Bug 262105

``` Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000 Exception Codes: 0x0000000000000001, 0x0000000000000000 Termination Reason: Namespace SIGNAL, Code 11 Segmentation fault: 11 Terminating Process: exc handler [5276] VM Region Info: 0 is not in any region. Bytes before following region: 4443250688 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL UNUSED SPACE AT START ---> __TEXT 108d6a000-108d6e000 [ 16K] r-x/r-x SM=COW ...U.Development Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 0x0 1 com.apple.WebCore 0x11825727a WebCore::SourceBufferParserWebM::SourceBufferParserWebM() 2 com.apple.WebCore 0x117109b6a WebCore::MediaPlayerFactoryWebM::createMediaEnginePlayer(WebCore::MediaPlayer*) const 3 com.apple.WebCore 0x1181bb76e WebCore::MediaPlayer::loadWithNextMediaEngine(WebCore::MediaPlayerFactory const*) 4 com.apple.WebCore 0x1181bb3f0 WebCore::MediaPlayer::load(WTF::URL const&, WebCore::ContentType const&, WTF::String const&, bool) 5 com.apple.WebKit 0x10c45f36c WebKit::RemoteMediaPlayerProxy::load(WTF::URL&&, std::__1::optional<WebKit::SandboxExtensionHandle>&&, WebCore::ContentType const&, WTF::String const&, bool, WTF::CompletionHandler<void (WebKit::RemoteMediaPlayerConfiguration&&)>&&) 6 com.apple.WebKit 0x10c385c9c WebKit::RemoteMediaPlayerProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 7 com.apple.WebKit 0x10c45de96 WebKit::RemoteMediaPlayerManagerProxy::didReceivePlayerMessage(IPC::Connection&, IPC::Decoder&) 8 com.apple.WebKit 0x10c41b384 WebKit::GPUConnectionToWebProcess::dispatchMessage(IPC::Connection&, IPC::Decoder&) 9 com.apple.WebKit 0x10c3fb712 WebKit::GPUConnectionToWebProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 10 com.apple.WebKit 0x10cc1f358 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder>>) 11 com.apple.WebKit 0x10cc218b0 WTF::Detail::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder>>)::$_15, void>::call() 12 com.apple.JavaScriptCore 0x109a5f77e WTF::RunLoop::performWork() 13 com.apple.JavaScriptCore 0x109a6041a WTF::RunLoop::performWork(void*) 14 com.apple.CoreFoundation 0x7ff80f135f2a __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 16 (/AppleInternal/Library/BuildRoots/7706b06a-1420-11ee-b0e6-aead88ae2785/Library/Caches/com.apple.xbs/Sources/CoreFoundation/CoreFoundation/RunLoop.subproj/CFRunLoop.c:1957) 15 com.apple.CoreFoundation 0x7ff80f135ecc __CFRunLoopDoSource0 + 156 (/AppleInternal/Library/BuildRoots/7706b06a-1420-11ee-b0e6-aead88ae2785/Library/Caches/com.apple.xbs/Sources/CoreFoundation/CoreFoundation/RunLoop.subproj/CFRunLoop.c:2001) 16 com.apple.CoreFoundation 0x7ff80f135ca4 __CFRunLoopDoSources0 + 216 (/AppleInternal/Library/BuildRoots/7706b06a-1420-11ee-b0e6-aead88ae2785/Library/Caches/com.apple.xbs/Sources/CoreFoundation/CoreFoundation/RunLoop.subproj/CFRunLoop.c:2038) 17 com.apple.CoreFoundation 0x7ff80f13492e __CFRunLoopRun + 914 (/AppleInternal/Library/BuildRoots/7706b06a-1420-11ee-b0e6-aead88ae2785/Library/Caches/com.apple.xbs/Sources/CoreFoundation/CoreFoundation/RunLoop.subproj/CFRunLoop.c:2953) 18 com.apple.CoreFoundation 0x7ff80f133f30 CFRunLoopRunSpecific + 558 (/AppleInternal/Library/BuildRoots/7706b06a-1420-11ee-b0e6-aead88ae2785/Library/Caches/com.apple.xbs/Sources/CoreFoundation/CoreFoundation/RunLoop.subproj/CFRunLoop.c:3418) 19 com.apple.Foundation 0x7ff80ffc02a2 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 214 (/AppleInternal/Library/BuildRoots/7706b06a-1420-11ee-b0e6-aead88ae2785/Library/Caches/com.apple.xbs/Sources/Foundation/Foundation/Soil.subproj/NSRunLoop.m:373) 20 com.apple.Foundation 0x7ff810042c98 -[NSRunLoop(NSRunLoop) run] + 76 (/AppleInternal/Library/BuildRoots/7706b06a-1420-11ee-b0e6-aead88ae2785/Library/Caches/com.apple.xbs/Sources/Foundation/Foundation/Soil.subproj/NSRunLoop.m:398) 21 libxpc.dylib 0x7ff80edac7f2 _xpc_objc_main + 772 (/AppleInternal/Library/BuildRoots/7ea4e607-15d6-11ee-a47e-aead88ae2785/Library/Caches/com.apple.xbs/Sources/libxpc/src/main.m:246) 22 libxpc.dylib 0x7ff80edac1f6 xpc_main + 94 (/AppleInternal/Library/BuildRoots/7ea4e607-15d6-11ee-a47e-aead88ae2785/Library/Caches/com.apple.xbs/Sources/libxpc/src/init.c:1258) 23 com.apple.WebKit 0x10c4361fc WebKit::XPCServiceMain(int, char const**) 24 dyld 0x7ff80ed0041e start + 1902 (/AppleInternal/Library/BuildRoots/ac308551-1a46-11ee-ab79-46d450270006/Library/Caches/com.apple.xbs/Sources/dyld/dyld/dyldMain.cpp:1165) ```