[Webkit-unassigned] [Bug 109133] New: [WK2] ASSERT_NOT_REACHED in Connection::exceptionSourceEventHandler()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=109133

           Summary: [WK2] ASSERT_NOT_REACHED in
                    Connection::exceptionSourceEventHandler()
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ap at webkit.org
                CC: andersca at apple.com


Bots are frequently hitting this assertion failure, e.g. twice in this run: <http://build.webkit.org/results/Apple%20MountainLion%20Debug%20WK2%20(Tests)/r142064%20(6640)/results.html>.


ERROR: Failed to send message to real exception port. (ipc/send) invalid destination port (10000003)
/Volumes/Data/slave/mountainlion-debug/build/Source/WebKit2/Platform/CoreIPC/mac/ConnectionMac.cpp(461) : void CoreIPC::Connection::exceptionSourceEventHandler()
SHOULD NEVER BE REACHED
/Volumes/Data/slave/mountainlion-debug/build/Source/WebKit2/Platform/CoreIPC/mac/ConnectionMac.cpp(462) : void CoreIPC::Connection::exceptionSourceEventHandler()
1   0x106fd9115 CoreIPC::Connection::exceptionSourceEventHandler()
2   0x106fd02f2 WTF::FunctionWrapper<void (CoreIPC::Connection::*)()>::operator()(CoreIPC::Connection*)
3   0x106fd0275 WTF::BoundFunctionImpl<WTF::FunctionWrapper<void (CoreIPC::Connection::*)()>, void (CoreIPC::Connection*)>::operator()()
4   0x106fda1e5 ___ZNK3WTF8FunctionIFvvEEcvU13block_pointerS1_Ev_block_invoke_0
5   0x7fff900220b6 _dispatch_client_callout
6   0x7fff9002429b _dispatch_source_invoke
7   0x7fff90023305 _dispatch_queue_invoke
8   0x7fff90023448 _dispatch_queue_drain
9   0x7fff900232f1 _dispatch_queue_invoke
10  0x7fff900231c3 _dispatch_worker_thread2
11  0x7fff94590cab _pthread_wqthread
12  0x7fff9457b171 start_wqthread

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