Bug 281905

Summary:	Kde crash after i've clicked on firefox via start menu
Product:	[Plasma] kwin	Reporter:	Luca Magistrelli <blackstorm010>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	crash
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Luca Magistrelli 2011-09-12 21:37:12 UTC

Application: kwin (4.6.2 (4.6.2))
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
Kde crash after i've clicked on firefox via start menu......

-- Backtrace:
Application: KWin (kwin), signal: Bus error
[Current thread is 1 (Thread 0x7f92a7e8b7a0 (LWP 3348))]

Thread 3 (Thread 0x7f928b84e700 (LWP 3358)):
#0  0x00007f92a76d2143 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f92a3ab032c in qt_safe_select (nfds=18, fdread=0x1d57440, fdwrite=0x1d576d8, fdexcept=0x1d57970, orig_timeout=<value optimized out>) at kernel/qcore_unix.cpp:82
#2  0x00007f92a3ab53d0 in QEventDispatcherUNIXPrivate::doSelect (this=0x1d57280, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:219
#3  0x00007f92a3ab604a in QEventDispatcherUNIX::processEvents (this=0x1c90f10, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#4  0x00007f92a3a87882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f92a3a87abc in QEventLoop::exec (this=0x7f928b84ddb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f92a399e924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f92a3a69c2f in QInotifyFileSystemWatcherEngine::run (this=0x1cce930) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f92a39a1175 in QThreadPrivate::start (arg=0x1cce930) at thread/qthread_unix.cpp:320
#9  0x00007f929e090d8c in start_thread (arg=0x7f928b84e700) at pthread_create.c:304
#10 0x00007f92a76da04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f928b03d700 (LWP 3359)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f92a65392a2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f92a6852180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f92a65392d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f92a6860254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f929e090d8c in start_thread (arg=0x7f928b03d700) at pthread_create.c:304
#4  0x00007f92a76da04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f92a7e8b7a0 (LWP 3348)):
[KCrash Handler]
#6  0x00007f92a426bcdf in lock (this=0x7fffa6c9a270, _d=<value optimized out>) at ../../kdecore/util/kshareddatacache.cpp:1098
#7  cautiousLock (this=0x7fffa6c9a270, _d=<value optimized out>) at ../../kdecore/util/kshareddatacache.cpp:1121
#8  KSharedDataCache::Private::CacheLocker::CacheLocker (this=0x7fffa6c9a270, _d=<value optimized out>) at ../../kdecore/util/kshareddatacache.cpp:1146
#9  0x00007f92a42686e0 in KSharedDataCache::find (this=0x1272cc0, key=..., destination=0x7fffa6c9a320) at ../../kdecore/util/kshareddatacache.cpp:1462
#10 0x00007f92a7185e43 in KIconLoaderPrivate::findCachedPixmapWithPath (this=0x126c5c0, key=..., data=..., path=...) at ../../kdeui/icons/kiconloader.cpp:868
#11 0x00007f92a7188d39 in KIconLoader::loadIcon (this=0x125ae30, _name=<value optimized out>, group=KIconLoader::Small, size=16, state=0, overlays=..., path_store=0x0, canReturnNull=true) at ../../kdeui/icons/kiconloader.cpp:1231
#12 0x00007f928ddaf109 in KWin::StartupFeedbackEffect::start (this=0x1d21360, icon=...) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:298
#13 0x00007f928ddaf2a8 in KWin::StartupFeedbackEffect::gotNewStartup (this=0x1d21360, id=<value optimized out>, data=<value optimized out>) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:261
#14 0x00007f928dd3709a in KWin::StartupFeedbackEffect::qt_metacall (this=0x1d21360, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa6c9a8c0) at moc_startupfeedback.cpp:79
#15 0x00007f92a3a9d5f8 in QMetaObject::activate (sender=0x1f3e6c0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffa6c9a8c0) at kernel/qobject.cpp:3287
#16 0x00007f92a71f3247 in KStartupInfo::gotNewStartup (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>) at ./kstartupinfo.moc:106
#17 0x00007f92a71f65a3 in KStartupInfo::Private::new_startup_info_internal (this=0x1fd50b0, id_P=..., data_P=..., update_P=false) at ../../kdeui/kernel/kstartupinfo.cpp:363
#18 0x00007f92a71f774b in KStartupInfo::Private::got_startup_info (this=0x1fd50b0, msg_P=..., update_P=false) at ../../kdeui/kernel/kstartupinfo.cpp:301
#19 0x00007f92a71f81ab in KStartupInfo::Private::got_message (this=0x1fd50b0, msg_P=...) at ../../kdeui/kernel/kstartupinfo.cpp:230
#20 0x00007f92a71f83e2 in KStartupInfo::qt_metacall (this=0x1f3e6c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa6c9adf0) at ./kstartupinfo.moc:92
#21 0x00007f92a3a9d5f8 in QMetaObject::activate (sender=0x1fd50d8, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffa6c9adf0) at kernel/qobject.cpp:3287
#22 0x00007f92a725e532 in KXMessages::gotMessage (this=<value optimized out>, _t1=<value optimized out>) at ./kxmessages.moc:84
#23 0x00007f92a725e80b in KXMessages::x11Event (this=0x1fd50d8, ev_P=0x7fffa6c9b5a0) at ../../kdeui/util/kxmessages.cpp:217
#24 0x00007f92a71d858e in publicx11Event (this=<value optimized out>, _event=0x7fffa6c9b5a0) at ../../kdeui/kernel/kapplication.cpp:918
#25 KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fffa6c9b5a0) at ../../kdeui/kernel/kapplication.cpp:969
#26 0x00007f92a2eb48f5 in qt_x11EventFilter (ev=0x7fffa6c9b5a0) at kernel/qapplication_x11.cpp:440
#27 0x00007f92a2ec60a0 in QApplication::x11ProcessEvent (this=0x7fffa6c9b7e0, event=0x7fffa6c9b5a0) at kernel/qapplication_x11.cpp:3392
#28 0x00007f92a2ef0224 in QEventDispatcherX11::processEvents (this=0x117a340, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#29 0x00007f92a3a87882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007f92a3a87abc in QEventLoop::exec (this=0x7fffa6c9b720, flags=...) at kernel/qeventloop.cpp:201
#31 0x00007f92a3a8becb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#32 0x00007f92a79e11ec in kdemain (argc=<value optimized out>, argv=0x7fffa6c9be78) at ../../kwin/main.cpp:542
#33 0x00007f92a7612eff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=3, ubp_av=0x7fffa6c9be78, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffa6c9be68) at libc-start.c:226
#34 0x0000000000400669 in _start ()

Possible duplicates by query: bug 281904, bug 280606, bug 271892, bug 271890, bug 271889.

Reported using DrKonqi

Comment 1 Thomas Lübking 2011-09-12 22:59:44 UTC

Do you happen to have used BleachBit?

Comment 2 Luca Magistrelli 2011-09-13 07:21:14 UTC

Yes...I've used bleachbit before this crash....is this the problem? BleachBit doesn't support KDE?

Comment 3 Thomas Lübking 2011-09-13 10:49:59 UTC

Yes, versions before 0.8.7 used to shredder the files that serve as KDE's shared memory backends, what's as good or worse as invalidating the processes memory (in contrast to simple deleting, what's just fine)

See comments at the dupe and upgrade BB or add the files to the whitelist.

In general i'd be rather extra careful with software doing automated deletions and worse: overwrites of "superfluous" files...

*** This bug has been marked as a duplicate of bug 271889 ***