| Summary: | Plasma crashes randomly (CWP widget uses eventloop on a different thread) | ||
|---|---|---|---|
| Product: | [Unmaintained] plasma4 | Reporter: | Frank Sagurna <fgunni> |
| Component: | general | Assignee: | Plasma Bugs List <plasma-bugs> |
| Status: | RESOLVED DOWNSTREAM | ||
| Severity: | crash | CC: | andresbajotierra, brain, cordlandwehr, francismacomber, privat, sarinka239, spielmail, till2.schaefer |
| Priority: | NOR | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | Ubuntu | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
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 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. That's a another big issue: bug 199754. Regards 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 *** Bug 227787 has been marked as a duplicate of this bug. *** *** Bug 227679 has been marked as a duplicate of this bug. *** *** Bug 227643 has been marked as a duplicate of this bug. *** *** Bug 230673 has been marked as a duplicate of this bug. *** 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.
*** Bug 232142 has been marked as a duplicate of this bug. *** *** Bug 232249 has been marked as a duplicate of this bug. *** *** Bug 235830 has been marked as a duplicate of this bug. *** |
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