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PODeadlock in System.Component.TypeDescriptor
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  1. PODeadlock in System.Component.TypeDescriptor
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    copied!<p>I have spent a lot of time (googling, reflecting .net binaries, etc) trying to resolve the following problem:</p> <p>I see a deadlock in our application (ASP.NET MVC + EF4). We have several EF's contexts which are created at the beginning of the request and are disposed of at the end. Sometimes we have the following situation: ASP.NET creates a thread per request and then thread enters an "in join or sleep" state when accessing EF context.</p> <p>Majority of the deadlocked threads have a stack trace as follows:</p> <pre><code> System.dll!System.ComponentModel.TypeDescriptor.Refresh(object component, bool refreshReflectionProvider) + 0x97 bytes System.Data.dll!System.Data.SqlClient.SqlCommand.DesignTimeVisible.set(bool value) + 0x22 bytes System.Data.dll!System.Data.SqlClient.SqlCommand.SqlCommand(System.Data.SqlClient.SqlCommand from) + 0xc9 bytes System.Data.dll!System.Data.SqlClient.SqlCommand.Clone() + 0x27 bytes System.Data.dll!System.Data.SqlClient.SqlCommand.System.ICloneable.Clone() + 0x9 bytes System.Data.Entity.dll!System.Data.Common.DbCommandDefinition.CreateCommandDefinition(System.Data.Common.DbCommand prototype) + 0x47 bytes System.Data.Entity.dll!System.Data.SqlClient.SqlProviderServices.CreateDbCommandDefinition(System.Data.Common.DbProviderManifest providerManifest, System.Data.Common.CommandTrees.DbCommandTree commandTree) + 0x21 bytes System.Data.Entity.dll!System.Data.EntityClient.EntityCommandDefinition.EntityCommandDefinition(System.Data.Common.DbProviderFactory storeProviderFactory, System.Data.Common.CommandTrees.DbCommandTree commandTree) + 0x2a1 bytes System.Data.Entity.dll!System.Data.EntityClient.EntityProviderServices.CreateDbCommandDefinition(System.Data.Common.DbProviderManifest providerManifest, System.Data.Common.CommandTrees.DbCommandTree commandTree) + 0x8e bytes System.Data.Entity.dll!System.Data.Objects.Internal.ObjectQueryExecutionPlan.Prepare(System.Data.Objects.ObjectContext context, System.Data.Common.CommandTrees.DbQueryCommandTree tree, System.Type elementType, System.Data.Objects.MergeOption mergeOption, System.Data.Objects.Span span, System.Collections.ObjectModel.ReadOnlyCollection&lt;System.Collections.Generic.KeyValuePair&lt;System.Data.Objects.ObjectParameter,System.Data.Objects.ELinq.QueryParameterExpression&gt;&gt; compiledQueryParameters) + 0x113 bytes System.Data.Entity.dll!System.Data.Objects.ELinq.ELinqQueryState.GetExecutionPlan(System.Data.Objects.MergeOption? forMergeOption) + 0x310 bytes System.Data.Entity.dll!System.Data.Objects.ObjectQuery&lt;CompuTool.Business.Portal.Desktop&gt;.GetResults(System.Data.Objects.MergeOption? forMergeOption) + 0x55 bytes System.Data.Entity.dll!System.Data.Objects.ObjectQuery&lt;System.__Canon&gt;.System.Collections.Generic.IEnumerable&lt;T&gt;.GetEnumerator() + 0x2f bytes System.Core.dll!System.Linq.Enumerable.SingleOrDefault&lt;CompuTool.Business.Portal.Desktop&gt;(System.Collections.Generic.IEnumerable&lt;CompuTool.Business.Portal.Desktop&gt; source) + 0x10f bytes System.Core.dll!System.Linq.Queryable.SingleOrDefault&lt;CompuTool.Business.Portal.Desktop&gt;(System.Linq.IQueryable&lt;CompuTool.Business.Portal.Desktop&gt; source, System.Linq.Expressions.Expression&lt;System.Func&lt;CompuTool.Business.Portal.Desktop,bool&gt;&gt; predicate) + 0x24e bytes &gt; CompuTool.Presentation.Web.dll!CompuTool.Presentation.Web.Controllers.DesktopStateController.ValidateRequest(CompuTool.Business.Portal.DesktopManagerContext dataContext, CompuTool.Business.Portal.User user, int desktopId) Line 30 + 0x19e bytes