| 2020-10-06 16:36:40 |
Patrick Goetz |
description |
This bug applies to both Ubuntu 18.04 and Ubuntu 20.04, the two distros I've checked.
This is likely a packaging error. The cups-pk-helper user appears in /etc/passwd as:
cups-pk-helper:x:111:118:user for cups-pk-helper service,,,:/home/cups-pk-helper:/usr/sbin/nologin
Of course there is no directory /home/cups-pk-helper. This appears innocuous, but can cause problems for users that have, say autofs mounted home directories. To cite one example, the python virtual environment anaconda trolls through /etc/passw looking for environments in /home/USER. This triggers autofs to try and mount /home/cups-pk--helper, which doesn't existing, causing the automounter to hang under certain circumstances. In, for example, Arch linux, this entry would appear as the considerably more sensible
cups-pk-helper:x:111:118:user for cups-pk-helper service,,,:/:/usr/sbin/nologin
While an edge case in the current compute environment, this is also a very easy fix. Don't reference non-existent directories. Many Ubuntu packages make this packaging error when creating local users with non-existent home directories; e.g. syslog. |
This bug applies to both Ubuntu 18.04 and Ubuntu 20.04, the two distros I've checked.
This is likely a packaging error. The cups-pk-helper user appears in /etc/passwd as:
cups-pk-helper:x:111:118:user for cups-pk-helper service,,,:/home/cups-pk-helper:/usr/sbin/nologin
Of course there is no directory /home/cups-pk-helper. This appears innocuous, but can cause problems for users that have, say autofs mounted home directories. To cite one example, the python virtual environment anaconda trolls through /etc/passwd looking for environments in /home/USER. This triggers autofs to try and mount /home/cups-pk--helper, which doesn't exist, causing the automounter to hang under certain circumstances. In, for example, Arch linux, this entry would appear as the considerably more sensible
cups-pk-helper:x:111:118:user for cups-pk-helper service,,,:/:/usr/sbin/nologin
While an edge case in the current compute environment, this is also a very easy fix. Don't reference non-existent directories. Many Ubuntu packages make this packaging error when creating local users with non-existent home directories; e.g. syslog. |
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