[Mono-dev] WCF throwing System.NullReferenceException on multithreaded application

Rodrigo Kumpera kumpera at gmail.com
Fri Dec 7 16:10:07 UTC 2012 

Please file a bug report with a test case and make sure you use line
endings.


On Wed, Dec 5, 2012 at 7:59 PM, tadaP <prasadhappy at yahoo.com> wrote:

> I am consistently having a System.NullReferenceException on making a WCF
> call. The application is a multi-threaded app and each thread makes a WCF
> call at a certain interval. I see the app throwing exception everytime I
> start the app and at the same thread. I am using Mono 3.0.5. The stack
> trace looks as below [ERROR] FATAL UNHANDLED EXCEPTION:
> System.NullReferenceException: Object reference not set to an instance of
> an object at System.Array.Copy (System.Array sourceArray, Int32
> sourceIndex, System.Array destinationArray, Int32 destinationIndex, Int32
> length) [0x00104] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/corlib/System/Array.cs:975
> at System.Collections.ArrayList.CopyTo (Int32 index, System.Array array,
> Int32 arrayIndex, Int32 count) [0x0002d] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/corlib/System.Collections/ArrayList.cs:3064
> at System.Collections.ArrayList.CopyTo (System.Array array, Int32
> arrayIndex) [0x00000] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/corlib/System.Collections/ArrayList.cs:3046
> at System.MonoCustomAttrs.GetCustomAttributes (ICustomAttributeProvider
> obj, System.Type attributeType, Boolean inherit) [0x0028f] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/corlib/System/MonoCustomAttrs.cs:252
> at System.MonoType.GetCustomAttributes (System.Type attributeType, Boolean
> inherit) [0x00017] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/corlib/System/MonoType.cs:582
> at
> System.Runtime.Serialization.KnownTypeCollection.GetAttribute[CollectionDataContractAttribute]
> (ICustomAttributeProvider ap) [0x00000] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:779
> at
> System.Runtime.Serialization.KnownTypeCollection.RegisterCollectionContract
> (System.Type type) [0x00000] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:785
> at System.Runtime.Serialization.KnownTypeCollection.DoTryRegister
> (System.Type type) [0x00038] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:742
> at System.Runtime.Serialization.KnownTypeCollection.TryRegister
> (System.Type type) [0x0000c] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:723
> at System.Runtime.Serialization.KnownTypeCollection.InsertItem (Int32
> index, System.Type type) [0x00019] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/KnownTypeCollection.cs:466
> at System.Collections.ObjectModel.Collection`1[System.Type].Add
> (System.Type item) [0x0000c] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/corlib/System.Collections.ObjectModel/Collection.cs:74
> at System.Runtime.Serialization.DataContractSerializer.RegisterTypeAsKnown
> (System.Type type) [0x00026] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/DataContractSerializer.cs:238
> at System.Runtime.Serialization.DataContractSerializer.PopulateTypes
> (IEnumerable`1 knownTypes) [0x00058] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/DataContractSerializer.cs:226
> at System.Runtime.Serialization.DataContractSerializer..ctor (System.Type
> type, System.String rootName, System.String rootNamespace, IEnumerable`1
> knownTypes) [0x00051] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/DataContractSerializer.cs:107
> at
> System.ServiceModel.Dispatcher.DataContractMessagesFormatter.GetSerializer
> (System.ServiceModel.Description.MessagePartDescription partDesc) [0x00055]
> in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/BaseMessagesFormatter.cs:448
> at
> System.ServiceModel.Dispatcher.DataContractMessagesFormatter+DataContractBodyWriter.WriteMessagePart
> (System.Xml.XmlDictionaryWriter writer,
> System.ServiceModel.Description.MessageBodyDescription desc,
> System.ServiceModel.Description.MessagePartDescription partDesc,
> System.Object obj) [0x00049] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/BaseMessagesFormatter.cs:501
