another backtrace

(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 5075)]
0x00002aaaae98f9d2 in nanosleep () from /lib/libc.so.6
#0  0x00002aaaae98f9d2 in nanosleep () from /lib/libc.so.6
#1  0x00002aaaae98f8a2 in sleep () from /lib/libc.so.6
#2  0x00002aaaabafdbca in KCrash::startDrKonqi ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#3  0x00002aaaabb2008e in KCrash::defaultCrashHandler ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#4  0x00002aaaae0de107 in __pthread_sighandler () from /lib/libpthread.so.0
#5  0x00002aaaae933810 in killpg () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

using 1.4 on kde 3.5.2 kdvi has crashed every time it was open at logout. I would like to know if the above backtraces are enough to track this problem or if I should get another one. I currently don't have debug flag enabled, but I can easily do that.

Thank you, for your bugreport.

I thought we already fixed this problem.
It does not crash on my machine, so a full backtrace would really be useful.

Greetings,
Wilfried Huss

kdvi 1.4 using kde 3.5.2 doesn't crash every time any more, but is back to crashing often. This is one of the full backtrace it produces. 

Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 47105727868016 (LWP 5445)]
0x00002ad7a81333f0 in nanosleep () from /lib/libc.so.6
#0  0x00002ad7a81333f0 in nanosleep () from /lib/libc.so.6
#1  0x00002ad7a8133244 in sleep () from /lib/libc.so.6
#2  0x00002ad7a51668db in KCrash::startDrKonqi ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#3  0x00002ad7a5166f10 in KCrash::defaultCrashHandler ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#4  0x00002ad7a80d5640 in killpg () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Today I got a different backtrace, here it is:

Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 47199575620720 (LWP 5410)]
[KCrash handler]
#5  0x00002aed82061ca0 in KViewPart::writeSettings ()
   from /usr/kde/3.5/lib64/kde3/kviewerpart.so
#6  0x00002aed8206223f in KViewPart::~KViewPart ()
   from /usr/kde/3.5/lib64/kde3/kviewerpart.so
#7  0x00002aed7fcc1bc4 in QGList::clear () from /usr/qt/3/lib64/libqt-mt.so.3
#8  0x00002aed7edf07ac in ~KLibrary () from /usr/kde/3.5/lib64/libkdecore.so.4
#9  0x00002aed7edb9ad6 in KLibLoader::close_pending ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#10 0x00002aed7edf022a in ~KLibLoader ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#11 0x00002aed7ed7cb56 in KLibLoader::cleanUp ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#12 0x00002aed7edd544e in ~KApplication ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#13 0x000000000040ca6d in main ()

I still get the crashes almost always at logout. I'm now on kde 3.5.2 and gcc-4.1.0

Still happens on kde 3.5.3. Here is one of the backtraces.

Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 47939547326256 (LWP 5448)]
[KCrash handler]
#5  0x00002b99cbc58e30 in KViewPart::writeSettings ()
   from /usr/kde/3.5/lib64/kde3/kviewerpart.so
#6  0x00002b99cbc593cf in ~KViewPart ()
   from /usr/kde/3.5/lib64/kde3/kviewerpart.so
#7  0x00002b99c98bc6c4 in QGList::clear () from /usr/qt/3/lib64/libqt-mt.so.3
#8  0x00002b99c89d5e57 in ~KLibrary () from /usr/kde/3.5/lib64/libkdecore.so.4
#9  0x00002b99c89d5566 in KLibLoader::close_pending ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#10 0x00002b99c89e8ea5 in ~KLibLoader ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#11 0x00002b99c8980e76 in KLibLoader::cleanUp ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#12 0x00002b99c8a08ff5 in ~KApplication ()
   from /usr/kde/3.5/lib64/libkdecore.so.4
#13 0x000000000040aa6b in main ()
#14 0x00002b99cb8f4134 in __libc_start_main () from /lib/libc.so.6
#15 0x000000000040a849 in _start ()

*** Bug 129099 has been marked as a duplicate of this bug. ***

Still happens with kde 3.5.4

*** Bug 132996 has been marked as a duplicate of this bug. ***

SVN commit 578562 by whuss:

Fix crash on session saving.

