[Webkit-unassigned] [Bug 231748] New: [ iOS EWS ] http/tests/privateClickMeasurement/attribution-conversion-through-image-redirect-ephemeral.html is a flaky crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=231748

            Bug ID: 231748
           Summary: [ iOS EWS ]
                    http/tests/privateClickMeasurement/attribution-convers
                    ion-through-image-redirect-ephemeral.html is a flaky
                    crash
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: iPhone / iPad
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ayumi_kojima at apple.com

http/tests/privateClickMeasurement/attribution-conversion-through-image-redirect-ephemeral.html

Is a flaky crash on iOS-14-Simulator-WK2-Tests-EWS.

It doesn't look like the flaky crash is seen on the open source: https://results.webkit.org/?suite=layout-tests&test=http%2Ftests%2FprivateClickMeasurement%2Fattribution-conversion-through-image-redirect-ephemeral.html

It looks like the flaky crash started at this build: https://ews-build.webkit.org/#/builders/51/builds/23024

Result page: https://ews-build.s3-us-west-2.amazonaws.com/iOS-14-Simulator-WK2-Tests-EWS/r441121-23396/results.html

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebKit                    0x0000000108c35813 WTFCrashWithInfo(int, char const*, char const*, int) + 19
1   com.apple.WebKit                    0x0000000108df5d3a WebKit::NetworkSession::setPrivateClickMeasurementAppBundleIDForTesting(WTF::String&&) + 138
2   com.apple.WebKit                    0x0000000108dca3b6 WebKit::NetworkProcess::setPrivateClickMeasurementAppBundleIDForTesting(PAL::SessionID, WTF::String&&, WTF::CompletionHandler<void ()>&&) + 54
3   com.apple.WebKit                    0x0000000108c8f818 void IPC::handleMessageAsync<Messages::NetworkProcess::SetPrivateClickMeasurementAppBundleIDForTesting, WebKit::NetworkProcess, void (WebKit::NetworkProcess::*)(PAL::SessionID, WTF::String&&, WTF::CompletionHandler<void ()>&&)>(IPC::Connection&, IPC::Decoder&, WebKit::NetworkProcess*, void (WebKit::NetworkProcess::*)(PAL::SessionID, WTF::String&&, WTF::CompletionHandler<void ()>&&)) + 187
4   com.apple.WebKit                    0x0000000108c8a28f WebKit::NetworkProcess::didReceiveNetworkProcessMessage(IPC::Connection&, IPC::Decoder&) + 4019
5   com.apple.WebKit                    0x0000000108c50903 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) + 221
6   com.apple.WebKit                    0x0000000108c50b45 IPC::Connection::dispatchOneIncomingMessage() + 169
7   com.apple.JavaScriptCore            0x000000010ad89461 WTF::RunLoop::performWork() + 545
8   com.apple.JavaScriptCore            0x000000010ad89d12 WTF::RunLoop::performWork(void*) + 34
9   com.apple.CoreFoundation            0x00007fff20390ede __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
10  com.apple.CoreFoundation            0x00007fff20390dd6 __CFRunLoopDoSource0 + 180
11  com.apple.CoreFoundation            0x00007fff2039029e __CFRunLoopDoSources0 + 242
12  com.apple.CoreFoundation            0x00007fff2038a9f7 __CFRunLoopRun + 875
13  com.apple.CoreFoundation            0x00007fff2038a1a7 CFRunLoopRunSpecific + 567
14  com.apple.Foundation                0x00007fff20834204 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 209
15  com.apple.Foundation                0x00007fff20834418 -[NSRunLoop(NSRunLoop) run] + 76
16  libxpc.dylib                        0x00007fff2005e1a8 _xpc_objc_main + 591
17  libxpc.dylib                        0x00007fff20060143 xpc_main + 143
18  com.apple.WebKit                    0x0000000108e03eea WebKit::XPCServiceMain(int, char const**) + 87
19  libdyld.dylib                       0x00007fff2025abbd start + 1

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