EDN Admin
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Hi,
My application got hung randomly. The callstack looks quite wired.
Among all these methods, the method DoCleanupWithGcProtection looks quite strange because this is a worker thread created by us. Anyone know the purpose of DoCleanupWithGcProtection ?0:014> !dumpstack
OS Thread Id: 0x8c8 (14)
Current frame: ntdll!NtWaitForMultipleObjects+0x15
ChildEBP RetAddr Caller,Callee
1835e2d0 752015e9 KERNELBASE!WaitForMultipleObjectsEx+0x100, calling ntdll!ZwWaitForMultipleObjects
1835e324 752015e9 KERNELBASE!WaitForMultipleObjectsEx+0x100, calling ntdll!ZwWaitForMultipleObjects
1835e334 755506eb user32!_PeekMessage+0x88, calling user32!NtUserPeekMessage
1835e36c 76b31a2c kernel32!WaitForMultipleObjectsExImplementation+0xe0, calling KERNELBASE!WaitForMultipleObjectsEx
1835e39c 7582cf85 ole32!CCliModalLoop::MyPeekMessage+0xd0 [d:w7rtmcomole32comdcomremcallctrl.cxx:1778], calling ole32!__SEH_epilog4 [d:winmainminkernelcrtscrtw32misci386sehprolg4.asm:116]
1835e3b4 7555086a user32!RealMsgWaitForMultipleObjectsEx+0x14d, calling kernel32!WaitForMultipleObjectsExImplementation
1835e408 75832bf1 ole32!CCliModalLoop::BlockFn+0xa1 [d:w7rtmcomole32comdcomremcallctrl.cxx:1222], calling user32!MsgWaitForMultipleObjectsEx
1835e434 75832d31 ole32!ModalLoop+0x5b [d:w7rtmcomole32comdcomremchancont.cxx:211], calling ole32!CCliModalLoop::BlockFn [d:w7rtmcomole32comdcomremcallctrl.cxx:1095]
1835e45c 7582d54f ole32!SwitchSTA+0x21 [d:w7rtmcomole32comdcomremchancont.cxx:252], calling ole32!ModalLoop [d:w7rtmcomole32comdcomremchancont.cxx:178]
1835e46c 7594a7c9 ole32!CRpcChannelBuffer::SwitchAptAndDispatchCall+0x135 [d:w7rtmcomole32comdcomremchannelb.cxx:4413], calling ole32!SwitchSTA [d:w7rtmcomole32comdcomremchancont.cxx:235]
1835e49c 7594cef0 ole32!CRpcChannelBuffer::SendReceive2+0xef [d:w7rtmcomole32comdcomremchannelb.cxx:4076], calling ole32!CRpcChannelBuffer::SwitchAptAndDispatchCall [d:w7rtmcomole32comdcomremchannelb.cxx:4294]
1835e4b8 752015e9 KERNELBASE!WaitForMultipleObjectsEx+0x100, calling ntdll!ZwWaitForMultipleObjects
1835e4f8 7742e36c ntdll!RtlpLowFragHeapAllocFromContext+0xaec, calling ntdll!_SEH_epilog4
1835e4fc 7742e0d2 ntdll!RtlAllocateHeap+0x206, calling ntdll!RtlpLowFragHeapAllocFromContext
1835e530 75849ba1 ole32!CClientCall::AddRef+0x16 [d:w7rtmcomole32comdcomremcall.cxx:1881], calling KERNELBASE!InterlockedIncrement
1835e57c 75832cba ole32!CCliModalLoop::SendReceive+0x1e [d:w7rtmcomole32comdcomremcallctrl.cxx:899]
1835e598 75849aa1 ole32!CAptRpcChnl::SendReceive+0x73 [d:w7rtmcomole32comdcomremcallctrl.cxx:583], calling ole32!CCliModalLoop::SendReceive [d:w7rtmcomole32comdcomremcallctrl.cxx:891]
