Debugger not working ARM64 M1 Mac Azure Functions 4 .NET 6 Unknown Error: 0x80131c3c

[EthanSK]

Steps to reproduce

Start VSCode debugger with Azure Functions v4 core tools on .net6 with the following launch.json config:

"configurations": [
    {
      "name": "Attach to .NET Functions",
      "type": "coreclr",
      "request": "attach",
      "processId": "${command:azureFunctions.pickProcess}",
     }
  ]

Expected behavior

Debugger should work

Actual behavior

Failed to attach to process: Unknown Error: 0x80131c3c

Work around:

Modify launch.json and add "targetArchitecture": "x86_64"

    "configurations": [
    {
      "name": "Attach to .NET Functions",
      "type": "coreclr",
      "request": "attach",
      "processId": "${command:azureFunctions.pickProcess}",
      "targetArchitecture": "x86_64"
     }
  ]

dotnet --info output

.NET SDK (reflecting any global.json):
Version: 6.0.100
Commit: 9e8b04bbff

Runtime Environment:
OS Name: Mac OS X
OS Version: 12.0
OS Platform: Darwin
RID: osx-arm64
Base Path: /usr/local/share/dotnet/sdk/6.0.100/

Host (useful for support):
Version: 6.0.0
Commit: 4822e3c3aa

.NET SDKs installed:
6.0.100 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

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

Azure functions info

Azure Functions Core Tools
Core Tools Version: 4.0.3971 Commit hash: d0775d487c93ebd49e9c1166d5c3c01f3c76eaaf (64-bit)
Function Runtime Version: 4.0.1.16815

Environment information

VSCode version: 1.62.2
C# Extension: 1.23.16

Mono Information

OmniSharp using built-in mono

Dotnet Information

.NET SDK (reflecting any global.json): Version: 6.0.100 Commit: 9e8b04bbff

Runtime Environment:
OS Name: Mac OS X
OS Version: 12.0
OS Platform: Darwin
RID: osx-arm64
Base Path: /usr/local/share/dotnet/sdk/6.0.100/

Host (useful for support):
Version: 6.0.0
Commit: 4822e3c3aa

.NET SDKs installed:
6.0.100 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

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

Visual Studio Code Extensions

Extension	Author	Version
angular-console	nrwl	17.12.3
Angular2	johnpapa	12.0.0
azure-account	ms-vscode	0.9.11
cmake	twxs	0.0.17
codespaces	GitHub	1.3.6
cpptools	ms-vscode	1.7.1
csharp	ms-dotnettools	1.23.16
debugger-for-chrome	msjsdiag	4.13.0
dotnet	formulahendry	0.0.4
EditorConfig	EditorConfig	0.16.4
gitlens	eamodio	11.6.1
java	redhat	1.0.0
jupyter	ms-toolsai	2021.10.1101450599
jupyter-keymap	ms-toolsai	1.0.0
jupyter-renderers	ms-toolsai	1.0.3
markdown-preview-enhanced	shd101wyy	0.6.1
matlab	Gimly81	2.2.1
ng-template	Angular	13.0.0
playfab-explorer	Playfab	0.1.15
prettier-vscode	esbenp	9.0.0
python	ms-python	2021.11.1422169775
rainbow-csv	mechatroner	1.10.1
remote-ssh	ms-vscode-remote	0.66.1
remote-ssh-edit	ms-vscode-remote	0.66.1
restore-terminals	EthanSK	1.1.6
swdc-vscode	softwaredotcom	2.6.14
tcl	bitwisecook	0.4.0
terraform	4ops	0.2.2
todo-tree	Gruntfuggly	0.0.214
unity-code-snippets	kleber-swf	1.3.0
unity-debug	Unity	3.0.2
unity-tools	Tobiah	1.2.12
vscode-apollo	apollographql	1.19.9
vscode-azurefunctions	ms-azuretools	1.6.0
vscode-azureresourcegroups	ms-azuretools	0.4.0
vscode-eslint	dbaeumer	2.2.2
vscode-graphql	GraphQL	0.3.18
vscode-icons	vscode-icons-team	11.7.0
vscode-java-debug	vscjava	0.36.0
vscode-java-dependency	vscjava	0.18.8
vscode-java-pack	vscjava	0.18.6
vscode-java-test	vscjava	0.32.0
vscode-jest-runner	firsttris	0.4.47
vscode-maven	vscjava	0.34.1
vscode-nuget-package-manager	jmrog	1.1.6
vscode-pylance	ms-python	2021.11.1
vscode-typescript-tslint-plugin	ms-vscode	1.3.3
vscodeintellicode	VisualStudioExptTeam	1.2.14
vsfire	toba	1.4.1

