aspnetcore: System.NullReferenceException on Microsoft.AspNetCore.Http.Internal.DefaultHttpRequest.get_Query

Operating System: Ubuntu 16.04

dotnet --info

Host (useful for support):
  Version: 2.1.0
  Commit:  caa7b7e2ba

.NET Core SDKs installed:
  No SDKs were found.

.NET Core runtimes installed:
  Microsoft.NETCore.App 2.1.0 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

Dependencies:

<PackageReference Include="AutoMapper" Version="6.1.1" />
<PackageReference Include="JetBrains.Annotations" Version="11.1.0" />
<PackageReference Include="Microsoft.AspNetCore.Authentication" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Diagnostics" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Hosting" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Caching.Redis" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.CommandLine" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Logging.Console" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="2.0.0" />
<PackageReference Include="Microsoft.Net.Http.Server" Version="1.1.2" />
<PackageReference Include="Serilog.Extensions.Logging.File" Version="1.1.0" />
<PackageReference Include="FluentValidation.AspNetCore" Version="7.1.1" />
<PackageReference Include="Microsoft.Extensions.Logging.Filter" Version="1.1.2" />
<PackageReference Include="System.Text.Encoding.CodePages" Version="4.5.0" />

Exception:

System.NullReferenceException

Stack Trace:

   at Microsoft.AspNetCore.Http.Internal.DefaultHttpRequest.get_Query()
   at Microsoft.AspNetCore.Mvc.ModelBinding.QueryStringValueProviderFactory.CreateValueProviderAsync(ValueProviderFactoryContext context)
   at Microsoft.AspNetCore.Mvc.ModelBinding.CompositeValueProvider.CreateAsync(ActionContext actionContext, IList``1 factories)
   at Microsoft.AspNetCore.Mvc.ModelBinding.CompositeValueProvider.CreateAsync(ControllerContext controllerContext)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerBinderDelegateProvider.<>c__DisplayClass0_0.<<CreateBinderDelegate>g__Bind0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync()
   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Cors.Infrastructure.CorsMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Hosting.Internal.RequestServicesContainerMiddleware.Invoke(HttpContext httpContext)
   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.Frame`1.ProcessRequestsAsync()

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 29 (15 by maintainers)

Most upvoted comments

We see this issue too. For us, it occurs infrequently but when it does, it always occurs in the middleware processing when trying to set the user from the claims principal in the request:

“message”: “Object reference not set to an instance of an object.”, “stackTrace”: " at Microsoft.AspNetCore.Http.DefaultHttpContext.set_User(ClaimsPrincipal value)\n at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)\n at Common.Logging.Middleware.ManageLoggingContext.Invoke(HttpContext context)\n

srmorin on Jul 13, 2018

@davidfowl Disabling the App Insights instrumentation (and thus the use of httpcontext accessor from the ITelemetryInitializer) solved the null reference. Thank you!

allevyMS on Jul 23, 2018

@MatthewLymer were you able to make any progress on this? Do you have any new information?

What @Tratcher said is pretty much always the case: some code somewhere is incorrectly holding onto an HttpContext and using it from the wrong thread or concurrently, neither of which is supported.

Eilon on Jul 11, 2018