1835e614 7582792b ole32!CCtxComChnl::SendReceive+0x95 [d:w7rtmcomole32comdcomremctxchnl.cxx:679], calling ole32!CAptRpcChnl::SendReceive [d:w7rtmcomole32comdcomremcallctrl.cxx:561]
1835e668 7594ce06 ole32!NdrExtpProxySendReceive+0x49 [d:w7rtmcomrpcndroleproxy.cxx:1932]
1835e684 7527414b rpcrt4!NdrpProxySendReceive+0xe
1835e690 752f0149 rpcrt4!NdrClientCall2+0x1a6
1835e6c8 75868e72 ole32!NdrpOleAllocate [d:w7rtmcomrpcndroleoleaux.cxx:612]
1835e6e8 76d87fb3 oleaut32!Variant_ValidateBuffer+0x34e, calling oleaut32!SafeBuffer::Increment
1835e74c 7525ffda rpcrt4!LRPC_BIND_CCALL::BasePrepareCallForCaching+0x44, calling rpcrt4!LogEvent
1835e760 752578df rpcrt4!LRPC_BASE_BINDING_HANDLE::FreeCallToCache+0x26, calling KERNELBASE!InterlockedCompareExchange
1835e788 75867d36 ole32!InterlockedDecRefCnt+0x44 [d:w7rtmcomole32comincrefcnt.cxx:102], calling KERNELBASE!InterlockedCompareExchange
1835e798 7585eb7f ole32!COleStaticMutexSem::Request+0x39 [d:w7rtmcomole32commonolesem.cxx:177]
1835e7a0 7586907f ole32!CAsyncCall::Release+0x17 [d:w7rtmcomole32comdcomremcall.cxx:881], calling KERNELBASE!InterlockedDecrement
1835e7b0 7586907f ole32!CAsyncCall::Release+0x17 [d:w7rtmcomole32comdcomremcall.cxx:881], calling KERNELBASE!InterlockedDecrement
1835e7c4 7594d1e0 ole32!CRpcChannelBuffer::FreeBuffer+0x65 [d:w7rtmcomole32comdcomremchannelb.cxx:2228]
1835e838 75274184 rpcrt4!NdrpProxyGetBuffer
1835e83c 7527413d rpcrt4!NdrpProxySendReceive
1835e8b0 7742e003 ntdll!RtlFreeHeap+0x105, calling ntdll!RtlpLowFragHeapFree
1835e8b4 75868e72 ole32!NdrpOleAllocate [d:w7rtmcomrpcndroleoleaux.cxx:612]
1835e8b8 758683b2 ole32!NdrpOleFree [d:w7rtmcomrpcndroleoleaux.cxx:636]
1835e8c8 76b314dd kernel32!HeapFree+0x14, calling ntdll!RtlFreeHeap
1835e9d4 75274184 rpcrt4!NdrpProxyGetBuffer
1835e9d8 7527413d rpcrt4!NdrpProxySendReceive
1835ea38 75832623 ole32!CPSHashTable::Compare+0xd [d:w7rtmcomole32comdcomrempstable.cxx:2443], calling ole32!CPolicySet::HashChainToPolicySet [d:w7rtmcomole32comdcomrempstable.hxx:226]
1835ea44 7585a144 ole32!CHashTable::Lookup+0x30 [d:w7rtmcomole32comdcomremhash.cxx:198]
1835ea68 758270ce ole32!CPSHashTable::Lookup+0x25 [d:w7rtmcomole32comdcomrempstable.hxx:319], calling ole32!CPolicySet::HashChainToPolicySet [d:w7rtmcomole32comdcomrempstable.hxx:226]
1835ea78 7585a3a2 ole32!CRWLock::ReleaseReaderLock+0x90 [o:w7rtm.obj.x86frecomole32commondaytonaobjfrei386rwlock_ole32.cxx:3798], calling KERNELBASE!InterlockedCompareExchange
1835eaa4 7594c8e2 ole32!ObjectStublessClient+0xa2 [d:w7rtmcomrpcndrolei386stblsclt.cxx:474], calling rpcrt4!NdrClientCall2
1835eac4 758498ad ole32!ObjectStubless+0xf [d:w7rtmcomrpcndrolei386stubless.asm:154], calling ole32!ObjectStublessClient [d:w7rtmcomrpcndrolei386stblsclt.cxx:389]
1835ead4 7582805c ole32!CObjectContext::InternalContextCallback+0x128 [d:w7rtmcomole32comdcomremcontext.cxx:4299]
