227010 2010-02-15 15:57:53 +0000 Plasma crashes randomly (CWP widget uses eventloop on a different thread) 2010-04-30 19:48:55 +0000 1 1 10 Unmaintained plasma4 general unspecified Ubuntu Linux RESOLVED DOWNSTREAM NOR crash --- 0 fgunni plasma-bugs-null andresbajotierra brain cordlandwehr francismacomber privat sarinka239 spielmail till2.schaefer 0 oldest_to_newest 917390 0 fgunni 2010-02-15 15:57:53 +0000 Application: plasma-desktop (0.3) KDE Platform Version: 4.4.00 (KDE 4.4.0) Qt Version: 4.6.1 Operating System: Linux 2.6.31-20-generic x86_64 Distribution: Ubuntu 9.10 -- Information about the crash: Plasma-desktop crashes sometimes, no special cause. This crash was when just browsing in Firefox, but does crash randomly. -- Backtrace: Application: Plasma-Arbeitsfläche (kdeinit4), signal: Segmentation fault pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261 in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S The current source language is "auto; currently asm". [Current thread is 1 (Thread 0x7f85f4d6d7f0 (LWP 24021))] Thread 9 (Thread 0x7f85d00d1910 (LWP 24022)): #0 0xffffffffff60017b in ?? () #1 0x00007f85d00d0c50 in ?? () #2 0x00007fffdc9ff782 in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?) Thread 8 (Thread 0x7f85cf086910 (LWP 24023)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261 #1 0x00007f85e9fc3b86 in ?? () from /usr/lib/libQtWebKit.so.4 #2 0x00007f85e9fc3bc9 in ?? () from /usr/lib/libQtWebKit.so.4 #3 0x00007f85f2fc0a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300 #4 0x00007f85f1d8580d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #5 0x0000000000000000 in ?? () Thread 7 (Thread 0x7f85cd5ff910 (LWP 24024)): [KCrash Handler] #5 0x00007f85f3358a69 in QMetaObject::addGuard (ptr=0x7f85cd5f8be0) at kernel/qobject.cpp:430 #6 0x00007f85f3e44ee7 in QPointer (this=0x1b48250, job=0x7f85c8021ef0) at /usr/include/qt4/QtCore/qpointer.h:60 #7 KIO::SchedulerPrivate::ProtocolInfo::findJobCoSlave (this=0x1b48250, job=0x7f85c8021ef0) at ../../kio/kio/scheduler.cpp:204 #8 KIO::SchedulerPrivate::cancelJob (this=0x1b48250, job=0x7f85c8021ef0) at ../../kio/kio/scheduler.cpp:510 #9 0x00007f85f3d96d41 in ~SimpleJob (this=0x7f85c8021ef0, __in_chrg=<value optimized out>) at ../../kio/kio/job.cpp:382 #10 0x00007f85f3d96e97 in ~TransferJob (this=0x0, __in_chrg=<value optimized out>) at ../../kio/kio/job.cpp:939 #11 0x00007f85f3353c9d in QObject::event (this=0x7f85c8021ef0, e=0x7f85c807dff0) at kernel/qobject.cpp:1231 #12 0x00007f85f24e2fac in QApplicationPrivate::notify_helper (this=0x1488990, receiver=0x7f85c8021ef0, e=0x7f85c807dff0) at kernel/qapplication.cpp:4298 #13 0x00007f85f24e959b in QApplication::notify (this=0x144c610, receiver=0x7f85c8021ef0, e=0x7f85c807dff0) at kernel/qapplication.cpp:4181 #14 0x00007f85f388bd16 in KApplication::notify (this=0x144c610, receiver=0x7f85c8021ef0, event=0x7f85c807dff0) at ../../kdeui/kernel/kapplication.cpp:302 #15 0x00007f85f3343f3c in QCoreApplication::notifyInternal (this=0x144c610, receiver=0x7f85c8021ef0, event=0x7f85c807dff0) at kernel/qcoreapplication.cpp:704 #16 0x00007f85f33466b7 in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x1cd1130) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215 #17 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x1cd1130) at kernel/qcoreapplication.cpp:1345 #18 0x00007f85f336d923 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220 #19 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276 #20 0x00007f85ee54abce in g_main_context_dispatch () from /lib/libglib-2.0.so.0 #21 0x00007f85ee54e598 in ?? () from /lib/libglib-2.0.so.0 #22 0x00007f85ee54e6c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0 #23 0x00007f85f336d463 in QEventDispatcherGlib::processEvents (this=0x1cd1f90, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412 #24 0x00007f85f3342862 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149 #25 0x00007f85f3342c3c in QEventLoop::exec (this=0x7f85cd5f9670, flags=) at kernel/qeventloop.cpp:201 #26 0x00007f85f3e3187c in KIO::NetAccess::enter_loop (this=0x7f85cd5f9710) at ../../kio/kio/netaccess.cpp:502 #27 0x00007f85f3e31ecf in KIO::NetAccess::synchronousRunInternal (this=0x7f85cd5f9710, job=0x7f85c802cc50, window=<value optimized out>, data=0x7f85cd5f9800, finalURL=0x0, metaData=0x0) at ../../kio/kio/netaccess.cpp:487 #28 0x00007f85f3e32681 in KIO::NetAccess::synchronousRun (job=0x7f85c802cc50, window=0x0, data=0x7f85cd5f9800, finalURL=0x0, metaData=<value optimized out>) at ../../kio/kio/netaccess.cpp:277 #29 0x00007f85d41adc95 in ?? () from /usr/lib/kde4/plasma_applet_cwp.so #30 0x00007f85d41b786d in ?? () from /usr/lib/kde4/plasma_applet_cwp.so #31 0x00007f85d41b9fb2 in ?? () from /usr/lib/kde4/plasma_applet_cwp.so #32 0x00007f85f324f745 in QThreadPrivate::start (arg=0x1cd0d90) at thread/qthread_unix.cpp:248 #33 0x00007f85f2fc0a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300 #34 0x00007f85f1d8580d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #35 0x0000000000000000 in ?? () Thread 6 (Thread 0x7f85c5284910 (LWP 24028)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261 #1 0x00007f85e6645396 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f85e6923220) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2304 #2 0x00007f85e66453d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f85e69312ec) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1438 #3 0x00007f85f2fc0a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300 #4 0x00007f85f1d8580d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #5 0x0000000000000000 in ?? () The current source language is "auto; currently c". Thread 5 (Thread 0x7f85c73db910 (LWP 14201)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261 #1 0x00007f85f32506fb in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x1e3b570, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87 #2 QWaitCondition::wait (this=<value optimized out>, mutex=0x1e3b570, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159 #3 0x00007f85e9794096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e3b000, th=0x24ea2d0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365 #4 0x00007f85e979674b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1e4b5f0, th=0x24ea2d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71 #5 0x00007f85e9794bff in ThreadWeaver::ThreadRunHelper::run (this=0x7f85c73dafb0, parent=0x1e3b000, th=0x24ea2d0) at ../../../threadweaver/Weaver/Thread.cpp:87 #6 0x00007f85e9795058 in ThreadWeaver::Thread::run (this=0x24ea2d0) at ../../../threadweaver/Weaver/Thread.cpp:142 #7 0x00007f85f324f745 in QThreadPrivate::start (arg=0x24ea2d0) at thread/qthread_unix.cpp:248 #8 0x00007f85f2fc0a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300 #9 0x00007f85f1d8580d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #10 0x0000000000000000 in ?? () The current source language is "auto; currently asm". Thread 4 (Thread 0x7f85bba16910 (LWP 14202)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261 #1 0x00007f85f32506fb in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x1e3b570, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87 #2 QWaitCondition::wait (this=<value optimized out>, mutex=0x1e3b570, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159 #3 0x00007f85e9794096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e3b000, th=0x7f85c803a700) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365 #4 0x00007f85e979674b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1e4b5f0, th=0x7f85c803a700) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71 #5 0x00007f85e9794bff in ThreadWeaver::ThreadRunHelper::run (this=0x7f85bba15fb0, parent=0x1e3b000, th=0x7f85c803a700) at ../../../threadweaver/Weaver/Thread.cpp:87 #6 0x00007f85e9795058 in ThreadWeaver::Thread::run (this=0x7f85c803a700) at ../../../threadweaver/Weaver/Thread.cpp:142 #7 0x00007f85f324f745 in QThreadPrivate::start (arg=0x7f85c803a700) at thread/qthread_unix.cpp:248 #8 0x00007f85f2fc0a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300 #9 0x00007f85f1d8580d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #10 0x0000000000000000 in ?? () Thread 3 (Thread 0x7f85b670f910 (LWP 14203)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261 #1 0x00007f85f32506fb in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x1e3b570, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87 #2 QWaitCondition::wait (this=<value optimized out>, mutex=0x1e3b570, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159 #3 0x00007f85e9794096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e3b000, th=0x7f85c801d8f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365 #4 0x00007f85e979674b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1e4b5f0, th=0x7f85c801d8f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71 #5 0x00007f85e9794bff in ThreadWeaver::ThreadRunHelper::run (this=0x7f85b670efb0, parent=0x1e3b000, th=0x7f85c801d8f0) at ../../../threadweaver/Weaver/Thread.cpp:87 #6 0x00007f85e9795058 in ThreadWeaver::Thread::run (this=0x7f85c801d8f0) at ../../../threadweaver/Weaver/Thread.cpp:142 #7 0x00007f85f324f745 in QThreadPrivate::start (arg=0x7f85c801d8f0) at thread/qthread_unix.cpp:248 #8 0x00007f85f2fc0a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300 #9 0x00007f85f1d8580d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #10 0x0000000000000000 in ?? () Thread 2 (Thread 0x7f85b5f0e910 (LWP 14204)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261 #1 0x00007f85f32506fb in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x1e3b570, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87 #2 QWaitCondition::wait (this=<value optimized out>, mutex=0x1e3b570, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159 #3 0x00007f85e9794096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e3b000, th=0x21ecd40) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365 #4 0x00007f85e979674b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1e4b5f0, th=0x21ecd40) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71 #5 0x00007f85e9794bff in ThreadWeaver::ThreadRunHelper::run (this=0x7f85b5f0dfb0, parent=0x1e3b000, th=0x21ecd40) at ../../../threadweaver/Weaver/Thread.cpp:87 #6 0x00007f85e9795058 in ThreadWeaver::Thread::run (this=0x21ecd40) at ../../../threadweaver/Weaver/Thread.cpp:142 #7 0x00007f85f324f745 in QThreadPrivate::start (arg=0x21ecd40) at thread/qthread_unix.cpp:248 #8 0x00007f85f2fc0a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300 #9 0x00007f85f1d8580d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #10 0x0000000000000000 in ?? () Thread 1 (Thread 0x7f85f4d6d7f0 (LWP 24021)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261 #1 0x00007f85f324ee73 in QMutexPrivate::wait (this=0x1499f20, timeout=-1) at thread/qmutex_unix.cpp:84 #2 0x00007f85f324a9f5 in QMutex::lock (this=0x14bf380) at thread/qmutex.cpp:205 #3 0x00007f85f3358ba8 in QMutexLocker::relock (ptr=0x7fffdc8c49a0) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:120 #4 QMutexLocker (ptr=0x7fffdc8c49a0) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:102 #5 QMetaObject::addGuard (ptr=0x7fffdc8c49a0) at kernel/qobject.cpp:429 #6 0x00007f85f3d69efb in QPointer (this=0x2d5da70) at /usr/include/qt4/QtCore/qpointer.h:60 #7 KIO::SocketConnectionBackend::socketReadyRead (this=0x2d5da70) at ../../kio/kio/connection.cpp:358 #8 0x00007f85f3d6a140 in KIO::SocketConnectionBackend::qt_metacall (this=0x2d5da70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>) at ./connection_p.moc:158 #9 0x00007f85f3356d3f in QMetaObject::activate (sender=0x25416d0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xffffffffffffffff) at kernel/qobject.cpp:3275 #10 0x00007f85f1a22f1f in QAbstractSocketPrivate::canReadNotification (this=0x2e01730) at socket/qabstractsocket.cpp:626 #11 0x00007f85f1a127a1 in QReadNotifier::event (this=<value optimized out>, e=0x80) at socket/qnativesocketengine.cpp:1089 #12 0x00007f85f24e2fac in QApplicationPrivate::notify_helper (this=0x1488990, receiver=0x26f2270, e=0x7fffdc8c5060) at kernel/qapplication.cpp:4298 #13 0x00007f85f24e959b in QApplication::notify (this=0x144c610, receiver=0x26f2270, e=0x7fffdc8c5060) at kernel/qapplication.cpp:4181 #14 0x00007f85f388bd16 in KApplication::notify (this=0x144c610, receiver=0x26f2270, event=0x7fffdc8c5060) at ../../kdeui/kernel/kapplication.cpp:302 #15 0x00007f85f3343f3c in QCoreApplication::notifyInternal (this=0x144c610, receiver=0x26f2270, event=0x7fffdc8c5060) at kernel/qcoreapplication.cpp:704 #16 0x00007f85f336d81a in QCoreApplication::sendEvent (source=0x148beb0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215 #17 socketNotifierSourceDispatch (source=0x148beb0) at kernel/qeventdispatcher_glib.cpp:110 #18 0x00007f85ee54abce in g_main_context_dispatch () from /lib/libglib-2.0.so.0 #19 0x00007f85ee54e598 in ?? () from /lib/libglib-2.0.so.0 #20 0x00007f85ee54e6c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0 #21 0x00007f85f336d463 in QEventDispatcherGlib::processEvents (this=0x14011c0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412 #22 0x00007f85f25927ee in QGuiEventDispatcherGlib::processEvents (this=0x1499f6c, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204 #23 0x00007f85f3342862 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149 #24 0x00007f85f3342c3c in QEventLoop::exec (this=0x7fffdc8c52c0, flags=) at kernel/qeventloop.cpp:201 #25 0x00007f85f334697b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981 #26 0x00007f85e6bd60a2 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/desktop/shell/main.cpp:112 #27 0x0000000000406fb8 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x40a499 "0") at ../../kinit/kinit.cpp:717 #28 0x0000000000407c70 in handle_launcher_request (sock=9, who=<value optimized out>) at ../../kinit/kinit.cpp:1209 #29 0x0000000000408121 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1402 #30 0x0000000000408df2 in main (argc=4, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1841 Reported using DrKonqi 917418 1 andresbajotierra 2010-02-15 16:14:50 +0000 The crash seems to be related to the CWP widget. - Does the random crashes stop if you remove it from your Plasma Desktop ? - Did you recompiled it / reinstalled it after updating to KDE SC 4.4. ? Regards 918940 2 fgunni 2010-02-17 12:07:54 +0000 Ok, i now did remove the CWP widget and will report if the crashes still occur. Anyway should plasma-desktop really crash if a plasmoid crashes? I think it would be better if plasma-desktop catches the crash and stays alive. 918964 3 andresbajotierra 2010-02-17 13:00:45 +0000 That's a another big issue: bug 199754. Regards 924670 4 andresbajotierra 2010-02-26 13:44:46 +0000 Reporter on bug 227787 confirmed that if CWP is not used, Plasma doesn't crash with this backtrace. Looking at the code, it is using synchronus calls using KIO, (on a different thread) and that is not allowed by KIO (it will generate random crashes) Please report to the CWP author (kde-look.org page) Regards 924672 5 andresbajotierra 2010-02-26 13:45:01 +0000 *** Bug 227787 has been marked as a duplicate of this bug. *** 924674 6 andresbajotierra 2010-02-26 13:45:12 +0000 *** Bug 227679 has been marked as a duplicate of this bug. *** 924676 7 andresbajotierra 2010-02-26 13:45:18 +0000 *** Bug 227643 has been marked as a duplicate of this bug. *** 933325 8 andresbajotierra 2010-03-14 13:24:22 +0000 *** Bug 230673 has been marked as a duplicate of this bug. *** 933343 9 fgunni 2010-03-14 13:36:04 +0000 I contacted the author of CWP, and he sais: "Which version are you using? >= cwp-0.9.14 should make asynchronous downloads from the gui thread, which should be fine." I am on Ubuntu Lucid now with cwp-0.9.18 and no more crashes from cwp. So for everyone having this crash can update to newer cwp and should be solved for them. 940112 10 andresbajotierra 2010-03-25 22:22:24 +0000 *** Bug 232142 has been marked as a duplicate of this bug. *** 940659 11 andresbajotierra 2010-03-26 20:17:30 +0000 *** Bug 232249 has been marked as a duplicate of this bug. *** 955199 12 asraniel 2010-04-30 19:48:55 +0000 *** Bug 235830 has been marked as a duplicate of this bug. ***