Broker Hang on Bad Configuration

[PBearson]

Mosquitto Version: 2.0.11 (also tested in version 2.0.7 and 1.5)
Platform: Kali 2021.2 and Ubuntu 20.04

There seems to an issue with the broker hanging when the configuration file is given an improper password_file argument. Specifically, it seems like the broker hangs when password_file is given a directory name instead of a file name, for example:

password_file /

You can see from the following screenshot that the broker appears to load the config file, but it does not advance after that.

After some debugging, I found that the program appears to get stuck in this loop indefinitely.

[ralight]

Thanks very much, this is now fixed in the fixes branch and will be part of 2.0.12.