VS Code version: 1.62.2 commit 3a6960b964327f0e3882ce18fcebd07ed191b316
C# Extension version: v1.23.16

OmniSharp log

-> (C) {"command":"initialize","arguments":{"clientID":"vscode","clientName":"Visual Studio Code","adapterID":"coreclr","pathFormat":"path","linesStartAt1":true,"columnsStartAt1":true,"supportsVariableType":true,"supportsVariablePaging":true,"supportsRunInTerminalRequest":true,"locale":"en-gb","supportsProgressReporting":true,"supportsInvalidatedEvent":true,"supportsMemoryReferences":true},"type":"request","seq":1}
<- (R) {"seq":1,"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"supportsConfigurationDoneRequest":true,"supportsFunctionBreakpoints":true,"supportsConditionalBreakpoints":true,"supportsHitConditionalBreakpoints":true,"supportsEvaluateForHovers":true,"exceptionBreakpointFilters":[{"filter":"all","label":"All Exceptions","description":"Break when an exception is thrown. For more information about exception settings, see: https://aka.ms/VSCode-CS-ExceptionSettings","default":false,"supportsCondition":true,"conditionDescription":"Comma-separated list of exception types to break on, or if the list starts with '!', a list of exception types to ignore. \nExample 1: System.NullReferenceException -- this will break on just null reference exceptions. \nExample 2: !System.Threading.Tasks.TaskCanceledException -- this will break on all exceptions except for task canceled.\n\nFor more information about exception settings, see: https://aka.ms/VSCode-CS-ExceptionSettings"},{"filter":"user-unhandled","label":"User-Unhandled Exceptions","description":"Break when an exception is caught in non-user code (system code) after having passed through user code. For more information about exception settings, see: https://aka.ms/VSCode-CS-ExceptionSettings","default":true,"supportsCondition":true,"conditionDescription":"Comma-separated list of exception types to break on, or if the list starts with '!', a list of exception types to ignore. \nExample 1: System.NullReferenceException -- this will break on just null reference exceptions. \nExample 2: !System.Threading.Tasks.TaskCanceledException -- this will break on all exceptions except for task canceled.\n\nFor more information about exception settings, see: https://aka.ms/VSCode-CS-ExceptionSettings"}],"supportsSetVariable":true,"supportsGotoTargetsRequest":true,"supportsModulesRequest":true,"supportedChecksumAlgorithms":["MD5","SHA1","SHA256"],"supportsExceptionOptions":true,"supportsValueFormattingOptions":true,"supportsExceptionInfoRequest":true,"supportTerminateDebuggee":true,"supportsSetExpression":true,"supportsReadMemoryRequest":true,"supportsCancelRequest":true,"supportsExceptionFilterOptions":true,"supportsExceptionConditions":true,"supportsLoadSymbolsRequest":true,"supportsModuleSymbolSearchLog":true,"supportsDebuggerProperties":true,"supportsSetSymbolOptions":true,"supportsHitBreakpointIds":true,"supportsVsIndividualBreakpointOperations":true,"supportsVsBreakpointLanguage":true,"supportsSetHitCount":true,"supportsVsCustomMessages":true,"supportsEvaluationOptions":true,"supportsExceptionStackTrace":true,"memoryReferencesAreAddresses":true,"supportsObjectFavorites":true,"supportsObjectId":true,"supportsVariableEnumerators":false}}
-> (C) {"command":"initialize","arguments":{"clientID":"vscode","clientName":"Visual Studio Code","adapterID":"coreclr","pathFormat":"path","linesStartAt1":true,"columnsStartAt1":true,"supportsVariableType":true,"supportsVariablePaging":true,"supportsRunInTerminalRequest":true,"locale":"en-gb","supportsProgressReporting":true,"supportsInvalidatedEvent":true,"supportsMemoryReferences":true},"type":"request","seq":1}
-> (C) {"command":"attach","arguments":{"name":"Attach to .NET Functions","type":"coreclr","request":"attach","processId":"32880","debugServer":4711,"__configurationTarget":5,"__sessionId":"99b268cc-d048-4ec5-b382-3b54f38cfe9f"},"type":"request","seq":2}
<- (E) {"seq":4,"type":"event","event":"output","body":{"category":"console","output":"-------------------------------------------------------------------\nYou may only use the Microsoft .NET Core Debugger (vsdbg) with\nVisual Studio Code, Visual Studio or Visual Studio for Mac software\nto help you develop and test your applications.\n-------------------------------------------------------------------\n","severity":"ok"}}
<- (R) {"seq":5,"type":"response","request_seq":2,"success":true,"command":"attach"}
<- (E) {"seq":6,"type":"event","event":"initialized","body":{}}
-> (C) {"command":"setFunctionBreakpoints","arguments":{"breakpoints":[]},"type":"request","seq":3}
<- (R) {"seq":7,"type":"response","request_seq":3,"success":true,"command":"setFunctionBreakpoints","body":{"breakpoints":[]}}
-> (C) {"command":"setExceptionBreakpoints","arguments":{"filters":[],"filterOptions":[{"filterId":"user-unhandled"}]},"type":"request","seq":4}
<- (R) {"seq":8,"type":"response","request_seq":4,"success":true,"command":"setExceptionBreakpoints","body":{"breakpoints":[{"verified":true}]}}
-> (C) {"command":"configurationDone","type":"request","seq":5}
<- (E) {"seq":9,"type":"event","event":"output","body":{"category":"telemetry","output":"VS/Diagnostics/Debugger/vsdbg/AttachFailed","data":{"VS.Diagnostics.Debugger.vsdbg.Distribution.Version":"21.1.0","VS.Diagnostics.Debugger.vsdbg.Distribution.Name":"Darwin","VS.Diagnostics.Debugger.vsdbg.Version":"17.0.10712.2 commit:70a83505117741ba30f92c713a4bb0d0395c3197","VS.Diagnostics.Debugger.vsdbg.OSFamily":"Darwin","VS.Diagnostics.Debugger.vsdbg.ErrorCode":-2146231236}}}
<- (E) {"seq":10,"type":"event","event":"output","body":{"category":"stderr","output":"Unable to start debugging. Failed to attach to process: Unknown Error: 0x80131c3c\n"}}
<- (R) {"seq":11,"type":"response","request_seq":5,"success":false,"command":"configurationDone","message":"Failed to attach to process: Unknown Error: 0x80131c3c"}
-> (C) {"command":"disconnect","arguments":{"restart":false},"type":"request","seq":6}
<- (E) {"seq":12,"type":"event","event":"output","body":{"category":"telemetry","output":"VS/Diagnostics/Debugger/vsdbg/DebugCompleted","data":{"VS.Diagnostics.Debugger.vsdbg.AdapterId":"coreclr","VS.Diagnostics.Debugger.vsdbg.Distribution.Version":"21.1.0","VS.Diagnostics.Debugger.vsdbg.Distribution.Name":"Darwin","VS.Diagnostics.Debugger.vsdbg.DebugCompleted.BreakCounter":0,"VS.Diagnostics.Debugger.vsdbg.Version":"17.0.10712.2 commit:70a83505117741ba30f92c713a4bb0d0395c3197","VS.Diagnostics.Debugger.vsdbg.OSFamily":"Darwin"}}}
<- (R) {"seq":13,"type":"response","request_seq":6,"success":true,"command":"disconnect"}

