Bug 413876 - [KDevelop]: occasional hang on exit
Summary: [KDevelop]: occasional hang on exit
Status: CONFIRMED
Alias: None
Product: kdevelop
Classification: Applications
Component: general (show other bugs)
Version: unspecified
Platform: Compiled Sources Linux
: NOR crash
Target Milestone: ---
Assignee: kdevelop-bugs-null
URL:
Keywords: drkonqi
Depends on:
Blocks:
 
Reported: 2019-11-06 13:10 UTC by RJVB
Modified: 2022-10-13 10:36 UTC (History)
1 user (show)

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Description RJVB 2019-11-06 13:10:49 UTC 
Application: kdevelop (5.4.3 (v5.4.3))
 (Compiled from sources)
Qt Version: 5.9.8
Frameworks Version: 5.60.0
Operating System: Linux 4.14.23-ck1-mainline-core2-rjvb x86_64
Windowing system: X11
Distribution: Ubuntu 14.04.6 LTS

-- Information about the crash:
Occasionally KDevelop will not exit, since 5.4.3 . It doesn't consume any CPU, just sits there waiting for *something*. The corresponding session no longer shows up in `kdevelop -l`.

Unlikely but not entirely impossible: that this is  local case of libxcb missing an end condition in a loop waiting for a reply (I sometimes see that in xcb_wait_for_reply on a remote connection to this same X11 display).

The crash can be reproduced sometimes.

-- Backtrace:
Application: KDevelop (kdevelop), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f300d3bac80 (LWP 8432))]

