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<head>
<base href="https://bugs.webkit.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Null dereference loading Blink layout test fast/parser/iframe-onload-document-close-with-external-script-2.html"
href="https://bugs.webkit.org/show_bug.cgi?id=149308">149308</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Null dereference loading Blink layout test fast/parser/iframe-onload-document-close-with-external-script-2.html
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>WebKit Nightly Build
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>OS</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Keywords</th>
<td>BlinkMergeCandidate, HasReduction, NeedsRadar
</td>
</tr>
<tr>
<th>Severity</th>
<td>Normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P2
</td>
</tr>
<tr>
<th>Component</th>
<td>Page Loading
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jhoneycutt@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>webkit-bug-importer@group.apple.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=261445" name="attach_261445" title="crashing test">attachment 261445</a> <a href="attachment.cgi?id=261445&action=edit" title="crashing test">[details]</a></span>
crashing test
Null dereference loading Blink layout test fast/parser/iframe-onload-document-close-with-external-script-2.html.
Stack trace:
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
VM Regions Near 0:
-->
__TEXT 0000000105471000-0000000105473000 [ 8K] r-x/rwx SM=COW /Users/USER/*/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.Development.xpc/Contents/MacOS/com.apple.WebKit.WebContent.Development
Application Specific Information:
CRASHING TEST: temp-tests/fast/parser/iframe-onload-document-close-with-external-script-2.html
Global Trace Buffer (reverse chronological seconds):
18.407070 CFNetwork 0x00007fff88d43b97 Explicitly setting CF cookie storage singleton
18.407452 CFNetwork 0x00007fff88d8f211 Explicitly setting cookie storage singleton
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.WebCore 0x000000010d4674a1 WebCore::DocumentMarkerController::detach() + 17 (HashTable.h:1202)
1 com.apple.WebCore 0x000000010d434948 WebCore::Document::removedLastRef() + 488 (HashTable.h:1202)
2 com.apple.JavaScriptCore 0x000000010cbc0a28 JSC::MarkedBlock::FreeList JSC::MarkedBlock::specializedSweep<(JSC::MarkedBlock::BlockState)3, (JSC::MarkedBlock::SweepMode)1, true>() + 184 (JSCell.h:151)
3 com.apple.JavaScriptCore 0x000000010cbc06bd JSC::MarkedBlock::FreeList JSC::MarkedBlock::sweepHelper<true>(JSC::MarkedBlock::SweepMode) + 173 (MarkedBlock.cpp:145)
4 com.apple.JavaScriptCore 0x000000010cbc016b JSC::MarkedBlock::sweep(JSC::MarkedBlock::SweepMode) + 75 (MarkedBlock.cpp:126)
5 com.apple.JavaScriptCore 0x000000010cbbf3d1 JSC::MarkedAllocator::allocateSlowCase(unsigned long) + 225 (MarkedAllocator.cpp:74)
6 com.apple.JavaScriptCore 0x000000010cb4f1aa JSC::InferredValue::create(JSC::VM&) + 154 (MarkedAllocator.h:94)
7 com.apple.JavaScriptCore 0x000000010c958277 JSC::FunctionExecutable::finishCreation(JSC::VM&) + 39 (WriteBarrierInlines.h:54)
8 com.apple.JavaScriptCore 0x000000010cb91c80 JSC::UnlinkedFunctionExecutable::link(JSC::VM&, JSC::SourceCode const&, int) + 336 (Executable.h:621)
9 com.apple.JavaScriptCore 0x000000010caebfb6 JSC::JSGlobalObject::init(JSC::VM&) + 32566 (JSGlobalObject.cpp:526)
10 com.apple.WebCore 0x000000010d86ac89 JSC::JSGlobalObject::finishCreation(JSC::VM&, JSC::JSObject*) + 201 (JSGlobalObject.h:371)
