I run ASP.NET Core 1.1 on Ubuntu 16.04 in Docker container (with Ubuntu image).
This works fine, but 3 times in two weeks I catch error, that Kestrel stop responding.
No errors in Exception filter, in logs - only last record with start Action Executing, but not completed.
Why problem in Kestrel ? - Because it locked and not processing new requests.
At locked state, CPU usage is 4-5% (per core). I wait 4 hours, but not result.

TOP command result:

PID    USER      PR    NI    VIRT       RES          SHR S       %CPU      %MEM      TIME+       COMMAND
10788   root      20   0     11.396g    185060       53704 S     4.7       2.3       14:17.56     dotnet

Restarting docker container is solve issue.
I can't attach and trace it, because all tools, that I use - works only on Windows.