1835eb5c 7581d4b4 ole32!CObjectContext::ContextCallback+0x92 [d:w7rtmcomole32comdcomremcontext.cxx:4184]
1835ebac 71d2b77b mscorwks!CtxEntry::EnterContextOle32BugAware+0x2b
1835ebf8 71d2c34b mscorwks!CtxEntry::EnterContext+0x325, calling mscorwks!CtxEntry::EnterContextOle32BugAware
1835ec24 71c87ed7 mscorwks!ReleaseTransitionHelper+0x14b, calling mscorwks!_SEH_epilog4
1835ec3c 71b3535b mscorwks!Thread::EnterRuntimeNoThrow+0xad, calling ntdll!RtlSetLastWin32Error
1835ec54 71b353a2 mscorwks!Thread::LeaveRuntimeNoThrow+0xd7, calling mscorwks!_EH_epilog3
1835ec6c 71b35380 mscorwks!Thread::EnterRuntime+0x1f, calling ntdll!RtlSetLastWin32Error
1835ece8 71c87fe5 mscorwks!SafeRelease+0x44, calling mscorwks!_EH_epilog3
1835ed18 71d2b89d mscorwks!IUnkEntry::MarshalIUnknownToStreamCallback2+0x3c, calling mscorwks!CtxEntry::EnterContext
1835ed2c 71d2ba84 mscorwks!IUnkEntry::UnmarshalIUnknownForCurrContextHelper+0x43, calling mscorwks!IUnkEntry::MarshalIUnknownToStreamCallback2
1835ed5c 71b399ec mscorwks!Thread::EnablePreemptiveGC+0xf, calling mscorwks!Thread::CatchAtSafePoint
1835ed74 71d2befe mscorwks!IUnkEntry::UnmarshalIUnknownForCurrContext+0x1cb, calling mscorwks!IUnkEntry::UnmarshalIUnknownForCurrContextHelper
1835edb8 71d2c058 mscorwks!IUnkEntry::GetIUnknownForCurrContext+0x31, calling mscorwks!IUnkEntry::UnmarshalIUnknownForCurrContext
1835edc4 71bdcb99 mscorwks!RCW::SafeQueryInterfaceRemoteAware+0x16, calling mscorwks!IUnkEntry::GetIUnknownForCurrContext
1835edd8 71c97c78 mscorwks!GetFastContextCookie+0x1b, calling ole32!CoGetContextToken [d:w7rtmcomole32comdcomremcoapi.cxx:1858]
1835edf0 71bd9d74 mscorwks!RCW::GetComIPForMethodTableFromCache+0x6b, calling mscorwks!RCW::SafeQueryInterfaceRemoteAware
1835ee34 71bd9dca mscorwks!RCW::GetComIPFromRCW+0x25, calling mscorwks!RCW::GetComIPForMethodTableFromCache
1835ee44 71bd9e0e mscorwks!ComObject::GetComIPFromRCW+0x40, calling mscorwks!RCW::GetComIPFromRCW
1835ee84 71bda1b0 mscorwks!ComObject::GetComIPFromRCWEx+0x66, calling mscorwks!ComObject::GetComIPFromRCW
1835eec8 71b494d7 mscorwks!StackingAllocator::Collapse+0x1e, calling mscorwks!StackingAllocator::Clear
1835eeec 71be24e6 mscorwks!ComObject::StaticGetComIPFromRCWEx+0x50, calling mscorwks!ComObject::GetComIPFromRCWEx
1835ef38 04774d22 04774d22, calling mscorwks!ComObject::StaticGetComIPFromRCWEx
1835efd8 71b494d7 mscorwks!StackingAllocator::Collapse+0x1e, calling mscorwks!StackingAllocator::Clear
1835eff4 71b92b57 mscorwks!DoCleanupWithGcProtection+0xa6, calling mscorwks!_EH_epilog3
1835f050 71b92b57 mscorwks!DoCleanupWithGcProtection+0xa6, calling mscorwks!_EH_epilog3
1835f054 04774b22 04774b22, calling mscorwks!DoCleanupWithGcProtection
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My application got hung randomly. The callstack looks quite wired.
