Application: kmail (4.14.2)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.13.0-37-generic x86_64
Distribution: Linux Mint 17.1 Rebecca

-- Information about the crash:
I dont know for fixing this problem

The crash can be reproduced every time.

-- Backtrace:
Application: KMail (kmail), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f950315a800 (LWP 8442))]

Thread 2 (Thread 0x7f94d9fcc700 (LWP 8447)):
#0  0x00007f95004abfdd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f94f8510fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f94f85110ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9500e487be in QEventDispatcherGlib::processEvents (this=0x7f94d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007f9500e1a0af in QEventLoop::processEvents (this=this@entry=0x7f94d9fcbda0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f9500e1a3a5 in QEventLoop::exec (this=this@entry=0x7f94d9fcbda0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f9500d16c5f in QThread::exec (this=this@entry=0x1813af0) at thread/qthread.cpp:537
#7  0x00007f9500dfb823 in QInotifyFileSystemWatcherEngine::run (this=0x1813af0) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007f9500d1932f in QThreadPrivate::start (arg=0x1813af0) at thread/qthread_unix.cpp:349
#9  0x00007f94fdd7b184 in start_thread (arg=0x7f94d9fcc700) at pthread_create.c:312
#10 0x00007f95004b937d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f950315a800 (LWP 8442)):
[KCrash Handler]
#6  0x00007f95003f5c37 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#7  0x00007f95003f9028 in __GI_abort () at abort.c:89
#8  0x00007f95004322a4 in __libc_message (do_abort=do_abort@entry=1, fmt=fmt@entry=0x7f95005406b0 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
#9  0x00007f950043e55e in malloc_printerr (ptr=<optimized out>, str=0x7f9500540850 "free(): invalid next size (fast)", action=1) at malloc.c:4996
#10 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3840
#11 0x00007f950159f48d in free (alignment=8, x=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qvector.h:99
#12 free (this=<optimized out>, x=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qvector.h:468
#13 operator= (v=..., this=0x1b380c0) at ../../include/QtCore/../../src/corelib/tools/qvector.h:395
#14 clear (this=0x1b380c0) at ../../include/QtCore/../../src/corelib/tools/qvector.h:348
#15 QTextEngine::clearLineData (this=0x1b380c0) at text/qtextengine.cpp:1483
#16 0x00007f95015a1268 in QTextLayout::clearLayout (this=<optimized out>) at text/qtextlayout.cpp:659
#17 0x00007f95015b2e6c in QTextBlock::clearLayout (this=this@entry=0x7fffe100d9f0) at text/qtextobject.cpp:1084
#18 0x00007f95015ea0e3 in QTextDocumentLayout::documentChanged (this=0x15451d0, from=0, oldLength=0, length=2846) at text/qtextdocumentlayout.cpp:2882
#19 0x00007f95017a4663 in QTextEditPrivate::relayoutDocument (this=this@entry=0x17feb90) at widgets/qtextedit.cpp:1438
#20 0x00007f95017a4e60 in QTextEdit::resizeEvent (this=<optimized out>, e=0x7fffe100deb0) at widgets/qtextedit.cpp:1397
#21 0x00007f950139c2ce in QWidget::event (this=this@entry=0x1838ae0, event=event@entry=0x7fffe100deb0) at kernel/qwidget.cpp:8541
#22 0x00007f950173e04e in QFrame::event (this=0x1838ae0, e=0x7fffe100deb0) at widgets/qframe.cpp:557
#23 0x00007f9500e1b646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x12a9be0, receiver=receiver@entry=0x184f100, event=event@entry=0x7fffe100deb0) at kernel/qcoreapplication.cpp:1063
#24 0x00007f950134ce0c in QApplicationPrivate::notify_helper (this=this@entry=0x12a9be0, receiver=receiver@entry=0x184f100, e=e@entry=0x7fffe100deb0) at kernel/qapplication.cpp:4563
#25 0x00007f95013534a0 in QApplication::notify (this=this@entry=0x7fffe100ed20, receiver=receiver@entry=0x184f100, e=e@entry=0x7fffe100deb0) at kernel/qapplication.cpp:4353
#26 0x00007f9502b93cca in KApplication::notify (this=0x7fffe100ed20, receiver=0x184f100, event=0x7fffe100deb0) at ../../kdeui/kernel/kapplication.cpp:311
#27 0x00007f9500e1b4dd in QCoreApplication::notifyInternal (this=0x7fffe100ed20, receiver=receiver@entry=0x184f100, event=event@entry=0x7fffe100deb0) at kernel/qcoreapplication.cpp:953