Thread 7 (Thread 0x7f2fca3c5700 (LWP 8678)):
#0  0x00007f3003cdd37d in read () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f2ffa680a7f in g_wakeup_acknowledge (wakeup=0x7f2fcc002780) at gwakeup.c:210
#2  g_main_context_check (context=0x7f2fc4000990, max_priority=2147483647, fds=0x7f2fc40013c0, n_fds=1) at gmain.c:3686
#3  0x00007f2ffa6817a6 in g_main_context_iterate (context=<optimized out>, block=<optimized out>, dispatch=<optimized out>, self=<optimized out>) at gmain.c:3905
#4  0x00007f2ffa681a21 in g_main_context_iteration (context=0x7f2fc4000990, may_block=1) at gmain.c:3969
#5  0x00007f3004adc41b in QEventDispatcherGlib::processEvents (this=0x7f2fc40008c0, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f3004a882b2 in QEventLoop::processEvents (this=0x7f2fca3c4978, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventloop.cpp:134
#7  QEventLoop::exec (this=0x7f2fca3c4978, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventloop.cpp:212
#8  0x00007f30048d3707 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-5.9.8/qtbase/src/corelib/thread/qthread.cpp:515
#9  0x00007f30048d72c3 in QThreadPrivate::start (arg=0x23b0cc0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/thread/qthread_unix.cpp:368
#10 0x00007f30011db184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007f3003cec03d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7f2fd3dc8700 (LWP 8664)):
#0  0x00007f3003cf9c44 in pthread_mutex_lock () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f2ffa68048d in g_mutex_lock (mutex=<optimized out>) at gthread-posix.c:214
#2  g_main_context_prepare (context=0x7f2fcc000990, priority=0x7f2fd3dc786c) at gmain.c:3483
#3  0x00007f2ffa6815b8 in g_main_context_iterate (context=<optimized out>, block=<optimized out>, dispatch=<optimized out>, self=<optimized out>) at gmain.c:3888
#4  0x00007f2ffa681a21 in g_main_context_iteration (context=0x7f2fcc000990, may_block=1) at gmain.c:3969
#5  0x00007f3004adc41b in QEventDispatcherGlib::processEvents (this=0x7f2fcc0008c0, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f3004a882b2 in QEventLoop::processEvents (this=0x7f2fd3dc7978, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventloop.cpp:134
#7  QEventLoop::exec (this=0x7f2fd3dc7978, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventloop.cpp:212
#8  0x00007f30048d3707 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-5.9.8/qtbase/src/corelib/thread/qthread.cpp:515
#9  0x00007f30048d72c3 in QThreadPrivate::start (arg=0x7f300b8097b8 <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-5.9.8/qtbase/src/corelib/thread/qthread_unix.cpp:368
#10 0x00007f30011db184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007f3003cec03d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7f2fda7f3700 (LWP 8563)):
#0  0x00007f3003cfa50b in clock_gettime () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f3004adbb83 in qt_clock_gettime (clock=1, ts=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qelapsedtimer_unix.cpp:111
#2  do_gettime (sec=<optimized out>, frac=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qelapsedtimer_unix.cpp:166
#3  qt_gettime () at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qelapsedtimer_unix.cpp:175
#4  0x00007f3004ada533 in QTimerInfoList::updateCurrentTime (this=0x7f2fd4002d20) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qtimerinfo_unix.cpp:91
#5  QTimerInfoList::timerWait (this=0x7f2fd4002d20, tm=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qtimerinfo_unix.cpp:388
#6  0x00007f3004adcc78 in timerSourcePrepareHelper (src=<optimized out>, timeout=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:132
#7  idleTimerSourcePrepare (source=<optimized out>, timeout=0x7f2fda7f2748) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:212
#8  0x00007f2ffa680462 in g_main_context_prepare (context=0x7f2fd4000990, priority=0x7f2fda7f27ec) at gmain.c:3480
#9  0x00007f2ffa6815b8 in g_main_context_iterate (context=<optimized out>, block=<optimized out>, dispatch=<optimized out>, self=<optimized out>) at gmain.c:3888
#10 0x00007f2ffa681a21 in g_main_context_iteration (context=0x7f2fd4000990, may_block=1) at gmain.c:3969
#11 0x00007f3004adc41b in QEventDispatcherGlib::processEvents (this=0x7f2fd40008c0, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:425
#12 0x00007f3004a882b2 in QEventLoop::processEvents (this=0x7f2fda7f28f8, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventloop.cpp:134
#13 QEventLoop::exec (this=0x7f2fda7f28f8, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventloop.cpp:212
#14 0x00007f30048d3707 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-5.9.8/qtbase/src/corelib/thread/qthread.cpp:515
#15 0x00007f300bd0affe in KDevelop::DUChainPrivate::CleanupThread::run (this=0x17f9220) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-kdevelop/kf5-kdevelop-devel/work/kf5-kdevelop-5/kdevplatform/language/duchain/duchain.cpp:328
#16 0x00007f30048d72c3 in QThreadPrivate::start (arg=0x17f9220) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/thread/qthread_unix.cpp:368
#17 0x00007f30011db184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#18 0x00007f3003cec03d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7f2fe0c98700 (LWP 8462)):
#0  0x00007f3003cdd37d in read () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f2ffa680a7f in g_wakeup_acknowledge (wakeup=0xc4b7b0) at gwakeup.c:210
#2  g_main_context_check (context=0x7f2fdc000990, max_priority=2147483647, fds=0x7f2fdc0013c0, n_fds=1) at gmain.c:3686
#3  0x00007f2ffa6817a6 in g_main_context_iterate (context=<optimized out>, block=<optimized out>, dispatch=<optimized out>, self=<optimized out>) at gmain.c:3905
#4  0x00007f2ffa681a21 in g_main_context_iteration (context=0x7f2fdc000990, may_block=1) at gmain.c:3969
#5  0x00007f3004adc41b in QEventDispatcherGlib::processEvents (this=0x7f2fdc0008c0, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f3004a882b2 in QEventLoop::processEvents (this=0x7f2fe0c97948, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventloop.cpp:134
#7  QEventLoop::exec (this=0x7f2fe0c97948, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventloop.cpp:212
#8  0x00007f30048d3707 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-5.9.8/qtbase/src/corelib/thread/qthread.cpp:515
#9  0x00007f30060b7610 in QDBusConnectionManager::run (this=0x7f30063172e0 <(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-5.9.8/qtbase/src/dbus/qdbusconnection.cpp:178
#10 0x00007f30048d72c3 in QThreadPrivate::start (arg=0x7f30063172e0 <(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-5.9.8/qtbase/src/corelib/thread/qthread_unix.cpp:368
#11 0x00007f30011db184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#12 0x00007f3003cec03d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7f2fe7fff700 (LWP 8436)):
#0  0x00007f30011df404 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f2fed5ab9cb in cnd_wait (cond=<optimized out>, mtx=<optimized out>) at ../mesa-18.3.3/src/../include/c11/threads_posix.h:155
#2  util_queue_thread_func (input=<optimized out>) at ../mesa-18.3.3/src/util/u_queue.c:270
#3  0x00007f2fed5ac2e6 in impl_thrd_routine (p=<optimized out>) at ../mesa-18.3.3/src/../include/c11/threads_posix.h:87
#4  0x00007f30011db184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007f3003cec03d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7f2fef081700 (LWP 8435)):
#0  0x00007f3003cdec9d in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f2ff90f8ab2 in _xcb_conn_wait () from /opt/local/lib/libxcb.so.1
#2  0x00007f2ff90faeba in xcb_wait_for_event () from /opt/local/lib/libxcb.so.1
#3  0x00007f2ff0fd6af9 in QXcbEventReader::run (this=0x726d60) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/plugins/platforms/xcb/qxcbconnection.cpp:1330
#4  0x00007f30048d72c3 in QThreadPrivate::start (arg=0x726d60) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/thread/qthread_unix.cpp:368
#5  0x00007f30011db184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007f3003cec03d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7f300d3bac80 (LWP 8432)):
[KCrash Handler]
#6  0x00007f3003cdec9d in poll () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007f2ffa681761 in g_main_context_poll (priority=0, context=<optimized out>, timeout=<optimized out>, fds=<optimized out>, n_fds=<optimized out>) at gmain.c:4209
#8  g_main_context_iterate (context=<optimized out>, block=<optimized out>, dispatch=<optimized out>, self=<optimized out>) at gmain.c:3903
#9  0x00007f2ffa681a21 in g_main_context_iteration (context=0x7f2fe8003030, may_block=1) at gmain.c:3969
#10 0x00007f3004adc41b in QEventDispatcherGlib::processEvents (this=0x91b8c0, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:425
#11 0x00007f3004a882b2 in QEventLoop::processEvents (this=0x7ffc3f3b1820, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventloop.cpp:134
#12 QEventLoop::exec (this=0x7ffc3f3b1820, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.8/qtbase/src/corelib/kernel/qeventloop.cpp:212
#13 0x00007f3004a8caed 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-5.9.8/qtbase/src/corelib/kernel/qcoreapplication.cpp:1304
#14 0x000000000041383f in main (argc=<optimized out>, argv=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-kdevelop/kf5-kdevelop-devel/work/kf5-kdevelop-5/app/main.cpp:1002

Possible duplicates by query: bug 413509, bug 413349, bug 413345, bug 413319, bug 413291.

Reported using DrKonqi
Comment 1 Justin Zobel 2022-09-28 00:43:06 UTC 
Thank you for reporting this crash in KDE software. As it has been a while since this issue was reported, can we please ask you to see if you can reproduce the crash with a recent software version?

If you can reproduce the issue, please change the status to "CONFIRMED" when replying. Thank you!
Comment 2 Bug Janitor Service 2022-10-13 04:55:03 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 RJVB 2022-10-13 10:36:10 UTC 
KDevelop continues to hang on exit, occasionally.