> at
> System.ServiceModel.Dispatcher.DataContractMessagesFormatter+DataContractBodyWriter.OnWriteBodyContents
> (System.Xml.XmlDictionaryWriter writer) [0x00091] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Dispatcher/BaseMessagesFormatter.cs:486
> at System.ServiceModel.Channels.BodyWriter.WriteBodyContents
> (System.Xml.XmlDictionaryWriter writer) [0x00000] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Channels/BodyWriter.cs:57
> at System.ServiceModel.Channels.SimpleMessage.OnWriteBodyContents
> (System.Xml.XmlDictionaryWriter writer) [0x00000] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Channels/MessageImpl.cs:331
> at System.ServiceModel.Channels.Message.WriteBodyContents
> (System.Xml.XmlDictionaryWriter writer) [0x00022] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Channels/Message.cs:164
> at System.ServiceModel.Channels.Message.WriteBody
> (System.Xml.XmlDictionaryWriter writer) [0x0001c] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Channels/Message.cs:149
> at System.ServiceModel.Channels.Message.OnWriteMessage
> (System.Xml.XmlDictionaryWriter writer) [0x00065] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Channels/Message.cs:274
> at System.ServiceModel.Channels.Message.WriteMessage
> (System.Xml.XmlDictionaryWriter writer) [0x00026] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Channels/Message.cs:176
> at System.ServiceModel.Channels.TextMessageEncoder.WriteMessage
> (System.ServiceModel.Channels.Message message, System.IO.Stream stream)
> [0x00043] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Channels/TextMessageEncoder.cs:117
> at System.ServiceModel.Channels.HttpRequestChannel.BeginProcessRequest
> (System.ServiceModel.Channels.HttpChannelRequestAsyncResult result)
> [0x003a8] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Channels/HttpRequestChannel.cs:173
> at System.ServiceModel.Channels.HttpRequestChannel.BeginRequest
> (System.ServiceModel.Channels.Message message, TimeSpan timeout,
> System.AsyncCallback callback, System.Object state) [0x00012] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Channels/HttpRequestChannel.cs:315
> at System.ServiceModel.Channels.HttpRequestChannel.Request
> (System.ServiceModel.Channels.Message message, TimeSpan timeout) [0x00000]
> in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel.Channels/HttpRequestChannel.cs:72
> at System.ServiceModel.MonoInternal.ClientRuntimeChannel.Request
> (System.ServiceModel.Channels.Message msg, TimeSpan timeout) [0x0000b] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:582
> at System.ServiceModel.MonoInternal.ClientRuntimeChannel.Request
> (System.ServiceModel.Description.OperationDescription od, System.Object[]
> parameters) [0x00066] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:537
> at System.ServiceModel.MonoInternal.ClientRuntimeChannel.DoProcess
> (System.Reflection.MethodBase method, System.String operationName,
> System.Object[] parameters) [0x00038] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:502
> at System.ServiceModel.MonoInternal.ClientRuntimeChannel.Process
> (System.Reflection.MethodBase method, System.String operationName,
> System.Object[] parameters) [0x0001c] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.ServiceModel/System.ServiceModel/ClientRuntimeChannel.cs:479
> Is there is any fix for the issue?
> ------------------------------
> View this message in context: WCF throwing System.NullReferenceException
> on multithreaded application<http://mono.1490590.n4.nabble.com/WCF-throwing-System-NullReferenceException-on-multithreaded-application-tp4657659.html>
> Sent from the Mono - Dev mailing list archive<http://mono.1490590.n4.nabble.com/Mono-Dev-f1517221.html>at Nabble.com.
>
> _______________________________________________
> Mono-devel-list mailing list
> Mono-devel-list at lists.ximian.com
> http://lists.ximian.com/mailman/listinfo/mono-devel-list
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ximian.com/pipermail/mono-devel-list/attachments/20121207/27c3b957/attachment-0001.html>

More information about the Mono-devel-list mailing list