C# CompuTool.Presentation.Web.dll!CompuTool.Presentation.Web.Controllers.DesktopStateController.SetDesktopState(CompuTool.Business.Portal.User user, int desktopId, string value) Line 65 + 0x17 bytes C# CompuTool.Presentation.Web.dll!CompuTool.Presentation.Web.Controllers.DesktopStateController.Set(int desktopId, string value) Line 111 + 0x13 bytes C# [Lightweight Function] System.Web.Mvc.dll!System.Web.Mvc.ReflectedActionDescriptor.Execute(System.Web.Mvc.ControllerContext controllerContext, System.Collections.Generic.IDictionary&lt;string,object&gt; parameters) + 0x108 bytes System.Web.Mvc.dll!System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(System.Web.Mvc.ControllerContext controllerContext, System.Web.Mvc.ActionDescriptor actionDescriptor, System.Collections.Generic.IDictionary&lt;string,object&gt; parameters) + 0x27 bytes System.Web.Mvc.dll!System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters.AnonymousMethod__12() + 0x81 bytes System.Web.Mvc.dll!System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(System.Web.Mvc.IActionFilter filter, System.Web.Mvc.ActionExecutingContext preContext, System.Func&lt;System.Web.Mvc.ActionExecutedContext&gt; continuation) + 0xe6 bytes System.Web.Mvc.dll!System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(System.Web.Mvc.ControllerContext controllerContext, System.Collections.Generic.IList&lt;System.Web.Mvc.IActionFilter&gt; filters, System.Web.Mvc.ActionDescriptor actionDescriptor, System.Collections.Generic.IDictionary&lt;string,object&gt; parameters) + 0x13a bytes System.Web.Mvc.dll!System.Web.Mvc.ControllerActionInvoker.InvokeAction(System.Web.Mvc.ControllerContext controllerContext, string actionName) + 0x15f bytes System.Web.Mvc.dll!System.Web.Mvc.Controller.ExecuteCore() + 0x9f bytes System.Web.Mvc.dll!System.Web.Mvc.ControllerBase.Execute(System.Web.Routing.RequestContext requestContext) + 0x14f bytes System.Web.Mvc.dll!System.Web.Mvc.MvcHandler.BeginProcessRequest.AnonymousMethod__5() + 0x3e bytes System.Web.Mvc.dll!System.Web.Mvc.Async.AsyncResultWrapper.MakeVoidDelegate.AnonymousMethod__0() + 0x14 bytes System.Web.Mvc.dll!System.Web.Mvc.MvcHandler.EndProcessRequest.AnonymousMethod__d() + 0x36 bytes System.Web.dll!System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() + 0x1d5 bytes System.Web.dll!System.Web.HttpApplication.ExecuteStep(System.Web.HttpApplication.IExecutionStep step, ref bool completedSynchronously) + 0x177 bytes System.Web.dll!System.Web.HttpApplication.PipelineStepManager.ResumeSteps(System.Exception error) + 0x6f5 bytes System.Web.dll!System.Web.HttpApplication.BeginProcessRequestNotification(System.Web.HttpContext context, System.AsyncCallback cb) + 0x85 bytes System.Web.dll!System.Web.HttpRuntime.ProcessRequestNotificationPrivate(System.Web.Hosting.IIS7WorkerRequest wr, System.Web.HttpContext context) + 0x2b6 bytes System.Web.dll!System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(System.IntPtr managedHttpContext, System.IntPtr nativeRequestContext, System.IntPtr moduleData, int flags) + 0x3bf bytes System.Web.dll!System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(System.IntPtr managedHttpContext, System.IntPtr nativeRequestContext, System.IntPtr moduleData, int flags) + 0x22 bytes [Native to Managed Transition] [Managed to Native Transition] System.Web.dll!System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(System.IntPtr managedHttpContext, System.IntPtr nativeRequestContext, System.IntPtr moduleData, int flags) + 0x4f4 bytes System.Web.dll!System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(System.IntPtr managedHttpContext, System.IntPtr nativeRequestContext, System.IntPtr moduleData, int flags) + 0x22 bytes </code></pre> <p>Is this issue related to incorrect Entity Framework contexts usage? Thanks for help.</p>
 

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