Bug 108312

Created attachment 11622 [details]
Screenshot showing behaviour leading to described malfuction

20 Votes for a ferret-proof KMail.

Yeah, 20 bucks from me too dood :) Ferret bugs kinda kick arse :)

- oGALAXYo

*** This bug has been confirmed by popular vote. ***

Similar trace in Debian sid with kmail from 3.5.1-1 when closing. I didn't see the ferret. Probably stole the pointer when I was away!?


Using host libthread_db library "/lib/tls/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1249555936 (LWP 4779)]
[New Thread -1279083600 (LWP 4783)]
[New Thread -1270694992 (LWP 4782)]
[New Thread -1262306384 (LWP 4781)]
[New Thread -1253917776 (LWP 4780)]
[KCrash handler]
#5  KMMessage::asDwString (this=0x0)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmmessage.cpp:284
#6  0xb7b54178 in KMMessage::asString (this=0x0)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmmessage.cpp:305
#7  0xb7bf42ff in KMComposeWin::autoSaveMessage (this=0x8787598)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/kmcomposewin.cpp:708
#8  0xb7c12ded in KMComposeWin::qt_invoke (this=0x8787598, _id=143, 
    _o=0xbfb172ec) at kmcomposewin.moc:461
#9  0xb70627ff in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#10 0xb7063290 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#11 0xb73f2526 in QTimer::timeout () from /usr/lib/libqt-mt.so.3
#12 0xb7087741 in QTimer::event () from /usr/lib/libqt-mt.so.3
#13 0xb6ff9122 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#14 0xb6ff9314 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#15 0xb76fcfde in KApplication::notify (this=0xbfb178d8, receiver=0x87a5130, 
    event=0xbfb17638) at kapplication.cpp:550
#16 0xb6f8a861 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#17 0xb6feabad in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#18 0xb6f9e566 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#19 0xb7011b01 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#20 0xb7011a26 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#21 0xb6ff7c35 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#22 0x0804a098 in main (argc=0, argv=0x0)
    at /tmp/buildd/kdepim-3.5.1/build-tree/kdepim-3.5.1/kmail/main.cpp:110
#23 0xb77c1eb0 in __libc_start_main () from /lib/tls/libc.so.6
#24 0x08049e11 in _start () at ../sysdeps/i386/elf/start.S:119

*** Bug 119632 has been marked as a duplicate of this bug. ***

*** Bug 125464 has been marked as a duplicate of this bug. ***

*** Bug 105119 has been marked as a duplicate of this bug. ***

*** Bug 143003 has been marked as a duplicate of this bug. ***

My yearly update, now it was here again. Debian experimental with kmail 3.5.6.dfsg.1-1 when closing.

Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1249273632 (LWP 3632)]
[New Thread -1281483856 (LWP 3636)]
[New Thread -1273091152 (LWP 3635)]
[New Thread -1264698448 (LWP 3634)]
[New Thread -1256305744 (LWP 3633)]
[KCrash handler]
#9  0xb7dfc138 in KMComposeWin::autoSaveMessage (this=0x9084c68)
    at /tmp/buildd/kdepim-3.5.6.dfsg.1/./kmail/kmcomposewin.cpp:693
#10 0xb7ecbdaa in KMComposeWin::qt_invoke (this=0x9084c68, _id=146, 
    _o=0xbfd44fec) at ./kmcomposewin.moc:473
#11 0xb70e5d4f in QObject::activate_signal (this=0x867e390, clist=0x8810658, 
    o=0xbfd44fec) at kernel/qobject.cpp:2356
#12 0xb70e67e0 in QObject::activate_signal (this=0x867e390, signal=2)
    at kernel/qobject.cpp:2325
#13 0xb7470e5e in QTimer::timeout (this=0x867e390)
    at .moc/debug-shared-mt/moc_qtimer.cpp:82
#14 0xb710d603 in QTimer::event (this=0x867e390, e=0xbfd45338)
    at kernel/qtimer.cpp:219
#15 0xb707dc26 in QApplication::internalNotify (this=0xbfd455c0, 
    receiver=0x867e390, e=0xbfd45338) at kernel/qapplication.cpp:2635
#16 0xb707fa43 in QApplication::notify (this=0xbfd455c0, receiver=0x867e390, 
    e=0xbfd45338) at kernel/qapplication.cpp:2358
#17 0xb7785c3e in KApplication::notify (this=0xbfd455c0, receiver=0x867e390, 
    event=0xbfd45338)
    at /tmp/buildd/kdelibs-3.5.6.r1.dfsg.1/./kdecore/kapplication.cpp:550
#18 0xb7011421 in QApplication::sendEvent (receiver=0x867e390, 
    event=0xbfd45338) at ../include/qapplication.h:520
#19 0xb7070623 in QEventLoop::activateTimers (this=0x8098b50)
    at kernel/qeventloop_unix.cpp:556
#20 0xb702576f in QEventLoop::processEvents (this=0x8098b50, flags=4)
    at kernel/qeventloop_x11.cpp:389
#21 0xb7098179 in QEventLoop::enterLoop (this=0x8098b50)
    at kernel/qeventloop.cpp:198
#22 0xb7097f9a in QEventLoop::exec (this=0x8098b50)
    at kernel/qeventloop.cpp:145
#23 0xb707f7bf in QApplication::exec (this=0xbfd455c0)
    at kernel/qapplication.cpp:2758
#24 0x0804a094 in main (argc=1, argv=0x0)
    at /tmp/buildd/kdepim-3.5.6.dfsg.1/./kmail/main.cpp:110
#25 0xb783cea8 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#26 0x08049e11 in _start () at ../sysdeps/i386/elf/start.S:119

