[Webkit-unassigned] [Bug 50722] New: [chromium] DRT inspector layout tests are flaky in debug

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=50722

           Summary: [chromium] DRT inspector layout tests are flaky in
                    debug
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: tony at chromium.org
                CC: pfeldman at chromium.org, tkent at chromium.org


We're getting random crashes in with DRT in debug on the Windows bots in inspector tests.  We didn't have this problem with test_shell.

I've been trying to repro locally and have only gotten one stack trace.  It's not obvious to me what's the cause yet.  Maybe we're running a Task after the page has been unloaded?

Backtrace:
    WebCore::CSSStyleDeclaration::getPropertyValue [0x0195D92C+76] (c:\src\chrome\src\third_party\webkit\webcore\css\cssstyledeclaration.cpp:53)
    WebCore::InspectorStyle::buildObjectForStyle [0x01C83DF7+215] (c:\src\chrome\src\third_party\webkit\webcore\inspector\inspectorstylesheet.cpp:141)
    WebCore::InspectorStyleSheet::buildObjectForStyle [0x01C87D2A+442] (c:\src\chrome\src\third_party\webkit\webcore\inspector\inspectorstylesheet.cpp:739)
    WebCore::InspectorCSSAgent::getStylesForNode2 [0x01ADCDFA+170] (c:\src\chrome\src\third_party\webkit\webcore\inspector\inspectorcssagent.cpp:186)
    WebCore::InspectorBackendDispatcher::getStylesForNode2 [0x023767B7+311] (c:\src\chrome\src\webkit\debug\obj\global_intermediate\webcore\inspectorbackenddispatcher.cpp:1762)
    WebCore::InspectorBackendDispatcher::dispatch [0x0237EDAE+8110] (c:\src\chrome\src\webkit\debug\obj\global_intermediate\webcore\inspectorbackenddispatcher.cpp:2678)
    WebKit::WebDevToolsAgentImpl::dispatchOnInspectorBackend [0x0108AFFD+61] (c:\src\chrome\src\third_party\webkit\webkit\chromium\src\webdevtoolsagentimpl.cpp:241)
    DRTDevToolsAgent::call [0x00BAE56C+60] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\drtdevtoolsagent.cpp:96)
    DRTDevToolsAgent::AsyncCallTask::runIfValid [0x00BAE450+32] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\drtdevtoolsagent.h:88)
    MethodTask<DRTDevToolsAgent>::run [0x00BAEB27+39] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\task.h:72)
    invokeTask [0x00BA8E1C+44] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\task.cpp:61)
    DispatchToFunction<void (__cdecl*)(void *),void *> [0x00F6DE1F+15] (c:\src\chrome\src\base\tuple.h:614)
    RunnableFunction<void (__cdecl*)(void *),Tuple1<void *> >::Run [0x00F6DD2A+42] (c:\src\chrome\src\base\task.h:441)
    MessageLoop::RunTask [0x021ED8C0+272] (c:\src\chrome\src\base\message_loop.cc:423)
    MessageLoop::DeferOrRunPendingTask [0x021ED9F5+53] (c:\src\chrome\src\base\message_loop.cc:435)
    MessageLoop::DoWork [0x021EDF4C+236] (c:\src\chrome\src\base\message_loop.cc:539)
    base::MessagePumpForUI::DoRunLoop [0x02239564+84] (c:\src\chrome\src\base\message_pump_win.cc:201)
    base::MessagePumpWin::RunWithDispatcher [0x02238DB2+130] (c:\src\chrome\src\base\message_pump_win.cc:49)
    base::MessagePumpWin::Run [0x0223901C+28] (c:\src\chrome\src\base\message_pump_win.h:79)
    MessageLoop::RunInternal [0x021ECE76+262] (c:\src\chrome\src\base\message_loop.cc:271)
    MessageLoop::RunHandler [0x021ECC3E+46] (c:\src\chrome\src\base\message_loop.cc:244)
    MessageLoop::Run [0x021ECB2A+58] (c:\src\chrome\src\base\message_loop.cc:222)
    webkit_support::RunMessageLoop [0x00F6B12F+15] (c:\src\chrome\src\webkit\support\webkit_support.cc:328)
    TestShell::waitTestFinished [0x00B7ED9D+141] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\testshellwin.cpp:106)
    TestShell::runFileTest [0x00B9875B+411] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\testshell.cpp:187)
    runTest [0x00BAD21D+621] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\dumprendertree.cpp:92)
    main [0x00BAC9E9+1897] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\dumprendertree.cpp:193)
    __tmainCRTStartup [0x01127073+563] (f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:327)
    mainCRTStartup [0x01126E3D+13] (f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:196)
    BaseThreadInitThunk [0x7675ECCB+14]
    RtlCreateUserProcess [0x774AD24D+140]
    RtlCreateProcessParameters [0x774AD45F+78]

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