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C# language server repeatedly exits with SIGKILL on macOS

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  • 何か問題がありますか？
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評価

難易度
4/5
見積もり時間
3〜5日
初心者へのやさしさ
35/100
issue の種類
バグ
明瞭さ
説明が足りない
活発さ
活発
技術スタック
csharp, typescript, vscode
領域
devtools

調査の方向性

提供された C# ログから始め、記載されている VS Code、拡張機能、.NET のバージョンを使って macOS arm64 で再現します。SUPPORT.md に記載されている方法で C# LSP トレースロギングを有効にし、拡張機能の完全なログを収集します。繰り返される SIGKILL と再起動のサイクルを引き起こす要因が切り分けられ、検証済みの修正または実行可能な診断が文書化されれば完了です。

索引モデルが issue の本文から書いたものです。

説明

Bug C#DK Reliability Roslyn LSP

Type: Bug

Issue Description

Steps to Reproduce

Expected Behavior

Actual Behavior

Extension version: 2.140.9
VS Code version: Code 1.134.0 (Universal) (110a328ea54b42367b803ec53ee0bf52ef26b419, 2026-08-18T18:24:44Z)
OS version: Darwin arm64 25.6.0
Modes:

Logs
C# log
2026-08-26 23:40:18.043 [info] Locating .NET runtime version 10.0.5
2026-08-26 23:40:18.269 [info] Dotnet path: /Users/cuneytergen/Library/Application Support/Code/User/globalStorage/ms-dotnettools.vscode-dotnet-runtime/.dotnet/10.0.11~arm64~aspnetcore/dotnet
2026-08-26 23:40:18.269 [info] Activating C# + C# Dev Kit...
2026-08-26 23:40:19.027 [info] info: Program[0]
2026-08-26 23:40:19.027 [info]       Server started with process ID 82098
2026-08-26 23:40:20.059 [info] [Program] Language server initialized
2026-08-26 23:40:20.072 [info] [Program] Monitoring client process 81967 for exit
2026-08-26 23:40:20.564 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in '/Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-backend' in 4 milliseconds
2026-08-26 23:40:20.581 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in '/Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-ui' in 2 milliseconds
2026-08-26 23:40:23.732 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project /Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-backend/src/MasterData.Domain/MasterData.Domain.csproj loaded by C# Dev Kit
2026-08-26 23:40:23.750 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project /Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-backend/src/MasterData.Api/MasterData.Api.csproj loaded by C# Dev Kit
2026-08-26 23:40:23.754 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project /Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-backend/src/MasterData.Infrastructure/MasterData.Infrastructure.csproj loaded by C# Dev Kit
2026-08-26 23:40:23.757 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project /Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-backend/src/MasterData.Application/MasterData.Application.csproj loaded by C# Dev Kit
2026-08-26 23:42:04.646 [info] Connection to server got closed. Server will restart.
2026-08-26 23:42:04.649 [error] Server process exited with signal SIGKILL.
2026-08-26 23:42:04.772 [info] info: Program[0]
2026-08-26 23:42:04.772 [info]       Server started with process ID 82388
2026-08-26 23:42:05.083 [info] [Program] Language server initialized
2026-08-26 23:42:05.084 [info] [Program] Monitoring client process 81967 for exit
2026-08-26 23:42:05.299 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in '/Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-backend' in 3 milliseconds
2026-08-26 23:42:05.313 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in '/Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-ui' in 3 milliseconds
2026-08-26 23:43:13.772 [info] Connection to server got closed. Server will restart.
2026-08-26 23:43:13.774 [error] Server process exited with signal SIGKILL.
2026-08-26 23:43:13.878 [info] info: Program[0]
2026-08-26 23:43:13.878 [info]       Server started with process ID 82496
2026-08-26 23:43:14.171 [info] [Program] Language server initialized
2026-08-26 23:43:14.173 [info] [Program] Monitoring client process 81967 for exit
2026-08-26 23:43:14.380 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in '/Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-backend' in 3 milliseconds
2026-08-26 23:43:14.395 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in '/Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-ui' in 2 milliseconds
2026-08-26 23:43:50.880 [info] Connection to server got closed. Server will restart.
2026-08-26 23:43:50.882 [error] Server process exited with signal SIGKILL.
2026-08-26 23:43:50.983 [info] info: Program[0]
2026-08-26 23:43:50.983 [info]       Server started with process ID 82590
2026-08-26 23:43:51.294 [info] [Program] Language server initialized
2026-08-26 23:43:51.295 [info] [Program] Monitoring client process 81967 for exit
2026-08-26 23:43:51.514 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in '/Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-backend' in 3 milliseconds
2026-08-26 23:43:51.530 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in '/Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-ui' in 2 milliseconds
2026-08-26 23:44:28.354 [info] Connection to server got closed. Server will restart.
2026-08-26 23:44:28.356 [error] Server process exited with signal SIGKILL.
2026-08-26 23:44:28.457 [info] info: Program[0]
2026-08-26 23:44:28.457 [info]       Server started with process ID 82635
2026-08-26 23:44:28.779 [info] [Program] Language server initialized
2026-08-26 23:44:28.780 [info] [Program] Monitoring client process 81967 for exit
2026-08-26 23:44:28.991 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in '/Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-backend' in 3 milliseconds
2026-08-26 23:44:29.009 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in '/Users/cuneytergen/Documents/Musteri Projeleri/old_Hayat/hayat-it-masterdata-ui' in 2 milliseconds
C# LSP Trace Logs log