These crashes are are all related to autoSaveMessage, but do not seem exactly the same: bug 143776, bug 136365, bug 108312.

*** Bug 148700 has been marked as a duplicate of this bug. ***

SVN commit 699554 by bvirlet:

Fixes event loop bug. Credit goes to Dirk.


BUG: 108312
BUG: 148700
BUG: 143003
BUG: 136365
BUG: 90467

Most probably closed:
BUG: 143776
BUG: 147016
BUG: 137279
BUG: 136413

https://bugzilla.novell.com/show_bug.cgi?id=226462


 M  +10 -17    kmcomposewin.cpp  
 M  +1 -1      kmcomposewin.h  


--- branches/KDE/3.5/kdepim/kmail/kmcomposewin.cpp #699553:699554
@@ -709,16 +709,22 @@
 
   if ( mAutoSaveTimer )
     mAutoSaveTimer->stop();
+
   connect( this, SIGNAL( applyChangesDone( bool ) ),
-           this, SLOT( slotContinueAutoSave( bool ) ) );
+           this, SLOT( slotContinueAutoSave() ) );
   // This method is called when KMail crashed, so don't try signing/encryption
   // and don't disable controls because it is also called from a timer and
   // then the disabling is distracting.
   applyChanges( true, true );
 
   // Don't continue before the applyChanges is done!
-  qApp->enter_loop();
+}
 
+void KMComposeWin::slotContinueAutoSave()
+{
+  disconnect( this, SIGNAL( applyChangesDone( bool ) ),
+              this, SLOT( slotContinueAutoSave( bool ) ) );
+
   // Ok, it's done now - continue dead letter saving
   if ( mComposedMessages.isEmpty() ) {
     kdDebug(5006) << "Composing the message failed." << endl;
@@ -761,16 +767,9 @@
   }
 
   if ( autoSaveInterval() > 0 )
-    mAutoSaveTimer->start( autoSaveInterval() );
+    updateAutoSave();
 }
 
-void KMComposeWin::slotContinueAutoSave( bool )
-{
-  disconnect( this, SIGNAL( applyChangesDone( bool ) ),
-              this, SLOT( slotContinueAutoSave( bool ) ) );
-  qApp->exit_loop();
-}
-
 //-----------------------------------------------------------------------------
 void KMComposeWin::slotView(void)
 {
@@ -2193,18 +2192,12 @@
 {
   kdDebug(5006) << "entering KMComposeWin::applyChanges" << endl;
 
-  if(!mMsg) {
+  if(!mMsg || mComposer) {
     kdDebug(5006) << "KMComposeWin::applyChanges() : mMsg == 0!\n" << endl;
     emit applyChangesDone( false );
     return;
   }
 
-  if( mComposer ) {
-    kdDebug(5006) << "KMComposeWin::applyChanges() : applyChanges called twice"
-                  << endl;
-    return;
-  }
-
   // Make new job and execute it
   mComposer = new MessageComposer( this );
   connect( mComposer, SIGNAL( done( bool ) ),
--- branches/KDE/3.5/kdepim/kmail/kmcomposewin.h #699553:699554
@@ -780,7 +780,7 @@
 
   void slotContinueDoSend( bool );
   void slotContinuePrint( bool );
-  void slotContinueAutoSave( bool );
+  void slotContinueAutoSave();
 
   void slotEncryptChiasmusToggled( bool );
 

Just in case this is the last words from valgrind when this crash happenned:

