BUG -> PhysicalConnection System.NullReferenceException:
Under high load of my development environment the StackExchange.Redis PhysicalConnection class on internal void WriteHeader causes a uncaught exception without any clue. I am using the latest redis release on Ubuntu and the latest nuget version of stackexchange redis
Line 832 -> var span = _ioPipe!.Output.GetSpan(commandBytes.Length + 8 + Format.MaxInt32TextLen + Format.MaxInt32TextLen);
It seems like for no explainable reason the variable _ioPipe is null which causes the exception
Exception data ↓↓
| Name | Value | Type | |
|---|---|---|---|
| ◢ | $exception | {"Object reference not set to an instance of an object."} | System.NullReferenceException |
| ▶ Data | {System.Collections.ListDictionaryInternal} | System.Collections.IDictionary {System.Collections.ListDictionaryInternal} | |
| HResult | -2147467261 | int | |
| HasBeenThrown | true | bool | |
| HelpLink | null | string | |
| ▶ InnerException | null | System.Exception | |
| Message | "Object reference not set to an instance of an object." | string | |
| SerializationStackTraceString | " at StackExchange.Redis.PhysicalConnection.WriteHeader(RedisCommand command, Int32 arguments, CommandBytes commandBytes) in /_/src/StackExchange.Redis/PhysicalConnection.cs:line 809" | string | |
| SerializationWatsonBuckets | null | object | |
| Source | "StackExchange.Redis" | string | |
| StackTrace | " at StackExchange.Redis.PhysicalConnection.WriteHeader(RedisCommand command, Int32 arguments, CommandBytes commandBytes) in /_/src/StackExchange.Redis/PhysicalConnection.cs:line 832" | string | |
| ▶ TargetSite | {Void WriteHeader(StackExchange.Redis.RedisCommand, Int32, StackExchange.Redis.CommandBytes)} | System.Reflection.MethodBase {System.Reflection.RuntimeMethodInfo} | |
| _HResult | -2147467261 | int | |
| ▶ _data | {System.Collections.ListDictionaryInternal} | System.Collections.IDictionary {System.Collections.ListDictionaryInternal} | |
| _dynamicMethods | null | object[] | |
| _exceptionMethod | null | System.Reflection.MethodBase | |
| _helpURL | null | string | |
| ▶ _innerException | null | System.Exception | |
| _ipForWatsonBuckets | 0x00007ffa328be781 | System.UIntPtr | |
| _message | "Object reference not set to an instance of an object." | string | |
| _remoteStackTraceString | null | string | |
| _source | null | string | |
| ▶ _stackTrace | {sbyte[48]} | byte[] {sbyte[]} | |
| _stackTraceString | null | string | |
| _watsonBuckets | null | byte[] | |
| _xcode | -532462766 | int | |
| _xptrs | 0x0000000000000000 | System.IntPtr | |
| ▶ Static members |
Callstack data ↓↓
StackExchange.Redis.dll!StackExchange.Redis.PhysicalConnection.WriteHeader(StackExchange.Redis.RedisCommand command, int arguments, StackExchange.Redis.CommandBytes commandBytes) Line 832 C#
StackExchange.Redis.dll!StackExchange.Redis.Message.CommandValueValueMessage.WriteImpl(StackExchange.Redis.PhysicalConnection physical) Line 1503 C#
StackExchange.Redis.dll!StackExchange.Redis.Message.WriteTo(StackExchange.Redis.PhysicalConnection physical) Line 699 C#
StackExchange.Redis.dll!StackExchange.Redis.PhysicalBridge.WriteMessageToServerInsideWriteLock(StackExchange.Redis.PhysicalConnection connection, StackExchange.Redis.Message message) Line 1508 C#
StackExchange.Redis.dll!StackExchange.Redis.PhysicalBridge.WriteMessageInsideLock(StackExchange.Redis.PhysicalConnection physical, StackExchange.Redis.Message message) Line 713 C#
StackExchange.Redis.dll!StackExchange.Redis.PhysicalBridge.WriteMessageTakingWriteLockAsync_Awaited(System.Threading.Tasks.Task<bool> pending, StackExchange.Redis.PhysicalConnection physical, StackExchange.Redis.Message message) Line 1277 C#
[Resuming Async Method]
System.Private.CoreLib.dll!System.Runtime.CompilerServices.AsyncTaskMethodBuilder<StackExchange.Redis.WriteResult>.AsyncStateMachineBox<StackExchange.Redis.PhysicalBridge.<WriteMessageTakingWriteLockAsync_Awaited>d__106>.ExecutionContextCallback(object s) Line 287 C#
System.Private.CoreLib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) Line 183 C#
System.Private.CoreLib.dll!System.Runtime.CompilerServices.AsyncTaskMethodBuilder<StackExchange.Redis.WriteResult>.AsyncStateMachineBox<StackExchange.Redis.PhysicalBridge.<WriteMessageTakingWriteLockAsync_Awaited>d__106>.MoveNext(System.Threading.Thread threadPoolThread) Line 324 C#
System.Private.CoreLib.dll!System.Runtime.CompilerServices.AsyncTaskMethodBuilder<StackExchange.Redis.WriteResult>.AsyncStateMachineBox<StackExchange.Redis.PhysicalBridge.<WriteMessageTakingWriteLockAsync_Awaited>d__106>.MoveNext() Line 302 C#
System.Private.CoreLib.dll!System.Runtime.CompilerServices.TaskAwaiter.OutputWaitEtwEvents.AnonymousMethod__12_0(System.Action innerContinuation, System.Threading.Tasks.Task innerTask) Line 301 C#
System.Private.CoreLib.dll!System.Threading.Tasks.AwaitTaskContinuation.System.Threading.IThreadPoolWorkItem.Execute() Line 647 C#
System.Private.CoreLib.dll!System.Threading.ThreadPoolWorkQueue.Dispatch() Line 924 C#
System.Private.CoreLib.dll!System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() Line 77 C#
[Async Call Stack]
[Async] StackExchange.Redis.dll!StackExchange.Redis.ServerEndPoint.WriteDirectOrQueueFireAndForgetAsync.__Awaited|131_0<bool>(System.Threading.Tasks.ValueTask<StackExchange.Redis.WriteResult> l_result) Line 848 C#
[Async] StackExchange.Redis.dll!StackExchange.Redis.ServerEndPoint.HandshakeAsync(StackExchange.Redis.PhysicalConnection connection, StackExchange.Redis.LogProxy log) Line 930 C#