146098 2015-06-17 21:12:28 -0700 Assertion failure (m_eventListeners.contains(std::make_pair(&connection, storageMapID))) in StorageArea::removeListener after closing a Safari tab 2015-06-22 08:04:10 -0700 1 1 1 Unclassified WebKit WebKit2 528+ (Nightly build) Unspecified Unspecified NEW P2 Normal --- 1 mitz webkit-unassigned andersca beidson mcatanzaro oldest_to_newest 1102797 0 mitz 2015-06-17 21:12:28 -0700 After closing a Safari tab, the assertion in StorageArea::removeListener failed with this backtrace: #0 0x000000010280f3ba in WTFCrash at Source/WTF/wtf/Assertions.cpp:321 #1 0x0000000104b39c77 in WebKit::StorageManager::StorageArea::removeListener(IPC::Connection&, unsigned long long) at Source/WebKit2/UIProcess/Storage/StorageManager.cpp:202 #2 0x0000000104b53ce2 in WebKit::StorageManager::processDidCloseConnection(WebKit::WebProcessProxy&, IPC::Connection&)::$_4::operator()() const at Source/WebKit2/UIProcess/Storage/StorageManager.cpp:547 #3 0x0000000104b53b9c in decltype(std::__1::forward<WebKit::StorageManager::processDidCloseConnection(WebKit::WebProcessProxy&, IPC::Connection&)::$_4&>(fp)(std::__1::forward<>(fp0))) std::__1::__invoke<WebKit::StorageManager::processDidCloseConnection(WebKit::WebProcessProxy&, IPC::Connection&)::$_4&>(WebKit::StorageManager::processDidCloseConnection(WebKit::WebProcessProxy&, IPC::Connection&)::$_4&&&) [inlined] at /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.10.xctoolchain/usr/bin/../include/c++/v1/__functional_base:413 #4 0x0000000104b53b8b in std::__1::__function::__func<WebKit::StorageManager::processDidCloseConnection(WebKit::WebProcessProxy&, IPC::Connection&)::$_4, std::__1::allocator<WebKit::StorageManager::processDidCloseConnection(WebKit::WebProcessProxy&, IPC::Connection&)::$_4>, void ()>::operator()() at /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.10.xctoolchain/usr/bin/../include/c++/v1/functional:1370 #5 0x000000010231de0a in std::__1::function<void ()>::operator()() const at /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.10.xctoolchain/usr/bin/../include/c++/v1/functional:1755 #6 0x000000010282b229 in ___ZN3WTF9WorkQueue8dispatchENSt3__18functionIFvvEEE_block_invoke at Source/WTF/wtf/cocoa/WorkQueueCocoa.cpp:35 &connection was 0x000000011570ba40, m_eventListeners contained a single pair: first = { m_ptr = 0x000000011570ba40 } second = 3 however, storageMapID was 4, not 3. 1103838 1 mcatanzaro 2015-06-22 08:04:10 -0700 You can reproduce this on this page: http://rt.com/usa/268756-jersey-city-party-shooting/ When I use the web inspector to view storage for this site, I see these warnings: ERROR: Unhandled web process message 'StorageAreaMap:DispatchStorageEvent' ../../Source/WebKit2/WebProcess/WebProcess.cpp(641) : virtual void WebKit::WebProcess::didReceiveMessage(IPC::Connection &, IPC::MessageDecoder &) ERROR: Unhandled web process message 'StorageAreaMap:DispatchStorageEvent' ../../Source/WebKit2/WebProcess/WebProcess.cpp(641) : virtual void WebKit::WebProcess::didReceiveMessage(IPC::Connection &, IPC::MessageDecoder &)