Environment Information

VSCode version: 1.134.0
C# Extension: 2.140.9
Using OmniSharp: false

Dotnet Information

Host:
Version: 10.0.11
Architecture: arm64
Commit: e2f47b0110
RID: osx-arm64

.NET SDKs installed:
No SDKs were found.

.NET runtimes installed:
Microsoft.AspNetCore.App 10.0.11 [/Users/cuneytergen/Library/Application Support/Code/User/globalStorage/ms-dotnettools.vscode-dotnet-runtime/.dotnet/10.0.11arm64aspnetcore/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 10.0.11 [/Users/cuneytergen/Library/Application Support/Code/User/globalStorage/ms-dotnettools.vscode-dotnet-runtime/.dotnet/10.0.11arm64aspnetcore/shared/Microsoft.NETCore.App]

Other architectures found:
None

Environment variables:
DOTNET_CLI_UI_LANGUAGE [en-US]
DOTNET_NOLOGO [true]
DOTNET_ROOT [/Users/cuneytergen/.dotnet]

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download

Visual Studio Code Extensions
Extension Author Version Folder Name
claude-code Anthropic 2.1.246 anthropic.claude-code-2.1.246-darwin-arm64
codespaces GitHub 1.18.16 github.codespaces-1.18.16
csdevkit ms-dotnettools 3.20.199 ms-dotnettools.csdevkit-3.20.199-darwin-arm64
csharp ms-dotnettools 2.140.9 ms-dotnettools.csharp-2.140.9-darwin-arm64
powershell ms-vscode 2025.4.0 ms-vscode.powershell-2025.4.0
volar Vue 3.3.11 vue.volar-3.3.11
vscode-containers ms-azuretools 2.5.0 ms-azuretools.vscode-containers-2.5.0
vscode-dotnet-runtime ms-dotnettools 3.1.0 ms-dotnettools.vscode-dotnet-runtime-3.1.0
C# Settings
Setting Value
preferCSharpExtension false
compilerDiagnosticScope openFiles
analyzerDiagnosticScope openFiles
enableXamlTools true
useServerGC true
System Info
Item Value
CPUs Apple M1 (8 x 2400)
GPU Status 2d_canvas: enabled
GPU0: VENDOR= 0x106b [Google Inc. (Apple)], DEVICE=0x0000 [ANGLE (Apple, ANGLE Metal Renderer: Apple M1, Version 26.6.2 (Build 25G82))], DRIVER_VENDOR=Apple, DRIVER_VERSION=26.6.2 ACTIVE
Machine model name: MacBookPro
Machine model version: 17.1
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: enabled_on
trees_in_viz: disabled_off
video_decode: enabled
video_encode: enabled
webgl: enabled
webgpu: enabled
webnn: disabled_off
Load (avg) 2, 3, 3
Memory (System) 16.00GB (0.63GB free)
Process Argv --crash-reporter-id 524dcf6b-10fe-4bf2-8cbf-bd569c3b2b8e
Screen Reader no
VM 0%
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