[Webkit-unassigned] [Bug 238234] New: REGRESSION: [iOS] ASSERTION FAILED: Completion handler should always be called under WebKit::NetworkProcess::prepareToSuspend()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=238234

            Bug ID: 238234
           Summary: REGRESSION: [iOS] ASSERTION FAILED: Completion handler
                    should always be called under
                    WebKit::NetworkProcess::prepareToSuspend()
           Product: WebKit
           Version: Safari 13
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ryanhaddad at apple.com

Created attachment 455447

  --> https://bugs.webkit.org/attachment.cgi?id=455447&action=review

crash log

Layout tests are exiting early on iOS debug bots with crashes, all appear to be the following assert:

ASSERTION FAILED: Completion handler should always be called
!m_function
/Volumes/Data/worker/ios-simulator-15-debug/build/WebKitBuild/Debug-iphonesimulator/usr/local/include/wtf/CompletionHandler.h(59) : WTF::CompletionHandler<void ()>::~CompletionHandler()
1   0x119499169 WTFCrash
2   0x127b10da7 WTF::CompletionHandler<void ()>::~CompletionHandler()
3   0x127b0f275 WTF::CompletionHandler<void ()>::~CompletionHandler()
4   0x1289e0ca9 auto WebKit::NetworkProcess::prepareToSuspend(bool, WTF::CompletionHandler<void ()>&&)::$_63::operator()<WebKit::NetworkSession>(WebKit::NetworkSession&) const
5   0x1289e0b31 WTF::Detail::CallableWrapper<WebKit::NetworkProcess::prepareToSuspend(bool, WTF::CompletionHandler<void ()>&&)::$_63, void, WebKit::NetworkSession&>::call(WebKit::NetworkSession&)
6   0x12895e307 WTF::Function<void (WebKit::NetworkSession&)>::operator()(WebKit::NetworkSession&) const
7   0x12895be59 WebKit::NetworkProcess::forEachNetworkSession(WTF::Function<void (WebKit::NetworkSession&)> const&)
8   0x1289685ad WebKit::NetworkProcess::prepareToSuspend(bool, WTF::CompletionHandler<void ()>&&)
9   0x127de3852 void IPC::callMemberFunctionImpl<WebKit::NetworkProcess, void (WebKit::NetworkProcess::*)(bool, WTF::CompletionHandler<void ()>&&), void (), std::__1::tuple<bool>, 0ul>(WebKit::NetworkProcess*, void (WebKit::NetworkProcess::*)(bool, WTF::CompletionHandler<void ()>&&), WTF::CompletionHandler<void ()>&&, std::__1::tuple<bool>&&, std::__1::integer_sequence<unsigned long, 0ul>)
10  0x127de2de2 void IPC::callMemberFunction<WebKit::NetworkProcess, void (WebKit::NetworkProcess::*)(bool, WTF::CompletionHandler<void ()>&&), void (), std::__1::tuple<bool>, std::__1::integer_sequence<unsigned long, 0ul> >(std::__1::tuple<bool>&&, WTF::CompletionHandler<void ()>&&, WebKit::NetworkProcess*, void (WebKit::NetworkProcess::*)(bool, WTF::CompletionHandler<void ()>&&))
11  0x127d828d9 void IPC::handleMessageAsync<Messages::NetworkProcess::PrepareToSuspend, WebKit::NetworkProcess, void (WebKit::NetworkProcess::*)(bool, WTF::CompletionHandler<void ()>&&)>(IPC::Connection&, IPC::Decoder&, WebKit::NetworkProcess*, void (WebKit::NetworkProcess::*)(bool, WTF::CompletionHandler<void ()>&&))
12  0x127d7d8a5 WebKit::NetworkProcess::didReceiveNetworkProcessMessage(IPC::Connection&, IPC::Decoder&)
13  0x12895baae WebKit::NetworkProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&)


https://build.webkit.org/results/Apple-iOS-15-Simulator-Debug-WK2-Tests/r291624%20(2030)/results.html

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