Application: plasma-desktop (0.4)
KDE Platform Version: 4.10.1
Qt Version: 4.8.4
Operating System: Linux 3.8.6-203.fc18.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
I noticed that plasma-desktop was using 100% CPU ; that happens on a daily basis since a recent update. What I was used to do was the following: log out, log in, plasma-destop now uses a normal CPU % ; repeat when 100% CPU again.

I did that procedure today twice, and twice Plasma crashed.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Aborted
Using host libthread_db library "/usr/lib64/libthread_db.so.1".
81	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7fd9bfccc880 (LWP 3804))]

Thread 5 (Thread 0x7fd9afd3a700 (LWP 3806)):
#0  0x0000003dde2bb44d in nanosleep () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003dde2bb2f1 in __sleep (seconds=0) at ../sysdeps/unix/sysv/linux/sleep.c:137
#2  0x0000003e06986872 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x3e06c94660 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2363
#3  0x0000003e069868f9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#4  0x0000003ddee07d15 in start_thread (arg=0x7fd9afd3a700) at pthread_create.c:308
#5  0x0000003dde2f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 4 (Thread 0x7fd924a58700 (LWP 3807)):
#0  0x0000003de1a84b4a in g_mutex_get_impl (mutex=<optimized out>) at gthread-posix.c:132
#1  0x0000003de1a84d99 in g_mutex_lock (mutex=mutex@entry=0x7fd9200009a0) at gthread-posix.c:210
#2  0x0000003de1a47837 in g_main_context_check (context=context@entry=0x7fd9200009a0, max_priority=2147483647, fds=fds@entry=0x7fd920002bb0, n_fds=n_fds@entry=1) at gmain.c:3171
#3  0x0000003de1a47cc2 in g_main_context_iterate (context=context@entry=0x7fd9200009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3287
#4  0x0000003de1a47e44 in g_main_context_iteration (context=0x7fd9200009a0, may_block=1) at gmain.c:3351
#5  0x0000003dea7a6126 in QEventDispatcherGlib::processEvents (this=0x7fd9200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x0000003dea77680f in QEventLoop::processEvents (this=this@entry=0x7fd924a57cd0, flags=...) at kernel/qeventloop.cpp:149
#7  0x0000003dea776a98 in QEventLoop::exec (this=0x7fd924a57cd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x0000003dea678980 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x0000003dea75703f in QInotifyFileSystemWatcherEngine::run (this=0x2adb4a0) at io/qfilesystemwatcher_inotify.cpp:256
#10 0x0000003dea67b95c in QThreadPrivate::start (arg=0x2adb4a0) at thread/qthread_unix.cpp:338
#11 0x0000003ddee07d15 in start_thread (arg=0x7fd924a58700) at pthread_create.c:308
#12 0x0000003dde2f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 3 (Thread 0x7fd91cd0e700 (LWP 3810)):
#0  __pthread_mutex_unlock_usercnt (mutex=0x7fd910000a60, decr=decr@entry=1) at pthread_mutex_unlock.c:52
#1  0x0000003ddee0ab2a in __GI___pthread_mutex_unlock (mutex=<optimized out>) at pthread_mutex_unlock.c:297
#2  0x0000003de1a84dd1 in g_mutex_unlock (mutex=mutex@entry=0x7fd9100009a0) at gthread-posix.c:229
#3  0x0000003de1a475ab in g_main_context_prepare (context=context@entry=0x7fd9100009a0, priority=priority@entry=0x7fd91cd0dba8) at gmain.c:2984
#4  0x0000003de1a47c4b in g_main_context_iterate (context=context@entry=0x7fd9100009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3270
#5  0x0000003de1a47e44 in g_main_context_iteration (context=0x7fd9100009a0, may_block=1) at gmain.c:3351
#6  0x0000003dea7a6126 in QEventDispatcherGlib::processEvents (this=0x7fd9100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x0000003dea77680f in QEventLoop::processEvents (this=this@entry=0x7fd91cd0dd00, flags=...) at kernel/qeventloop.cpp:149