BUG: 122961

 M  +26 -28    kviewpart.cpp  


--- branches/KDE/3.5/kdegraphics/kviewshell/kviewpart.cpp #578561:578562
@@ -59,7 +59,7 @@
 KViewPart::KViewPart(QWidget *parentWidget, const char *widgetName, QObject *parent,
                      const char *name, const QStringList& args)
   : KViewPart_Iface(parent, name), showSidebar(0), saveAction(0), partManager(0),
-    multiPage(0), multiPageLibrary(QString::null), aboutDialog(0)
+    multiPageLibrary(QString::null), aboutDialog(0)
 {
   KGlobal::locale()->insertCatalogue("kviewshell");
 
@@ -146,7 +146,7 @@
       reason = i18n("<qt>The factory does not support creating components of the specified type.</qt>");
       break;
     }
-    
+
     QString text = i18n("<qt><p><b>Problem:</b> The document <b>%1</b> cannot be shown.</p>"
 			"<p><b>Reason:</b> The software component <b>%2</b> which is required to "
 			"display your files could not be initialized. This could point to "
@@ -233,7 +233,7 @@
   media->setItems(items);
   connect (media, SIGNAL(activated(int)), this, SLOT(slotMedia(int)));
 
-  useDocumentSpecifiedSize = new KToggleAction(i18n("&Use Document Specified Paper Size"), 0, this, SLOT(slotShowSidebar()), 
+  useDocumentSpecifiedSize = new KToggleAction(i18n("&Use Document Specified Paper Size"), 0, this, SLOT(slotShowSidebar()),
 					       actionCollection(), "view_use_document_specified_size");
 
   // Zoom Actions
@@ -283,9 +283,9 @@
   //connect(selectionModeAction, SIGNAL(toggled(bool)), this, SLOT(slotEnableSelectionTool(bool)));
 
   // history action
-  backAction = new KAction(i18n("&Back"), "1leftarrow", 0, 
+  backAction = new KAction(i18n("&Back"), "1leftarrow", 0,
                    this, SLOT(mp_doGoBack()), actionCollection(), "go_back");
-  forwardAction = new KAction(i18n("&Forward"), "1rightarrow", 0, 
+  forwardAction = new KAction(i18n("&Forward"), "1rightarrow", 0,
                       this, SLOT(mp_doGoForward()), actionCollection(), "go_forward");
 
   backAction->setEnabled(false);
@@ -338,6 +338,8 @@
 
 KViewPart::~KViewPart()
 {
+  writeSettings();
+
   // Without the next two lines, konqueror crashes when it is quit
   // while displaying a DVI file. I don't really understand
   // why... --Stefan.
@@ -348,7 +350,6 @@
   setManager(0);
   delete partManager;
 
-  writeSettings();
   delete multiPage;
   delete tmpUnzipped;
 }
@@ -420,7 +421,7 @@
   if (s.formatNumber() == -1) {
     if (KGlobal::locale()-> measureSystem() == KLocale::Metric)
       size += QString("%1x%2 mm").arg(s.width().getLength_in_mm(), 0, 'f', 0).arg(s.height().getLength_in_mm(), 0, 'f', 0);
-    else 
+    else
       size += QString("%1x%2 in").arg(s.width().getLength_in_inch(), 0, 'g', 2).arg(s.height().getLength_in_inch(), 0, 'g', 2);
   } else {
     size += s.formatName() + "/";
@@ -451,8 +452,8 @@
 void KViewPart::slotFileOpen()
 {
   if ((!multiPage.isNull()) && (multiPage->isModified() == true)) {
-    int ans = KMessageBox::warningContinueCancel( 0, 
-					 i18n("Your document has been modified. Do you really want to open another document?"), 
+    int ans = KMessageBox::warningContinueCancel( 0,
+					 i18n("Your document has been modified. Do you really want to open another document?"),
 					 i18n("Warning - Document Was Modified"),KStdGuiItem::open());
     if (ans == KMessageBox::Cancel)
       return;
@@ -634,7 +635,7 @@
       if (fi.exists())
       {
         m_file = m_file+"."+(*it);
-        break; 
+        break;
       }
     }
 
