0) at kernel/qeventdispatcher_glib.cpp:277
#18 0x00007f55a3acaff8 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#19 0x00007f55a3acb380 in ?? () from /usr/lib64/libglib-2.0.so.0
#20 0x00007f55a3acb40f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#21 0x00007f55a53a9c4e in QEventDispatcherGlib::processEvents (this=0x55ce6ad40a90, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#22 0x00007f55a5351bfb in QEventLoop::exec (this=this@entry=0x7fffb5a5d640, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#23 0x00007f55a53599d2 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#24 0x000055ce6a440c0d in ?? ()
#25 0x00007f55a7684e0b in __libc_start_main () from /lib64/libc.so.6
#26 0x000055ce6a44170a in _start ()
[Inferior 1 (process 3934) detached]

Possible duplicates by query: bug 417536.

Reported using DrKonqi
Comment 1 galder 2022-01-30 15:34:37 UTC 
Looks like an old issue. Setting it to needs more info.
Please if this is not an issue any more let us know.
Bugs placed into NEEDSINFO status will receive a reminder if the ticket:

    Is at least 15 days old
    Has not received any comment within 15 days

If a bug remains in NEEDSINFO for another 15 days with no comment, it will be closed as RESOLVED > WORKSFORME.
Comment 2 Bug Janitor Service 2022-02-14 04:36:37 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
mark the bug 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 3 Bug Janitor Service 2022-03-01 04:36:49 UTC 
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!