[gregg-miskelly]

I believe the problem here is that the way process picker commands work they can only specify one property: processId, but there is another property that also needs to be specified - targetArchitecture (see documentation).

This extension at least has a bug that we don't seem to specify targetArchitecture in the schema for attach configurations, and we don't list it in debugger-launchjson.md. @WardenGnaw I am assuming this wasn't done just because in most cases we will automatically figure it out?

Assuming that is it, this issue should probably move to the https://github.com/Microsoft/vscode-azurefunctions to provide a "${command:azureFunctions.targetArchitecture}" command.

[WardenGnaw]

I am assuming this wasn't done just because in most cases we will automatically figure it out?

Yep. The extension attempts to use the dotnet information to determine which architecture to use. However, if we fail to get this dotnet information, it uses the architecture of VS Code.

@EthanSK Which version of VS Code are you using?

I can update the OptionsSchema and md file to add targetArchitecture.

[EthanSK]

@WardenGnaw I have Apple Silicon only VS Code version: 1.62.2 commit 3a6960b964327f0e3882ce18fcebd07ed191b316
Thanks for looking into it!

[gregg-miskelly]

@EthanSK Did it work for you after changing your launch.json to:

"configurations": [
    {
      "name": "Attach to .NET Functions",
      "type": "coreclr",
      "request": "attach",
      "processId": "${command:azureFunctions.pickProcess}",
      "targetArchitecture": "x86_64"
     }
  ]

[EthanSK]

@gregg-miskelly Oh. nice. that worked :D interesting...

[gregg-miskelly]

Thanks. I edited the original comment to add the work around, and I opened microsoft/vscode-azurefunctions#3005 to track fixing the issue.