11 com.apple.WebCore 0x000000010d8b8456 WebCore::JSDOMWindowBase::finishCreation(JSC::VM&, WebCore::JSDOMWindowShell*) + 38 (JSDOMWindowBase.cpp:75)
12 com.apple.WebCore 0x000000010d8bd96e WebCore::JSDOMWindowShell::setWindow(WTF::PassRefPtr<WebCore::DOMWindow>) + 558 (JSDOMWindow.h:40)
13 com.apple.WebCore 0x000000010decddea WebCore::ScriptController::clearWindowShell(WebCore::DOMWindow*, bool) + 314 (StdLibExtras.h:366)
14 com.apple.WebCore 0x000000010d5c5e16 WebCore::FrameLoader::clear(WebCore::Document*, bool, bool, bool) + 294 (FrameLoader.cpp:621)
15 com.apple.WebCore 0x000000010d4753f5 WebCore::DocumentWriter::begin(WebCore::URL const&, bool, WebCore::Document*) + 309 (StdLibExtras.h:366)
16 com.apple.WebCore 0x000000010d45de75 WebCore::DocumentLoader::commitData(char const*, unsigned long) + 181 (StdLibExtras.h:366)
17 com.apple.WebKit 0x000000010ba85b42 WebKit::WebFrameLoaderClient::committedLoad(WebCore::DocumentLoader*, char const*, int) + 50 (WebFrameLoaderClient.cpp:946)
18 com.apple.WebCore 0x000000010d45fb01 WebCore::DocumentLoader::commitLoad(char const*, int) + 145 (DocumentLoader.h:225)
19 com.apple.WebCore 0x000000010d28a250 WebCore::CachedRawResource::notifyClientsDataWasReceived(char const*, unsigned int) + 160 (CachedResourceClientWalker.h:51)
20 com.apple.WebCore 0x000000010d28a121 WebCore::CachedRawResource::addDataBuffer(WebCore::SharedBuffer&) + 145 (CachedRawResource.cpp:70)
21 com.apple.WebCore 0x000000010e004f8a WebCore::SubresourceLoader::didReceiveDataOrBuffer(char const*, int, WTF::PassRefPtr<WebCore::SharedBuffer>, long long, WebCore::DataPayloadType) + 218 (SubresourceLoader.cpp:292)
22 com.apple.WebCore 0x000000010e004e73 WebCore::SubresourceLoader::didReceiveData(char const*, unsigned int, long long, WebCore::DataPayloadType) + 35 (StdLibExtras.h:366)
23 com.apple.WebKit 0x000000010bb4b85d WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::MessageDecoder&) + 257 (HandleMessage.h:16)
24 com.apple.WebKit 0x000000010b9251f1 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::MessageDecoder, std::__1::default_delete<IPC::MessageDecoder> >) + 127 (memory:2636)
25 com.apple.WebKit 0x000000010b927b4a IPC::Connection::dispatchOneMessage() + 126 (memory:2656)
26 com.apple.JavaScriptCore 0x000000010cd69985 WTF::RunLoop::performWork() + 437 (functional:1742)
27 com.apple.JavaScriptCore 0x000000010cd69d32 WTF::RunLoop::performWork(void*) + 34 (RunLoopCF.cpp:39)
28 com.apple.CoreFoundation 0x00007fff949e2c01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
29 com.apple.CoreFoundation 0x00007fff949d4b1c __CFRunLoopDoSources0 + 556
30 com.apple.CoreFoundation 0x00007fff949d403f __CFRunLoopRun + 927
31 com.apple.CoreFoundation 0x00007fff949d3a38 CFRunLoopRunSpecific + 296
32 com.apple.HIToolbox 0x00007fff88e673bd RunCurrentEventLoopInMode + 235
33 com.apple.HIToolbox 0x00007fff88e67153 ReceiveNextEventCommon + 432
34 com.apple.HIToolbox 0x00007fff88e66f93 _BlockUntilNextEventMatchingListInModeWithFilter + 71
35 com.apple.AppKit 0x00007fff870b81e7 _DPSNextEvent + 1076
36 com.apple.AppKit 0x00007fff8748490d -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
37 com.apple.AppKit 0x00007fff870ae0b8 -[NSApplication run] + 682
38 com.apple.AppKit 0x00007fff87030396 NSApplicationMain + 1176
39 libxpc.dylib 0x00007fff8c70ff70 _xpc_objc_main + 793
40 libxpc.dylib 0x00007fff8c7116bf xpc_main + 494
41 com.apple.WebKit.WebContent.Development 0x0000000105472424 main + 409 (XPCServiceMain.Development.mm:187)
42 libdyld.dylib 0x00007fff93aa15ad start + 1</pre>
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