kern/157863: kbdmux prevents geli passwords from being entered properly on boot

[Robert Simmons]

>Number:         157863
>Category:       kern
>Synopsis:       kbdmux prevents geli passwords from being entered properly on boot
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jun 14 04:00:20 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Robert Simmons
>Release:        8.2-RELEASE
>Organization:
>Environment:
>Description:
If you initialize a geli encrypted provider using the "-b" flag to have it ask for the password during boot and you have kbdmux enabled as it is by default there is a conflict and the correct password is not accepted.
>How-To-Repeat:
Initialize a geli encrypted provider with the "-b" option.
Add it to fstab so it is mounted at boot.
Reboot.
Notice that the correct password is rejected.
>Fix:
The workaround is to add the following line to /boot/device.hints
hint.kbdmux.0.disabled="1"

You can confirm that you are entering the correct password by adding the following line to /boot/loader.conf
kern.geom.eli.visible_passphrase=1

>Release-Note:
>Audit-Trail:
>Unformatted: