Double free in BufferSegment

[davidfowl]

Unhandled Exception: System.InvalidOperationException: outstanding references detected.
   at Microsoft.AspNetCore.Server.Kestrel.Internal.System.Buffers.OwnedBuffer`1.Dispose()
   at Microsoft.AspNetCore.Server.Kestrel.Internal.System.IO.Pipelines.Pipe.Dispose()
   at Microsoft.AspNetCore.Server.Kestrel.Internal.System.IO.Pipelines.Pipe.Microsoft.AspNetCore.Server.Kestrel.Internal.System.IO.Pipelines.IPipeWriter.Complete(Exception exception)
   at Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.LibuvConnection.<OnRead>d__34.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadPoolWorkQueue.Dispatch()

[dougbu]

Have now seen this in two aspnet/Performance tests using large (D15v2) Azure machines with accelerated networking. Most recent time, was running dotnet .\bin\Release\netcoreapp2.0\LargeStaticView.dll in the testapp\LargeStaticView folder on Windows server. Client (Ubuntu 16.04 LTS) command was wrk -H "Host: localhost" -H "Accept: text/plain,text/html;q=0.9,application/json;q=0.9,application/xhtml+xml;q=0.9,application/xml;q=0.8,*/*;q=0.7" -H "Connection: keep-alive" --latency -d 30 -c 512 --timeout 20 -t 32 http://10.1.9.5:5000/TagHelpers.

A few server details:

> dotnet --info
.NET Command Line Tools (2.0.0-preview1-005783)

Product Information:
 Version:            2.0.0-preview1-005783
 Commit SHA-1 hash:  8bd15c7ec0

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.14393
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Users\dougbu\AppData\Local\Microsoft\dotnet\sdk\2.0.0-preview1-005783\

Microsoft .NET Core Shared Framework Host

  Version  : 2.0.0-preview1-001967-00
  Build    : fa25acec41a87ce36b3ea61273d4798eb0a2486f

[muratg]

@pakrym I was told that you already fixed this. :)

[pakrym]

Fixed by dotnet/corefxlab@4b96e38