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List: kde-panel-devel
Subject: Re: Review Request 113471: Fix crash when removing an item while we are adding one
From: "Albert Astals Cid" <aacid () kde ! org>
Date: 2013-10-28 23:17:34
Message-ID: 20131028231734.12910.87602 () vidsolbach ! de
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This is an automatically generated e-mail. To reply, visit:
http://git.reviewboard.kde.org/r/113471/
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(Updated Oct. 28, 2013, 11:17 p.m.)
Status
------
This change has been marked as submitted.
Review request for kde-workspace, Plasma, Àlex Fiestas, and Michael Zanetti.
Bugs: 311871
http://bugs.kde.org/show_bug.cgi?id=311871
Repository: kde-workspace
Description
-------
Reading https://bugs.kde.org/show_bug.cgi?id=311871#c41 you can see that it happens \
that we are doing a #78 0x00007f4eff8c5ffb in QDeclarativeListModel::insert \
(this=0x1ebbdb0, index=0, valuemap=...) at util/qdeclarativelistmodel.cpp:436 and \
then we end up reentring and doing #16 0x00007f4eff8c737f in \
QDeclarativeListModel::remove (this=0x1ebbdb0, index=6) at \
util/qdeclarativelistmodel.cpp:402
Some of the stuff that depends on the QDeclarativeListModel doesn't seem to like \
getting a "remove" while a "insert" is happening and to be honest m in no mood to fix \
that, so basically I'm protecting against that happening in our QML code. From what i \
read you have to be extremely unlucky since the timer only triggers each 10 minutes \
and it has to trigger at the same time a notification is being added, but oh well, \
the backtrace points to it and two different people in two different systems say it \
has stopped the crashes so I don't think it hurts to have this in.
Diffs
-----
plasma/generic/applets/notifications/contents/ui/NotificationDelegate/NotificationDelegate.qml \
bf33eb1 plasma/generic/applets/notifications/contents/ui/Notifications.qml 114ead2
Diff: http://git.reviewboard.kde.org/r/113471/diff/
Testing
-------
I can't reproduce it in my desktop but Alex and Michael have been running this patch \
for weeks and can certainly say that the crashing situation has improved (i.e. no \
crashes in days with this patch and crashes daily without it).
Thanks,
Albert Astals Cid
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This is an automatically generated e-mail. To reply, visit:
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<div>Review request for kde-workspace, Plasma, Àlex Fiestas, and Michael \
Zanetti.</div> <div>By Albert Astals Cid.</div>
<p style="color: grey;"><i>Updated Oct. 28, 2013, 11:17 p.m.</i></p>
<div style="margin-top: 1.5em;">
<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="http://bugs.kde.org/show_bug.cgi?id=311871">311871</a>
</div>
<div style="margin-top: 1.5em;">
<b style="color: #575012; font-size: 10pt;">Repository: </b>
kde-workspace
</div>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" \
style="border: 1px solid #b8b5a0"> <tr>
<td>
<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">Reading https://bugs.kde.org/show_bug.cgi?id=311871#c41 you can see that \
it happens that we are doing a #78 0x00007f4eff8c5ffb in \
QDeclarativeListModel::insert (this=0x1ebbdb0, index=0, valuemap=...) at \
util/qdeclarativelistmodel.cpp:436 and then we end up reentring and doing
#16 0x00007f4eff8c737f in QDeclarativeListModel::remove (this=0x1ebbdb0, index=6) at \
util/qdeclarativelistmodel.cpp:402
Some of the stuff that depends on the QDeclarativeListModel doesn't seem to like \
getting a "remove" while a "insert" is happening and to be honest \
m in no mood to fix that, so basically I'm protecting against that happening in \
our QML code. From what i read you have to be extremely unlucky since the timer only \
triggers each 10 minutes and it has to trigger at the same time a notification is \
being added, but oh well, the backtrace points to it and two different people in two \
different systems say it has stopped the crashes so I don't think it hurts to \
have this in.</pre> </td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" style="border: \
1px solid #b8b5a0"> <tr>
<td>
<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">I can't reproduce it in my desktop but Alex and Michael have been \
running this patch for weeks and can certainly say that the crashing situation has \
improved (i.e. no crashes in days with this patch and crashes daily without \
it).</pre> </td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>plasma/generic/applets/notifications/contents/ui/NotificationDelegate/NotificationDelegate.qml \
<span style="color: grey">(bf33eb1)</span></li>
<li>plasma/generic/applets/notifications/contents/ui/Notifications.qml <span \
style="color: grey">(114ead2)</span></li>
</ul>
<p><a href="http://git.reviewboard.kde.org/r/113471/diff/" style="margin-left: \
3em;">View Diff</a></p>
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