From 185ad000bbf1e11b8573fed14581e18c71f9d104 Mon Sep 17 00:00:00 2001
From: Stephen Halter <halter73@gmail.com>
Date: Thu, 12 May 2016 15:43:29 -0700
Subject: [PATCH] Prevent NullReferenceException in KestrelThread.OnStopRude

- UvMemory.FromIntPtr looks up a weak reference so we need to null check.
---
 .../Infrastructure/KestrelThread.cs                            | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Microsoft.AspNetCore.Server.Kestrel/Infrastructure/KestrelThread.cs b/src/Microsoft.AspNetCore.Server.Kestrel/Infrastructure/KestrelThread.cs
index 20183d92da..b176cfa697 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel/Infrastructure/KestrelThread.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel/Infrastructure/KestrelThread.cs
@@ -132,7 +132,8 @@ namespace Microsoft.AspNetCore.Server.Kestrel
                 var handle = UvMemory.FromIntPtr<UvHandle>(ptr);
                 if (handle != _post)
                 {
-                    handle.Dispose();
+                    // handle can be null because UvMemory.FromIntPtr looks up a weak reference
+                    handle?.Dispose();
                 }
             });