#8  0x0000003dea776a98 in QEventLoop::exec (this=0x7fd91cd0dd00, flags=...) at kernel/qeventloop.cpp:204
#9  0x0000003dea678980 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#10 0x0000003dea67b95c in QThreadPrivate::start (arg=0x1c9ff40) at thread/qthread_unix.cpp:338
#11 0x0000003ddee07d15 in start_thread (arg=0x7fd91cd0e700) at pthread_create.c:308
#12 0x0000003dde2f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 2 (Thread 0x7fd914b6d700 (LWP 3815)):
#0  0x0000003dde2e99ad in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003de1a47d24 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fd90c0040e0, timeout=2987357, context=0x7fd90c0009a0) at gmain.c:3584
#2  g_main_context_iterate (context=context@entry=0x7fd90c0009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3285
#3  0x0000003de1a47e44 in g_main_context_iteration (context=0x7fd90c0009a0, may_block=1) at gmain.c:3351
#4  0x0000003dea7a6126 in QEventDispatcherGlib::processEvents (this=0x7fd90c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x0000003dea77680f in QEventLoop::processEvents (this=this@entry=0x7fd914b6ccc0, flags=...) at kernel/qeventloop.cpp:149
#6  0x0000003dea776a98 in QEventLoop::exec (this=0x7fd914b6ccc0, flags=...) at kernel/qeventloop.cpp:204
#7  0x0000003dea678980 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#8  0x00007fd915f412d5 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#9  0x0000003dea67b95c in QThreadPrivate::start (arg=0x4497ca0) at thread/qthread_unix.cpp:338
#10 0x0000003ddee07d15 in start_thread (arg=0x7fd914b6d700) at pthread_create.c:308
#11 0x0000003dde2f248d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 1 (Thread 0x7fd9bfccc880 (LWP 3804)):
[KCrash Handler]
#6  0x0000003dde235ba5 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:63
#7  0x0000003dde237358 in __GI_abort () at abort.c:90
#8  0x0000003dde27559b in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x3dde379ba8 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:197
#9  0x0000003dde27ca8e in malloc_printerr (ptr=0x68c82b0, str=0x3dde379c00 "double free or corruption (fasttop)", action=3) at malloc.c:4969
#10 _int_free (av=0x3dde5b1740 <main_arena>, p=0x68c82a0, have_lock=0) at malloc.c:3826
#11 0x0000003dea7a63d4 in qDeleteAll<QList<QTimerInfo*>::const_iterator> (end=..., begin=...) at ../../src/corelib/tools/qalgorithms.h:322
#12 qDeleteAll<QTimerInfoList> (c=...) at ../../src/corelib/tools/qalgorithms.h:330
#13 QEventDispatcherGlib::~QEventDispatcherGlib (this=0x151d2e0, __in_chrg=<optimized out>) at kernel/qeventdispatcher_glib.cpp:372
#14 0x0000003def46a6f9 in QGuiEventDispatcherGlib::~QGuiEventDispatcherGlib (this=0x151d2e0, __in_chrg=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:200
#15 0x0000003dea78a112 in QObjectPrivate::deleteChildren (this=this@entry=0x159b750) at kernel/qobject.cpp:1907
#16 0x0000003dea78df56 in QObject::~QObject (this=0x1595830, __in_chrg=<optimized out>) at kernel/qobject.cpp:926
#17 0x0000003def3d38a1 in QApplication::~QApplication (this=0x1595830, __in_chrg=<optimized out>) at kernel/qapplication.cpp:1098
#18 0x00000036078510e9 in PlasmaApp::~PlasmaApp (this=0x1595830, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.10.1/plasma/desktop/shell/plasmaapp.cpp:291
#19 0x000000360783d8e1 in kdemain (argc=1, argv=0x7fffdbd0b678) at /usr/src/debug/kde-workspace-4.10.1/plasma/desktop/shell/main.cpp:127
#20 0x0000003dde221a05 in __libc_start_main (main=0x400940 <main(int, char**)>, argc=1, ubp_av=0x7fffdbd0b678, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffdbd0b668) at libc-start.c:225
#21 0x0000000000400971 in _start ()

Possible duplicates by query: bug 315982, bug 314055, bug 311589, bug 309216, bug 307597.

Reported using DrKonqi