#28 0x00007f9501398301 in sendEvent (event=0x7fffe100deb0, receiver=0x184f100) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#29 QWidgetPrivate::sendPendingMoveAndResizeEvents (this=this@entry=0x1863190, recursive=recursive@entry=false, disableUpdates=<optimized out>, disableUpdates@entry=false) at kernel/qwidget.cpp:7446
#30 0x00007f9501399903 in QWidgetPrivate::show_helper (this=this@entry=0x1863190) at kernel/qwidget.cpp:7497
#31 0x00007f950139b6c4 in QWidget::setVisible (this=0x184f100, visible=<optimized out>) at kernel/qwidget.cpp:7778
#32 0x00007f950139989e in show (this=0x184f100) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#33 QWidgetPrivate::showChildren (this=this@entry=0x17feb90, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7866
#34 0x00007f950139991f in QWidgetPrivate::show_helper (this=this@entry=0x17feb90) at kernel/qwidget.cpp:7503
#35 0x00007f950139b6c4 in QWidget::setVisible (this=0x1838ae0, visible=<optimized out>) at kernel/qwidget.cpp:7778
#36 0x00007f950139989e in show (this=0x1838ae0) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#37 QWidgetPrivate::showChildren (this=this@entry=0x180e240, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7866
#38 0x00007f950139991f in QWidgetPrivate::show_helper (this=this@entry=0x180e240) at kernel/qwidget.cpp:7503
#39 0x00007f950139b6c4 in QWidget::setVisible (this=0x1854150, visible=<optimized out>) at kernel/qwidget.cpp:7778
#40 0x00007f950139989e in show (this=0x1854150) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#41 QWidgetPrivate::showChildren (this=this@entry=0x183ccf0, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7866
#42 0x00007f950139991f in QWidgetPrivate::show_helper (this=this@entry=0x183ccf0) at kernel/qwidget.cpp:7503
#43 0x00007f950139b6c4 in QWidget::setVisible (this=0x1712e70, visible=<optimized out>) at kernel/qwidget.cpp:7778
#44 0x00007f950139989e in show (this=0x1712e70) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#45 QWidgetPrivate::showChildren (this=this@entry=0x16fab40, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7866
#46 0x00007f950139991f in QWidgetPrivate::show_helper (this=this@entry=0x16fab40) at kernel/qwidget.cpp:7503
#47 0x00007f950139b6c4 in QWidget::setVisible (this=0x1705520, visible=<optimized out>) at kernel/qwidget.cpp:7778
#48 0x00007f950139989e in show (this=0x1705520) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#49 QWidgetPrivate::showChildren (this=this@entry=0x1710a10, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7866
#50 0x00007f950139991f in QWidgetPrivate::show_helper (this=this@entry=0x1710a10) at kernel/qwidget.cpp:7503
#51 0x00007f950139b6c4 in QWidget::setVisible (this=0x1706ec0, visible=<optimized out>) at kernel/qwidget.cpp:7778
#52 0x00007f950139989e in show (this=0x1706ec0) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#53 QWidgetPrivate::showChildren (this=this@entry=0x1710810, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7866
#54 0x00007f950139991f in QWidgetPrivate::show_helper (this=this@entry=0x1710810) at kernel/qwidget.cpp:7503
#55 0x00007f950139b6c4 in QWidget::setVisible (this=0x17134c0, visible=<optimized out>) at kernel/qwidget.cpp:7778
#56 0x00007f950139989e in show (this=0x17134c0) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#57 QWidgetPrivate::showChildren (this=this@entry=0x1627a10, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7866
#58 0x00007f950139991f in QWidgetPrivate::show_helper (this=this@entry=0x1627a10) at kernel/qwidget.cpp:7503
#59 0x00007f950139b6c4 in QWidget::setVisible (this=0x1627690, visible=<optimized out>) at kernel/qwidget.cpp:7778
#60 0x00007f9501eee82e in show (this=0x1627690) at /usr/include/qt4/QtGui/qwidget.h:497
#61 KMKernel::recoverDeadLetters (this=this@entry=0x7fffe100ed50) at ../../kmail/kmkernel.cpp:1154
#62 0x0000000000402ceb in main (argc=<optimized out>, argv=<optimized out>) at ../../kmail/main.cpp:136

Possible duplicates by query: bug 358346, bug 355228.

Reported using DrKonqi