Those errors mean nothing to HLDS and can be freely ignored. They do not cause HLDS to have any issues. They are only reported because the Linux version is checking for the Linux Client as if it were a Listen Server. They do not cause any issues
I do not browse the forums regularly anymore. If you need me for anything (asking questions or anything else), then PM me (be descriptive in your PM, message containing only a link to a thread will be ignored).