Crash log is: 0 com.apple.WebCore 0x00000001160d269c WTF::Optional<WebCore::FetchBodyOwner::BlobLoader>::operator bool() const + 12 1 com.apple.WebCore 0x00000001160d14a5 WebCore::FetchBodyOwner::stop() + 213 2 com.apple.WebCore 0x00000001179428c2 WebCore::ScriptExecutionContext::stopActiveDOMObjects() + 290 3 com.apple.WebCore 0x0000000118097da9 WebCore::WorkerThread::stop()::$_0::operator()(WebCore::ScriptExecutionContext&) const + 57 4 com.apple.WebCore 0x0000000118097d47 WTF::Function<void (WebCore::ScriptExecutionContext&)>::CallableWrapper<WebCore::WorkerThread::stop()::$_0>::call(WebCore::ScriptExecutionContext&) + 55 5 com.apple.WebCore 0x0000000115ef5b57 WTF::Function<void (WebCore::ScriptExecutionContext&)>::operator()(WebCore::ScriptExecutionContext&) const + 119 6 com.apple.WebCore 0x0000000115ee59fd WebCore::ScriptExecutionContext::Task::performTask(WebCore::ScriptExecutionContext&) + 29 7 com.apple.WebCore 0x000000011808f6c9 WebCore::WorkerRunLoop::Task::performTask(WebCore::WorkerRunLoop const&, WebCore::WorkerGlobalScope*) + 105 8 com.apple.WebCore 0x000000011808f4e8 WebCore::WorkerRunLoop::runCleanupTasks(WebCore::WorkerGlobalScope*) + 408 9 com.apple.WebCore 0x000000011808ed63 WebCore::WorkerRunLoop::run(WebCore::WorkerGlobalScope*) + 115 10 com.apple.WebCore 0x0000000118097455 WebCore::WorkerThread::runEventLoop() + 53 11 com.apple.WebCore 0x0000000115e4d2c9 WebCore::DedicatedWorkerThread::runEventLoop() + 89 12 com.apple.WebCore 0x0000000118097377 WebCore::WorkerThread::workerThread() + 1127 13 com.apple.WebCore 0x0000000118096f05 WebCore::WorkerThread::workerThreadStart(void*) + 21
Created attachment 289671 [details] Patch
Is this rdar://problem/28438651?
(In reply to comment #2) > Is this rdar://problem/28438651? Yes
Comment on attachment 289671 [details] Patch I see three options here: 1. Remove the assert (which ensures that we correctly unset pending request) 2. Protect the body owner but this is not very useful in release 3. Protect the body owner in debug mode but that makes a difference with release, which may be also annoying. I chose option 3 but could also go with option 1
Created attachment 289944 [details] Patch
Created attachment 290081 [details] Patch
Comment on attachment 290081 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=290081&action=review > Source/WebCore/Modules/fetch/FetchBodyOwner.cpp:61 > + ASSERT(isUniqueReference || !m_blobLoader); ASSERT_UNUSED would make this cleaner.
Created attachment 290307 [details] Patch for landing
Comment on attachment 290307 [details] Patch for landing Rejecting attachment 290307 [details] from commit-queue. Failed to run "['/Volumes/Data/EWS/WebKit/Tools/Scripts/webkit-patch', '--status-host=webkit-queues.webkit.org', '--bot-id=webkit-cq-03', 'build', '--no-clean', '--no-update', '--build-style=release', '--port=mac']" exit_code: 2 cwd: /Volumes/Data/EWS/WebKit Last 500 characters of output: _64/FloatPolygon.dia -c /Volumes/Data/EWS/WebKit/Source/WebCore/platform/graphics/FloatPolygon.cpp -o /Volumes/Data/EWS/WebKit/WebKitBuild/WebCore.build/Release/WebCore.build/Objects-normal/x86_64/FloatPolygon.o ** BUILD FAILED ** The following build commands failed: CompileC /Volumes/Data/EWS/WebKit/WebKitBuild/WebCore.build/Release/WebCore.build/Objects-normal/x86_64/FetchBodyOwner.o Modules/fetch/FetchBodyOwner.cpp normal x86_64 c++ com.apple.compilers.llvm.clang.1_0.compiler (1 failure) Full output: http://webkit-queues.webkit.org/results/2173332
Created attachment 290309 [details] Patch for landing
Comment on attachment 290309 [details] Patch for landing Clearing flags on attachment: 290309 Committed r206633: <http://trac.webkit.org/changeset/206633>
All reviewed patches have been landed. Closing bug.
<rdar://problem/28438651>