[Webkit-unassigned] [Bug 198434] New: REGRESSION (r245913) [ Debug ] ASSERTION FAILED: m_swConnectionsByIdentifier.contains(connection.serverConnectionIdentifier()) Layout Test http/wpt/service-workers/update-service-worker.https.html is a flaky crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=198434

            Bug ID: 198434
           Summary: REGRESSION (r245913) [ Debug ] ASSERTION FAILED:
                    m_swConnectionsByIdentifier.contains(connection.server
                    ConnectionIdentifier()) Layout Test
                    http/wpt/service-workers/update-service-worker.https.h
                    tml is a flaky crash
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sroberts at apple.com

The following layout test is flaky on Mac WK2 iOS Simulator Debug

http/wpt/service-workers/update-service-worker.https.html

Probable cause:

Test originally started crashing after r245873 and affected all testers Release and Debug. After r245913 (which fixed release builds) it is crashing with a different Assertion just on Debug builds. I cannot reproduce it on Release builds. The way to reproduce the failure remains the same.

run-webkit-tests http/wpt/service-workers/service-worker-networkprocess-crash.html http/wpt/service-workers/update-service-worker.https.html --child-process 1 --iter 50 --exit-after-n-crashes=1 --ios-simulator --debug

Usually crashes within 5 runs.

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Fwpt%2Fservice-workers%2Fupdate-service-worker.https.html

https://build.webkit.org/results/Apple%20iOS%2012%20Simulator%20Debug%20WK2%20(Tests)/r245973%20(3961)/http/wpt/service-workers/update-service-worker.https-stderr.txt

ASSERTION FAILED: m_swConnectionsByIdentifier.contains(connection.serverConnectionIdentifier())
/Volumes/Data/worker/trunk-peacee-ios-sim-debug-archive/build/OpenSource/Source/WebKit/WebProcess/Network/NetworkProcessConnection.cpp(270) : void WebKit::NetworkProcessConnection::removeSWClientConnection(WebKit::WebSWClientConnection &)
1   0x5a321c659 WTFCrash
2   0x101d9783b WTFCrashWithInfo(int, char const*, char const*, int)
3   0x102cc5165 WebKit::NetworkProcessConnection::removeSWClientConnection(WebKit::WebSWClientConnection&)
4   0x102d2eab3 WebKit::WebSWClientConnection::~WebSWClientConnection()
5   0x102d2ec05 WebKit::WebSWClientConnection::~WebSWClientConnection()
6   0x102d2ec69 WebKit::WebSWClientConnection::~WebSWClientConnection()

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