[Webkit-unassigned] [Bug 200343] New: WebKit::ChildProcessProxy::sendMessage crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=200343

            Bug ID: 200343
           Summary: WebKit::ChildProcessProxy::sendMessage crash
           Product: WebKit
           Version: WebKit Local Build
          Hardware: iPhone / iPad
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: vaintwyt at gmail.com

My App met a crash when it in the background, or active from background.

mabey connection() is BAD_ACCESS?

==== code ====
bool ChildProcessProxy::sendMessage(std::unique_ptr<IPC::Encoder> encoder, OptionSet<IPC::SendOption> sendOptions)
{
    switch (state()) {
    case State::Launching:
        // If we're waiting for the child process to launch, we need to stash away the messages so we can send them once we have a connection.
        m_pendingMessages.append(std::make_pair(WTFMove(encoder), sendOptions));
        return true;

    case State::Running:
        return connection()->sendMessage(WTFMove(encoder), sendOptions); // look here

    case State::Terminated:
        return false;
    }

    return false;
}


==== crash ====

0WebKit
WebKit::ChildProcessProxy::sendMessage(std::__1::unique_ptr<IPC::Encoder, std::__1::default_delete<IPC::Encoder> >, WTF::OptionSet<IPC::SendOption>) (in WebKit)
1WebKit
bool WebKit::ChildProcessProxy::send<Messages::LegacyCustomProtocolManager::DidLoadData>(Messages::LegacyCustomProtocolManager::DidLoadData&&, unsigned long long, WTF::OptionSet<IPC::SendOption>) (in WebKit)
2WebKit
WebKit::LegacyCustomProtocolManagerProxy::didLoadData(unsigned long long, IPC::DataReference const&) (in WebKit)
3WebKit
-[WKCustomProtocolLoader connection:didReceiveData:] (in WebKit)
4CFNetwork
___65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke (in CFNetwork)
5CFNetwork
-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] (in CFNetwork)
6CFNetwork
-[NSURLConnectionInternal _withActiveConnectionAndDelegate:] (in CFNetwork)
7CFNetwork
_NSURLConnectionDidReceiveData(_CFURLConnection*, __CFData const*, long, void const*) (in CFNetwork)
8CFNetwork
____ZN27URLConnectionClient_Classic29_delegate_didReceiveDataArrayEv_block_invoke (in CFNetwork)
9CFNetwork
____ZN27URLConnectionClient_Classic18_withDelegateAsyncEPKcU13block_pointerFvP16_CFURLConnectionPK33CFURLConnectionClientCurrent_VMaxE_block_invoke_2 (in CFNetwork)
10libdispatch
__dispatch_client_callout (in libdispatch.dylib)
11libdispatch
__dispatch_block_invoke_direct$VARIANT$mp (in libdispatch.dylib)
12CFNetwork
RunloopBlockContext::_invoke_block(void const*, void*) (in CFNetwork)
13CoreFoundation
_CFArrayApplyFunction (in CoreFoundation)
14CFNetwork
RunloopBlockContext::perform() (in CFNetwork)
15CFNetwork
MultiplexerSource::perform() (in CFNetwork)
16CFNetwork
MultiplexerSource::_perform(void*) (in CFNetwork)
17CoreFoundation
___CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ (in CoreFoundation)
18CoreFoundation
___CFRunLoopDoSource0 (in CoreFoundation)
19CoreFoundation
___CFRunLoopDoSources0 (in CoreFoundation)
20CoreFoundation
___CFRunLoopRun (in CoreFoundation)
21CoreFoundation
_CFRunLoopRunSpecific (in CoreFoundation)
22GraphicsServices
_GSEventRunModal (in GraphicsServices)
23UIKitCore
_UIApplicationMain (in UIKitCore)
24News
main (in News) main.m   line：19
25libdyld
_start (in libdyld.dylib)

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