Bug 81358

Version:            (using KDE KDE 3.2.2)
Installed from:    Debian testing/unstable Packages
OS:                Linux

When trying to preview a posting (prior to submitting it) on www.debianforum.de I can reproducibly crash konqueror with the following backtrace (Dr. Konqi assumes it is useless, but it looks halfway OK to me, especially as gdb comes up with the same backtrace, which I am including below):

-------- Start of Backtrace -------------
GDB Backtrace:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1101504640 (LWP 22179)]
0x40c59547 in QObject::inherits () from /usr/lib/libqt-mt.so.3
(gdb) bt
#0  0x40c59547 in QObject::inherits () from /usr/lib/libqt-mt.so.3
#1  0x421e99b9 in KHTMLPartBrowserExtension::updateEditActions () from /usr/lib/libkhtml.so.4
#2  0x421e9549 in KHTMLPartBrowserExtension::setExtensionProxy () from /usr/lib/libkhtml.so.4
#3  0x421e4e62 in KHTMLPart::slotActiveFrameChanged () from /usr/lib/libkhtml.so.4
#4  0x421e7024 in KHTMLPart::qt_invoke () from /usr/lib/libkhtml.so.4
#5  0x40c5bd9c in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#6  0x40194b2d in KParts::PartManager::activePartChanged () from /usr/lib/libkparts.so.2
#7  0x401940bc in KParts::PartManager::setActivePart () from /usr/lib/libkparts.so.2
#8  0x40193a85 in KParts::PartManager::removePart () from /usr/lib/libkparts.so.2
#9  0x00000000 in ?? ()
#10 0x00000000 in ?? ()
#11 0xbfffe240 in ?? ()
#12 0x409616c4 in kde_malloc_is_used () from /usr/lib/libkdecore.so.4
#13 0x00000000 in ?? ()
#14 0xbfffe278 in ?? ()
#15 0x412acef4 in ?? () from /usr/lib/libstdc++.so.5
#16 0x0856c850 in ?? ()
#17 0x0856c848 in ?? ()
#18 0xbfffe268 in ?? ()
#19 0x4092a38e in posix_memalign () from /usr/lib/libkdecore.so.4
Previous frame inner to this frame (corrupt stack?)
--------- End of Backtrace ---------------
As mentioned, Dr. Konqi comes up with the same backtrace, but says it is not useable, and deactivates the "Copy" and "Save" buttons...

Steps to reproduce:
1) You need an account on the site. Simply register one, or contact me by private mail, so I can supply you with a temporary test account.
2) Go to any thread in the forum, threads with more Replies (german: "Antworten") are better suited, as otherwise step 4 won't work.
3) Click on "Antwort erstellen" to create a reply. You are then presented with a form where you can enter a reply. Enter a few letters there (otherwise phpBB will complain that you entered no text).
4) *This step is crucial!* Below the big textarea, there is a summary of the current thread containing the last few replies in the thread. Scroll this field down a little bit, so the scrollbar is not in its topmost position (Not the main scrollbar of the window!). If I omit this step, konqueror won't crash.
5) Click on "Vorschau" (english: "Preview") and konqueror crashes with the aforementioned backtrace.

I can reproduce this 100% of the time.

Relevant packages installed on my system:
dreker@wintermute:dreker$ dpkg -l kdelibs4 libc6 libgcc1 xlibs libkonq4 libqt3c102-mt
ii  kdelibs4        3.2.2-2         KDE core libraries
ii  libc6           2.3.2.ds1-12    GNU C Library: Shared libraries and Timezone d
ii  libgcc1         3.3.3-7         GCC support library
ii  xlibs           4.3.0.dfsg.1-1  X Window System client libraries metapackage a
ii  libkonq4        3.2.2-1         Core libraries for KDE's file manager
ii  libqt3c102-mt   3.2.3-2         Qt GUI Library (Threaded runtime version)

Please contact me, if you need more information. I can also assist with a little gdb work, if this turns out to be unreproducible.

Patrick