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number of successful test cases in which p is covered number of failing test cases in which p is covered number of successful tests in which the context of p was covered number of failing tests in which the context of p was covered

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Root cause

Old version New version Root cause

Failing test case Passing test case generated by Darwin Old New

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Has this or similar bug been looked at or fixed before? What do we know about this kind of bugs? Who should I ask for help? Where should I start looking?

The customer experiences some deadlocks on a server. The problem is random and may occur from several times a week to once a month. The system looks hung because the global resource 'ObpInitKillMutant' is help by a thread which tries to close a file forever. So all the processes having a thread waiting on 'ObpInitKillMutant' stop working fine. Drivers such as TCP/IP continue to respond normally but it's impossible to connect to any share. 0: kd> !thread ChildEBP RetAddr Args to Child 80c7a ntkrnlmp!IopAcquireFileObjectLock+0x58 82a6d7a0 80c7a ntkrnlmp!IopCloseFile+0x79 82a6d7a0 80c7a010 80f6da40 ntkrnlmp!ObpDecrementHandleCount+0x ffdef ntkrnlmp!NtClose+0x ffdef ntkrnlmp!KiSystemService+0xc c9 ntkrnlmp!ZwClose+0xb c9 e185f ntkrnlmp!ObDestroyHandleProcedure+0xd 809e e4 82a6d926 ntkrnlmp!ExDestroyHandleTable+0x a6d7a0 7ffde000 ntkrnlmp!ObKillProcess+0x a6d7a0 82a6d7f0 ntkrnlmp!PspExitProcess+0x f0941f fa70 ntkrnlmp!PspExitThread+0x447 ffffffff a60 ntkrnlmp!NtTerminateProcess+0x13c ffffffff a60 ntkrnlmp!KiSystemService+0xc NTDLL!NtTerminateProcess+0xb REGISTERS: eax= ebx=e ecx= c edx=e2dddc68

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Code Visualization, UML, and DSLsCameron SkinnerTuesday4:30 PM Extending the Microsoft Visual Studio 2010 Code Editor to Visualize Runtime Intelligence Gabriel Torok & Bill LeachWednesday4:30 PM A Lap Around Microsoft Visual Studio and Team Foundation Server 2010 Cameron Skinner & Mario RodriguezThursday10:00 AM Microsoft Visual Studio Lab Management to the Build Setup RescueVinod MalhotraThursday10:00 AM Scrum in the Enterprise and Process Customization with Microsoft Visual Studio 2010 Simon Bennett & Stuart PrestonThursday1:45 PM Advanced Diagnostics, IntelliTrace™ and Test AutomationHabib HeydarianThursday1:45 PM Power Tools for Debugging Kapil Vaswani & Sandeep KaranthThursday3:00 PM Automating "Done Done" in the Team Workflows with Microsoft Visual Studio Ultimate and Team Foundation Server 2010 Jamie Cool & Brian RandellThursday3:00 PM

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