[Webkit-unassigned] [Bug 238391] New: With DOM Rendering in GPUP enabled, tests rarely assert in GPUConnectionToWebProcess::didReceiveMessage()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=238391

            Bug ID: 238391
           Summary: With DOM Rendering in GPUP enabled, tests rarely
                    assert in
                    GPUConnectionToWebProcess::didReceiveMessage()
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Process Model
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com

Running fast/css tests in iOS simulator with DOM Rendering enabled, tests will sometimes assert here:

14:08:21.497 71433   1   0x14233d1a9 WTFCrash
14:08:21.497 71433   2   0x12ddf0e4b WTFCrashWithInfo(int, char const*, char const*, int)
14:08:21.497 71433   3   0x12e85e412 WebKit::GPUConnectionToWebProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&)
14:08:21.497 71433   4   0x12f1e93a0 IPC::Connection::dispatchMessage(IPC::Decoder&)
14:08:21.497 71433   5   0x12f1e9a95 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)
14:08:21.497 71433   6   0x12f1e3003 IPC::Connection::SyncMessageState::ConnectionAndIncomingMessage::dispatch()
14:08:21.497 71433   7   0x12f1e3298 IPC::Connection::SyncMessageState::dispatchMessagesAndResetDidScheduleDispatchMessagesForConnection(IPC::Connection&)
14:08:21.497 71433   8   0x12f1fa8ec IPC::Connection::SyncMessageState::processIncomingMessage(IPC::Connection&, std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >&)::$_5::operator()()
14:08:21.497 71433   9   0x12f1fa819 WTF::Detail::CallableWrapper<IPC::Connection::SyncMessageState::processIncomingMessage(IPC::Connection&, std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >&)::$_5, void>::call()
14:08:21.497 71433   10  0x142368852 WTF::Function<void ()>::operator()() const
14:08:21.497 71433   11  0x1423f2602 WTF::RunLoop::performWork()
14:08:21.497 71433   12  0x1423f5f2e WTF::RunLoop::performWork(void*)
14:08:21.497 71433   13  0x10a468833 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
14:08:21.497 71433   14  0x10a46872b __CFRunLoopDoSource0
14:08:21.497 71433   15  0x10a467bf8 __CFRunLoopDoSources0
14:08:21.497 71433   16  0x10a4622f4 __CFRunLoopRun
14:08:21.497 71433   17  0x10a461a90 CFRunLoopRunSpecific
14:08:21.497 71433   18  0x10adb1e31 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
14:08:21.497 71433   19  0x10adb204f -[NSRunLoop(NSRunLoop) run]
14:08:21.497 71433   20  0x10b8bffeb _xpc_objc_main
14:08:21.497 71433   21  0x10b8c1fd4 xpc_main
14:08:21.497 71433   22  0x12ea9c3ea WebKit::XPCServiceMain(int, char const**)
14:08:21.497 71433   23  0x1309acdcb WKXPCServiceMain
14:08:21.497 71433   24  0x109e14d32 main
14:08:21.497 71433   25  0x10a02af21
14:08:21.497 71433   26  0x1197f150e

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