install/60551: Installer Segfaults While Setting Up CGD

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>Number:         60551
>Category:       install
>Synopsis:       Installer Segfaults While Setting Up CGD
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 06 23:15:00 +0000 2026
>Originator:     Danny Wilkins
>Release:        10.1, 11, possibly others
>Organization:
>Environment:
NetBSD 11.0 NetBSD 11.0 (GENERIC) #0: Thu Jul 30 15:23:12 UTC 2026 mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/cys/arch/amd64/compile/GENERIC amd64 
>Description:
While setting up a CGD partition, the installer segmentation faults after selecting the partition and choosing the "Encrypt" menu option. This occurs on both GPT and MBR partitioned disks.
>How-To-Repeat:
Quickest way:
Start sysinst
Enter the Utility Menu
Partition A Disk
Choose the hard drive.
Partition as GPT, create a partition. The type doesn't matter.
Accept the partitioning
Select the newly created partition in the extended partitioning menu
Select "encrypt"
The installer segfaults.
>Fix:
No fix, but a workaround:
Running cgdconfig commands manually works fine.