@@ -665,7 +666,7 @@
       delete tmpUnzipped;
 
     tmpUnzipped = new KTempFile;
-    if (tmpUnzipped == 0L) 
+    if (tmpUnzipped == 0L)
     {
       KMessageBox::error(mainWidget, i18n("<qt><strong>File Error!</strong> Could not create "
                          "temporary file.</qt>"));
@@ -801,7 +802,7 @@
     int error;
     multiPage = static_cast<KMultiPage*>(KParts::ComponentFactory::createInstanceFromService<KParts::ReadOnlyPart>(service, mainWidget,
 														   service->name().utf8(), QStringList(), &error ));
-    
+
     if (multiPage.isNull()) {
       QString reason;
       switch(error) {
@@ -924,13 +925,13 @@
     return false;
 
   if (multiPage->isModified() == true) {
-    int ans = KMessageBox::warningContinueCancel( 0, 
-					 i18n("Your document has been modified. Do you really want to close it?"), 
+    int ans = KMessageBox::warningContinueCancel( 0,
+					 i18n("Your document has been modified. Do you really want to close it?"),
 					 i18n("Document Was Modified"), KStdGuiItem::close());
     if (ans == KMessageBox::Cancel)
       return false;
   }
-  
+
   return closeURL();
 }
 
@@ -939,16 +940,16 @@
 {
   if (multiPage.isNull())
     return false;
-  
+
   if( watch && !m_file.isEmpty() )
     watch->removeFile( m_file );
-  
+
   KParts::ReadOnlyPart::closeURL();
   multiPage->closeURL();
   m_url = QString::null;
   checkActions();
   emit setWindowCaption("");
-  
+
   return true;
 }
 
@@ -962,7 +963,7 @@
     userRequestedPaperSize.setPageSize(media->currentText());
     return;
   }
-  
+
   // If the user has chosen "Custom paper size..", show the paper size
   // dialog. Construct it, if necessary. The paper size dialog will
   // know the address of userRequestedPaperSize and change this
@@ -1007,7 +1008,7 @@
 void KViewPart::goToPage()
 {
   bool ok = false;
-  int p = KInputDialog::getInteger(i18n("Go to Page"), i18n("Page:"), 
+  int p = KInputDialog::getInteger(i18n("Go to Page"), i18n("Page:"),
                                    multiPage->currentPageNumber(), 1, multiPage->numberOfPages(),
                                    1 /*step*/, &ok, mainWidget, "gotoDialog");
   if (ok)
@@ -1023,7 +1024,7 @@
     enableFitToPage(false);
   }
   else if(fitWidthAct -> isChecked())
-  {  
+  {
     fitWidthAct -> setChecked(false);
     enableFitToWidth(false);
   }
@@ -1131,7 +1132,7 @@
 
 void KViewPart::fitToPage()
 {
-  double z = QMIN(multiPage->calculateFitToHeightZoomValue(), 
+  double z = QMIN(multiPage->calculateFitToHeightZoomValue(),
                   multiPage->calculateFitToWidthZoomValue());
 
   // Check if the methods returned usable values. Values that are not
@@ -1356,12 +1357,6 @@
 
 void KViewPart::writeSettings()
 {
-  // if loading the KPart failed - just exit now
-  //if (!showSidebar)
-  //  return;
-
-  multiPage->writeSettings();
-
   KVSPrefs::setPageMarks(showSidebar->isChecked());
   KVSPrefs::setWatchFile(watchAct->isChecked());
   KVSPrefs::setZoom(_zoomVal.value());
@@ -1369,6 +1364,9 @@
   KVSPrefs::setScrollbars(scrollbarHandling->isChecked());
   KVSPrefs::setUseDocumentSpecifiedSize(useDocumentSpecifiedSize->isChecked());
 
+  if (!multiPage.isNull())
+    multiPage->writeSettings();
+
   if (fitPageAct->isChecked())
     KVSPrefs::setFitToPage(KVSPrefs::EnumFitToPage::FitToPage);
   else if(fitWidthAct->isChecked())