Among all these methods, the method DoCleanupWithGcProtection looks quite strange because this is a worker thread created by us. Anyone know the purpose of DoCleanupWithGcProtection ?0:014> !dumpstack
OS Thread Id: 0x8c8 (14)
Current frame: ntdll!NtWaitForMultipleObjects+0x15
ChildEBP RetAddr Caller,Callee
1835e2d0 752015e9 KERNELBASE!WaitForMultipleObjectsEx+0x100, calling ntdll!ZwWaitForMultipleObjects
1835e324 752015e9 KERNELBASE!WaitForMultipleObjectsEx+0x100, calling ntdll!ZwWaitForMultipleObjects
1835e334 755506eb user32!_PeekMessage+0x88, calling user32!NtUserPeekMessage
1835e36c 76b31a2c kernel32!WaitForMultipleObjectsExImplementation+0xe0, calling KERNELBASE!WaitForMultipleObjectsEx
1835e39c 7582cf85 ole32!CCliModalLoop::MyPeekMessage+0xd0 [d:w7rtmcomole32comdcomremcallctrl.cxx:1778], calling ole32!__SEH_epilog4 [d:winmainminkernelcrtscrtw32misci386sehprolg4.asm:116]
1835e3b4 7555086a user32!RealMsgWaitForMultipleObjectsEx+0x14d, calling kernel32!WaitForMultipleObjectsExImplementation
1835e408 75832bf1 ole32!CCliModalLoop::BlockFn+0xa1 [d:w7rtmcomole32comdcomremcallctrl.cxx:1222], calling user32!MsgWaitForMultipleObjectsEx
1835e434 75832d31 ole32!ModalLoop+0x5b [d:w7rtmcomole32comdcomremchancont.cxx:211], calling ole32!CCliModalLoop::BlockFn [d:w7rtmcomole32comdcomremcallctrl.cxx:1095]
1835e45c 7582d54f ole32!SwitchSTA+0x21 [d:w7rtmcomole32comdcomremchancont.cxx:252], calling ole32!ModalLoop [d:w7rtmcomole32comdcomremchancont.cxx:178]
1835e46c 7594a7c9 ole32!CRpcChannelBuffer::SwitchAptAndDispatchCall+0x135 [d:w7rtmcomole32comdcomremchannelb.cxx:4413], calling ole32!SwitchSTA [d:w7rtmcomole32comdcomremchancont.cxx:235]
1835e49c 7594cef0 ole32!CRpcChannelBuffer::SendReceive2+0xef [d:w7rtmcomole32comdcomremchannelb.cxx:4076], calling ole32!CRpcChannelBuffer::SwitchAptAndDispatchCall [d:w7rtmcomole32comdcomremchannelb.cxx:4294]
1835e4b8 752015e9 KERNELBASE!WaitForMultipleObjectsEx+0x100, calling ntdll!ZwWaitForMultipleObjects
1835e4f8 7742e36c ntdll!RtlpLowFragHeapAllocFromContext+0xaec, calling ntdll!_SEH_epilog4
1835e4fc 7742e0d2 ntdll!RtlAllocateHeap+0x206, calling ntdll!RtlpLowFragHeapAllocFromContext
1835e530 75849ba1 ole32!CClientCall::AddRef+0x16 [d:w7rtmcomole32comdcomremcall.cxx:1881], calling KERNELBASE!InterlockedIncrement
1835e57c 75832cba ole32!CCliModalLoop::SendReceive+0x1e [d:w7rtmcomole32comdcomremcallctrl.cxx:899]
1835e598 75849aa1 ole32!CAptRpcChnl::SendReceive+0x73 [d:w7rtmcomole32comdcomremcallctrl.cxx:583], calling ole32!CCliModalLoop::SendReceive [d:w7rtmcomole32comdcomremcallctrl.cxx:891]
1835e614 7582792b ole32!CCtxComChnl::SendReceive+0x95 [d:w7rtmcomole32comdcomremctxchnl.cxx:679], calling ole32!CAptRpcChnl::SendReceive [d:w7rtmcomole32comdcomremcallctrl.cxx:561]
