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List:       kmail-devel
Subject:    [Bug 58271] crash whenever adding a new filter and incorrect filter
From:       "Christophe Prud'Homme" <prudhomm () mit ! edu>
Date:       2003-05-09 10:52:40
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http://bugs.kde.org/show_bug.cgi?id=58271     




------- Additional Comments From prudhomm@mit.edu  2003-05-09 12:52 -------
new backtrace with "some" debugging symbols (I recompiled kmfilter* with -g 
after gdb backtrace I put the valgrind output 
 
[New Thread 16384 (LWP 24665)] 
0x4177baf9 in wait4 () from /lib/libc.so.6 
#0  0x4177baf9 in wait4 () from /lib/libc.so.6 
#1  0x417eef60 in sys_sigabbrev () from /lib/libc.so.6 
#2  0x415c3061 in waitpid () from /lib/libpthread.so.0 
#3  0x40d98c98 in KCrash::defaultCrashHandler(int) () 
   from /opt/kde3/lib/libkdecore.so.4 
#4  0x417089c8 in sigaction () from /lib/libc.so.6 
#5  0x41320810 in QGList::clear() () from /opt/qt3/lib/libqt-mt.so.3 
#6  0x0816e868 in QPtrList<KMSearchRule>::clear() (this=0x8948d90) 
    at /opt/qt3/include/qptrlist.h:78 
#7  0x0816e7ba in ~QPtrList (this=0x8948d90) at /opt/qt3/include/qptrlist.h:55 
#8  0x0816e64a in ~KMSearchPattern (this=0x8948d90) at kmsearchpattern.h:171 
#9  0x0816e0bc in ~KMFilter (this=0x8948d90) at kmfilter.h:55 
#10 0x0816e547 in QPtrList<KMFilter>::deleteItem(void*) (this=0x88ba9a4,  
    d=0x8948d90) at /opt/qt3/include/qptrlist.h:119 
#11 0x413207e7 in QGList::clear() () from /opt/qt3/lib/libqt-mt.so.3 
#12 0x0816da4e in QPtrList<KMFilter>::clear() (this=0x88ba9a4) 
    at /opt/qt3/include/qptrlist.h:78 
#13 0x0816e438 in ~QPtrList (this=0x88ba9a4) at /opt/qt3/include/qptrlist.h:55 
#14 0x08188a28 in ~KMFilterListBox (this=0x88ba8d8) at kmfilterdlg.moc:84 
#15 0x41123214 in QWidget::~QWidget() () from /opt/qt3/lib/libqt-mt.so.3 
#16 0x41122d6c in QWidget::~QWidget() () from /opt/qt3/lib/libqt-mt.so.3 
#17 0x4123a40b in QDialog::~QDialog() () from /opt/qt3/lib/libqt-mt.so.3 
#18 0x40bace11 in KDialogBase::~KDialogBase() () 
   from /opt/kde3/lib/libkdeui.so.4 
#19 0x08188e36 in ~KMFilterDlg (this=0x88eeff8) at kmfilterdlg.moc:223 
#20 0x40bad412 in KDialogBase::slotDelayedDestruct() () 
   from /opt/kde3/lib/libkdeui.so.4 
#21 0x40bb1914 in KDialogBase::qt_invoke(int, QUObject*) () 
   from /opt/kde3/lib/libkdeui.so.4 
#22 0x08186af1 in KMFilterDlg::qt_invoke(int, QUObject*) (this=0x88eeff8,  
    _id=82, _o=0xbffff490) at kmfilterdlg.moc:534 
#23 0x410fa056 in QObject::activate_signal(QConnectionList*, QUObject*) () 
   from /opt/qt3/lib/libqt-mt.so.3 
#24 0x41386276 in QSignal::signal(QVariant const&) () 
   from /opt/qt3/lib/libqt-mt.so.3 
#25 0x411102f1 in QSignal::activate() () from /opt/qt3/lib/libqt-mt.so.3 
#26 0x41116437 in QSingleShotTimer::event(QEvent*) () 
   from /opt/qt3/lib/libqt-mt.so.3 
#27 0x410a5965 in QApplication::internalNotify(QObject*, QEvent*) () 
   from /opt/qt3/lib/libqt-mt.so.3 
#28 0x410a4fa0 in QApplication::notify(QObject*, QEvent*) () 
   from /opt/qt3/lib/libqt-mt.so.3 
#29 0x40d08823 in KApplication::notify(QObject*, QEvent*) () 
   from /opt/kde3/lib/libkdecore.so.4 
#30 0x410835e0 in QEventLoop::activateTimers() () 
   from /opt/qt3/lib/libqt-mt.so.3 
#31 0x410650ff in QEventLoop::processEvents(unsigned) () 
   from /opt/qt3/lib/libqt-mt.so.3 
#32 0x410b72fb in QEventLoop::enterLoop() () from /opt/qt3/lib/libqt-mt.so.3 
#33 0x410b71c0 in QEventLoop::exec() () from /opt/qt3/lib/libqt-mt.so.3 
#34 0x410a5b5c in QApplication::exec() () from /opt/qt3/lib/libqt-mt.so.3 
#35 0x0809469f in main () 
#36 0x416f7a51 in __libc_start_main () from /lib/libc.so.6 
 
 
and here is what valgrind says when it crashes 
 
 
==24692== 
==24692== Invalid write of size 1 
==24692==    at 0x4080F8E8: DwBoyerMoore::_Assign(char const*, unsigned) (in 
/home/kde3/lib/libmimelib.so.1.0.1) 
==24692==    by 0x4080F66B: DwBoyerMoore::DwBoyerMoore(char const*) (in 
/home/kde3/lib/libmimelib.so.1.0.1) 
==24692==    by 0x8178F90: KMSearchRule::init(QCString const&) (in /home/kde3/bin/kmail) 
==24692==    by 0x8178B2C: KMSearchRule::KMSearchRule(QCString const&, 
KMSearchRule::Function, QString const&) (in /home/kde3/bin/kmail) 
==24692==    Address 0x4A5A40D4 is not stack'd, malloc'd or free'd 
==24692== 
==24692== Invalid free() / delete / delete[] 
==24692==    at 0x4015D1D3: __builtin_vec_delete (vg_clientfuncs.c:219) 
==24692==    by 0x4015D1F1: operator delete[](void*) (vg_clientfuncs.c:228) 
==24692==    by 0x4080F7D8: DwBoyerMoore::~DwBoyerMoore() (in 
/home/kde3/lib/libmimelib.so.1.0.1) 
==24692==    by 0x8178ED0: KMSearchRule::~KMSearchRule() (in /home/kde3/bin/kmail) 
==24692==    Address 0x46E0CF30 is 0 bytes inside a block of size 7 free'd 
==24692==    at 0x4015D1D3: __builtin_vec_delete (vg_clientfuncs.c:219) 
==24692==    by 0x4015D1F1: operator delete[](void*) (vg_clientfuncs.c:228) 
==24692==    by 0x4080F7D8: DwBoyerMoore::~DwBoyerMoore() (in 
/home/kde3/lib/libmimelib.so.1.0.1) 
==24692==    by 0x8178ED0: KMSearchRule::~KMSearchRule() (in /home/kde3/bin/kmail) 
kmail: KMSearchPattern::purify(): removing "" <contains> "" 
kmail: apply on inbound == true 
kmail: apply on outbound == false 
kmail: apply on explicit == true 
kmail: apply on inbound == true 
kmail: apply on outbound == false 
kmail: apply on explicit == true
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