Bug 368928 - crash while quitting KDevelop with a debug session still open
Summary: crash while quitting KDevelop with a debug session still open
Status: RESOLVED WORKSFORME
Alias: None
Product: kdevelop
Classification: Applications
Component: general (show other bugs)
Version: 5.0.0
Platform: unspecified Linux
: NOR crash
Target Milestone: ---
Assignee: kdevelop-bugs-null
URL:
Keywords: drkonqi
Depends on:
Blocks:
 
Reported: 2016-09-16 21:41 UTC by RJVB
Modified: 2018-12-02 03:50 UTC (History)
0 users

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Latest Commit:
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Description RJVB 2016-09-16 21:41:00 UTC 
Application: kdevelop5 (5.0.0)
 (Compiled from sources)
Qt Version: 5.6.1
Frameworks Version: 5.24.0
Operating System: Linux 4.5.7-ck1-mainline-core2-rjvb x86_64
Distribution: Ubuntu 14.04.5 LTS

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

I had been testing the debugging of a simple Qt5 application using the lldb plugin and lldb-mi-3.9 .
When that session became unresponsive due to excessive memory usage by the debugger I first hit the Stop All toolbar button, and then KDevelop's window close button before the debug session (and view) had been closed completely.

- Unusual behaviour I noticed:

My whole plasma (4) desktop had come down except for KWin.

-- Backtrace:
Application: KDevelop (kdevelop5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8cf779e780 (LWP 15415))]