1835e668 7594ce06 ole32!NdrExtpProxySendReceive+0x49 [d:w7rtmcomrpcndroleproxy.cxx:1932]
1835e684 7527414b rpcrt4!NdrpProxySendReceive+0xe
1835e690 752f0149 rpcrt4!NdrClientCall2+0x1a6
1835e6c8 75868e72 ole32!NdrpOleAllocate [d:w7rtmcomrpcndroleoleaux.cxx:612]
1835e6e8 76d87fb3 oleaut32!Variant_ValidateBuffer+0x34e, calling oleaut32!SafeBuffer::Increment
1835e74c 7525ffda rpcrt4!LRPC_BIND_CCALL::BasePrepareCallForCaching+0x44, calling rpcrt4!LogEvent
1835e760 752578df rpcrt4!LRPC_BASE_BINDING_HANDLE::FreeCallToCache+0x26, calling KERNELBASE!InterlockedCompareExchange
1835e788 75867d36 ole32!InterlockedDecRefCnt+0x44 [d:w7rtmcomole32comincrefcnt.cxx:102], calling KERNELBASE!InterlockedCompareExchange
1835e798 7585eb7f ole32!COleStaticMutexSem::Request+0x39 [d:w7rtmcomole32commonolesem.cxx:177]
1835e7a0 7586907f ole32!CAsyncCall::Release+0x17 [d:w7rtmcomole32comdcomremcall.cxx:881], calling KERNELBASE!InterlockedDecrement
1835e7b0 7586907f ole32!CAsyncCall::Release+0x17 [d:w7rtmcomole32comdcomremcall.cxx:881], calling KERNELBASE!InterlockedDecrement
1835e7c4 7594d1e0 ole32!CRpcChannelBuffer::FreeBuffer+0x65 [d:w7rtmcomole32comdcomremchannelb.cxx:2228]
1835e838 75274184 rpcrt4!NdrpProxyGetBuffer
1835e83c 7527413d rpcrt4!NdrpProxySendReceive
1835e8b0 7742e003 ntdll!RtlFreeHeap+0x105, calling ntdll!RtlpLowFragHeapFree
1835e8b4 75868e72 ole32!NdrpOleAllocate [d:w7rtmcomrpcndroleoleaux.cxx:612]
1835e8b8 758683b2 ole32!NdrpOleFree [d:w7rtmcomrpcndroleoleaux.cxx:636]
1835e8c8 76b314dd kernel32!HeapFree+0x14, calling ntdll!RtlFreeHeap
1835e9d4 75274184 rpcrt4!NdrpProxyGetBuffer
1835e9d8 7527413d rpcrt4!NdrpProxySendReceive
1835ea38 75832623 ole32!CPSHashTable::Compare+0xd [d:w7rtmcomole32comdcomrempstable.cxx:2443], calling ole32!CPolicySet::HashChainToPolicySet [d:w7rtmcomole32comdcomrempstable.hxx:226]
1835ea44 7585a144 ole32!CHashTable::Lookup+0x30 [d:w7rtmcomole32comdcomremhash.cxx:198]
1835ea68 758270ce ole32!CPSHashTable::Lookup+0x25 [d:w7rtmcomole32comdcomrempstable.hxx:319], calling ole32!CPolicySet::HashChainToPolicySet [d:w7rtmcomole32comdcomrempstable.hxx:226]
1835ea78 7585a3a2 ole32!CRWLock::ReleaseReaderLock+0x90 [o:w7rtm.obj.x86frecomole32commondaytonaobjfrei386rwlock_ole32.cxx:3798], calling KERNELBASE!InterlockedCompareExchange
1835eaa4 7594c8e2 ole32!ObjectStublessClient+0xa2 [d:w7rtmcomrpcndrolei386stblsclt.cxx:474], calling rpcrt4!NdrClientCall2
1835eac4 758498ad ole32!ObjectStubless+0xf [d:w7rtmcomrpcndrolei386stubless.asm:154], calling ole32!ObjectStublessClient [d:w7rtmcomrpcndrolei386stblsclt.cxx:389]
1835ead4 7582805c ole32!CObjectContext::InternalContextCallback+0x128 [d:w7rtmcomole32comdcomremcontext.cxx:4299]
