[Webkit-unassigned] [Bug 232096] New: No data while reading stdout for the server process

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=232096

            Bug ID: 232096
           Summary: No data while reading stdout for the server process
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ehutchison at apple.com

Numerous tests crashing with message in STDIO stating: "This test marked as a crash because of no data while reading stdout for the server process."

imported/w3c/web-platform-tests/websockets/unload-a-document/003.html
imported/w3c/web-platform-tests/websockets/constructor/021.html

...and others

are flaky crashes on iOS15 EWS.

History: https://results.webkit.org/?platform=ios&suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fwebsockets%2Fconstructor%2F021.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fwebsockets%2Funload-a-document%2F003.html

Build: https://ews-build.webkit.org/#/builders/68/builds/112

Results: https://ews-build.s3-us-west-2.amazonaws.com/iOS-15-Simulator-WK2-Tests-EWS/r441942-112-rerun/results.html, https://ews-build.s3-us-west-2.amazonaws.com/iOS-15-Simulator-WK2-Tests-EWS/r441942-112/results.html

Diff: STDIO: https://ews-build.webkit.org/api/v2/logs/15203849/raw, https://ews-build.webkit.org/api/v2/logs/15205681/raw

04:43:49.679 649 worker/2 imported/w3c/web-platform-tests/websockets/constructor/020.html passed
04:43:49.680 649 worker/2 com.apple.WebKit.Networking.Development crash, pid = 3610

04:43:49.924 649 worker/2 This test marked as a crash because of no data while reading stdout for the server process.
04:43:49.924 649 worker/2 This test marked as a crash because of no data while reading stdout for the server process.

04:44:25.007 649 worker/2 worker/2 imported/w3c/web-platform-tests/websockets/constructor/021.html crashed, (no stderr)
04:44:25.008 649 [43170/51460] imported/w3c/web-platform-tests/websockets/constructor/021.html failed unexpectedly (com.apple.WebKit.Networking.Development crashed [pid=3610])
04:44:25.008 649 worker/2 killing driver

04:58:59.852 649 finished test group

04:59:00.388 649 worker/0 imported/w3c/web-platform-tests/websockets/constructor/021.html output stderr lines:
04:59:00.388 649   CONSOLE MESSAGE: Wrong protocol for WebSocket 'foobar, foobar'
04:59:00.390 649 
04:59:00.390 649 imported/w3c/web-platform-tests/websockets/constructor/021.html passed
04:59:00.390 649 finished test group04:44:25.007 649 worker/2 worker/2 imported/w3c/web-platform-tests/websockets/constructor/021.html crashed, (no stderr)


06:16:18.405 13929 worker/4 com.apple.WebKit.Networking.Development crash, pid = 22100
06:16:18.507 13929 worker/4 This test marked as a crash because of no data while reading stdout for the server process.
06:16:18.508 13929 worker/4 This test marked as a crash because of no data while reading stdout for the server process.

06:16:34.559 13929 worker/4 worker/4 imported/w3c/web-platform-tests/websockets/unload-a-document/003.html crashed, (no stderr)
06:16:34.566 13929 [43114/51460] imported/w3c/web-platform-tests/websockets/unload-a-document/003.html failed unexpectedly (com.apple.WebKit.Networking.Development crashed [pid=22100])
06:16:34.566 13929 worker/4 killing driver

06:16:36.018 13929 worker/4 imported/w3c/web-platform-tests/websockets/unload-a-document/003.html failed:
06:16:36.019 13929 worker/4 com.apple.WebKit.Networking.Development crashed [pid=22100]

06:16:36.627 13929 worker/4 "xcrun simctl launch 95DD5F27-6A7E-49B8-957B-6DE0718848D5 org.webkit.WebKitTestRunnerApp -" took 0.60s
06:16:36.627 13929 worker/4 Returning pid 24043 of launched process

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