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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/123648/">https://git.reviewboard.kde.org/r/123648/</a>
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<p>Ship it!</p>
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Good stuff :)</p></pre>
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<a href="https://git.reviewboard.kde.org/r/123648/diff/1/?file=366564#file366564line189" style="color: black; font-weight: bold; text-decoration: underline;">shell/shellcorona.cpp</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">ShellCorona::ShellCorona(QObject *parent)</pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">189</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">connect</span><span class="p">(</span><span class="n">qGuiApp</span><span class="p">,</span> <span class="o">&</span><span class="n">QGuiApplication</span><span class="o">::</span><span class="n">screenRemoved</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="o">&</span><span class="n">ShellCorona</span><span class="o">::</span><span class="n">screenRemoved</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">connect</span><span class="p">(</span><span class="n">qGuiApp</span><span class="p">,</span> <span class="o">&</span><span class="n">QGuiApplication</span><span class="o">::</span><span class="n">screenRemoved</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="o">&</span><span class="n">ShellCorona</span><span class="o">::</span><span class="n">screenRemoved</span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">an alternate solution would also be to move this to be inside ::load()</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">soo after GetConfigOperation is done.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">depends if we prefer error handling or avoiding having the error in the first place. I don't have a strong opinion, your choice.</p></pre>
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<p>- David Edmundson</p>
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<p>On May 5th, 2015, 10:08 p.m. UTC, Sebastian Kügler wrote:</p>
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<div>Review request for Plasma.</div>
<div>By Sebastian Kügler.</div>
<p style="color: grey;"><i>Updated May 5, 2015, 10:08 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://bugs.kde.org/show_bug.cgi?id=346590">346590</a>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
plasma-workspace
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<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;">Guard access to kscreen configuration
reconsiderOutputs() may be called before the async config fetching
operation (KScreen::GetConfigOperation) has finished, so the pointer is
still null at that point. This can happen if qApp::screenRemoved fires
before kscreen was able to start the backend loader and pass back a
ConfigPtr.
The bug is rooted by in the dual-use of libkscreen and qApp's QScreen
handling. The timings here produce this race condition. This patch
should be quite safe, though, since it doesn't change the logic, but
rather makes sure this race condition bails out nicely by falling back
to just waiting until a kscreen config has arrived (which will happen
right after).
BUG:346590
REVIEW:
FIXED-IN:5.3.1</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<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;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">I can't reproduce this crash myself.</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>shell/shellcorona.cpp <span style="color: grey">(558788daad66f8be7cc35955a5600ddab655cde6)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/123648/diff/" style="margin-left: 3em;">View Diff</a></p>
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