[Webkit-unassigned] [Bug 183423] New: Layout Test webrtc/datachannel/basic-tcp.html is flaky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=183423

            Bug ID: 183423
           Summary: Layout Test webrtc/datachannel/basic-tcp.html is flaky
           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: jlewis3 at apple.com
                CC: jbedard at apple.com, ryanhaddad at apple.com,
                    youennf at gmail.com

Created attachment 335245

  --> https://bugs.webkit.org/attachment.cgi?id=335245&action=review

crash-log

The following layout test is flaky on macOS Debug WK2

webrtc/datachannel/basic-tcp.html

The test is showing up as an invalid crash in com.apple.WebKit.Networking.Development however the bots are stating there is no crash.

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=webrtc%2Fdatachannel%2Fbasic-tcp.html


I got a log from one of the bots:

Thread 5 Crashed:: com.apple.NSURLConnectionLoader
0   libobjc.A.dylib                     0x00007fffa920901d objc_msgSend + 29
1   com.apple.Foundation                0x7fff957d3716 +[NSConcreteNotification newTempNotificationWithName:object:userInfo:] + 123 (/Library/Caches/com.apple.xbs/Sources/Foundation/Foundation-1349.91/Misc.subproj/NSNotification.m:211)
2   com.apple.Foundation                0x7fff957d365f -[NSNotificationCenter postNotificationName:object:userInfo:] + 42 (/Library/Caches/com.apple.xbs/Sources/Foundation/Foundation-1349.91/Misc.subproj/NSNotification.m:499)
3   com.apple.CoreFoundation            0x7fff93dde3e1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 (~rc/Software/SUFujiSecChipmunk/Projects/CF/CF-1349.90/RunLoop.subproj/CFRunLoop.c:1943)
4   com.apple.CoreFoundation            0x7fff93dbf65c __CFRunLoopDoSources0 + 556 (~rc/Software/SUFujiSecChipmunk/Projects/CF/CF-1349.90/RunLoop.subproj/CFRunLoop.c:1989)
5   com.apple.CoreFoundation            0x7fff93dbeb46 __CFRunLoopRun + 934 (~rc/Software/SUFujiSecChipmunk/Projects/CF/CF-1349.90/RunLoop.subproj/CFRunLoop.c:2821)
6   com.apple.CoreFoundation            0x7fff93dbe544 CFRunLoopRunSpecific + 420 (~rc/Software/SUFujiSecChipmunk/Projects/CF/CF-1349.90/RunLoop.subproj/CFRunLoop.c:3113)
7   com.apple.CFNetwork                 0x7fff92ef9344 +[NSURLConnection(Loader) _resourceLoadLoop:] + 313 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/CFNetwork/CFNetwork-811.8/Foundation/NSURLConnection.mm:364)
8   com.apple.Foundation                0x7fff957ff8ad __NSThread__start__ + 1243 (/Library/Caches/com.apple.xbs/Sources/Foundation/Foundation-1349.91/Soil.subproj/NSThread.m:1163)
9   libsystem_pthread.dylib             0x7fffa9d1193b _pthread_body + 180 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/libpthread/libpthread-218.60.3/src/pthread.c:697)
10  libsystem_pthread.dylib             0x7fffa9d11887 _pthread_start + 286 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/libpthread/libpthread-218.60.3/src/pthread.c:744)
11  libsystem_pthread.dylib             0x00007fffa9d1108d thread_start + 13


Attached the crash log.

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