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<base href="https://bugs.webkit.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Coordinated Graphics] Scrolling through 01.org/dleyna crashes WebKitWebProcess"
href="https://bugs.webkit.org/show_bug.cgi?id=162020">162020</a>
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<th>Summary</th>
<td>[Coordinated Graphics] Scrolling through 01.org/dleyna crashes WebKitWebProcess
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>WebKit Local Build
</td>
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<th>Hardware</th>
<td>Unspecified
</td>
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<th>OS</th>
<td>Unspecified
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Keywords</th>
<td>Gtk
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>Platform
</td>
</tr>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
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<th>Reporter</th>
<td>cgarcia@igalia.com
</td>
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<th>CC</th>
<td>bugs-noreply@webkitgtk.org
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</tr></table>
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<pre>Bug forwarded from GNOME bugzilla:
"Scrolling through <a href="https://01.org/dleyna/">https://01.org/dleyna/</a> once it has finished loading crashes WebKitWebProcess. Unfortunately, coredumpctl is unable to show the backtrace.
I have:
epiphany-3.20.3-1.fc24.x86_64
gtk3-3.20.9-1.fc24.x86_64
webkitgtk4-2.12.4-1.fc24.x86_64"
The problem is that we are trying to clone a ReferenceFilterOperation:
PassRefPtr<FilterOperation> clone() const override
{
// Reference filters cannot be cloned.
ASSERT_NOT_REACHED();
return nullptr;
}
That's from FilterAnimationValue copy constructor, and FilterOperations are never expected to be nullptr, so we end up crashing.
Thread 1 (Thread 0x7fc129322a80 (LWP 6125)):
#0 0x00007fc127c8e74a in WebCore::FilterAnimationValue::clone() const () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#1 0x00007fc127fd118e in WebCore::TextureMapperAnimation::TextureMapperAnimation(WebCore::TextureMapperAnimation const&) () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#2 0x00007fc127fd217a in WebCore::TextureMapperAnimations::add(WebCore::TextureMapperAnimation const&) () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#3 0x00007fc127fe4d83 in WebCore::CoordinatedGraphicsLayer::addAnimation(WebCore::KeyframeValueList const&, WebCore::FloatSize const&, WebCore::Animation const*, WTF::String const&, double) () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#4 0x00007fc127c87e5a in WebCore::RenderLayerBacking::startTransition(double, WebCore::CSSPropertyID, WebCore::RenderStyle const*, WebCore::RenderStyle const*) ()
from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#5 0x00007fc1279c657c in WebCore::AnimationBase::updateStateMachine(WebCore::AnimationBase::AnimationStateInput, double) () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#6 0x00007fc1279c90ed in WebCore::AnimationControllerPrivate::styleAvailable() () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#7 0x00007fc1279c92c5 in WebCore::AnimationControllerPrivate::endAnimationUpdate() () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#8 0x00007fc1274cc130 in WebCore::Document::recalcStyle(WebCore::Style::Change) () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#9 0x00007fc1274cb359 in WebCore::Document::updateLayout() () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#10 0x00007fc1274cdf12 in WebCore::Document::updateLayoutIgnorePendingStylesheets(WebCore::Document::RunPostLayoutTasks) () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#11 0x00007fc127942d42 in WebCore::DOMWindow::scrollY() const () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#12 0x00007fc128335fe4 in WebCore::jsDOMWindowPageYOffset(JSC::ExecState*, long, JSC::PropertyName) () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#13 0x00007fc1258b43e7 in JSC::PropertySlot::customGetter(JSC::ExecState*, JSC::PropertyName) const () from /home/cgarcia/gnome/lib/libjavascriptcoregtk-4.0.so.18
#14 0x00007fc125617f41 in llint_slow_path_get_by_val () from /home/cgarcia/gnome/lib/libjavascriptcoregtk-4.0.so.18
#15 0x00007fc125626b08 in llint_entry () from /home/cgarcia/gnome/lib/libjavascriptcoregtk-4.0.so.18
We just need to validate the filters before setting then and before creating a TextureMapperAnimation for them.</pre>
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