[konsole] [Bug 418543] New: konsole segfault while searching in the history

Fri Mar 6 13:11:06 GMT 2020

https://bugs.kde.org/show_bug.cgi?id=418543

            Bug ID: 418543
           Summary: konsole segfault while searching in the history
           Product: konsole
           Version: 18.12.3
          Platform: Kubuntu Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: history
          Assignee: konsole-devel at kde.org
          Reporter: rainer+kdebugs at 7val.com
  Target Milestone: ---

Crash while clicking the previous/next buttons repeatedly in the history search
while the system was under load.
Possibly related to https://bugs.kde.org/show_bug.cgi?id=360146

Application: Konsole (konsole), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7cd6adcf80 (LWP 3309))]

Thread 5 (Thread 0x7f7cc4d2e700 (LWP 21925)):
#0  __GI___libc_read (nbytes=10, buf=0x7f7cc4d2dbde, fd=76) at
../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=76, buf=0x7f7cc4d2dbde, nbytes=10) at
../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f7cd74c01f1 in pa_read () from
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#3  0x00007f7cd9699e3e in pa_mainloop_prepare () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f7cd969a8a0 in pa_mainloop_iterate () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f7cd969a960 in pa_mainloop_run () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f7cd96a8939 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#7  0x00007f7cd74ef788 in ?? () from
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#8  0x00007f7cda252182 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#9  0x00007f7cdcd69b1f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f7ccd57f700 (LWP 3312)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55b77d04d208) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b77d04d1b8,
cond=0x55b77d04d1e0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b77d04d1e0, mutex=0x55b77d04d1b8) at
pthread_cond_wait.c:655
#3  0x00007f7ccdb9536b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f7ccdb950d7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f7cda252182 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#6  0x00007f7cdcd69b1f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f7ccff47700 (LWP 3311)):
#0  __GI___libc_read (nbytes=16, buf=0x7f7ccff46b50, fd=7) at
../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=7, buf=0x7f7ccff46b50, nbytes=16) at
../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f7cd9a7e410 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7cd9a376cf in g_main_context_check () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7cd9a37ba0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7cd9a37d1c in g_main_context_iteration () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f7cdb610063 in QEventDispatcherGlib::processEvents
(this=0x7f7cc8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#7  0x00007f7cdb5bb5bb in QEventLoop::exec (this=this at entry=0x7f7ccff46d70,
flags=..., flags at entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#8  0x00007f7cdb4062c6 in QThread::exec (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#9  0x00007f7cdab65565 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f7cdb407612 in QThreadPrivate::start (arg=0x7f7cdabe5d80) at
thread/qthread_unix.cpp:361
#11 0x00007f7cda252182 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#12 0x00007f7cdcd69b1f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f7cd5830700 (LWP 3310)):
#0  0x00007f7cdcd5d729 in __GI___poll (fds=0x7f7cd582fca8, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7cda482917 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f7cda48453a in xcb_wait_for_event () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f7cd641b6a8 in QXcbEventQueue::run (this=0x55b77cff44d0) at
qxcbeventqueue.cpp:228
#4  0x00007f7cdb407612 in QThreadPrivate::start (arg=0x55b77cff44d0) at
thread/qthread_unix.cpp:361
#5  0x00007f7cda252182 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#6  0x00007f7cdcd69b1f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f7cd6adcf80 (LWP 3309)):
[KCrash Handler]
#6  0x00007f7cdcba1760 in Konsole::Screen::copyLineToStream
(this=this at entry=0x7f7cd00116e0, line=line at entry=8704, start=<optimized out>,
count=-702720, count at entry=-1, decoder=decoder at entry=0x7fff29dc0d90,
appendNewLine=appendNewLine at entry=true, options=...) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qflags.h:150
#7  0x00007f7cdcba18f1 in Konsole::Screen::writeToStream (this=0x7f7cd00116e0,
decoder=0x7fff29dc0d90, startIndex=<optimized out>, endIndex=<optimized out>,
options=...) at ./src/Screen.cpp:1269
#8  0x00007f7cdcbbc308 in Konsole::SearchHistoryTask::executeOnScreenWindow
(this=this at entry=0x55b77e85b6c0, session=..., window=...) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:596
#9  0x00007f7cdcbbc7aa in Konsole::SearchHistoryTask::execute
(this=0x55b77e85b6c0) at /usr/include/c++/8/bits/atomic_base.h:295