Thread 5 (Thread 0x7f8cd6bbf700 (LWP 15416)):
#0  0x00007f8cf4500fdd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8ce7619b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f8ce761b64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f8cd9835ac9 in QXcbEventReader::run (this=0x1c67df0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/plugins/platforms/xcb/qxcbconnection.cpp:1325
#4  0x00007f8cf4bafd29 in QThreadPrivate::start (arg=0x1c67df0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/thread/qthread_unix.cpp:341
#5  0x00007f8cee2bb184 in start_thread (arg=0x7f8cd6bbf700) at pthread_create.c:312
#6  0x00007f8cf450e37d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f8cd56c6700 (LWP 15417)):
#0  0x00007f8ced47761a in g_mutex_get_impl (mutex=0x7f8cc8000990) at /build/buildd/glib2.0-2.40.2/./glib/gthread-posix.c:120
#1  0x00007f8ced4779a9 in g_mutex_unlock (mutex=mutex@entry=0x7f8cc8000990) at /build/buildd/glib2.0-2.40.2/./glib/gthread-posix.c:228
#2  0x00007f8ced435ef6 in g_main_context_iterate (context=context@entry=0x7f8cc8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3712
#3  0x00007f8ced4360ec in g_main_context_iteration (context=0x7f8cc8000990, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3795
#4  0x00007f8cf4dcb6fb in QEventDispatcherGlib::processEvents (this=0x7f8cc80008c0, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f8cf4d7562a in QEventLoop::exec (this=this@entry=0x7f8cd56c5e20, flags=..., flags@entry=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qeventloop.cpp:204
#6  0x00007f8cf4bab01b in QThread::exec (this=this@entry=0x7f8cf6bb2420 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/thread/qthread.cpp:500
#7  0x00007f8cf6941615 in QDBusConnectionManager::run (this=0x7f8cf6bb2420 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/dbus/qdbusconnection.cpp:189
#8  0x00007f8cf4bafd29 in QThreadPrivate::start (arg=0x7f8cf6bb2420 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/thread/qthread_unix.cpp:341
#9  0x00007f8cee2bb184 in start_thread (arg=0x7f8cd56c6700) at pthread_create.c:312
#10 0x00007f8cf450e37d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f8cc4926700 (LWP 15422)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f8cf4bb0a66 in wait_relative (time=1000, this=0x25a1310) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:126
#2  wait (time=1000, this=0x25a1310) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:134
#3  QWaitCondition::wait (this=this@entry=0x259e808, mutex=mutex@entry=0x259e810, time=time@entry=1000) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:208
#4  0x00007f8cf26736c8 in KDevelop::DUChainPrivate::CleanupThread::run (this=0x259e7f0) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kdevplatform5/kf5-kdevplatform-devel/work/kf5-kdevplatform-5/language/duchain/duchain.cpp:282
#5  0x00007f8cf4bafd29 in QThreadPrivate::start (arg=0x259e7f0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/thread/qthread_unix.cpp:341
#6  0x00007f8cee2bb184 in start_thread (arg=0x7f8cc4926700) at pthread_create.c:312
#7  0x00007f8cf450e37d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f8ca6396700 (LWP 15911)):
#0  0x00007f8cf4500fdd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8ced435fe4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f8c74332560, timeout=-1, context=0x7f8c745b6b60) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:4028
#2  g_main_context_iterate (context=context@entry=0x7f8c745b6b60, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3729
#3  0x00007f8ced4360ec in g_main_context_iteration (context=0x7f8c745b6b60, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3795
#4  0x00007f8cf4dcb6fb in QEventDispatcherGlib::processEvents (this=0x7f8c740354d0, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f8cf4d7562a in QEventLoop::exec (this=this@entry=0x7f8ca6395e50, flags=..., flags@entry=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qeventloop.cpp:204
#6  0x00007f8cf4bab01b in QThread::exec (this=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/thread/qthread.cpp:500
#7  0x00007f8cf4bafd29 in QThreadPrivate::start (arg=0x7f8ce90ad828 <KDevelop::(anonymous namespace)::Q_QGS_s_parsingThread::innerFunction()::holder+8>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/thread/qthread_unix.cpp:341
#8  0x00007f8cee2bb184 in start_thread (arg=0x7f8ca6396700) at pthread_create.c:312
#9  0x00007f8cf450e37d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f8cf779e780 (LWP 15415)):
[KCrash Handler]
#6  0x0000000000002700 in ?? ()
#7  0x00007f8cbf92fde4 in ~DebugSession (this=0x82315a0, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kdevelop5/kf5-kdevelop-devel/work/kf5-kdevelop-5/debuggers/lldb/debugsession.cpp:120
#8  KDevMI::LLDB::DebugSession::~DebugSession (this=0x82315a0, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kdevelop5/kf5-kdevelop-devel/work/kf5-kdevelop-5/debuggers/lldb/debugsession.cpp:121
#9  0x00007f8cf4da50c8 in QObject::event (this=0x82315a0, e=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qobject.cpp:1247
#10 0x00007f8cf5b31a1c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x82315a0, e=0x2440050) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/widgets/kernel/qapplication.cpp:3804
#11 0x00007f8cf5b36aef in QApplication::notify (this=0x7fff35a49440, receiver=0x82315a0, e=0x2440050) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/widgets/kernel/qapplication.cpp:3561
#12 0x00007f8cf4d77768 in QCoreApplication::notifyInternal2 (receiver=0x82315a0, event=event@entry=0x2440050) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qcoreapplication.cpp:1020
#13 0x00007f8cf4d795ec in sendEvent (event=0x2440050, receiver=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qcoreapplication.h:225
#14 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1c42e70) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qcoreapplication.cpp:1655
#15 0x00007f8cf4d79aa8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qcoreapplication.cpp:1513
#16 0x00007f8cf4dcb2d3 in postEventSourceDispatch (s=0x1c84190) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:270
#17 0x00007f8ced435e04 in g_main_dispatch (context=0x7f8cd0003000) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3064
#18 g_main_context_dispatch (context=context@entry=0x7f8cd0003000) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3663
#19 0x00007f8ced436048 in g_main_context_iterate (context=context@entry=0x7f8cd0003000, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3734
#20 0x00007f8ced4360ec in g_main_context_iteration (context=0x7f8cd0003000, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3795
#21 0x00007f8cf4dcb6df in QEventDispatcherGlib::processEvents (this=0x1c8e9d0, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:417
#22 0x00007f8cf4d7562a in QEventLoop::exec (this=this@entry=0x7fff35a49210, flags=..., flags@entry=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qeventloop.cpp:204
#23 0x00007f8cf4d7da3d in QCoreApplication::exec () at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/corelib/kernel/qcoreapplication.cpp:1290
#24 0x00007f8cf52df8dc in QGuiApplication::exec () at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/gui/kernel/qguiapplication.cpp:1611
#25 0x00007f8cf5b2ecb5 in QApplication::exec () at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.6.1/qtbase/src/widgets/kernel/qapplication.cpp:2979
#26 0x000000000040b9aa in main (argc=<optimized out>, argv=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kdevelop5/kf5-kdevelop-devel/work/kf5-kdevelop-5/app/main.cpp:893

Reported using DrKonqi
Comment 1 Andrew Crouthamel 2018-11-01 13:48:13 UTC 
Dear Bug Submitter,

This bug has been stagnant for a long time. Could you help us out and re-test if the bug is valid in the latest version? I am setting the status to NEEDSINFO pending your response, please change the Status back to REPORTED when you respond.

Thank you for helping us make KDE software even better for everyone!
Comment 2 Bug Janitor Service 2018-11-16 11:44:09 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 2018-12-02 03:50:00 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!