Bug 244161

Description: imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-negative.html imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-without-codecs-parameter.html imported/w3c/web-platform-tests/media-source/mediasource-changetype-play.html The first failure I saw on the dashboard was on 8/17/2022 at 253522@main with macOS Debug. REPRODUCTION STEPS I can reproduce this on 253523@main but cannot reproduce it on 253520@main or earlier. I cannot isolate and repro down to the commit that introduced the change due to a lack of roots in the 253522@main-253521@main range. Command: run-webkit-tests --debug --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 -f --no-retry imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-negative.html Result: Regressions: Unexpected crashes (1) imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-negative.html [ Crash ] History: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-changetype-play-negative.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-changetype-play-without-codecs-parameter.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-changetype-play.html&platform=mac&style=debug&limit=50000 Crash Log: Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.JavaScriptCore 0x12c32b06e WTFCrash 1 com.apple.WebKit 0x13a83175c WebKit::GPUConnectionToWebProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 2 com.apple.WebKit 0x13b1d8b5e IPC::Connection::dispatchMessage(IPC::Decoder&) 3 com.apple.WebKit 0x13b1d9224 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) 4 com.apple.WebKit 0x13b1d97cc IPC::Connection::dispatchOneIncomingMessage() 5 com.apple.WebKit 0x13b1f9314 IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_16::operator()()