#10 0x00007f7cdcbbb0aa in Konsole::SessionController::beginSearch
(this=this at entry=0x55b77d77b590, text=...,
direction=direction at entry=Konsole::Enum::BackwardsSearch) at
./src/SessionController.cpp:1345
#11 0x00007f7cdcbbb473 in Konsole::SessionController::findNextInHistory
(this=0x55b77d77b590) at /usr/include/c++/8/bits/atomic_base.h:390
#12 0x00007f7cdb5e6563 in QtPrivate::QSlotObjectBase::call (a=0x7fff29dc0fd0,
r=0x55b77d77b590, this=0x55b77d7ca0a0) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:394
#13 QMetaObject::activate (sender=0x55b77d786170, signalOffset=<optimized out>,
local_signal_index=<optimized out>, argv=<optimized out>) at
kernel/qobject.cpp:3774
#14 0x00007f7cdb5e6563 in QtPrivate::QSlotObjectBase::call (a=0x7fff29dc1120,
r=0x55b77d786170, this=0x55b77d764270) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:394
#15 QMetaObject::activate (sender=0x55b77d763980, signalOffset=<optimized out>,
local_signal_index=<optimized out>, argv=<optimized out>) at
kernel/qobject.cpp:3774
#16 0x00007f7cdc06d032 in QAbstractButton::clicked
(this=this at entry=0x55b77d763980, _t1=<optimized out>) at
.moc/moc_qabstractbutton.cpp:312
#17 0x00007f7cdc06d24a in QAbstractButtonPrivate::emitClicked
(this=0x55b77d763ae0) at widgets/qabstractbutton.cpp:414
#18 0x00007f7cdc06df33 in QAbstractButton::click (this=0x55b77d763980) at
widgets/qabstractbutton.cpp:871
#19 QAbstractButton::click (this=0x55b77d763980) at
widgets/qabstractbutton.cpp:857
#20 0x00007f7cdcb7d910 in Konsole::IncrementalSearchBar::eventFilter
(this=0x55b77d786170, watched=0x55b77d7859b0, event=0x7fff29dc1760) at
./src/IncrementalSearchBar.cpp:221
#21 0x00007f7cdb5bc5fb in
QCoreApplicationPrivate::sendThroughObjectEventFilters (event=<optimized out>,
receiver=<optimized out>) at kernel/qcoreapplication.cpp:1186
#22 QCoreApplicationPrivate::sendThroughObjectEventFilters
(receiver=receiver at entry=0x55b77d7859b0, event=event at entry=0x7fff29dc1760) at
kernel/qcoreapplication.cpp:1175
#23 0x00007f7cdbf84541 in QApplicationPrivate::notify_helper
(this=this at entry=0x55b77cff0240, receiver=receiver at entry=0x55b77d7859b0,
e=e at entry=0x7fff29dc1760) at kernel/qapplication.cpp:3728
#24 0x00007f7cdbf8c852 in QApplication::notify (this=<optimized out>,
receiver=0x55b77d7859b0, e=0x7fff29dc1760) at kernel/qapplication.cpp:3115
#25 0x00007f7cdb5bc8e9 in QCoreApplication::notifyInternal2
(receiver=0x55b77d7859b0, event=0x7fff29dc1760) at
../../include/QtCore/5.12.2/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:322
#26 0x00007f7cdbfe152a in QWidgetWindow::event (event=0x7fff29dc1760,
this=0x55b77d6170e0) at kernel/qwidgetwindow.cpp:274
#27 QWidgetWindow::event (this=0x55b77d6170e0, event=0x7fff29dc1760) at
kernel/qwidgetwindow.cpp:224
#28 0x00007f7cdbf84551 in QApplicationPrivate::notify_helper
(this=this at entry=0x55b77cff0240, receiver=receiver at entry=0x55b77d6170e0,
e=e at entry=0x7fff29dc1760) at kernel/qapplication.cpp:3736
#29 0x00007f7cdbf8b930 in QApplication::notify (this=0x55b77cff0040,
receiver=0x55b77d6170e0, e=0x7fff29dc1760) at kernel/qapplication.cpp:3483
#30 0x00007f7cdb5bc8e9 in QCoreApplication::notifyInternal2
(receiver=0x55b77d6170e0, event=0x7fff29dc1760) at
../../include/QtCore/5.12.2/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:322
#31 0x00007f7cdb98efd3 in QGuiApplicationPrivate::processKeyEvent
(e=0x55b77d7857e0) at kernel/qguiapplication.cpp:2228
#32 0x00007f7cdb994055 in QGuiApplicationPrivate::processWindowSystemEvent
(e=e at entry=0x55b77d7857e0) at kernel/qguiapplication.cpp:1843
#33 0x00007f7cdb96e05b in QWindowSystemInterface::sendWindowSystemEvents
(flags=flags at entry=...) at kernel/qwindowsysteminterface.cpp:1071
#34 0x00007f7cd641c67a in xcbSourceDispatch (source=<optimized out>) at
qxcbeventdispatcher.cpp:105
#35 0x00007f7cd9a379ee in g_main_context_dispatch () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f7cd9a37c88 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f7cd9a37d1c in g_main_context_iteration () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f7cdb610047 in QEventDispatcherGlib::processEvents
(this=0x55b77d048eb0, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#39 0x00007f7cdb5bb5bb in QEventLoop::exec (this=this at entry=0x7fff29dc1a70,
flags=..., flags at entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#40 0x00007f7cdb5c35e2 in QCoreApplication::exec () at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#41 0x00007f7cdb988e4c in QGuiApplication::exec () at
kernel/qguiapplication.cpp:1779
#42 0x00007f7cdbf844c5 in QApplication::exec () at kernel/qapplication.cpp:2893
#43 0x00007f7cdce5ef1a in kdemain (argc=<optimized out>, argv=<optimized out>)
at ./src/main.cpp:207
#44 0x00007f7cdcc72b6b in __libc_start_main (main=0x55b77ca5e050 <main>,
argc=1, argv=0x7fff29dc1d28, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fff29dc1d18) at ../csu/libc-start.c:308
#45 0x000055b77ca5e08a in _start ()
[Inferior 1 (process 3309) detached]

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