kern/58980: bootloader freezes when running "splash\nboot"

[rwhitlock22%gmail.com@localhost]

>Number:         58980
>Category:       kern
>Synopsis:       bootloader freezes when running "splash\nboot"
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jan 10 16:20:00 +0000 2025
>Originator:     Robert Whitlock
>Release:        
>Organization:
>Environment:
NetBSD/amd64 current, Nov 9 2024
>Description:
Drop into the command prompt for the bootloader and type

splash
boot

without a splash file. Then the system tries to boot but freezes while doing the / | \ - spinny thing.
>How-To-Repeat:
restart the computer
press 3 to enter the bootloader's interactive mode
type the following commands:

splash
boot
>Fix:
Add a check to the splash command to check that a file is actually passed, and print an error if not. Make sure that this does not result in uninitialized memory being used for the splash file.