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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - AX: CrashTracer: com.apple.WebKit.WebContent at WebCore::AccessibilityRenderObject::remoteSVGRootElement const + 227"
href="https://bugs.webkit.org/show_bug.cgi?id=158685">158685</a>
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<th>Summary</th>
<td>AX: CrashTracer: com.apple.WebKit.WebContent at WebCore::AccessibilityRenderObject::remoteSVGRootElement const + 227
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>Safari 9
</td>
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<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Keywords</th>
<td>InRadar
</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>Accessibility
</td>
</tr>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>cfleizach@apple.com
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</tr>
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<th>CC</th>
<td>webkit-bug-importer@group.apple.com
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<pre>Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
Thread 0 Crashed ↩:: Dispatch queue: com.apple.main-thread
0 com.apple.WebCore 0x1102ec6d3 WebCore::AccessibilityRenderObject::remoteSVGRootElement(WebCore::AccessibilityRenderObject::CreationChoice) const + 227 (/Library/Caches/com.apple.xbs/Sources/WebCore/WebCore-7602.1.35/accessibility/AccessibilitySVGRoot.h:55)
1 com.apple.WebCore 0x1102e427b WebCore::AccessibilityRenderObject::detach(WebCore::AccessibilityDetachmentType, WebCore::AXObjectCache*) + 27 (/Library/Caches/com.apple.xbs/Sources/WebCore/WebCore-7602.1.35/accessibility/AccessibilityRenderObject.cpp:2976)
2 com.apple.WebCore 0x11035bfb9 WebCore::AXObjectCache::~AXObjectCache() + 153 (/Library/Caches/com.apple.xbs/Sources/WebCore/WebCore-7602.1.35/accessibility/AXObjectCache.cpp:193)
3 com.apple.WebCore 0x1104dc4d4 WebCore::Document::destroyRenderTree() + 116 (/Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.11.xctoolchain/usr/bin/../include/c++/v1/memory:2459)
4 com.apple.WebCore 0x1100a4a06 WebCore::Document::prepareForDestruction() + 358 (/Library/Caches/com.apple.xbs/Sources/WebCore/WebCore-7602.1.35/dom/Document.cpp:2325)
---
Smoking gun
if (!is<AccessibilitySVGRoot>(*rootSVGObject))
Trying to take nil ptr rootSVGObject and dereference it
<rdar://problem/26755269></pre>
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