Unhandled exception causes docker container to hang on ARM64, like #66707
@janvorli is already working on this.
Since Jul 21, 2025.
Assessment
This issue has not been assessed yet.
Description
Description
It looks like the problem describred in #666707, is happening in .NET 9
More details
Application description
Containerized .net 9 console app, built from worker service template
If some configuration is missing, the app throws an exception in a constructor of a DI injected service.
Behavior in Windows Docker Desktop
When running
docker run myapp:1.0
the container stops as a consequence of the unhandled exception
Behavior in Linux docker - Unexpected behavior!!
When running
docker run myapp:1.0
the container shows the unhandled exception, but doesn't stop
However, adding the --init switch:
docker run --init myapp:1.0
the container shows the excception, and stops, as expected
Summary
So it looks exactly as described in https://github.com/dotnet/runtime/issues/66707#issuecomment-1382304345
Reproduction Steps
As described above:
- containerized app throwing an exception (more specifically an app based on worker service template throwing in the ctor of an injected service)
Running it in Linux ARM64 with
docker run myapp:1.0
doesn't stop the container
Adding --init, the exception does stop the container.
Expected behavior
Running the contaienr in Linux ARM64 with
docker run myapp:1.0
shoudl stop the contaienr on unhandled exception, but only does if --init is added.
Actual behavior
The container doesn't stop on unhandled exception.
Regression?
If it was really fixed in .NET 7, yep, it's a regression of something solved as explained in #66707
Known Workarounds
Run the container with --init
Configuration
No response
Other information
No response
- Dominant language
- C#
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