==00:04:36:17.433 20992== 
==00:04:36:17.433 20992== Conditional jump or move depends on uninitialised value(s)
==00:04:36:17.433 20992==    at 0x4025517: strlen (mc_replace_strmem.c:246)
==00:04:36:17.449 20992==    by 0x4D8B130: qstrlen(char const*) (qcstring.h:58)
==00:04:36:17.457 20992==    by 0x4D8B16A: QCString::length() const (qcstring.h:261)
==00:04:36:17.481 20992==    by 0x51A5DC0: QTextCodec::toUnicode(QCString const&, int) const (qtextcodec.cpp:1092)
==00:04:36:17.500 20992==    by 0x7279EF4: QXIMInputContext::x11FilterEvent(QWidget*, _XEvent*) (qximinputcontext_x11.cpp:684)
==00:04:36:17.515 20992==    by 0x714353D: QMultiInputContext::x11FilterEvent(QWidget*, _XEvent*) (qmultiinputcontext.cpp:96)
==00:04:36:17.516 20992==    by 0x4D850A7: QApplication::x11ProcessEvent(_XEvent*) (qapplication_x11.cpp:3308)
==00:04:36:17.516 20992==    by 0x4D9C67B: QEventLoop::processEvents(unsigned) (qeventloop_x11.cpp:192)
==00:04:36:17.516 20992==    by 0x4E126E3: QEventLoop::enterLoop() (qeventloop.cpp:198)
==00:04:36:17.520 20992==    by 0x4E123E1: QEventLoop::exec() (qeventloop.cpp:145)
==00:04:36:17.520 20992==    by 0x4DF8F12: QApplication::exec() (qapplication.cpp:2758)
==00:04:36:17.520 20992==    by 0x8059988: main (main.cpp:163)
==00:04:37:33.322 20992== 
==00:04:37:33.322 20992== Invalid read of size 1
==00:04:37:33.381 20992==    at 0x8D3EB5A: KMMessage::asDwString() const (kmmessage.cpp:285)
==00:04:37:33.395 20992==    by 0x8E01366: KMComposeWin::autoSaveMessage() (kmcomposewin.cpp:739)
==00:04:37:33.403 20992==    by 0x8E07B07: KMComposeWin::qt_invoke(int, QUObject*) (kmcomposewin.moc:508)
==00:04:37:33.403 20992==    by 0x4E62B0F: QObject::activate_signal(QConnectionList*, QUObject*) (qobject.cpp:2356)
==00:04:37:33.403 20992==    by 0x4E635F4: QObject::activate_signal(int) (qobject.cpp:2325)
==00:04:37:33.420 20992==    by 0x51F4B93: QTimer::timeout() (moc_qtimer.cpp:82)
==00:04:37:33.420 20992==    by 0x4E8A281: QTimer::event(QEvent*) (qtimer.cpp:219)
==00:04:37:33.421 20992==    by 0x4DF7369: QApplication::internalNotify(QObject*, QEvent*) (qapplication.cpp:2635)
==00:04:37:33.421 20992==    by 0x4DF9192: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:2358)
==00:04:37:33.421 20992==    by 0x4A6FFF1: KApplication::notify(QObject*, QEvent*) (kapplication.cpp:550)
==00:04:37:33.421 20992==    by 0x4D886C8: QApplication::sendEvent(QObject*, QEvent*) (qapplication.h:520)
==00:04:37:33.445 20992==    by 0x4DEA1B0: QEventLoop::activateTimers() (qeventloop_unix.cpp:556)
==00:04:37:33.445 20992==  Address 0x30 is not stack'd, malloc'd or (recently) free'd
==00:04:41:28.538 20992== 
==00:04:41:28.538 20992== FILE DESCRIPTORS: 4 open at exit.
==00:04:41:28.538 20992== Open AF_UNIX socket 3: <unknown>
==00:04:41:28.632 20992==    at 0x483D682: socket (in /usr/lib/debug/libc-2.6.1.so)
==00:04:41:28.669 20992==    by 0x499BB16: KCrash::defaultCrashHandler(int) (kcrash.cpp:229)
==00:04:41:28.682 20992==    by 0x4793867: (within /usr/lib/debug/libc-2.6.1.so)
==00:04:41:28.727 20992==    by 0x8E01366: KMComposeWin::autoSaveMessage() (kmcomposewin.cpp:739)
==00:04:41:28.733 20992==    by 0x8E07B07: KMComposeWin::qt_invoke(int, QUObject*) (kmcomposewin.moc:508)
==00:04:41:28.790 20992==    by 0x4E62B0F: QObject::activate_signal(QConnectionList*, QUObject*) (qobject.cpp:2356)
==00:04:41:28.791 20992==    by 0x4E635F4: QObject::activate_signal(int) (qobject.cpp:2325)
==00:04:41:28.791 20992==    by 0x51F4B93: QTimer::timeout() (moc_qtimer.cpp:82)
==00:04:41:28.808 20992==    by 0x4E8A281: QTimer::event(QEvent*) (qtimer.cpp:219)
==00:04:41:28.821 20992==    by 0x4DF7369: QApplication::internalNotify(QObject*, QEvent*) (qapplication.cpp:2635)
==00:04:41:28.821 20992==    by 0x4DF9192: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:2358)
==00:04:41:28.833 20992==    by 0x4A6FFF1: KApplication::notify(QObject*, QEvent*) (kapplication.cpp:550)
==00:04:41:28.834 20992== 

*** Bug 152430 has been marked as a duplicate of this bug. ***