containerd / containerd/ttrpc

the server will hang after "error receiving message"

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Description

We've observed that the server could hang when the underlying socket returns unexpected data. The receiver thread exits immediately when an unexpected error occurs https://github.com/containerd/ttrpc/blob/ababa3fc1837d46a7ec4811665f17a0fb831e504/server.go#L392
yet the connection persists in an established state.

time="2025-12-29T15:32:51.611920734+08:00" level=error msg="error receiving message" error="read unix /run/containerd/s/ab50149a379faa1027579b7962c39bc60915ab720e02d22b78b6e13c8b20ec72->@: read: operation not permitted"

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