1835eb5c 7581d4b4 ole32!CObjectContext::ContextCallback+0x92 [d:w7rtmcomole32comdcomremcontext.cxx:4184]
1835ebac 71d2b77b mscorwks!CtxEntry::EnterContextOle32BugAware+0x2b
1835ebf8 71d2c34b mscorwks!CtxEntry::EnterContext+0x325, calling mscorwks!CtxEntry::EnterContextOle32BugAware
1835ec24 71c87ed7 mscorwks!ReleaseTransitionHelper+0x14b, calling mscorwks!_SEH_epilog4
1835ec3c 71b3535b mscorwks!Thread::EnterRuntimeNoThrow+0xad, calling ntdll!RtlSetLastWin32Error
1835ec54 71b353a2 mscorwks!Thread::LeaveRuntimeNoThrow+0xd7, calling mscorwks!_EH_epilog3
1835ec6c 71b35380 mscorwks!Thread::EnterRuntime+0x1f, calling ntdll!RtlSetLastWin32Error
1835ece8 71c87fe5 mscorwks!SafeRelease+0x44, calling mscorwks!_EH_epilog3
1835ed18 71d2b89d mscorwks!IUnkEntry::MarshalIUnknownToStreamCallback2+0x3c, calling mscorwks!CtxEntry::EnterContext
1835ed2c 71d2ba84 mscorwks!IUnkEntry::UnmarshalIUnknownForCurrContextHelper+0x43, calling mscorwks!IUnkEntry::MarshalIUnknownToStreamCallback2
1835ed5c 71b399ec mscorwks!Thread::EnablePreemptiveGC+0xf, calling mscorwks!Thread::CatchAtSafePoint
1835ed74 71d2befe mscorwks!IUnkEntry::UnmarshalIUnknownForCurrContext+0x1cb, calling mscorwks!IUnkEntry::UnmarshalIUnknownForCurrContextHelper
1835edb8 71d2c058 mscorwks!IUnkEntry::GetIUnknownForCurrContext+0x31, calling mscorwks!IUnkEntry::UnmarshalIUnknownForCurrContext
1835edc4 71bdcb99 mscorwks!RCW::SafeQueryInterfaceRemoteAware+0x16, calling mscorwks!IUnkEntry::GetIUnknownForCurrContext
1835edd8 71c97c78 mscorwks!GetFastContextCookie+0x1b, calling ole32!CoGetContextToken [d:w7rtmcomole32comdcomremcoapi.cxx:1858]
1835edf0 71bd9d74 mscorwks!RCW::GetComIPForMethodTableFromCache+0x6b, calling mscorwks!RCW::SafeQueryInterfaceRemoteAware
1835ee34 71bd9dca mscorwks!RCW::GetComIPFromRCW+0x25, calling mscorwks!RCW::GetComIPForMethodTableFromCache
1835ee44 71bd9e0e mscorwks!ComObject::GetComIPFromRCW+0x40, calling mscorwks!RCW::GetComIPFromRCW
1835ee84 71bda1b0 mscorwks!ComObject::GetComIPFromRCWEx+0x66, calling mscorwks!ComObject::GetComIPFromRCW
1835eec8 71b494d7 mscorwks!StackingAllocator::Collapse+0x1e, calling mscorwks!StackingAllocator::Clear
1835eeec 71be24e6 mscorwks!ComObject::StaticGetComIPFromRCWEx+0x50, calling mscorwks!ComObject::GetComIPFromRCWEx
1835ef38 04774d22 04774d22, calling mscorwks!ComObject::StaticGetComIPFromRCWEx
1835efd8 71b494d7 mscorwks!StackingAllocator::Collapse+0x1e, calling mscorwks!StackingAllocator::Clear
1835eff4 71b92b57 mscorwks!DoCleanupWithGcProtection+0xa6, calling mscorwks!_EH_epilog3
1835f050 71b92b57 mscorwks!DoCleanupWithGcProtection+0xa6, calling mscorwks!_EH_epilog3
1835f054 04774b22 04774b22, calling mscorwks!DoCleanupWithGcProtection
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