File watcher causes Plasma crash on mouseover

I find that it crashes when I:

-Click the configure button in the middle of the plasmoid to configure the file being watched
-Mouseing back over the plasmoid makes it crash consistently.

File Watcher is in kdeplasma-addons, so moving there.

StacktraceTop:?? ()

Is actually a Qt issue, fixed in Qt copy with 0260-fix-qgraphicswidget-deletionclearFocus.diff
It might be wise to pick this one up, as it is probably also the culprit of the Twitter crash-on-focus.

Working on it.

Here's a debdiff of the fix. Sorry it took so long.
I've uploaded a fixed package to my personal package archive for testing, and so far it fixes the crash completely for me.

Reviewing the change for sponsorship ...

This bug was fixed in the package qt4-x11 - 4.4.3-1ubuntu5

---------------
qt4-x11 (4.4.3-1ubuntu5) jaunty; urgency=low

  * Add 0260-fix-qgraphicswidget-deletionclearFocus.diff from KDE's qt-copy
    Fixes KDE bug 168278 observable in the file watcher plasmoid (LP: #272399)

 -- Jonathan Thomas <email address hidden> Wed, 03 Dec 2008 18:54:29 -0500

Fixed package for intrepid-proposed.

Thank you Jonathan.
Your help is appreciated.

Fabio

2009/1/14, Jonathan Thomas <email address hidden>:
>
> ** Attachment added: "qt4-x11_4.4.3-0ubuntu1.2.diff.gz"
> http://launchpadlibrarian.net/21219167/qt4-x11_4.4.3-0ubuntu1.2.diff.gz
>
> --
> File watcher causes Plasma crash on mouseover
> https://bugs.launchpad.net/bugs/272399
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in KDE Base Components: Fix Released
> Status in "qt4-x11" source package in Ubuntu: Fix Released
>
> Bug description:
> Binary package hint: kdebase-workspace
>
> Plasma crashed when I moving plasmoid "File Watcher"
> I think that is qt-language-selector problem, because if language is English
> - no crashes.
>
> KUbuntu 8.10 alpha6 with all updates.
>
> ProblemType: Crash
> Architecture: i386
> Disassembly: 0xb7f7a430:
> DistroRelease: Ubuntu 8.10
> ExecutablePath: /usr/bin/plasma
> Package: kdebase-workspace-bin 4:4.1.1-0ubuntu5
> ProcAttrCurrent: unconfined
> ProcCmdline: /usr/bin/plasma
> ProcEnviron:
> PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
> LANG=ru_RU.UTF-8
> SHELL=/bin/bash
> Signal: 11
> SourcePackage: kdebase-workspace
> Stacktrace: #0 0xb7f7a430 in ?? ()
> StacktraceTop: ?? ()
> ThreadStacktrace:
>
> Title: plasma crashed with SIGSEGV
> Uname: Linux 2.6.27-3-generic i686
> UserGroups: adm admin cdrom dialout fuse lpadmin plugdev sambashare
>
>
> *Below added by Jonathan Thomas*
> Stable Release Update (SRU) infos:
> -Impact: Anybody who tries to configure the file watcher (or twitter)
> plasmoid via the "configure" button on the front of the plasmoid will
> recieve a crash next time they mouse over or click on the plasmoid after
> configuration.
> -Addressed by: This bug has been addressed by adding a Qt-copy patch set
> for release in Qt 4.4.4, which properly clears focus, preventing the crash
> -Testcase: Install kdebase-workspace and kdeplasma-addons. Add the file
> watcher plasmoid to the desktop. Configure the plasmoid by clicking the
> configure button in the middle of the currently-blank plasmoid and select a
> file for it to watch. Once you press ok on the settings dialog, mouse over
> or click the plasmoid, and plasma should crash.
> -Patch/regression potential: The patch is extremely small, set for release
> with Qt 4.4.4, and it included in KDE's Qt-copy, making the regression
> potential for this very small. In my testing I have not noticed regressions.
>

--

dott.ing. Fabio Zottele
Ing. civile ed ambientale, industriale e dell'informazione
ISCR. ALBO N° 2912 - Sezione A degli Ingegneri -Provincia di Trento
via R. Guardini, 63 - 38100 Trento

Accepted into intrepid-proposed, please test and give feedback here. Please see https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

FWIW I have been using this patch for over a week on my main system, and it seems to be doing fine. No new plasma bugs that I can see, and the plasmoid-related crashes seemed to have ceased.

This bug was fixed in the package qt4-x11 - 4.4.3-0ubuntu1.2

---------------
qt4-x11 (4.4.3-0ubuntu1.2) intrepid-proposed; urgency=low

  * Add 0260-fix-qgraphicswidget-deletionclearFocus.diff from KDE's qt-copy
    Fixes KDE bug 168278 observable in the file watcher plasmoid (LP: #272399)

 -- Jonathan Thomas <email address hidden> Wed, 14 Jan 2009 11:51:36 -0500